Memory Resource Controller(Memcg) Implementation Memo.
-Last Updated: 2008/12/15
-Base Kernel Version: based on 2.6.28-rc8-mm.
+Last Updated: 2009/1/19
+Base Kernel Version: based on 2.6.29-rc2.
Because VM is getting complex (one of reasons is memcg...), memcg's behavior
is complex. This is a document for memcg's internal behavior.
# mount -t cgroup none /cgroup -t cpuset,memory,cpu,devices
and do task move, mkdir, rmdir etc...under this.
+
+ 9.7 swapoff.
+ Besides management of swap is one of complicated parts of memcg,
+ call path of swap-in at swapoff is not same as usual swap-in path..
+ It's worth to be tested explicitly.
+
+ For example, test like following is good.
+ (Shell-A)
+ # mount -t cgroup none /cgroup -t memory
+ # mkdir /cgroup/test
+ # echo 40M > /cgroup/test/memory.limit_in_bytes
+ # echo 0 > /cgroup/test/tasks
+ Run malloc(100M) program under this. You'll see 60M of swaps.
+ (Shell-B)
+ # move all tasks in /cgroup/test to /cgroup
+ # /sbin/swapoff -a
+ # rmdir /test/cgroup
+ # kill malloc task.
+
+ Of course, tmpfs v.s. swapoff test should be tested, too.
values are in the range -16 to +15, plus the special value -17, which disables
oom-killing altogether for this process.
+The process to be killed in an out-of-memory situation is selected among all others
+based on its badness score. This value equals the original memory size of the process
+and is then updated according to its CPU time (utime + stime) and the
+run time (uptime - start time). The longer it runs the smaller is the score.
+Badness score is divided by the square root of the CPU time and then by
+the double square root of the run time.
+
+Swapped out tasks are killed first. Half of each child's memory size is added to
+the parent's score if they do not share the same memory. Thus forking servers
+are the prime candidates to be killed. Having only one 'hungry' child will make
+parent less preferable than the child.
+
+/proc/<pid>/oom_score shows process' current badness score.
+
+The following heuristics are then applied:
+ * if the task was reniced, its score doubles
+ * superuser or direct hardware access tasks (CAP_SYS_ADMIN, CAP_SYS_RESOURCE
+ or CAP_SYS_RAWIO) have their score divided by 4
+ * if oom condition happened in one cpuset and checked task does not belong
+ to it, its score is divided by 8
+ * the resulting score is multiplied by two to the power of oom_adj, i.e.
+ points <<= oom_adj when it is positive and
+ points >>= -(oom_adj) otherwise
+
+The task with the highest badness score is then selected and its children
+are killed, process itself will be killed in an OOM situation when it does
+not have children or some of them disabled oom like described above.
+
2.13 /proc/<pid>/oom_score - Display current oom-killer score
-------------------------------------------------------------
# This creates the demonstration utility "lguest" which runs a Linux guest.
-CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include -I../../arch/x86/include
+CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include -I../../arch/x86/include -U_FORTIFY_SOURCE
LDLIBS:=-lz
all: lguest
select HAVE_AOUT
select HAVE_IDE
select HAVE_OPROFILE
+ select HAVE_SYSCALL_WRAPPERS
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
/* ??? Would be nice to use .gprel32 here, but we can't be sure that the
function loaded the GP, so this could fail in modules. */
-static inline void ATTRIB_NORET __BUG(const char *file, int line)
-{
- __asm__ __volatile__(
- "call_pal %0 # bugchk\n\t"
- ".long %1\n\t.8byte %2"
- : : "i" (PAL_bugchk), "i"(line), "i"(file));
- for ( ; ; )
- ;
-}
-
-#define BUG() __BUG(__FILE__, __LINE__)
+#define BUG() { \
+ __asm__ __volatile__( \
+ "call_pal %0 # bugchk\n\t" \
+ ".long %1\n\t.8byte %2" \
+ : : "i"(PAL_bugchk), "i"(__LINE__), "i"(__FILE__)); \
+ for ( ; ; ); }
#define HAVE_ARCH_BUG
#endif
#else /* no PCI - no IOMMU. */
+#include <asm/io.h> /* for virt_to_phys() */
+
struct scatterlist;
void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp);
osf_sigprocmask:
.prologue 0
mov $sp, $18
- jmp $31, do_osf_sigprocmask
+ jmp $31, sys_osf_sigprocmask
.end osf_sigprocmask
.align 4
* identical to OSF as we don't return 0 on success, but doing otherwise
* would require changes to libc. Hopefully this is good enough.
*/
-asmlinkage unsigned long
-osf_brk(unsigned long brk)
+SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
{
unsigned long retval = sys_brk(brk);
if (brk && brk != retval)
/*
* This is pure guess-work..
*/
-asmlinkage int
-osf_set_program_attributes(unsigned long text_start, unsigned long text_len,
- unsigned long bss_start, unsigned long bss_len)
+SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
+ unsigned long, text_len, unsigned long, bss_start,
+ unsigned long, bss_len)
{
struct mm_struct *mm;
return -EFAULT;
}
-asmlinkage int
-osf_getdirentries(unsigned int fd, struct osf_dirent __user *dirent,
- unsigned int count, long __user *basep)
+SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
+ struct osf_dirent __user *, dirent, unsigned int, count,
+ long __user *, basep)
{
int error;
struct file *file;
#undef NAME_OFFSET
-asmlinkage unsigned long
-osf_mmap(unsigned long addr, unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long fd, unsigned long off)
+SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
+ unsigned long, prot, unsigned long, flags, unsigned long, fd,
+ unsigned long, off)
{
struct file *file = NULL;
unsigned long ret = -EBADF;
return error;
}
-asmlinkage int
-osf_statfs(char __user *pathname, struct osf_statfs __user *buffer, unsigned long bufsiz)
+SYSCALL_DEFINE3(osf_statfs, char __user *, pathname,
+ struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
struct path path;
int retval;
return retval;
}
-asmlinkage int
-osf_fstatfs(unsigned long fd, struct osf_statfs __user *buffer, unsigned long bufsiz)
+SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
+ struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
struct file *file;
int retval;
return do_mount("", dirname, "proc", flags, NULL);
}
-asmlinkage int
-osf_mount(unsigned long typenr, char __user *path, int flag, void __user *data)
+SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, char __user *, path,
+ int, flag, void __user *, data)
{
int retval = -EINVAL;
char *name;
return retval;
}
-asmlinkage int
-osf_utsname(char __user *name)
+SYSCALL_DEFINE1(osf_utsname, char __user *, name)
{
int error;
return error;
}
-asmlinkage unsigned long
-sys_getpagesize(void)
+SYSCALL_DEFINE0(getpagesize)
{
return PAGE_SIZE;
}
-asmlinkage unsigned long
-sys_getdtablesize(void)
+SYSCALL_DEFINE0(getdtablesize)
{
return sysctl_nr_open;
}
/*
* For compatibility with OSF/1 only. Use utsname(2) instead.
*/
-asmlinkage int
-osf_getdomainname(char __user *name, int namelen)
+SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
{
unsigned len;
int i;
PL_DEL = 5, PL_FDEL = 6
};
-asmlinkage long
-osf_proplist_syscall(enum pl_code code, union pl_args __user *args)
+SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
+ union pl_args __user *, args)
{
long error;
int __user *min_buf_size_ptr;
return error;
}
-asmlinkage int
-osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss)
+SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
+ struct sigstack __user *, uoss)
{
unsigned long usp = rdusp();
unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
return error;
}
-asmlinkage long
-osf_sysinfo(int command, char __user *buf, long count)
+SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
{
char *sysinfo_table[] = {
utsname()->sysname,
return err;
}
-asmlinkage unsigned long
-osf_getsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes,
- int __user *start, void __user *arg)
+SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
+ unsigned long, nbytes, int __user *, start, void __user *, arg)
{
unsigned long w;
struct percpu_struct *cpu;
return -EOPNOTSUPP;
}
-asmlinkage unsigned long
-osf_setsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes,
- int __user *start, void __user *arg)
+SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
+ unsigned long, nbytes, int __user *, start, void __user *, arg)
{
switch (op) {
case SSI_IEEE_FP_CONTROL: {
value->tv_sec = jiffies / HZ;
}
-asmlinkage int
-osf_gettimeofday(struct timeval32 __user *tv, struct timezone __user *tz)
+SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
+ struct timezone __user *, tz)
{
if (tv) {
struct timeval ktv;
return 0;
}
-asmlinkage int
-osf_settimeofday(struct timeval32 __user *tv, struct timezone __user *tz)
+SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
+ struct timezone __user *, tz)
{
struct timespec kts;
struct timezone ktz;
return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
}
-asmlinkage int
-osf_getitimer(int which, struct itimerval32 __user *it)
+SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
{
struct itimerval kit;
int error;
return error;
}
-asmlinkage int
-osf_setitimer(int which, struct itimerval32 __user *in, struct itimerval32 __user *out)
+SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
+ struct itimerval32 __user *, out)
{
struct itimerval kin, kout;
int error;
}
-asmlinkage int
-osf_utimes(char __user *filename, struct timeval32 __user *tvs)
+SYSCALL_DEFINE2(osf_utimes, char __user *, filename,
+ struct timeval32 __user *, tvs)
{
struct timespec tv[2];
#define MAX_SELECT_SECONDS \
((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-asmlinkage int
-osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
- struct timeval32 __user *tvp)
+SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
+ fd_set __user *, exp, struct timeval32 __user *, tvp)
{
struct timespec end_time, *to = NULL;
if (tvp) {
long ru_nivcsw; /* involuntary " */
};
-asmlinkage int
-osf_getrusage(int who, struct rusage32 __user *ru)
+SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
{
struct rusage32 r;
return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
}
-asmlinkage long
-osf_wait4(pid_t pid, int __user *ustatus, int options,
- struct rusage32 __user *ur)
+SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
+ struct rusage32 __user *, ur)
{
struct rusage r;
long ret, err;
* seems to be a timeval pointer, and I suspect the second
* one is the time remaining.. Ho humm.. No documentation.
*/
-asmlinkage int
-osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remain)
+SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
+ struct timeval32 __user *, remain)
{
struct timeval tmp;
unsigned long ticks;
int :32; int :32; int :32; int :32;
};
-asmlinkage int
-sys_old_adjtimex(struct timex32 __user *txc_p)
+SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
{
struct timex txc;
int ret;
return 0;
}
-asmlinkage ssize_t
-osf_readv(unsigned long fd, const struct iovec __user * vector, unsigned long count)
+SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
+ const struct iovec __user *, vector, unsigned long, count)
{
if (unlikely(personality(current->personality) == PER_OSF4))
if (osf_fix_iov_len(vector, count))
return sys_readv(fd, vector, count);
}
-asmlinkage ssize_t
-osf_writev(unsigned long fd, const struct iovec __user * vector, unsigned long count)
+SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
+ const struct iovec __user *, vector, unsigned long, count)
{
if (unlikely(personality(current->personality) == PER_OSF4))
if (osf_fix_iov_len(vector, count))
/* Stubs for the routines in pci_iommu.c: */
void *
-pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
+__pci_alloc_consistent(struct pci_dev *pdev, size_t size,
+ dma_addr_t *dma_addrp, gfp_t gfp)
{
return NULL;
}
#include <linux/tty.h>
#include <linux/binfmts.h>
#include <linux/bitops.h>
+#include <linux/syscalls.h>
#include <asm/uaccess.h>
#include <asm/sigcontext.h>
* Note that we don't need to acquire the kernel lock for SMP
* operation, as all of this is local to this thread.
*/
-asmlinkage unsigned long
-do_osf_sigprocmask(int how, unsigned long newmask, struct pt_regs *regs)
+SYSCALL_DEFINE3(osf_sigprocmask, int, how, unsigned long, newmask,
+ struct pt_regs *, regs)
{
unsigned long oldmask = -EINVAL;
return oldmask;
}
-asmlinkage int
-osf_sigaction(int sig, const struct osf_sigaction __user *act,
- struct osf_sigaction __user *oact)
+SYSCALL_DEFINE3(osf_sigaction, int, sig,
+ const struct osf_sigaction __user *, act,
+ struct osf_sigaction __user *, oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
return ret;
}
-asmlinkage long
-sys_rt_sigaction(int sig, const struct sigaction __user *act,
- struct sigaction __user *oact,
- size_t sigsetsize, void __user *restorer)
+SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
+ struct sigaction __user *, oact,
+ size_t, sigsetsize, void __user *, restorer)
{
struct k_sigaction new_ka, old_ka;
int ret;
smp_callin(void)
{
int cpuid = hard_smp_processor_id();
+ cpumask_t mask = cpu_online_map;
- if (cpu_test_and_set(cpuid, cpu_online_map)) {
+ if (cpu_test_and_set(cpuid, mask)) {
printk("??, cpu 0x%x already present??\n", cpuid);
BUG();
}
.quad sys_write
.quad alpha_ni_syscall /* 5 */
.quad sys_close
- .quad osf_wait4
+ .quad sys_osf_wait4
.quad alpha_ni_syscall
.quad sys_link
.quad sys_unlink /* 10 */
.quad sys_mknod
.quad sys_chmod /* 15 */
.quad sys_chown
- .quad osf_brk
+ .quad sys_osf_brk
.quad alpha_ni_syscall
.quad sys_lseek
.quad sys_getxpid /* 20 */
- .quad osf_mount
+ .quad sys_osf_mount
.quad sys_umount
.quad sys_setuid
.quad sys_getxuid
.quad alpha_ni_syscall /* 40 */
.quad sys_dup
.quad sys_alpha_pipe
- .quad osf_set_program_attributes
+ .quad sys_osf_set_program_attributes
.quad alpha_ni_syscall
.quad sys_open /* 45 */
.quad alpha_ni_syscall
.quad sys_newlstat
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 70 */
- .quad osf_mmap
+ .quad sys_osf_mmap
.quad alpha_ni_syscall
.quad sys_munmap
.quad sys_mprotect
.quad sys_setgroups /* 80 */
.quad alpha_ni_syscall
.quad sys_setpgid
- .quad osf_setitimer
+ .quad sys_osf_setitimer
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 85 */
- .quad osf_getitimer
+ .quad sys_osf_getitimer
.quad sys_gethostname
.quad sys_sethostname
.quad sys_getdtablesize
.quad sys_dup2 /* 90 */
.quad sys_newfstat
.quad sys_fcntl
- .quad osf_select
+ .quad sys_osf_select
.quad sys_poll
.quad sys_fsync /* 95 */
.quad sys_setpriority
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 110 */
.quad sys_sigsuspend
- .quad osf_sigstack
+ .quad sys_osf_sigstack
.quad sys_recvmsg
.quad sys_sendmsg
.quad alpha_ni_syscall /* 115 */
- .quad osf_gettimeofday
- .quad osf_getrusage
+ .quad sys_osf_gettimeofday
+ .quad sys_osf_getrusage
.quad sys_getsockopt
.quad alpha_ni_syscall
#ifdef CONFIG_OSF4_COMPAT
- .quad osf_readv /* 120 */
- .quad osf_writev
+ .quad sys_osf_readv /* 120 */
+ .quad sys_osf_writev
#else
.quad sys_readv /* 120 */
.quad sys_writev
#endif
- .quad osf_settimeofday
+ .quad sys_osf_settimeofday
.quad sys_fchown
.quad sys_fchmod
.quad sys_recvfrom /* 125 */
.quad sys_socketpair /* 135 */
.quad sys_mkdir
.quad sys_rmdir
- .quad osf_utimes
+ .quad sys_osf_utimes
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 140 */
.quad sys_getpeername
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 155 */
- .quad osf_sigaction
+ .quad sys_osf_sigaction
.quad alpha_ni_syscall
.quad alpha_ni_syscall
- .quad osf_getdirentries
- .quad osf_statfs /* 160 */
- .quad osf_fstatfs
+ .quad sys_osf_getdirentries
+ .quad sys_osf_statfs /* 160 */
+ .quad sys_osf_fstatfs
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall
- .quad osf_getdomainname /* 165 */
+ .quad sys_osf_getdomainname /* 165 */
.quad sys_setdomainname
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad sys_semctl
.quad sys_semget /* 205 */
.quad sys_semop
- .quad osf_utsname
+ .quad sys_osf_utsname
.quad sys_lchown
.quad sys_shmat
.quad sys_shmctl /* 210 */
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 240 */
- .quad osf_sysinfo
+ .quad sys_osf_sysinfo
.quad alpha_ni_syscall
.quad alpha_ni_syscall
- .quad osf_proplist_syscall
+ .quad sys_osf_proplist_syscall
.quad alpha_ni_syscall /* 245 */
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 250 */
- .quad osf_usleep_thread
+ .quad sys_osf_usleep_thread
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad sys_sysfs
.quad alpha_ni_syscall /* 255 */
- .quad osf_getsysinfo
- .quad osf_setsysinfo
+ .quad sys_osf_getsysinfo
+ .quad sys_osf_setsysinfo
.quad alpha_ni_syscall
.quad alpha_ni_syscall
.quad alpha_ni_syscall /* 260 */
* that we can fit comfortably.
*
* First we need assembly templates of each of the patchable Guest operations,
- * and these are in lguest_asm.S. */
+ * and these are in i386_head.S. */
/*G:060 We construct a table from the assembler templates: */
static const struct lguest_insns
acpi_ht = 0;
#endif
- /* We set the perferred console to "hvc". This is the "hypervisor
+ /* We set the preferred console to "hvc". This is the "hypervisor
* virtual console" driver written by the PowerPC people, which we also
* adapted for lguest's use. */
add_preferred_console("hvc", 0, NULL);
root_id = root_node->node_id;
grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 10));
- if (card->bm_generation + 1 == generation ||
+ if (is_next_generation(generation, card->bm_generation) ||
(card->bm_generation != generation && grace)) {
/*
* This first step is to figure out who is IRM and
fw_core_initiate_bus_reset(card, 1);
mutex_lock(&card_mutex);
- list_del(&card->link);
+ list_del_init(&card->link);
mutex_unlock(&card_mutex);
/* Set up the dummy driver. */
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/idr.h>
+#include <linux/jiffies.h>
#include <linux/string.h>
#include <linux/rwsem.h>
#include <linux/semaphore.h>
return device;
}
+/*
+ * These defines control the retry behavior for reading the config
+ * rom. It shouldn't be necessary to tweak these; if the device
+ * doesn't respond to a config rom read within 10 seconds, it's not
+ * going to respond at all. As for the initial delay, a lot of
+ * devices will be able to respond within half a second after bus
+ * reset. On the other hand, it's not really worth being more
+ * aggressive than that, since it scales pretty well; if 10 devices
+ * are plugged in, they're all getting read within one second.
+ */
+
+#define MAX_RETRIES 10
+#define RETRY_DELAY (3 * HZ)
+#define INITIAL_DELAY (HZ / 2)
+#define SHUTDOWN_DELAY (2 * HZ)
+
static void fw_device_shutdown(struct work_struct *work)
{
struct fw_device *device =
container_of(work, struct fw_device, work.work);
int minor = MINOR(device->device.devt);
+ if (time_is_after_jiffies(device->card->reset_jiffies + SHUTDOWN_DELAY)
+ && !list_empty(&device->card->link)) {
+ schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
+ return;
+ }
+
+ if (atomic_cmpxchg(&device->state,
+ FW_DEVICE_GONE,
+ FW_DEVICE_SHUTDOWN) != FW_DEVICE_GONE)
+ return;
+
fw_device_cdev_remove(device);
device_for_each_child(&device->device, NULL, shutdown_unit);
device_unregister(&device->device);
down_write(&fw_device_rwsem);
idr_remove(&fw_device_idr, minor);
up_write(&fw_device_rwsem);
+
fw_device_put(device);
}
.release = fw_device_release,
};
+static void fw_device_update(struct work_struct *work);
+
/*
- * These defines control the retry behavior for reading the config
- * rom. It shouldn't be necessary to tweak these; if the device
- * doesn't respond to a config rom read within 10 seconds, it's not
- * going to respond at all. As for the initial delay, a lot of
- * devices will be able to respond within half a second after bus
- * reset. On the other hand, it's not really worth being more
- * aggressive than that, since it scales pretty well; if 10 devices
- * are plugged in, they're all getting read within one second.
+ * If a device was pending for deletion because its node went away but its
+ * bus info block and root directory header matches that of a newly discovered
+ * device, revive the existing fw_device.
+ * The newly allocated fw_device becomes obsolete instead.
*/
+static int lookup_existing_device(struct device *dev, void *data)
+{
+ struct fw_device *old = fw_device(dev);
+ struct fw_device *new = data;
+ struct fw_card *card = new->card;
+ int match = 0;
+
+ down_read(&fw_device_rwsem); /* serialize config_rom access */
+ spin_lock_irq(&card->lock); /* serialize node access */
+
+ if (memcmp(old->config_rom, new->config_rom, 6 * 4) == 0 &&
+ atomic_cmpxchg(&old->state,
+ FW_DEVICE_GONE,
+ FW_DEVICE_RUNNING) == FW_DEVICE_GONE) {
+ struct fw_node *current_node = new->node;
+ struct fw_node *obsolete_node = old->node;
+
+ new->node = obsolete_node;
+ new->node->data = new;
+ old->node = current_node;
+ old->node->data = old;
+
+ old->max_speed = new->max_speed;
+ old->node_id = current_node->node_id;
+ smp_wmb(); /* update node_id before generation */
+ old->generation = card->generation;
+ old->config_rom_retries = 0;
+ fw_notify("rediscovered device %s\n", dev_name(dev));
-#define MAX_RETRIES 10
-#define RETRY_DELAY (3 * HZ)
-#define INITIAL_DELAY (HZ / 2)
+ PREPARE_DELAYED_WORK(&old->work, fw_device_update);
+ schedule_delayed_work(&old->work, 0);
+
+ if (current_node == card->root_node)
+ fw_schedule_bm_work(card, 0);
+
+ match = 1;
+ }
+
+ spin_unlock_irq(&card->lock);
+ up_read(&fw_device_rwsem);
+
+ return match;
+}
static void fw_device_init(struct work_struct *work)
{
struct fw_device *device =
container_of(work, struct fw_device, work.work);
+ struct device *revived_dev;
int minor, err;
/*
return;
}
+ revived_dev = device_find_child(device->card->device,
+ device, lookup_existing_device);
+ if (revived_dev) {
+ put_device(revived_dev);
+ fw_device_release(&device->device);
+
+ return;
+ }
+
device_initialize(&device->device);
fw_device_get(device);
* fw_node_event().
*/
if (atomic_cmpxchg(&device->state,
- FW_DEVICE_INITIALIZING,
- FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN) {
- fw_device_shutdown(work);
+ FW_DEVICE_INITIALIZING,
+ FW_DEVICE_RUNNING) == FW_DEVICE_GONE) {
+ PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
+ schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
} else {
if (device->config_rom_retries)
fw_notify("created device %s: GUID %08x%08x, S%d00, "
case REREAD_BIB_UNCHANGED:
if (atomic_cmpxchg(&device->state,
- FW_DEVICE_INITIALIZING,
- FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN)
+ FW_DEVICE_INITIALIZING,
+ FW_DEVICE_RUNNING) == FW_DEVICE_GONE)
goto gone;
fw_device_update(work);
create_units(device);
if (atomic_cmpxchg(&device->state,
- FW_DEVICE_INITIALIZING,
- FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN)
+ FW_DEVICE_INITIALIZING,
+ FW_DEVICE_RUNNING) == FW_DEVICE_GONE)
goto gone;
fw_notify("refreshed device %s\n", dev_name(&device->device));
give_up:
fw_notify("giving up on refresh of device %s\n", dev_name(&device->device));
gone:
- atomic_set(&device->state, FW_DEVICE_SHUTDOWN);
- fw_device_shutdown(work);
+ atomic_set(&device->state, FW_DEVICE_GONE);
+ PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
+ schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
out:
if (node_id == card->root_node->node_id)
fw_schedule_bm_work(card, 0);
*/
device = node->data;
if (atomic_xchg(&device->state,
- FW_DEVICE_SHUTDOWN) == FW_DEVICE_RUNNING) {
+ FW_DEVICE_GONE) == FW_DEVICE_RUNNING) {
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
- schedule_delayed_work(&device->work, 0);
+ schedule_delayed_work(&device->work,
+ list_empty(&card->link) ? 0 : SHUTDOWN_DELAY);
}
break;
}
enum fw_device_state {
FW_DEVICE_INITIALIZING,
FW_DEVICE_RUNNING,
+ FW_DEVICE_GONE,
FW_DEVICE_SHUTDOWN,
};
#define CONTEXT_DEAD 0x0800
#define CONTEXT_ACTIVE 0x0400
-#define OHCI1394_MAX_AT_REQ_RETRIES 0x2
+#define OHCI1394_MAX_AT_REQ_RETRIES 0xf
#define OHCI1394_MAX_AT_RESP_RETRIES 0x2
#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8
for (i = 0; i < 10; i++) {
reg = reg_read(ctx->ohci, CONTROL_SET(ctx->regs));
if ((reg & CONTEXT_ACTIVE) == 0)
- break;
+ return;
- fw_notify("context_stop: still active (0x%08x)\n", reg);
mdelay(1);
}
+ fw_error("Error: DMA context still active (0x%08x)\n", reg);
}
struct driver_data {
int address_high;
unsigned int workarounds;
unsigned int mgt_orb_timeout;
+ unsigned int max_payload;
int dont_block; /* counter for each logical unit */
int blocked; /* ditto */
dma_addr_t page_table_bus;
};
+#define SBP2_ROM_VALUE_WILDCARD ~0 /* match all */
+#define SBP2_ROM_VALUE_MISSING 0xff000000 /* not present in the unit dir. */
+
/*
* List of devices with known bugs.
*
* The firmware_revision field, masked with 0xffff00, is the best
* indicator for the type of bridge chip of a device. It yields a few
* false positives but this did not break correctly behaving devices
- * so far. We use ~0 as a wildcard, since the 24 bit values we get
- * from the config rom can never match that.
+ * so far.
*/
static const struct {
u32 firmware_revision;
},
/* Initio bridges, actually only needed for some older ones */ {
.firmware_revision = 0x000200,
- .model = ~0,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_INQUIRY_36,
},
/* PL-3507 bridge with Prolific firmware */ {
.firmware_revision = 0x012800,
- .model = ~0,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_POWER_CONDITION,
},
/* Symbios bridge */ {
.firmware_revision = 0xa0b800,
- .model = ~0,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
},
/* Datafab MD2-FW2 with Symbios/LSILogic SYM13FW500 bridge */ {
.firmware_revision = 0x002600,
- .model = ~0,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
},
-
/*
- * There are iPods (2nd gen, 3rd gen) with model_id == 0, but
- * these iPods do not feature the read_capacity bug according
- * to one report. Read_capacity behaviour as well as model_id
- * could change due to Apple-supplied firmware updates though.
+ * iPod 2nd generation: needs 128k max transfer size workaround
+ * iPod 3rd generation: needs fix capacity workaround
*/
-
- /* iPod 4th generation. */ {
+ {
+ .firmware_revision = 0x0a2700,
+ .model = 0x000000,
+ .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS |
+ SBP2_WORKAROUND_FIX_CAPACITY,
+ },
+ /* iPod 4th generation */ {
.firmware_revision = 0x0a2700,
.model = 0x000021,
.workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
continue;
if (sbp2_workarounds_table[i].model != model &&
- sbp2_workarounds_table[i].model != ~0)
+ sbp2_workarounds_table[i].model != SBP2_ROM_VALUE_WILDCARD)
continue;
w |= sbp2_workarounds_table[i].workarounds;
fw_device_get(device);
fw_unit_get(unit);
- /* Initialize to values that won't match anything in our table. */
- firmware_revision = 0xff000000;
- model = 0xff000000;
-
/* implicit directory ID */
tgt->directory_id = ((unit->directory - device->config_rom) * 4
+ CSR_CONFIG_ROM) & 0xffffff;
+ firmware_revision = SBP2_ROM_VALUE_MISSING;
+ model = SBP2_ROM_VALUE_MISSING;
+
if (sbp2_scan_unit_dir(tgt, unit->directory, &model,
&firmware_revision) < 0)
goto fail_tgt_put;
sbp2_init_workarounds(tgt, model, firmware_revision);
+ /*
+ * At S100 we can do 512 bytes per packet, at S200 1024 bytes,
+ * and so on up to 4096 bytes. The SBP-2 max_payload field
+ * specifies the max payload size as 2 ^ (max_payload + 2), so
+ * if we set this to max_speed + 7, we get the right value.
+ */
+ tgt->max_payload = min(device->max_speed + 7, 10U);
+ tgt->max_payload = min(tgt->max_payload, device->card->max_receive - 1);
+
/* Do the login in a workqueue so we can easily reschedule retries. */
list_for_each_entry(lu, &tgt->lu_list, link)
sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5));
.id_table = sbp2_id_table,
};
+static void sbp2_unmap_scatterlist(struct device *card_device,
+ struct sbp2_command_orb *orb)
+{
+ if (scsi_sg_count(orb->cmd))
+ dma_unmap_sg(card_device, scsi_sglist(orb->cmd),
+ scsi_sg_count(orb->cmd),
+ orb->cmd->sc_data_direction);
+
+ if (orb->request.misc & cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT))
+ dma_unmap_single(card_device, orb->page_table_bus,
+ sizeof(orb->page_table), DMA_TO_DEVICE);
+}
+
static unsigned int
sbp2_status_to_sense_data(u8 *sbp2_status, u8 *sense_data)
{
dma_unmap_single(device->card->device, orb->base.request_bus,
sizeof(orb->request), DMA_TO_DEVICE);
-
- if (scsi_sg_count(orb->cmd) > 0)
- dma_unmap_sg(device->card->device, scsi_sglist(orb->cmd),
- scsi_sg_count(orb->cmd),
- orb->cmd->sc_data_direction);
-
- if (orb->page_table_bus != 0)
- dma_unmap_single(device->card->device, orb->page_table_bus,
- sizeof(orb->page_table), DMA_TO_DEVICE);
+ sbp2_unmap_scatterlist(device->card->device, orb);
orb->cmd->result = result;
orb->done(orb->cmd);
struct sbp2_logical_unit *lu = cmd->device->hostdata;
struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
struct sbp2_command_orb *orb;
- unsigned int max_payload;
int generation, retval = SCSI_MLQUEUE_HOST_BUSY;
/*
orb->done = done;
orb->cmd = cmd;
- orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
- /*
- * At speed 100 we can do 512 bytes per packet, at speed 200,
- * 1024 bytes per packet etc. The SBP-2 max_payload field
- * specifies the max payload size as 2 ^ (max_payload + 2), so
- * if we set this to max_speed + 7, we get the right value.
- */
- max_payload = min(device->max_speed + 7,
- device->card->max_receive - 1);
+ orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
orb->request.misc = cpu_to_be32(
- COMMAND_ORB_MAX_PAYLOAD(max_payload) |
+ COMMAND_ORB_MAX_PAYLOAD(lu->tgt->max_payload) |
COMMAND_ORB_SPEED(device->max_speed) |
COMMAND_ORB_NOTIFY);
orb->base.request_bus =
dma_map_single(device->card->device, &orb->request,
sizeof(orb->request), DMA_TO_DEVICE);
- if (dma_mapping_error(device->card->device, orb->base.request_bus))
+ if (dma_mapping_error(device->card->device, orb->base.request_bus)) {
+ sbp2_unmap_scatterlist(device->card->device, orb);
goto out;
+ }
sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, generation,
lu->command_block_agent_address + SBP2_ORB_POINTER);
struct fw_node *local_node;
unsigned long flags;
+ /*
+ * If the selfID buffer is not the immediate successor of the
+ * previously processed one, we cannot reliably compare the
+ * old and new topologies.
+ */
+ if (!is_next_generation(generation, card->generation) &&
+ card->local_node != NULL) {
+ fw_notify("skipped bus generations, destroying all nodes\n");
+ fw_destroy_nodes(card);
+ card->bm_retries = 0;
+ }
+
spin_lock_irqsave(&card->lock, flags);
card->node_id = node_id;
extern void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
+/*
+ * Check whether new_generation is the immediate successor of old_generation.
+ * Take counter roll-over at 255 (as per to OHCI) into account.
+ */
+static inline bool is_next_generation(int new_generation, int old_generation)
+{
+ return (new_generation & 0xff) == ((old_generation + 1) & 0xff);
+}
+
/*
* The iso packet format allows for an immediate header/payload part
* stored in 'header' immediately after the packet info plus an
} else {
status = -EBUSY;
module_put(chip->owner);
+ goto done;
}
if (chip->request) {
if (dev_priv->panel_fixed_mode != NULL) {
struct drm_display_mode *mode;
- mutex_unlock(&dev->mode_config.mutex);
+ mutex_lock(&dev->mode_config.mutex);
mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode);
drm_mode_probed_add(connector, mode);
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL_GPL(hid_connect);
+/* a list of devices for which there is a specialized driver on HID bus */
static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
.uevent = hid_uevent,
};
+/* a list of devices that shouldn't be handled by HID core at all */
static const struct hid_device_id hid_ignore_list[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD3) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD4) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD5) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD 0x0038
#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD2 0x0036
#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD3 0x0034
+#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD4 0x0044
+#define USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD5 0x0045
#define USB_VENDOR_ID_SUN 0x0430
#define USB_DEVICE_ID_RARITAN_KVM_DONGLE 0xcdab
#define MS_NOGET 0x10
/*
- * Microsoft Wireless Desktop Receiver (Model 1028) has several
+ * Microsoft Wireless Desktop Receiver (Model 1028) has
* 'Usage Min/Max' where it ought to have 'Physical Min/Max'
*/
static void ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
- if ((quirks & MS_RDESC) && rsize == 571 && rdesc[284] == 0x19 &&
- rdesc[286] == 0x2a && rdesc[304] == 0x19 &&
- rdesc[306] == 0x29 && rdesc[352] == 0x1a &&
- rdesc[355] == 0x2a && rdesc[557] == 0x19 &&
+ if ((quirks & MS_RDESC) && rsize == 571 && rdesc[557] == 0x19 &&
rdesc[559] == 0x29) {
dev_info(&hdev->dev, "fixing up Microsoft Wireless Receiver "
"Model 1028 report descriptor\n");
- rdesc[284] = rdesc[304] = rdesc[557] = 0x35;
- rdesc[352] = 0x36;
- rdesc[286] = rdesc[355] = 0x46;
- rdesc[306] = rdesc[559] = 0x45;
+ rdesc[557] = 0x35;
+ rdesc[559] = 0x45;
}
}
case HIDIOCGSTRING:
mutex_lock(&hiddev->existancelock);
- if (!hiddev->exist)
+ if (hiddev->exist)
r = hiddev_ioctl_string(hiddev, cmd, user_arg);
else
r = -ENODEV;
/*
* Temperature sensors keys (sp78 - 2 bytes).
*/
-static const char* temperature_sensors_sets[][36] = {
+static const char *temperature_sensors_sets[][41] = {
/* Set 0: Macbook Pro */
{ "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H",
"Th1H", "Tm0P", "Ts0P", "Ts1P", NULL },
{ "TB0T", "TB1S", "TB1T", "TB2S", "TB2T", "TC0D", "TN0D", "TTF0",
"TV0P", "TVFP", "TW0P", "Th0P", "Tp0P", "Tp1P", "TpFP", "Ts0P",
"Ts0S", NULL },
+/* Set 16: Mac Pro 3,1 (2 x Quad-Core) */
+ { "TA0P", "TCAG", "TCAH", "TCBG", "TCBH", "TC0C", "TC0D", "TC0P",
+ "TC1C", "TC1D", "TC2C", "TC2D", "TC3C", "TC3D", "TH0P", "TH1P",
+ "TH2P", "TH3P", "TMAP", "TMAS", "TMBS", "TM0P", "TM0S", "TM1P",
+ "TM1S", "TM2P", "TM2S", "TM3S", "TM8P", "TM8S", "TM9P", "TM9S",
+ "TN0C", "TN0D", "TN0H", "TS0C", "Tp0C", "Tp1C", "Tv0S", "Tv1S",
+ NULL },
};
/* List of keys used to read/write fan speeds */
applesmc_show_temperature, NULL, 33);
static SENSOR_DEVICE_ATTR(temp35_input, S_IRUGO,
applesmc_show_temperature, NULL, 34);
+static SENSOR_DEVICE_ATTR(temp36_input, S_IRUGO,
+ applesmc_show_temperature, NULL, 35);
+static SENSOR_DEVICE_ATTR(temp37_input, S_IRUGO,
+ applesmc_show_temperature, NULL, 36);
+static SENSOR_DEVICE_ATTR(temp38_input, S_IRUGO,
+ applesmc_show_temperature, NULL, 37);
+static SENSOR_DEVICE_ATTR(temp39_input, S_IRUGO,
+ applesmc_show_temperature, NULL, 38);
+static SENSOR_DEVICE_ATTR(temp40_input, S_IRUGO,
+ applesmc_show_temperature, NULL, 39);
static struct attribute *temperature_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp33_input.dev_attr.attr,
&sensor_dev_attr_temp34_input.dev_attr.attr,
&sensor_dev_attr_temp35_input.dev_attr.attr,
+ &sensor_dev_attr_temp36_input.dev_attr.attr,
+ &sensor_dev_attr_temp37_input.dev_attr.attr,
+ &sensor_dev_attr_temp38_input.dev_attr.attr,
+ &sensor_dev_attr_temp39_input.dev_attr.attr,
+ &sensor_dev_attr_temp40_input.dev_attr.attr,
NULL
};
{ .accelerometer = 0, .light = 0, .temperature_set = 14 },
/* MacBook Air 2,1: accelerometer, backlight and temperature set 15 */
{ .accelerometer = 1, .light = 1, .temperature_set = 15 },
+/* MacPro3,1: temperature set 16 */
+ { .accelerometer = 0, .light = 0, .temperature_set = 16 },
};
/* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacPro2") },
&applesmc_dmi_data[4]},
+ { applesmc_dmi_match, "Apple MacPro3", {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacPro3") },
+ &applesmc_dmi_data[16]},
{ applesmc_dmi_match, "Apple MacPro", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") },
#define IEEE1394_SPEED_800 0x03
#define IEEE1394_SPEED_1600 0x04
#define IEEE1394_SPEED_3200 0x05
-
-/* The current highest tested speed supported by the subsystem */
-#define IEEE1394_SPEED_MAX IEEE1394_SPEED_800
+#define IEEE1394_SPEED_MAX IEEE1394_SPEED_3200
/* Maps speed values above to a string representation */
extern const char *hpsb_speedto_str[];
u8 cldcnt[nodecount];
u8 *map = host->speed_map;
u8 *speedcap = host->speed;
+ u8 local_link_speed = host->csr.lnk_spd;
struct selfid *sid;
struct ext_selfid *esid;
int i, j, n;
if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
speedcap[n] = sid->speed;
- if (speedcap[n] > host->csr.lnk_spd)
- speedcap[n] = host->csr.lnk_spd;
+ if (speedcap[n] > local_link_speed)
+ speedcap[n] = local_link_speed;
n--;
}
}
}
}
-#if SELFID_SPEED_UNKNOWN != IEEE1394_SPEED_MAX
- /* assume maximum speed for 1394b PHYs, nodemgr will correct it */
- for (n = 0; n < nodecount; n++)
- if (speedcap[n] == SELFID_SPEED_UNKNOWN)
- speedcap[n] = IEEE1394_SPEED_MAX;
-#endif
+ /* assume a maximum speed for 1394b PHYs, nodemgr will correct it */
+ if (local_link_speed > SELFID_SPEED_UNKNOWN)
+ for (i = 0; i < nodecount; i++)
+ if (speedcap[i] == SELFID_SPEED_UNKNOWN)
+ speedcap[i] = local_link_speed;
}
#define OHCI1394_DRIVER_NAME "ohci1394"
-#define OHCI1394_MAX_AT_REQ_RETRIES 0x2
+#define OHCI1394_MAX_AT_REQ_RETRIES 0xf
#define OHCI1394_MAX_AT_RESP_RETRIES 0x2
#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8
#define OHCI1394_MAX_SELF_ID_ERRORS 16
*/
static int sbp2_max_speed = IEEE1394_SPEED_MAX;
module_param_named(max_speed, sbp2_max_speed, int, 0644);
-MODULE_PARM_DESC(max_speed, "Force max speed "
- "(3 = 800Mb/s, 2 = 400Mb/s, 1 = 200Mb/s, 0 = 100Mb/s)");
+MODULE_PARM_DESC(max_speed, "Limit data transfer speed (5 <= 3200, "
+ "4 <= 1600, 3 <= 800, 2 <= 400, 1 <= 200, 0 = 100 Mb/s)");
/*
* Set serialize_io to 0 or N to use dynamically appended lists of command ORBs.
static int sbp2_max_speed_and_size(struct sbp2_lu *);
-static const u8 sbp2_speedto_max_payload[] = { 0x7, 0x8, 0x9, 0xA, 0xB, 0xC };
+static const u8 sbp2_speedto_max_payload[] = { 0x7, 0x8, 0x9, 0xa, 0xa, 0xa };
static DEFINE_RWLOCK(sbp2_hi_logical_units_lock);
.sdev_attrs = sbp2_sysfs_sdev_attrs,
};
-/* for match-all entries in sbp2_workarounds_table */
-#define SBP2_ROM_VALUE_WILDCARD 0x1000000
+#define SBP2_ROM_VALUE_WILDCARD ~0 /* match all */
+#define SBP2_ROM_VALUE_MISSING 0xff000000 /* not present in the unit dir. */
/*
* List of devices with known bugs.
*/
static const struct {
u32 firmware_revision;
- u32 model_id;
+ u32 model;
unsigned workarounds;
} sbp2_workarounds_table[] = {
/* DViCO Momobay CX-1 with TSB42AA9 bridge */ {
.firmware_revision = 0x002800,
- .model_id = 0x001010,
+ .model = 0x001010,
.workarounds = SBP2_WORKAROUND_INQUIRY_36 |
SBP2_WORKAROUND_MODE_SENSE_8 |
SBP2_WORKAROUND_POWER_CONDITION,
},
/* DViCO Momobay FX-3A with TSB42AA9A bridge */ {
.firmware_revision = 0x002800,
- .model_id = 0x000000,
+ .model = 0x000000,
.workarounds = SBP2_WORKAROUND_DELAY_INQUIRY |
SBP2_WORKAROUND_POWER_CONDITION,
},
/* Initio bridges, actually only needed for some older ones */ {
.firmware_revision = 0x000200,
- .model_id = SBP2_ROM_VALUE_WILDCARD,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_INQUIRY_36,
},
/* PL-3507 bridge with Prolific firmware */ {
.firmware_revision = 0x012800,
- .model_id = SBP2_ROM_VALUE_WILDCARD,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_POWER_CONDITION,
},
/* Symbios bridge */ {
.firmware_revision = 0xa0b800,
- .model_id = SBP2_ROM_VALUE_WILDCARD,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
},
/* Datafab MD2-FW2 with Symbios/LSILogic SYM13FW500 bridge */ {
.firmware_revision = 0x002600,
- .model_id = SBP2_ROM_VALUE_WILDCARD,
+ .model = SBP2_ROM_VALUE_WILDCARD,
.workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
},
+ /*
+ * iPod 2nd generation: needs 128k max transfer size workaround
+ * iPod 3rd generation: needs fix capacity workaround
+ */
+ {
+ .firmware_revision = 0x0a2700,
+ .model = 0x000000,
+ .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS |
+ SBP2_WORKAROUND_FIX_CAPACITY,
+ },
/* iPod 4th generation */ {
.firmware_revision = 0x0a2700,
- .model_id = 0x000021,
+ .model = 0x000021,
.workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
},
/* iPod mini */ {
.firmware_revision = 0x0a2700,
- .model_id = 0x000022,
+ .model = 0x000022,
.workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
},
/* iPod mini */ {
.firmware_revision = 0x0a2700,
- .model_id = 0x000023,
+ .model = 0x000023,
.workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
},
/* iPod Photo */ {
.firmware_revision = 0x0a2700,
- .model_id = 0x00007e,
+ .model = 0x00007e,
.workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
}
};
struct csr1212_keyval *kv;
struct csr1212_dentry *dentry;
u64 management_agent_addr;
- u32 unit_characteristics, firmware_revision;
+ u32 unit_characteristics, firmware_revision, model;
unsigned workarounds;
int i;
management_agent_addr = 0;
unit_characteristics = 0;
- firmware_revision = 0;
+ firmware_revision = SBP2_ROM_VALUE_MISSING;
+ model = ud->flags & UNIT_DIRECTORY_MODEL_ID ?
+ ud->model_id : SBP2_ROM_VALUE_MISSING;
csr1212_for_each_dir_entry(ud->ne->csr, kv, ud->ud_kv, dentry) {
switch (kv->key.id) {
sbp2_workarounds_table[i].firmware_revision !=
(firmware_revision & 0xffff00))
continue;
- if (sbp2_workarounds_table[i].model_id !=
+ if (sbp2_workarounds_table[i].model !=
SBP2_ROM_VALUE_WILDCARD &&
- sbp2_workarounds_table[i].model_id != ud->model_id)
+ sbp2_workarounds_table[i].model != model)
continue;
workarounds |= sbp2_workarounds_table[i].workarounds;
break;
NODE_BUS_ARGS(ud->ne->host, ud->ne->nodeid),
workarounds, firmware_revision,
ud->vendor_id ? ud->vendor_id : ud->ne->vendor_id,
- ud->model_id);
+ model);
/* We would need one SCSI host template for each target to adjust
* max_sectors on the fly, therefore warn only. */
break;
/* If the Guest asked to be stopped, we sleep. The Guest's
- * clock timer or LHCALL_BREAK from the Waker will wake us. */
+ * clock timer or LHREQ_BREAK from the Waker will wake us. */
if (cpu->halted) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
* kmalloc()ed string, either of which is ok to hand to kfree(). */
if (!IS_ERR(lg->dead))
kfree(lg->dead);
- /* We clear the entire structure, which also marks it as free for the
- * next user. */
- memset(lg, 0, sizeof(*lg));
+ /* Free the memory allocated to the lguest_struct */
+ kfree(lg);
/* Release lock and exit. */
mutex_unlock(&lguest_lock);
class_destroy(ilo_class);
}
-MODULE_VERSION("0.05");
+MODULE_VERSION("0.06");
MODULE_ALIAS(ILO_NAME);
MODULE_DESCRIPTION(ILO_NAME);
MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");
if (ch->flags & (XPC_C_CONNECTED | XPC_C_DISCONNECTING))
return;
-
- DBUG_ON(ch->local_msgqueue == NULL);
- DBUG_ON(ch->remote_msgqueue == NULL);
}
if (!(ch->flags & XPC_C_OPENREPLY)) {
int n_IRQs_expected;
int n_IRQs_detected;
- DBUG_ON(xpc_activate_IRQ_rcvd == 0);
-
spin_lock_irqsave(&xpc_activate_IRQ_rcvd_lock, irq_flags);
n_IRQs_expected = xpc_activate_IRQ_rcvd;
xpc_activate_IRQ_rcvd = 0;
msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->local_msgqueue +
(get % ch->local_nentries) *
ch->entry_size);
+ DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
msg->flags = 0;
} while (++get < ch_sn2->remote_GP.get);
}
struct xpc_msg_sn2 *msg;
s64 put;
- put = ch_sn2->w_remote_GP.put;
+ /* flags are zeroed when the buffer is allocated */
+ if (ch_sn2->remote_GP.put < ch->remote_nentries)
+ return;
+
+ put = max(ch_sn2->w_remote_GP.put, ch->remote_nentries);
do {
msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->remote_msgqueue +
(put % ch->remote_nentries) *
ch->entry_size);
+ DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
+ DBUG_ON(!(msg->flags & XPC_M_SN2_DONE));
+ DBUG_ON(msg->number != put - ch->remote_nentries);
msg->flags = 0;
} while (++put < ch_sn2->remote_GP.put);
}
*/
xpc_clear_remote_msgqueue_flags_sn2(ch);
+ smp_wmb(); /* ensure flags have been cleared before bte_copy */
ch_sn2->w_remote_GP.put = ch_sn2->remote_GP.put;
dev_dbg(xpc_chan, "w_remote_GP.put changed to %ld, partid=%d, "
break;
get = ch_sn2->w_local_GP.get;
- rmb(); /* guarantee that .get loads before .put */
+ smp_rmb(); /* guarantee that .get loads before .put */
if (get == ch_sn2->w_remote_GP.put)
break;
msg = xpc_pull_remote_msg_sn2(ch, get);
- DBUG_ON(msg != NULL && msg->number != get);
- DBUG_ON(msg != NULL && (msg->flags & XPC_M_SN2_DONE));
- DBUG_ON(msg != NULL && !(msg->flags & XPC_M_SN2_READY));
+ if (msg != NULL) {
+ DBUG_ON(msg->number != get);
+ DBUG_ON(msg->flags & XPC_M_SN2_DONE);
+ DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
- payload = &msg->payload;
+ payload = &msg->payload;
+ }
break;
}
while (1) {
put = ch_sn2->w_local_GP.put;
- rmb(); /* guarantee that .put loads before .get */
+ smp_rmb(); /* guarantee that .put loads before .get */
if (put - ch_sn2->w_remote_GP.get < ch->local_nentries) {
/* There are available message entries. We need to try
* The preceding store of msg->flags must occur before the following
* load of local_GP->put.
*/
- mb();
+ smp_mb();
/* see if the message is next in line to be sent, if so send it */
dev_dbg(xpc_chan, "msg=0x%p, msg_number=%ld, partid=%d, channel=%d\n",
(void *)msg, msg_number, ch->partid, ch->number);
- DBUG_ON((((u64)msg - (u64)ch->remote_msgqueue) / ch->entry_size) !=
+ DBUG_ON((((u64)msg - (u64)ch->sn.sn2.remote_msgqueue) / ch->entry_size) !=
msg_number % ch->remote_nentries);
+ DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
DBUG_ON(msg->flags & XPC_M_SN2_DONE);
msg->flags |= XPC_M_SN2_DONE;
* The preceding store of msg->flags must occur before the following
* load of local_GP->get.
*/
- mb();
+ smp_mb();
/*
* See if this message is next in line to be acknowledged as having
atomic_inc(&ch->n_to_notify);
msg_slot->key = key;
- wmb(); /* a non-NULL func must hit memory after the key */
+ smp_wmb(); /* a non-NULL func must hit memory after the key */
msg_slot->func = func;
if (ch->flags & XPC_C_DISCONNECTING) {
This option switches the background thread off by default. The thread
may be also be enabled/disabled via UBI sysfs.
-config MTD_UBI_DEBUG_USERSPACE_IO
- bool "Direct user-space write/erase support"
- default n
- depends on MTD_UBI_DEBUG
- help
- By default, users cannot directly write and erase individual
- eraseblocks of dynamic volumes, and have to use update operation
- instead. This option enables this capability - it is very useful for
- debugging and testing.
-
config MTD_UBI_DEBUG_EMULATE_BITFLIPS
bool "Emulate flash bit-flips"
depends on MTD_UBI_DEBUG
return ret;
}
-/* Fake "release" method for UBI devices */
-static void dev_release(struct device *dev) { }
+static void dev_release(struct device *dev)
+{
+ struct ubi_device *ubi = container_of(dev, struct ubi_device, dev);
+
+ kfree(ubi);
+}
/**
* ubi_sysfs_init - initialize sysfs for an UBI device.
*/
static int uif_init(struct ubi_device *ubi)
{
- int i, err, do_free = 0;
+ int i, err;
dev_t dev;
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
out_volumes:
kill_volumes(ubi);
- do_free = 0;
out_sysfs:
ubi_sysfs_close(ubi);
cdev_del(&ubi->cdev);
out_unreg:
- if (do_free)
- free_user_volumes(ubi);
unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1);
ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
return err;
if (ubi->bgt_thread)
kthread_stop(ubi->bgt_thread);
+ /*
+ * Get a reference to the device in order to prevent 'dev_release()'
+ * from freeing @ubi object.
+ */
+ get_device(&ubi->dev);
+
uif_close(ubi);
ubi_wl_close(ubi);
free_internal_volumes(ubi);
vfree(ubi->dbg_peb_buf);
#endif
ubi_msg("mtd%d is detached from ubi%d", ubi->mtd->index, ubi->ubi_num);
- kfree(ubi);
+ put_device(&ubi->dev);
return 0;
}
#include <linux/ioctl.h>
#include <linux/capability.h>
#include <linux/uaccess.h>
-#include <linux/smp_lock.h>
+#include <linux/compat.h>
+#include <linux/math64.h>
#include <mtd/ubi-user.h>
-#include <asm/div64.h>
#include "ubi.h"
/**
int err, lnum, off, len, tbuf_size;
size_t count_save = count;
void *tbuf;
- uint64_t tmp;
dbg_gen("read %zd bytes from offset %lld of volume %d",
count, *offp, vol->vol_id);
return -ENOMEM;
len = count > tbuf_size ? tbuf_size : count;
-
- tmp = *offp;
- off = do_div(tmp, vol->usable_leb_size);
- lnum = tmp;
+ lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);
do {
cond_resched();
return err ? err : count_save - count;
}
-#ifdef CONFIG_MTD_UBI_DEBUG_USERSPACE_IO
-
/*
* This function allows to directly write to dynamic UBI volumes, without
- * issuing the volume update operation. Available only as a debugging feature.
- * Very useful for testing UBI.
+ * issuing the volume update operation.
*/
static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf,
size_t count, loff_t *offp)
int lnum, off, len, tbuf_size, err = 0;
size_t count_save = count;
char *tbuf;
- uint64_t tmp;
+
+ if (!vol->direct_writes)
+ return -EPERM;
dbg_gen("requested: write %zd bytes to offset %lld of volume %u",
count, *offp, vol->vol_id);
if (vol->vol_type == UBI_STATIC_VOLUME)
return -EROFS;
- tmp = *offp;
- off = do_div(tmp, vol->usable_leb_size);
- lnum = tmp;
-
+ lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);
if (off & (ubi->min_io_size - 1)) {
dbg_err("unaligned position");
return -EINVAL;
return err ? err : count_save - count;
}
-#else
-#define vol_cdev_direct_write(file, buf, count, offp) (-EPERM)
-#endif /* CONFIG_MTD_UBI_DEBUG_USERSPACE_IO */
-
static ssize_t vol_cdev_write(struct file *file, const char __user *buf,
size_t count, loff_t *offp)
{
return count;
}
-static int vol_cdev_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int err = 0;
struct ubi_volume_desc *desc = file->private_data;
break;
}
-#ifdef CONFIG_MTD_UBI_DEBUG_USERSPACE_IO
/* Logical eraseblock erasure command */
case UBI_IOCEBER:
{
err = ubi_wl_flush(ubi);
break;
}
-#endif
+
+ /* Logical eraseblock map command */
+ case UBI_IOCEBMAP:
+ {
+ struct ubi_map_req req;
+
+ err = copy_from_user(&req, argp, sizeof(struct ubi_map_req));
+ if (err) {
+ err = -EFAULT;
+ break;
+ }
+ err = ubi_leb_map(desc, req.lnum, req.dtype);
+ break;
+ }
+
+ /* Logical eraseblock un-map command */
+ case UBI_IOCEBUNMAP:
+ {
+ int32_t lnum;
+
+ err = get_user(lnum, (__user int32_t *)argp);
+ if (err) {
+ err = -EFAULT;
+ break;
+ }
+ err = ubi_leb_unmap(desc, lnum);
+ break;
+ }
+
+ /* Check if logical eraseblock is mapped command */
+ case UBI_IOCEBISMAP:
+ {
+ int32_t lnum;
+
+ err = get_user(lnum, (__user int32_t *)argp);
+ if (err) {
+ err = -EFAULT;
+ break;
+ }
+ err = ubi_is_mapped(desc, lnum);
+ break;
+ }
+
+ /* Set volume property command*/
+ case UBI_IOCSETPROP:
+ {
+ struct ubi_set_prop_req req;
+
+ err = copy_from_user(&req, argp,
+ sizeof(struct ubi_set_prop_req));
+ if (err) {
+ err = -EFAULT;
+ break;
+ }
+ switch (req.property) {
+ case UBI_PROP_DIRECT_WRITE:
+ mutex_lock(&ubi->volumes_mutex);
+ desc->vol->direct_writes = !!req.value;
+ mutex_unlock(&ubi->volumes_mutex);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ break;
+ }
default:
err = -ENOTTY;
break;
}
-
return err;
}
return err;
}
-static int ubi_cdev_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int err = 0;
struct ubi_device *ubi;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
- ubi = ubi_get_by_major(imajor(inode));
+ ubi = ubi_get_by_major(imajor(file->f_mapping->host));
if (!ubi)
return -ENODEV;
case UBI_IOCRSVOL:
{
int pebs;
- uint64_t tmp;
struct ubi_rsvol_req req;
dbg_gen("re-size volume");
break;
}
- tmp = req.bytes;
- pebs = !!do_div(tmp, desc->vol->usable_leb_size);
- pebs += tmp;
+ pebs = div_u64(req.bytes + desc->vol->usable_leb_size - 1,
+ desc->vol->usable_leb_size);
mutex_lock(&ubi->volumes_mutex);
err = ubi_resize_volume(desc, pebs);
return err;
}
-static int ctrl_cdev_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long ctrl_cdev_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int err = 0;
void __user *argp = (void __user *)arg;
return err;
}
-/* UBI control character device operations */
-struct file_operations ubi_ctrl_cdev_operations = {
- .ioctl = ctrl_cdev_ioctl,
- .owner = THIS_MODULE,
+#ifdef CONFIG_COMPAT
+static long vol_cdev_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned long translated_arg = (unsigned long)compat_ptr(arg);
+
+ return vol_cdev_ioctl(file, cmd, translated_arg);
+}
+
+static long ubi_cdev_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned long translated_arg = (unsigned long)compat_ptr(arg);
+
+ return ubi_cdev_ioctl(file, cmd, translated_arg);
+}
+
+static long ctrl_cdev_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned long translated_arg = (unsigned long)compat_ptr(arg);
+
+ return ctrl_cdev_ioctl(file, cmd, translated_arg);
+}
+#else
+#define vol_cdev_compat_ioctl NULL
+#define ubi_cdev_compat_ioctl NULL
+#define ctrl_cdev_compat_ioctl NULL
+#endif
+
+/* UBI volume character device operations */
+const struct file_operations ubi_vol_cdev_operations = {
+ .owner = THIS_MODULE,
+ .open = vol_cdev_open,
+ .release = vol_cdev_release,
+ .llseek = vol_cdev_llseek,
+ .read = vol_cdev_read,
+ .write = vol_cdev_write,
+ .unlocked_ioctl = vol_cdev_ioctl,
+ .compat_ioctl = vol_cdev_compat_ioctl,
};
/* UBI character device operations */
-struct file_operations ubi_cdev_operations = {
- .owner = THIS_MODULE,
- .ioctl = ubi_cdev_ioctl,
- .llseek = no_llseek,
+const struct file_operations ubi_cdev_operations = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .unlocked_ioctl = ubi_cdev_ioctl,
+ .compat_ioctl = ubi_cdev_compat_ioctl,
};
-/* UBI volume character device operations */
-struct file_operations ubi_vol_cdev_operations = {
- .owner = THIS_MODULE,
- .open = vol_cdev_open,
- .release = vol_cdev_release,
- .llseek = vol_cdev_llseek,
- .read = vol_cdev_read,
- .write = vol_cdev_write,
- .ioctl = vol_cdev_ioctl,
+/* UBI control character device operations */
+const struct file_operations ubi_ctrl_cdev_operations = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = ctrl_cdev_ioctl,
+ .compat_ioctl = ctrl_cdev_compat_ioctl,
};
* eraseblock size is equivalent to the logical eraseblock size of the volume.
*/
-#include <asm/div64.h>
+#include <linux/math64.h>
#include "ubi.h"
/**
int err = 0, lnum, offs, total_read;
struct ubi_volume *vol;
struct ubi_device *ubi;
- uint64_t tmp = from;
dbg_gen("read %zd bytes from offset %lld", len, from);
vol = container_of(mtd, struct ubi_volume, gluebi_mtd);
ubi = vol->ubi;
- offs = do_div(tmp, mtd->erasesize);
- lnum = tmp;
-
+ lnum = div_u64_rem(from, mtd->erasesize, &offs);
total_read = len;
while (total_read) {
size_t to_read = mtd->erasesize - offs;
int err = 0, lnum, offs, total_written;
struct ubi_volume *vol;
struct ubi_device *ubi;
- uint64_t tmp = to;
dbg_gen("write %zd bytes to offset %lld", len, to);
if (ubi->ro_mode)
return -EROFS;
- offs = do_div(tmp, mtd->erasesize);
- lnum = tmp;
+ lnum = div_u64_rem(to, mtd->erasesize, &offs);
if (len % mtd->writesize || offs % mtd->writesize)
return -EINVAL;
#include <linux/err.h>
#include <linux/crc32.h>
-#include <asm/div64.h>
+#include <linux/math64.h>
#include "ubi.h"
#ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
dbg_msg("scanning is finished");
/* Calculate mean erase counter */
- if (si->ec_count) {
- do_div(si->ec_sum, si->ec_count);
- si->mean_ec = si->ec_sum;
- }
+ if (si->ec_count)
+ si->mean_ec = div_u64(si->ec_sum, si->ec_count);
if (si->is_empty)
ubi_msg("empty MTD device detected");
* @upd_marker: %1 if the update marker is set for this volume
* @updating: %1 if the volume is being updated
* @changing_leb: %1 if the atomic LEB change ioctl command is in progress
+ * @direct_writes: %1 if direct writes are enabled for this volume
*
* @gluebi_desc: gluebi UBI volume descriptor
* @gluebi_refcount: reference count of the gluebi MTD device
unsigned int upd_marker:1;
unsigned int updating:1;
unsigned int changing_leb:1;
+ unsigned int direct_writes:1;
#ifdef CONFIG_MTD_UBI_GLUEBI
/*
* @vtbl_size: size of the volume table in bytes
* @vtbl: in-RAM volume table copy
* @volumes_mutex: protects on-flash volume table and serializes volume
- * changes, like creation, deletion, update, re-size and re-name
+ * changes, like creation, deletion, update, re-size,
+ * re-name and set property
*
* @max_ec: current highest erase counter value
* @mean_ec: current mean erase counter value
};
extern struct kmem_cache *ubi_wl_entry_slab;
-extern struct file_operations ubi_ctrl_cdev_operations;
-extern struct file_operations ubi_cdev_operations;
-extern struct file_operations ubi_vol_cdev_operations;
+extern const struct file_operations ubi_ctrl_cdev_operations;
+extern const struct file_operations ubi_cdev_operations;
+extern const struct file_operations ubi_vol_cdev_operations;
extern struct class *ubi_class;
extern struct mutex ubi_devices_mutex;
#include <linux/err.h>
#include <linux/uaccess.h>
-#include <asm/div64.h>
+#include <linux/math64.h>
#include "ubi.h"
/**
long long bytes)
{
int err;
- uint64_t tmp;
struct ubi_vtbl_record vtbl_rec;
dbg_gen("clear update marker for volume %d", vol->vol_id);
if (vol->vol_type == UBI_STATIC_VOLUME) {
vol->corrupted = 0;
- vol->used_bytes = tmp = bytes;
- vol->last_eb_bytes = do_div(tmp, vol->usable_leb_size);
- vol->used_ebs = tmp;
+ vol->used_bytes = bytes;
+ vol->used_ebs = div_u64_rem(bytes, vol->usable_leb_size,
+ &vol->last_eb_bytes);
if (vol->last_eb_bytes)
vol->used_ebs += 1;
else
long long bytes)
{
int i, err;
- uint64_t tmp;
dbg_gen("start update of volume %d, %llu bytes", vol->vol_id, bytes);
ubi_assert(!vol->updating && !vol->changing_leb);
if (!vol->upd_buf)
return -ENOMEM;
- tmp = bytes;
- vol->upd_ebs = !!do_div(tmp, vol->usable_leb_size);
- vol->upd_ebs += tmp;
+ vol->upd_ebs = div_u64(bytes + vol->usable_leb_size - 1,
+ vol->usable_leb_size);
vol->upd_bytes = bytes;
vol->upd_received = 0;
return 0;
int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
const void __user *buf, int count)
{
- uint64_t tmp;
int lnum, offs, err = 0, len, to_write = count;
dbg_gen("write %d of %lld bytes, %lld already passed",
if (ubi->ro_mode)
return -EROFS;
- tmp = vol->upd_received;
- offs = do_div(tmp, vol->usable_leb_size);
- lnum = tmp;
-
+ lnum = div_u64_rem(vol->upd_received, vol->usable_leb_size, &offs);
if (vol->upd_received + count > vol->upd_bytes)
to_write = count = vol->upd_bytes - vol->upd_received;
*/
#include <linux/err.h>
-#include <asm/div64.h>
+#include <linux/math64.h>
#include "ubi.h"
#ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
int i, err, vol_id = req->vol_id, do_free = 1;
struct ubi_volume *vol;
struct ubi_vtbl_record vtbl_rec;
- uint64_t bytes;
dev_t dev;
if (ubi->ro_mode)
/* Calculate how many eraseblocks are requested */
vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;
- bytes = req->bytes;
- if (do_div(bytes, vol->usable_leb_size))
- vol->reserved_pebs = 1;
- vol->reserved_pebs += bytes;
+ vol->reserved_pebs += div_u64(req->bytes + vol->usable_leb_size - 1,
+ vol->usable_leb_size);
/* Reserve physical eraseblocks */
if (vol->reserved_pebs > ubi->avail_pebs) {
vol->used_bytes =
(long long)vol->used_ebs * vol->usable_leb_size;
} else {
- bytes = vol->used_bytes;
- vol->last_eb_bytes = do_div(bytes, vol->usable_leb_size);
- vol->used_ebs = bytes;
- if (vol->last_eb_bytes)
+ vol->used_ebs = div_u64_rem(vol->used_bytes,
+ vol->usable_leb_size,
+ &vol->last_eb_bytes);
+ if (vol->last_eb_bytes != 0)
vol->used_ebs += 1;
else
vol->last_eb_bytes = vol->usable_leb_size;
case KE_SW:
set_bit(EV_SW, hp_wmi_input_dev->evbit);
set_bit(key->keycode, hp_wmi_input_dev->swbit);
+
+ /* Set initial dock state */
+ input_report_switch(hp_wmi_input_dev, key->keycode,
+ hp_wmi_dock_state());
+ input_sync(hp_wmi_input_dev);
break;
}
}
bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
bluetooth_rfkill->user_claim_unsupported = 1;
err = rfkill_register(bluetooth_rfkill);
+ if (err)
goto register_bluetooth_error;
}
You need an utility program called fbset to make full use of frame
buffer devices. Please read <file:Documentation/fb/framebuffer.txt>
and the Framebuffer-HOWTO at
- <http://www.tahallah.demon.co.uk/programming/prog.html> for more
+ <http://www.munted.org.uk/programming/Framebuffer-HOWTO-1.2.html> for more
information.
Say Y here and to the driver for your graphics board below if you
/*
* Configuration options available inside /proc/sys/fs/epoll/
*/
-/* Maximum number of epoll devices, per user */
-static int max_user_instances __read_mostly;
/* Maximum number of epoll watched descriptors, per user */
static int max_user_watches __read_mostly;
static int zero;
ctl_table epoll_table[] = {
- {
- .procname = "max_user_instances",
- .data = &max_user_instances,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .extra1 = &zero,
- },
{
.procname = "max_user_watches",
.data = &max_user_watches,
mutex_unlock(&epmutex);
mutex_destroy(&ep->mtx);
- atomic_dec(&ep->user->epoll_devs);
free_uid(ep->user);
kfree(ep);
}
struct eventpoll *ep;
user = get_current_user();
- error = -EMFILE;
- if (unlikely(atomic_read(&user->epoll_devs) >=
- max_user_instances))
- goto free_uid;
error = -ENOMEM;
ep = kzalloc(sizeof(*ep), GFP_KERNEL);
if (unlikely(!ep))
flags & O_CLOEXEC);
if (fd < 0)
ep_free(ep);
- atomic_inc(&ep->user->epoll_devs);
error_return:
DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
struct sysinfo si;
si_meminfo(&si);
- max_user_instances = 128;
- max_user_watches = (((si.totalram - si.totalhigh) / 32) << PAGE_SHIFT) /
+ /*
+ * Allows top 4% of lomem to be allocated for epoll watches (per user).
+ */
+ max_user_watches = (((si.totalram - si.totalhigh) / 25) << PAGE_SHIFT) /
EP_ITEM_COST;
/* Initialize the structure used to perform safe poll wait head wake ups */
while (!atomic_inc_not_zero(&css->refcnt)) {
if (test_bit(CSS_REMOVED, &css->flags))
return false;
+ cpu_relax();
}
return true;
}
/* Attach to insert probes on any functions which should be ignored*/
#define __kprobes __attribute__((__section__(".kprobes.text"))) notrace
+#else /* CONFIG_KPROBES */
+typedef int kprobe_opcode_t;
+struct arch_specific_insn {
+ int dummy;
+};
+#define __kprobes notrace
+#endif /* CONFIG_KPROBES */
struct kprobe;
struct pt_regs;
/* For backward compatibility with old code using JPROBE_ENTRY() */
#define JPROBE_ENTRY(handler) (handler)
-DECLARE_PER_CPU(struct kprobe *, current_kprobe);
-DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
-
-#ifdef CONFIG_KRETPROBES
-extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
- struct pt_regs *regs);
-extern int arch_trampoline_kprobe(struct kprobe *p);
-#else /* CONFIG_KRETPROBES */
-static inline void arch_prepare_kretprobe(struct kretprobe *rp,
- struct pt_regs *regs)
-{
-}
-static inline int arch_trampoline_kprobe(struct kprobe *p)
-{
- return 0;
-}
-#endif /* CONFIG_KRETPROBES */
/*
* Function-return probe -
* Note:
unsigned long range;
};
+#ifdef CONFIG_KPROBES
+DECLARE_PER_CPU(struct kprobe *, current_kprobe);
+DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+#ifdef CONFIG_KRETPROBES
+extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
+ struct pt_regs *regs);
+extern int arch_trampoline_kprobe(struct kprobe *p);
+#else /* CONFIG_KRETPROBES */
+static inline void arch_prepare_kretprobe(struct kretprobe *rp,
+ struct pt_regs *regs)
+{
+}
+static inline int arch_trampoline_kprobe(struct kprobe *p)
+{
+ return 0;
+}
+#endif /* CONFIG_KRETPROBES */
+
extern struct kretprobe_blackpoint kretprobe_blacklist[];
static inline void kretprobe_assert(struct kretprobe_instance *ri,
#else /* CONFIG_KPROBES */
-#define __kprobes notrace
-struct jprobe;
-struct kretprobe;
-
static inline struct kprobe *get_kprobe(void *addr)
{
return NULL;
atomic_t inotify_devs; /* How many inotify devs does this user have opened? */
#endif
#ifdef CONFIG_EPOLL
- atomic_t epoll_devs; /* The number of epoll descriptors currently open */
atomic_t epoll_watches; /* The number of file descriptors currently watched */
#endif
#ifdef CONFIG_POSIX_MQUEUE
asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
"\t.globl ." #alias "\n\t.set ." #alias ", ." #name)
#else
+#ifdef CONFIG_ALPHA
+#define SYSCALL_ALIAS(alias, name) \
+ asm ( #alias " = " #name "\n\t.globl " #alias)
+#else
#define SYSCALL_ALIAS(alias, name) \
asm ("\t.globl " #alias "\n\t.set " #alias ", " #name)
#endif
+#endif
#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
* UBI volume creation
* ~~~~~~~~~~~~~~~~~~~
*
- * UBI volumes are created via the %UBI_IOCMKVOL IOCTL command of UBI character
+ * UBI volumes are created via the %UBI_IOCMKVOL ioctl command of UBI character
* device. A &struct ubi_mkvol_req object has to be properly filled and a
- * pointer to it has to be passed to the IOCTL.
+ * pointer to it has to be passed to the ioctl.
*
* UBI volume deletion
* ~~~~~~~~~~~~~~~~~~~
*
- * To delete a volume, the %UBI_IOCRMVOL IOCTL command of the UBI character
+ * To delete a volume, the %UBI_IOCRMVOL ioctl command of the UBI character
* device should be used. A pointer to the 32-bit volume ID hast to be passed
- * to the IOCTL.
+ * to the ioctl.
*
* UBI volume re-size
* ~~~~~~~~~~~~~~~~~~
*
- * To re-size a volume, the %UBI_IOCRSVOL IOCTL command of the UBI character
+ * To re-size a volume, the %UBI_IOCRSVOL ioctl command of the UBI character
* device should be used. A &struct ubi_rsvol_req object has to be properly
- * filled and a pointer to it has to be passed to the IOCTL.
+ * filled and a pointer to it has to be passed to the ioctl.
*
* UBI volumes re-name
* ~~~~~~~~~~~~~~~~~~~
*
* To re-name several volumes atomically at one go, the %UBI_IOCRNVOL command
* of the UBI character device should be used. A &struct ubi_rnvol_req object
- * has to be properly filled and a pointer to it has to be passed to the IOCTL.
+ * has to be properly filled and a pointer to it has to be passed to the ioctl.
*
* UBI volume update
* ~~~~~~~~~~~~~~~~~
*
- * Volume update should be done via the %UBI_IOCVOLUP IOCTL command of the
+ * Volume update should be done via the %UBI_IOCVOLUP ioctl command of the
* corresponding UBI volume character device. A pointer to a 64-bit update
- * size should be passed to the IOCTL. After this, UBI expects user to write
+ * size should be passed to the ioctl. After this, UBI expects user to write
* this number of bytes to the volume character device. The update is finished
* when the claimed number of bytes is passed. So, the volume update sequence
* is something like:
* write(fd, buf, image_size);
* close(fd);
*
- * Atomic eraseblock change
+ * Logical eraseblock erase
* ~~~~~~~~~~~~~~~~~~~~~~~~
*
- * Atomic eraseblock change operation is done via the %UBI_IOCEBCH IOCTL
- * command of the corresponding UBI volume character device. A pointer to
- * &struct ubi_leb_change_req has to be passed to the IOCTL. Then the user is
- * expected to write the requested amount of bytes. This is similar to the
- * "volume update" IOCTL.
+ * To erase a logical eraseblock, the %UBI_IOCEBER ioctl command of the
+ * corresponding UBI volume character device should be used. This command
+ * unmaps the requested logical eraseblock, makes sure the corresponding
+ * physical eraseblock is successfully erased, and returns.
+ *
+ * Atomic logical eraseblock change
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * Atomic logical eraseblock change operation is called using the %UBI_IOCEBCH
+ * ioctl command of the corresponding UBI volume character device. A pointer to
+ * a &struct ubi_leb_change_req object has to be passed to the ioctl. Then the
+ * user is expected to write the requested amount of bytes (similarly to what
+ * should be done in case of the "volume update" ioctl).
+ *
+ * Logical eraseblock map
+ * ~~~~~~~~~~~~~~~~~~~~~
+ *
+ * To map a logical eraseblock to a physical eraseblock, the %UBI_IOCEBMAP
+ * ioctl command should be used. A pointer to a &struct ubi_map_req object is
+ * expected to be passed. The ioctl maps the requested logical eraseblock to
+ * a physical eraseblock and returns. Only non-mapped logical eraseblocks can
+ * be mapped. If the logical eraseblock specified in the request is already
+ * mapped to a physical eraseblock, the ioctl fails and returns error.
+ *
+ * Logical eraseblock unmap
+ * ~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * To unmap a logical eraseblock to a physical eraseblock, the %UBI_IOCEBUNMAP
+ * ioctl command should be used. The ioctl unmaps the logical eraseblocks,
+ * schedules corresponding physical eraseblock for erasure, and returns. Unlike
+ * the "LEB erase" command, it does not wait for the physical eraseblock being
+ * erased. Note, the side effect of this is that if an unclean reboot happens
+ * after the unmap ioctl returns, you may find the LEB mapped again to the same
+ * physical eraseblock after the UBI is run again.
+ *
+ * Check if logical eraseblock is mapped
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * To check if a logical eraseblock is mapped to a physical eraseblock, the
+ * %UBI_IOCEBISMAP ioctl command should be used. It returns %0 if the LEB is
+ * not mapped, and %1 if it is mapped.
+ *
+ * Set an UBI volume property
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * To set an UBI volume property the %UBI_IOCSETPROP ioctl command should be
+ * used. A pointer to a &struct ubi_set_prop_req object is expected to be
+ * passed. The object describes which property should be set, and to which value
+ * it should be set.
*/
/*
/* Maximum volume name length */
#define UBI_MAX_VOLUME_NAME 127
-/* IOCTL commands of UBI character devices */
+/* ioctl commands of UBI character devices */
#define UBI_IOC_MAGIC 'o'
/* Re-name volumes */
#define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req)
-/* IOCTL commands of the UBI control character device */
+/* ioctl commands of the UBI control character device */
#define UBI_CTRL_IOC_MAGIC 'o'
/* Detach an MTD device */
#define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, int32_t)
-/* IOCTL commands of UBI volume character devices */
+/* ioctl commands of UBI volume character devices */
#define UBI_VOL_IOC_MAGIC 'O'
/* Start UBI volume update */
#define UBI_IOCVOLUP _IOW(UBI_VOL_IOC_MAGIC, 0, int64_t)
-/* An eraseblock erasure command, used for debugging, disabled by default */
+/* LEB erasure command, used for debugging, disabled by default */
#define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t)
-/* An atomic eraseblock change command */
+/* Atomic LEB change command */
#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t)
+/* Map LEB command */
+#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req)
+/* Unmap LEB command */
+#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t)
+/* Check if LEB is mapped command */
+#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t)
+/* Set an UBI volume property */
+#define UBI_IOCSETPROP _IOW(UBI_VOL_IOC_MAGIC, 6, struct ubi_set_prop_req)
/* Maximum MTD device name length supported by UBI */
#define MAX_UBI_MTD_NAME_LEN 127
UBI_STATIC_VOLUME = 4,
};
+/*
+ * UBI set property ioctl constants
+ *
+ * @UBI_PROP_DIRECT_WRITE: allow / disallow user to directly write and
+ * erase individual eraseblocks on dynamic volumes
+ */
+enum {
+ UBI_PROP_DIRECT_WRITE = 1,
+};
+
/**
* struct ubi_attach_req - attach MTD device request.
* @ubi_num: UBI device number to create
} __attribute__ ((packed));
/**
- * struct ubi_leb_change_req - a data structure used in atomic logical
- * eraseblock change requests.
+ * struct ubi_leb_change_req - a data structure used in atomic LEB change
+ * requests.
* @lnum: logical eraseblock number to change
* @bytes: how many bytes will be written to the logical eraseblock
* @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
int8_t padding[7];
} __attribute__ ((packed));
+/**
+ * struct ubi_map_req - a data structure used in map LEB requests.
+ * @lnum: logical eraseblock number to unmap
+ * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
+ * @padding: reserved for future, not used, has to be zeroed
+ */
+struct ubi_map_req {
+ int32_t lnum;
+ int8_t dtype;
+ int8_t padding[3];
+} __attribute__ ((packed));
+
+
+/**
+ * struct ubi_set_prop_req - a data structure used to set an ubi volume
+ * property.
+ * @property: property to set (%UBI_PROP_DIRECT_WRITE)
+ * @padding: reserved for future, not used, has to be zeroed
+ * @value: value to set
+ */
+struct ubi_set_prop_req {
+ uint8_t property;
+ uint8_t padding[7];
+ uint64_t value;
+} __attribute__ ((packed));
+
#endif /* __UBI_USER_H__ */
}
write_unlock(&css_set_lock);
- list_del(&root->root_list);
- root_count--;
+ if (!list_empty(&root->root_list)) {
+ list_del(&root->root_list);
+ root_count--;
+ }
mutex_unlock(&cgroup_mutex);
err_remove:
+ cgroup_lock_hierarchy(root);
list_del(&cgrp->sibling);
+ cgroup_unlock_hierarchy(root);
root->number_of_cgroups--;
err_destroy:
for_each_subsys(cgrp->root, ss) {
struct cgroup_subsys_state *css = cgrp->subsys[ss->subsys_id];
int refcnt;
- do {
+ while (1) {
/* We can only remove a CSS with a refcnt==1 */
refcnt = atomic_read(&css->refcnt);
if (refcnt > 1) {
* css_tryget() to spin until we set the
* CSS_REMOVED bits or abort
*/
- } while (atomic_cmpxchg(&css->refcnt, refcnt, 0) != refcnt);
+ if (atomic_cmpxchg(&css->refcnt, refcnt, 0) == refcnt)
+ break;
+ cpu_relax();
+ }
}
done:
for_each_subsys(cgrp->root, ss) {
mutex_unlock(&cgroup_mutex);
return 0;
}
- task_lock(tsk);
- cg = tsk->cgroups;
- parent = task_cgroup(tsk, subsys->subsys_id);
/* Pin the hierarchy */
- if (!atomic_inc_not_zero(&parent->root->sb->s_active)) {
+ if (!atomic_inc_not_zero(&root->sb->s_active)) {
/* We race with the final deactivate_super() */
mutex_unlock(&cgroup_mutex);
return 0;
}
/* Keep the cgroup alive */
+ task_lock(tsk);
+ parent = task_cgroup(tsk, subsys->subsys_id);
+ cg = tsk->cgroups;
get_css_set(cg);
task_unlock(tsk);
+
mutex_unlock(&cgroup_mutex);
/* Now do the VFS work to create a cgroup */
mutex_unlock(&inode->i_mutex);
put_css_set(cg);
- deactivate_super(parent->root->sb);
+ deactivate_super(root->sb);
/* The cgroup is still accessible in the VFS, but
* we're not going to try to rmdir() it at this
* point. */
mutex_lock(&cgroup_mutex);
put_css_set(cg);
mutex_unlock(&cgroup_mutex);
- deactivate_super(parent->root->sb);
+ deactivate_super(root->sb);
return ret;
}
static void mem_cgroup_get(struct mem_cgroup *mem);
static void mem_cgroup_put(struct mem_cgroup *mem);
+static struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *mem);
static void mem_cgroup_charge_statistics(struct mem_cgroup *mem,
struct page_cgroup *pc,
/* This is for making all *used* pages to be on LRU. */
lru_add_drain_all();
ret = 0;
- for_each_node_state(node, N_POSSIBLE) {
+ for_each_node_state(node, N_HIGH_MEMORY) {
for (zid = 0; !ret && zid < MAX_NR_ZONES; zid++) {
enum lru_list l;
for_each_lru(l) {
static void mem_cgroup_put(struct mem_cgroup *mem)
{
- if (atomic_dec_and_test(&mem->refcnt))
+ if (atomic_dec_and_test(&mem->refcnt)) {
+ struct mem_cgroup *parent = parent_mem_cgroup(mem);
__mem_cgroup_free(mem);
+ if (parent)
+ mem_cgroup_put(parent);
+ }
}
+/*
+ * Returns the parent mem_cgroup in memcgroup hierarchy with hierarchy enabled.
+ */
+static struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *mem)
+{
+ if (!mem->res.parent)
+ return NULL;
+ return mem_cgroup_from_res_counter(mem->res.parent, res);
+}
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
static void __init enable_swap_cgroup(void)
if (parent && parent->use_hierarchy) {
res_counter_init(&mem->res, &parent->res);
res_counter_init(&mem->memsw, &parent->memsw);
+ /*
+ * We increment refcnt of the parent to ensure that we can
+ * safely access it on res_counter_charge/uncharge.
+ * This refcnt will be decremented when freeing this
+ * mem_cgroup(see mem_cgroup_put).
+ */
+ mem_cgroup_get(parent);
} else {
res_counter_init(&mem->res, NULL);
res_counter_init(&mem->memsw, NULL);
}
/*
- * Can we just expand an old private anonymous mapping?
- * The VM_SHARED test is necessary because shmem_zero_setup
- * will create the file object for a shared anonymous map below.
+ * Can we just expand an old mapping?
*/
- if (!file && !(vm_flags & VM_SHARED)) {
- vma = vma_merge(mm, prev, addr, addr + len, vm_flags,
- NULL, NULL, pgoff, NULL);
- if (vma)
- goto out;
- }
+ vma = vma_merge(mm, prev, addr, addr + len, vm_flags, NULL, file, pgoff, NULL);
+ if (vma)
+ goto out;
/*
* Determine the object being mapped and call the appropriate
if (vma_wants_writenotify(vma))
vma->vm_page_prot = vm_get_page_prot(vm_flags & ~VM_SHARED);
- if (file && vma_merge(mm, prev, addr, vma->vm_end,
- vma->vm_flags, NULL, file, pgoff, vma_policy(vma))) {
- mpol_put(vma_policy(vma));
- kmem_cache_free(vm_area_cachep, vma);
- fput(file);
- if (vm_flags & VM_EXECUTABLE)
- removed_exe_file_vma(mm);
- } else {
- vma_link(mm, vma, prev, rb_link, rb_parent);
- file = vma->vm_file;
- }
+ vma_link(mm, vma, prev, rb_link, rb_parent);
+ file = vma->vm_file;
/* Once vma denies write, undo our temporary denial count */
if (correct_wcount)
pte_t *pte;
int ret = 1;
- if (mem_cgroup_try_charge_swapin(vma->vm_mm, page, GFP_KERNEL, &ptr))
+ if (mem_cgroup_try_charge_swapin(vma->vm_mm, page, GFP_KERNEL, &ptr)) {
ret = -ENOMEM;
+ goto out_nolock;
+ }
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
if (unlikely(!pte_same(*pte, swp_entry_to_pte(entry)))) {
activate_page(page);
out:
pte_unmap_unlock(pte, ptl);
+out_nolock:
return ret;
}
&spec->cur_mux[adc_idx]);
}
+#ifdef CONFIG_SND_JACK
static int conexant_add_jack(struct hda_codec *codec,
hda_nid_t nid, int type)
{
static int conexant_init_jacks(struct hda_codec *codec)
{
-#ifdef CONFIG_SND_JACK
struct conexant_spec *spec = codec->spec;
int i;
++hv;
}
}
-#endif
return 0;
}
+#else
+static inline void conexant_report_jack(struct hda_codec *codec, hda_nid_t nid)
+{
+}
+
+static inline int conexant_init_jacks(struct hda_codec *codec)
+{
+ return 0;
+}
+#endif
static int conexant_init(struct hda_codec *codec)
{
SND_PCI_QUIRK(0x103c, 0x30a5, "HP DV5200T/DV8000T", CXT5047_LAPTOP_HP),
SND_PCI_QUIRK(0x103c, 0x30b2, "HP DV2000T/DV3000T", CXT5047_LAPTOP),
SND_PCI_QUIRK(0x103c, 0x30b5, "HP DV2000Z", CXT5047_LAPTOP),
+ SND_PCI_QUIRK(0x103c, 0x30cf, "HP DV6700", CXT5047_LAPTOP),
SND_PCI_QUIRK(0x1179, 0xff31, "Toshiba P100", CXT5047_LAPTOP_EAPD),
{}
};
case 0x106b00a4: /* MacbookPro4,1 */
case 0x106b2c00: /* Macbook Pro rev3 */
case 0x106b3600: /* Macbook 3.1 */
+ case 0x106b3800: /* MacbookPro4,1 - latter revision */
board_config = ALC885_MBP3;
break;
default:
info->name = "STAC92xx Analog";
info->stream[SNDRV_PCM_STREAM_PLAYBACK] = stac92xx_pcm_analog_playback;
+ info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid =
+ spec->multiout.dac_nids[0];
info->stream[SNDRV_PCM_STREAM_CAPTURE] = stac92xx_pcm_analog_capture;
info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->adc_nids[0];
info->stream[SNDRV_PCM_STREAM_CAPTURE].substreams = spec->num_adcs;
},
};
-struct snd_soc_dai wm8753_dai[2];
+struct snd_soc_dai wm8753_dai[] = {
+ {
+ .name = "WM8753 DAI 0",
+ },
+ {
+ .name = "WM8753 DAI 1",
+ },
+};
EXPORT_SYMBOL_GPL(wm8753_dai);
static void wm8753_set_dai_mode(struct snd_soc_codec *codec, unsigned int mode)
regs->spcr1 |= RINTM(3);
regs->rcr2 |= RFIG;
regs->xcr2 |= XFIG;
+ if (cpu_is_omap2430() || cpu_is_omap34xx()) {
+ regs->xccr = DXENDLY(1) | XDMAEN;
+ regs->rccr = RFULL_CYCLE | RDMAEN;
+ }
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
projects / deliverable / linux.git / commitdiff
