F: drivers/cpufreq/omap-cpufreq.c
OMAP POWERDOMAIN SOC ADAPTATION LAYER SUPPORT
-M: Rajendra Nayak <rnayak@ti.com>
+M: Rajendra Nayak <rnayak@codeaurora.org>
M: Paul Walmsley <paul@pwsan.com>
L: linux-omap@vger.kernel.org
S: Maintained
kvm_pfn_t pfn = *pfnp;
gfn_t gfn = *ipap >> PAGE_SHIFT;
- if (PageTransCompound(pfn_to_page(pfn))) {
+ if (PageTransCompoundMap(pfn_to_page(pfn))) {
unsigned long mask;
/*
* The address we faulted on is backed by a transparent huge
*/
if (!is_error_noslot_pfn(pfn) && !kvm_is_reserved_pfn(pfn) &&
level == PT_PAGE_TABLE_LEVEL &&
- PageTransCompound(pfn_to_page(pfn)) &&
+ PageTransCompoundMap(pfn_to_page(pfn)) &&
!mmu_gfn_lpage_is_disallowed(vcpu, gfn, PT_DIRECTORY_LEVEL)) {
unsigned long mask;
/*
*/
if (sp->role.direct &&
!kvm_is_reserved_pfn(pfn) &&
- PageTransCompound(pfn_to_page(pfn))) {
+ PageTransCompoundMap(pfn_to_page(pfn))) {
drop_spte(kvm, sptep);
need_tlb_flush = 1;
goto restart;
struct list_head node;
struct mport_dev *md;
enum rio_mport_map_dir dir;
- u32 rioid;
+ u16 rioid;
u64 rio_addr;
dma_addr_t phys_addr; /* for mmap */
void *virt_addr; /* kernel address, for dma_free_coherent */
struct rio_mport_dma_map {
int valid;
- uint64_t length;
+ u64 length;
void *vaddr;
dma_addr_t paddr;
};
struct kfifo event_fifo;
wait_queue_head_t event_rx_wait;
spinlock_t fifo_lock;
- unsigned int event_mask; /* RIO_DOORBELL, RIO_PORTWRITE */
+ u32 event_mask; /* RIO_DOORBELL, RIO_PORTWRITE */
#ifdef CONFIG_RAPIDIO_DMA_ENGINE
struct dma_chan *dmach;
struct list_head async_list;
return -EFAULT;
if ((maint_io.offset % 4) ||
- (maint_io.length == 0) || (maint_io.length % 4))
+ (maint_io.length == 0) || (maint_io.length % 4) ||
+ (maint_io.length + maint_io.offset) > RIO_MAINT_SPACE_SZ)
return -EINVAL;
buffer = vmalloc(maint_io.length);
offset += 4;
}
- if (unlikely(copy_to_user(maint_io.buffer, buffer, maint_io.length)))
+ if (unlikely(copy_to_user((void __user *)(uintptr_t)maint_io.buffer,
+ buffer, maint_io.length)))
ret = -EFAULT;
out:
vfree(buffer);
return -EFAULT;
if ((maint_io.offset % 4) ||
- (maint_io.length == 0) || (maint_io.length % 4))
+ (maint_io.length == 0) || (maint_io.length % 4) ||
+ (maint_io.length + maint_io.offset) > RIO_MAINT_SPACE_SZ)
return -EINVAL;
buffer = vmalloc(maint_io.length);
return -ENOMEM;
length = maint_io.length;
- if (unlikely(copy_from_user(buffer, maint_io.buffer, length))) {
+ if (unlikely(copy_from_user(buffer,
+ (void __user *)(uintptr_t)maint_io.buffer, length))) {
ret = -EFAULT;
goto out;
}
*/
static int
rio_mport_create_outbound_mapping(struct mport_dev *md, struct file *filp,
- u32 rioid, u64 raddr, u32 size,
+ u16 rioid, u64 raddr, u32 size,
dma_addr_t *paddr)
{
struct rio_mport *mport = md->mport;
rmcd_debug(OBW, "did=%d ra=0x%llx sz=0x%x", rioid, raddr, size);
- map = kzalloc(sizeof(struct rio_mport_mapping), GFP_KERNEL);
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
if (map == NULL)
return -ENOMEM;
static int
rio_mport_get_outbound_mapping(struct mport_dev *md, struct file *filp,
- u32 rioid, u64 raddr, u32 size,
+ u16 rioid, u64 raddr, u32 size,
dma_addr_t *paddr)
{
struct rio_mport_mapping *map;
dma_addr_t paddr;
int ret;
- if (unlikely(copy_from_user(&map, arg, sizeof(struct rio_mmap))))
+ if (unlikely(copy_from_user(&map, arg, sizeof(map))))
return -EFAULT;
rmcd_debug(OBW, "did=%d ra=0x%llx sz=0x%llx",
map.handle = paddr;
- if (unlikely(copy_to_user(arg, &map, sizeof(struct rio_mmap))))
+ if (unlikely(copy_to_user(arg, &map, sizeof(map))))
return -EFAULT;
return 0;
}
if (!md->mport->ops->unmap_outb)
return -EPROTONOSUPPORT;
- if (copy_from_user(&handle, arg, sizeof(u64)))
+ if (copy_from_user(&handle, arg, sizeof(handle)))
return -EFAULT;
rmcd_debug(OBW, "h=0x%llx", handle);
static int maint_hdid_set(struct mport_cdev_priv *priv, void __user *arg)
{
struct mport_dev *md = priv->md;
- uint16_t hdid;
+ u16 hdid;
- if (copy_from_user(&hdid, arg, sizeof(uint16_t)))
+ if (copy_from_user(&hdid, arg, sizeof(hdid)))
return -EFAULT;
md->mport->host_deviceid = hdid;
static int maint_comptag_set(struct mport_cdev_priv *priv, void __user *arg)
{
struct mport_dev *md = priv->md;
- uint32_t comptag;
+ u32 comptag;
- if (copy_from_user(&comptag, arg, sizeof(uint32_t)))
+ if (copy_from_user(&comptag, arg, sizeof(comptag)))
return -EFAULT;
rio_local_write_config_32(md->mport, RIO_COMPONENT_TAG_CSR, comptag);
* @xfer: data transfer descriptor structure
*/
static int
-rio_dma_transfer(struct file *filp, uint32_t transfer_mode,
+rio_dma_transfer(struct file *filp, u32 transfer_mode,
enum rio_transfer_sync sync, enum dma_data_direction dir,
struct rio_transfer_io *xfer)
{
unsigned long offset;
long pinned;
- offset = (unsigned long)xfer->loc_addr & ~PAGE_MASK;
+ offset = (unsigned long)(uintptr_t)xfer->loc_addr & ~PAGE_MASK;
nr_pages = PAGE_ALIGN(xfer->length + offset) >> PAGE_SHIFT;
page_list = kmalloc_array(nr_pages,
if (unlikely(copy_from_user(&transaction, arg, sizeof(transaction))))
return -EFAULT;
- if (transaction.count != 1)
+ if (transaction.count != 1) /* only single transfer for now */
return -EINVAL;
if ((transaction.transfer_mode &
priv->md->properties.transfer_mode) == 0)
return -ENODEV;
- transfer = vmalloc(transaction.count * sizeof(struct rio_transfer_io));
+ transfer = vmalloc(transaction.count * sizeof(*transfer));
if (!transfer)
return -ENOMEM;
- if (unlikely(copy_from_user(transfer, transaction.block,
- transaction.count * sizeof(struct rio_transfer_io)))) {
+ if (unlikely(copy_from_user(transfer,
+ (void __user *)(uintptr_t)transaction.block,
+ transaction.count * sizeof(*transfer)))) {
ret = -EFAULT;
goto out_free;
}
ret = rio_dma_transfer(filp, transaction.transfer_mode,
transaction.sync, dir, &transfer[i]);
- if (unlikely(copy_to_user(transaction.block, transfer,
- transaction.count * sizeof(struct rio_transfer_io))))
+ if (unlikely(copy_to_user((void __user *)(uintptr_t)transaction.block,
+ transfer,
+ transaction.count * sizeof(*transfer))))
ret = -EFAULT;
out_free:
}
static int rio_mport_create_dma_mapping(struct mport_dev *md, struct file *filp,
- uint64_t size, struct rio_mport_mapping **mapping)
+ u64 size, struct rio_mport_mapping **mapping)
{
struct rio_mport_mapping *map;
- map = kzalloc(sizeof(struct rio_mport_mapping), GFP_KERNEL);
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
if (map == NULL)
return -ENOMEM;
struct rio_mport_mapping *mapping = NULL;
int ret;
- if (unlikely(copy_from_user(&map, arg, sizeof(struct rio_dma_mem))))
+ if (unlikely(copy_from_user(&map, arg, sizeof(map))))
return -EFAULT;
ret = rio_mport_create_dma_mapping(md, filp, map.length, &mapping);
map.dma_handle = mapping->phys_addr;
- if (unlikely(copy_to_user(arg, &map, sizeof(struct rio_dma_mem)))) {
+ if (unlikely(copy_to_user(arg, &map, sizeof(map)))) {
mutex_lock(&md->buf_mutex);
kref_put(&mapping->ref, mport_release_mapping);
mutex_unlock(&md->buf_mutex);
int ret = -EFAULT;
struct rio_mport_mapping *map, *_map;
- if (copy_from_user(&handle, arg, sizeof(u64)))
+ if (copy_from_user(&handle, arg, sizeof(handle)))
return -EFAULT;
rmcd_debug(EXIT, "filp=%p", filp);
static int
rio_mport_create_inbound_mapping(struct mport_dev *md, struct file *filp,
- u64 raddr, u32 size,
+ u64 raddr, u64 size,
struct rio_mport_mapping **mapping)
{
struct rio_mport *mport = md->mport;
struct rio_mport_mapping *map;
int ret;
- map = kzalloc(sizeof(struct rio_mport_mapping), GFP_KERNEL);
+ /* rio_map_inb_region() accepts u32 size */
+ if (size > 0xffffffff)
+ return -EINVAL;
+
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
if (map == NULL)
return -ENOMEM;
if (raddr == RIO_MAP_ANY_ADDR)
raddr = map->phys_addr;
- ret = rio_map_inb_region(mport, map->phys_addr, raddr, size, 0);
+ ret = rio_map_inb_region(mport, map->phys_addr, raddr, (u32)size, 0);
if (ret < 0)
goto err_map_inb;
static int
rio_mport_get_inbound_mapping(struct mport_dev *md, struct file *filp,
- u64 raddr, u32 size,
+ u64 raddr, u64 size,
struct rio_mport_mapping **mapping)
{
struct rio_mport_mapping *map;
if (!md->mport->ops->map_inb)
return -EPROTONOSUPPORT;
- if (unlikely(copy_from_user(&map, arg, sizeof(struct rio_mmap))))
+ if (unlikely(copy_from_user(&map, arg, sizeof(map))))
return -EFAULT;
rmcd_debug(IBW, "%s filp=%p", dev_name(&priv->md->dev), filp);
map.handle = mapping->phys_addr;
map.rio_addr = mapping->rio_addr;
- if (unlikely(copy_to_user(arg, &map, sizeof(struct rio_mmap)))) {
+ if (unlikely(copy_to_user(arg, &map, sizeof(map)))) {
/* Delete mapping if it was created by this request */
if (ret == 0 && mapping->filp == filp) {
mutex_lock(&md->buf_mutex);
if (!md->mport->ops->unmap_inb)
return -EPROTONOSUPPORT;
- if (copy_from_user(&handle, arg, sizeof(u64)))
+ if (copy_from_user(&handle, arg, sizeof(handle)))
return -EFAULT;
mutex_lock(&md->buf_mutex);
static int maint_port_idx_get(struct mport_cdev_priv *priv, void __user *arg)
{
struct mport_dev *md = priv->md;
- uint32_t port_idx = md->mport->index;
+ u32 port_idx = md->mport->index;
rmcd_debug(MPORT, "port_index=%d", port_idx);
handled = 0;
spin_lock(&data->db_lock);
list_for_each_entry(db_filter, &data->doorbells, data_node) {
- if (((db_filter->filter.rioid == 0xffffffff ||
+ if (((db_filter->filter.rioid == RIO_INVALID_DESTID ||
db_filter->filter.rioid == src)) &&
info >= db_filter->filter.low &&
info <= db_filter->filter.high) {
if (copy_from_user(&filter, arg, sizeof(filter)))
return -EFAULT;
+ if (filter.low > filter.high)
+ return -EINVAL;
+
spin_lock_irqsave(&priv->md->db_lock, flags);
list_for_each_entry(db_filter, &priv->db_filters, priv_node) {
if (db_filter->filter.rioid == filter.rioid &&
return -EEXIST;
}
- size = sizeof(struct rio_dev);
+ size = sizeof(*rdev);
mport = md->mport;
- destid = (u16)dev_info.destid;
- hopcount = (u8)dev_info.hopcount;
+ destid = dev_info.destid;
+ hopcount = dev_info.hopcount;
if (rio_mport_read_config_32(mport, destid, hopcount,
RIO_PEF_CAR, &rval))
do {
rdev = rio_get_comptag(dev_info.comptag, rdev);
if (rdev && rdev->dev.parent == &mport->net->dev &&
- rdev->destid == (u16)dev_info.destid &&
- rdev->hopcount == (u8)dev_info.hopcount)
+ rdev->destid == dev_info.destid &&
+ rdev->hopcount == dev_info.hopcount)
break;
} while (rdev);
}
return maint_port_idx_get(data, (void __user *)arg);
case RIO_MPORT_GET_PROPERTIES:
md->properties.hdid = md->mport->host_deviceid;
- if (copy_to_user((void __user *)arg, &(data->md->properties),
- sizeof(data->md->properties)))
+ if (copy_to_user((void __user *)arg, &(md->properties),
+ sizeof(md->properties)))
return -EFAULT;
return 0;
case RIO_ENABLE_DOORBELL_RANGE:
case RIO_DISABLE_PORTWRITE_RANGE:
return rio_mport_remove_pw_filter(data, (void __user *)arg);
case RIO_SET_EVENT_MASK:
- data->event_mask = arg;
+ data->event_mask = (u32)arg;
return 0;
case RIO_GET_EVENT_MASK:
if (copy_to_user((void __user *)arg, &data->event_mask,
- sizeof(data->event_mask)))
+ sizeof(u32)))
return -EFAULT;
return 0;
case RIO_MAP_OUTBOUND:
return -EINVAL;
ret = rio_mport_send_doorbell(mport,
- (u16)event.u.doorbell.rioid,
+ event.u.doorbell.rioid,
event.u.doorbell.payload);
if (ret < 0)
return ret;
struct mport_dev *md;
struct rio_mport_attr attr;
- md = kzalloc(sizeof(struct mport_dev), GFP_KERNEL);
+ md = kzalloc(sizeof(*md), GFP_KERNEL);
if (!md) {
rmcd_error("Unable allocate a device object");
return NULL;
/* The transfer_mode property will be returned through mport query
* interface
*/
-#ifdef CONFIG_PPC /* for now: only on Freescale's SoCs */
+#ifdef CONFIG_FSL_RIO /* for now: only on Freescale's SoCs */
md->properties.transfer_mode |= RIO_TRANSFER_MODE_MAPPED;
#else
md->properties.transfer_mode |= RIO_TRANSFER_MODE_TRANSFER;
struct mm_struct *mm = file->private_data;
unsigned long env_start, env_end;
- if (!mm)
+ /* Ensure the process spawned far enough to have an environment. */
+ if (!mm || !mm->env_end)
return 0;
page = (char *)__get_free_page(GFP_TEMPORARY);
return PageCompound(page);
}
+/*
+ * PageTransCompoundMap is the same as PageTransCompound, but it also
+ * guarantees the primary MMU has the entire compound page mapped
+ * through pmd_trans_huge, which in turn guarantees the secondary MMUs
+ * can also map the entire compound page. This allows the secondary
+ * MMUs to call get_user_pages() only once for each compound page and
+ * to immediately map the entire compound page with a single secondary
+ * MMU fault. If there will be a pmd split later, the secondary MMUs
+ * will get an update through the MMU notifier invalidation through
+ * split_huge_pmd().
+ *
+ * Unlike PageTransCompound, this is safe to be called only while
+ * split_huge_pmd() cannot run from under us, like if protected by the
+ * MMU notifier, otherwise it may result in page->_mapcount < 0 false
+ * positives.
+ */
+static inline int PageTransCompoundMap(struct page *page)
+{
+ return PageTransCompound(page) && atomic_read(&page->_mapcount) < 0;
+}
+
/*
* PageTransTail returns true for both transparent huge pages
* and hugetlbfs pages, so it should only be called when it's known
#else
TESTPAGEFLAG_FALSE(TransHuge)
TESTPAGEFLAG_FALSE(TransCompound)
+TESTPAGEFLAG_FALSE(TransCompoundMap)
TESTPAGEFLAG_FALSE(TransTail)
TESTPAGEFLAG_FALSE(DoubleMap)
TESTSETFLAG_FALSE(DoubleMap)
+++ /dev/null
-/*
- * Copyright (c) 2015-2016, Integrated Device Technology Inc.
- * Copyright (c) 2015, Prodrive Technologies
- * Copyright (c) 2015, Texas Instruments Incorporated
- * Copyright (c) 2015, RapidIO Trade Association
- * All rights reserved.
- *
- * This software is available to you under a choice of one of two licenses.
- * You may choose to be licensed under the terms of the GNU General Public
- * License(GPL) Version 2, or the BSD-3 Clause license below:
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors
- * may be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _RIO_MPORT_CDEV_H_
-#define _RIO_MPORT_CDEV_H_
-
-#ifndef __user
-#define __user
-#endif
-
-struct rio_mport_maint_io {
- uint32_t rioid; /* destID of remote device */
- uint32_t hopcount; /* hopcount to remote device */
- uint32_t offset; /* offset in register space */
- size_t length; /* length in bytes */
- void __user *buffer; /* data buffer */
-};
-
-/*
- * Definitions for RapidIO data transfers:
- * - memory mapped (MAPPED)
- * - packet generation from memory (TRANSFER)
- */
-#define RIO_TRANSFER_MODE_MAPPED (1 << 0)
-#define RIO_TRANSFER_MODE_TRANSFER (1 << 1)
-#define RIO_CAP_DBL_SEND (1 << 2)
-#define RIO_CAP_DBL_RECV (1 << 3)
-#define RIO_CAP_PW_SEND (1 << 4)
-#define RIO_CAP_PW_RECV (1 << 5)
-#define RIO_CAP_MAP_OUTB (1 << 6)
-#define RIO_CAP_MAP_INB (1 << 7)
-
-struct rio_mport_properties {
- uint16_t hdid;
- uint8_t id; /* Physical port ID */
- uint8_t index;
- uint32_t flags;
- uint32_t sys_size; /* Default addressing size */
- uint8_t port_ok;
- uint8_t link_speed;
- uint8_t link_width;
- uint32_t dma_max_sge;
- uint32_t dma_max_size;
- uint32_t dma_align;
- uint32_t transfer_mode; /* Default transfer mode */
- uint32_t cap_sys_size; /* Capable system sizes */
- uint32_t cap_addr_size; /* Capable addressing sizes */
- uint32_t cap_transfer_mode; /* Capable transfer modes */
- uint32_t cap_mport; /* Mport capabilities */
-};
-
-/*
- * Definitions for RapidIO events;
- * - incoming port-writes
- * - incoming doorbells
- */
-#define RIO_DOORBELL (1 << 0)
-#define RIO_PORTWRITE (1 << 1)
-
-struct rio_doorbell {
- uint32_t rioid;
- uint16_t payload;
-};
-
-struct rio_doorbell_filter {
- uint32_t rioid; /* 0xffffffff to match all ids */
- uint16_t low;
- uint16_t high;
-};
-
-
-struct rio_portwrite {
- uint32_t payload[16];
-};
-
-struct rio_pw_filter {
- uint32_t mask;
- uint32_t low;
- uint32_t high;
-};
-
-/* RapidIO base address for inbound requests set to value defined below
- * indicates that no specific RIO-to-local address translation is requested
- * and driver should use direct (one-to-one) address mapping.
-*/
-#define RIO_MAP_ANY_ADDR (uint64_t)(~((uint64_t) 0))
-
-struct rio_mmap {
- uint32_t rioid;
- uint64_t rio_addr;
- uint64_t length;
- uint64_t handle;
- void *address;
-};
-
-struct rio_dma_mem {
- uint64_t length; /* length of DMA memory */
- uint64_t dma_handle; /* handle associated with this memory */
- void *buffer; /* pointer to this memory */
-};
-
-
-struct rio_event {
- unsigned int header; /* event type RIO_DOORBELL or RIO_PORTWRITE */
- union {
- struct rio_doorbell doorbell; /* header for RIO_DOORBELL */
- struct rio_portwrite portwrite; /* header for RIO_PORTWRITE */
- } u;
-};
-
-enum rio_transfer_sync {
- RIO_TRANSFER_SYNC, /* synchronous transfer */
- RIO_TRANSFER_ASYNC, /* asynchronous transfer */
- RIO_TRANSFER_FAF, /* fire-and-forget transfer */
-};
-
-enum rio_transfer_dir {
- RIO_TRANSFER_DIR_READ, /* Read operation */
- RIO_TRANSFER_DIR_WRITE, /* Write operation */
-};
-
-/*
- * RapidIO data exchange transactions are lists of individual transfers. Each
- * transfer exchanges data between two RapidIO devices by remote direct memory
- * access and has its own completion code.
- *
- * The RapidIO specification defines four types of data exchange requests:
- * NREAD, NWRITE, SWRITE and NWRITE_R. The RapidIO DMA channel interface allows
- * to specify the required type of write operation or combination of them when
- * only the last data packet requires response.
- *
- * NREAD: read up to 256 bytes from remote device memory into local memory
- * NWRITE: write up to 256 bytes from local memory to remote device memory
- * without confirmation
- * SWRITE: as NWRITE, but all addresses and payloads must be 64-bit aligned
- * NWRITE_R: as NWRITE, but expect acknowledgment from remote device.
- *
- * The default exchange is chosen from NREAD and any of the WRITE modes as the
- * driver sees fit. For write requests the user can explicitly choose between
- * any of the write modes for each transaction.
- */
-enum rio_exchange {
- RIO_EXCHANGE_DEFAULT, /* Default method */
- RIO_EXCHANGE_NWRITE, /* All packets using NWRITE */
- RIO_EXCHANGE_SWRITE, /* All packets using SWRITE */
- RIO_EXCHANGE_NWRITE_R, /* Last packet NWRITE_R, others NWRITE */
- RIO_EXCHANGE_SWRITE_R, /* Last packet NWRITE_R, others SWRITE */
- RIO_EXCHANGE_NWRITE_R_ALL, /* All packets using NWRITE_R */
-};
-
-struct rio_transfer_io {
- uint32_t rioid; /* Target destID */
- uint64_t rio_addr; /* Address in target's RIO mem space */
- enum rio_exchange method; /* Data exchange method */
- void __user *loc_addr;
- uint64_t handle;
- uint64_t offset; /* Offset in buffer */
- uint64_t length; /* Length in bytes */
- uint32_t completion_code; /* Completion code for this transfer */
-};
-
-struct rio_transaction {
- uint32_t transfer_mode; /* Data transfer mode */
- enum rio_transfer_sync sync; /* Synchronization method */
- enum rio_transfer_dir dir; /* Transfer direction */
- size_t count; /* Number of transfers */
- struct rio_transfer_io __user *block; /* Array of <count> transfers */
-};
-
-struct rio_async_tx_wait {
- uint32_t token; /* DMA transaction ID token */
- uint32_t timeout; /* Wait timeout in msec, if 0 use default TO */
-};
-
-#define RIO_MAX_DEVNAME_SZ 20
-
-struct rio_rdev_info {
- uint32_t destid;
- uint8_t hopcount;
- uint32_t comptag;
- char name[RIO_MAX_DEVNAME_SZ + 1];
-};
-
-/* Driver IOCTL codes */
-#define RIO_MPORT_DRV_MAGIC 'm'
-
-#define RIO_MPORT_MAINT_HDID_SET \
- _IOW(RIO_MPORT_DRV_MAGIC, 1, uint16_t)
-#define RIO_MPORT_MAINT_COMPTAG_SET \
- _IOW(RIO_MPORT_DRV_MAGIC, 2, uint32_t)
-#define RIO_MPORT_MAINT_PORT_IDX_GET \
- _IOR(RIO_MPORT_DRV_MAGIC, 3, uint32_t)
-#define RIO_MPORT_GET_PROPERTIES \
- _IOR(RIO_MPORT_DRV_MAGIC, 4, struct rio_mport_properties)
-#define RIO_MPORT_MAINT_READ_LOCAL \
- _IOR(RIO_MPORT_DRV_MAGIC, 5, struct rio_mport_maint_io)
-#define RIO_MPORT_MAINT_WRITE_LOCAL \
- _IOW(RIO_MPORT_DRV_MAGIC, 6, struct rio_mport_maint_io)
-#define RIO_MPORT_MAINT_READ_REMOTE \
- _IOR(RIO_MPORT_DRV_MAGIC, 7, struct rio_mport_maint_io)
-#define RIO_MPORT_MAINT_WRITE_REMOTE \
- _IOW(RIO_MPORT_DRV_MAGIC, 8, struct rio_mport_maint_io)
-#define RIO_ENABLE_DOORBELL_RANGE \
- _IOW(RIO_MPORT_DRV_MAGIC, 9, struct rio_doorbell_filter)
-#define RIO_DISABLE_DOORBELL_RANGE \
- _IOW(RIO_MPORT_DRV_MAGIC, 10, struct rio_doorbell_filter)
-#define RIO_ENABLE_PORTWRITE_RANGE \
- _IOW(RIO_MPORT_DRV_MAGIC, 11, struct rio_pw_filter)
-#define RIO_DISABLE_PORTWRITE_RANGE \
- _IOW(RIO_MPORT_DRV_MAGIC, 12, struct rio_pw_filter)
-#define RIO_SET_EVENT_MASK \
- _IOW(RIO_MPORT_DRV_MAGIC, 13, unsigned int)
-#define RIO_GET_EVENT_MASK \
- _IOR(RIO_MPORT_DRV_MAGIC, 14, unsigned int)
-#define RIO_MAP_OUTBOUND \
- _IOWR(RIO_MPORT_DRV_MAGIC, 15, struct rio_mmap)
-#define RIO_UNMAP_OUTBOUND \
- _IOW(RIO_MPORT_DRV_MAGIC, 16, struct rio_mmap)
-#define RIO_MAP_INBOUND \
- _IOWR(RIO_MPORT_DRV_MAGIC, 17, struct rio_mmap)
-#define RIO_UNMAP_INBOUND \
- _IOW(RIO_MPORT_DRV_MAGIC, 18, uint64_t)
-#define RIO_ALLOC_DMA \
- _IOWR(RIO_MPORT_DRV_MAGIC, 19, struct rio_dma_mem)
-#define RIO_FREE_DMA \
- _IOW(RIO_MPORT_DRV_MAGIC, 20, uint64_t)
-#define RIO_TRANSFER \
- _IOWR(RIO_MPORT_DRV_MAGIC, 21, struct rio_transaction)
-#define RIO_WAIT_FOR_ASYNC \
- _IOW(RIO_MPORT_DRV_MAGIC, 22, struct rio_async_tx_wait)
-#define RIO_DEV_ADD \
- _IOW(RIO_MPORT_DRV_MAGIC, 23, struct rio_rdev_info)
-#define RIO_DEV_DEL \
- _IOW(RIO_MPORT_DRV_MAGIC, 24, struct rio_rdev_info)
-
-#endif /* _RIO_MPORT_CDEV_H_ */
#ifdef CONFIG_MEMCG
static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)
{
+ /* Cgroup2 doesn't have per-cgroup swappiness */
+ if (cgroup_subsys_on_dfl(memory_cgrp_subsys))
+ return vm_swappiness;
+
/* root ? */
if (mem_cgroup_disabled() || !memcg->css.parent)
return vm_swappiness;
--- /dev/null
+/*
+ * Copyright (c) 2015-2016, Integrated Device Technology Inc.
+ * Copyright (c) 2015, Prodrive Technologies
+ * Copyright (c) 2015, Texas Instruments Incorporated
+ * Copyright (c) 2015, RapidIO Trade Association
+ * All rights reserved.
+ *
+ * This software is available to you under a choice of one of two licenses.
+ * You may choose to be licensed under the terms of the GNU General Public
+ * License(GPL) Version 2, or the BSD-3 Clause license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RIO_MPORT_CDEV_H_
+#define _RIO_MPORT_CDEV_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+struct rio_mport_maint_io {
+ __u16 rioid; /* destID of remote device */
+ __u8 hopcount; /* hopcount to remote device */
+ __u8 pad0[5];
+ __u32 offset; /* offset in register space */
+ __u32 length; /* length in bytes */
+ __u64 buffer; /* pointer to data buffer */
+};
+
+/*
+ * Definitions for RapidIO data transfers:
+ * - memory mapped (MAPPED)
+ * - packet generation from memory (TRANSFER)
+ */
+#define RIO_TRANSFER_MODE_MAPPED (1 << 0)
+#define RIO_TRANSFER_MODE_TRANSFER (1 << 1)
+#define RIO_CAP_DBL_SEND (1 << 2)
+#define RIO_CAP_DBL_RECV (1 << 3)
+#define RIO_CAP_PW_SEND (1 << 4)
+#define RIO_CAP_PW_RECV (1 << 5)
+#define RIO_CAP_MAP_OUTB (1 << 6)
+#define RIO_CAP_MAP_INB (1 << 7)
+
+struct rio_mport_properties {
+ __u16 hdid;
+ __u8 id; /* Physical port ID */
+ __u8 index;
+ __u32 flags;
+ __u32 sys_size; /* Default addressing size */
+ __u8 port_ok;
+ __u8 link_speed;
+ __u8 link_width;
+ __u8 pad0;
+ __u32 dma_max_sge;
+ __u32 dma_max_size;
+ __u32 dma_align;
+ __u32 transfer_mode; /* Default transfer mode */
+ __u32 cap_sys_size; /* Capable system sizes */
+ __u32 cap_addr_size; /* Capable addressing sizes */
+ __u32 cap_transfer_mode; /* Capable transfer modes */
+ __u32 cap_mport; /* Mport capabilities */
+};
+
+/*
+ * Definitions for RapidIO events;
+ * - incoming port-writes
+ * - incoming doorbells
+ */
+#define RIO_DOORBELL (1 << 0)
+#define RIO_PORTWRITE (1 << 1)
+
+struct rio_doorbell {
+ __u16 rioid;
+ __u16 payload;
+};
+
+struct rio_doorbell_filter {
+ __u16 rioid; /* Use RIO_INVALID_DESTID to match all ids */
+ __u16 low;
+ __u16 high;
+ __u16 pad0;
+};
+
+
+struct rio_portwrite {
+ __u32 payload[16];
+};
+
+struct rio_pw_filter {
+ __u32 mask;
+ __u32 low;
+ __u32 high;
+ __u32 pad0;
+};
+
+/* RapidIO base address for inbound requests set to value defined below
+ * indicates that no specific RIO-to-local address translation is requested
+ * and driver should use direct (one-to-one) address mapping.
+*/
+#define RIO_MAP_ANY_ADDR (__u64)(~((__u64) 0))
+
+struct rio_mmap {
+ __u16 rioid;
+ __u16 pad0[3];
+ __u64 rio_addr;
+ __u64 length;
+ __u64 handle;
+ __u64 address;
+};
+
+struct rio_dma_mem {
+ __u64 length; /* length of DMA memory */
+ __u64 dma_handle; /* handle associated with this memory */
+ __u64 address;
+};
+
+struct rio_event {
+ __u32 header; /* event type RIO_DOORBELL or RIO_PORTWRITE */
+ union {
+ struct rio_doorbell doorbell; /* header for RIO_DOORBELL */
+ struct rio_portwrite portwrite; /* header for RIO_PORTWRITE */
+ } u;
+ __u32 pad0;
+};
+
+enum rio_transfer_sync {
+ RIO_TRANSFER_SYNC, /* synchronous transfer */
+ RIO_TRANSFER_ASYNC, /* asynchronous transfer */
+ RIO_TRANSFER_FAF, /* fire-and-forget transfer */
+};
+
+enum rio_transfer_dir {
+ RIO_TRANSFER_DIR_READ, /* Read operation */
+ RIO_TRANSFER_DIR_WRITE, /* Write operation */
+};
+
+/*
+ * RapidIO data exchange transactions are lists of individual transfers. Each
+ * transfer exchanges data between two RapidIO devices by remote direct memory
+ * access and has its own completion code.
+ *
+ * The RapidIO specification defines four types of data exchange requests:
+ * NREAD, NWRITE, SWRITE and NWRITE_R. The RapidIO DMA channel interface allows
+ * to specify the required type of write operation or combination of them when
+ * only the last data packet requires response.
+ *
+ * NREAD: read up to 256 bytes from remote device memory into local memory
+ * NWRITE: write up to 256 bytes from local memory to remote device memory
+ * without confirmation
+ * SWRITE: as NWRITE, but all addresses and payloads must be 64-bit aligned
+ * NWRITE_R: as NWRITE, but expect acknowledgment from remote device.
+ *
+ * The default exchange is chosen from NREAD and any of the WRITE modes as the
+ * driver sees fit. For write requests the user can explicitly choose between
+ * any of the write modes for each transaction.
+ */
+enum rio_exchange {
+ RIO_EXCHANGE_DEFAULT, /* Default method */
+ RIO_EXCHANGE_NWRITE, /* All packets using NWRITE */
+ RIO_EXCHANGE_SWRITE, /* All packets using SWRITE */
+ RIO_EXCHANGE_NWRITE_R, /* Last packet NWRITE_R, others NWRITE */
+ RIO_EXCHANGE_SWRITE_R, /* Last packet NWRITE_R, others SWRITE */
+ RIO_EXCHANGE_NWRITE_R_ALL, /* All packets using NWRITE_R */
+};
+
+struct rio_transfer_io {
+ __u64 rio_addr; /* Address in target's RIO mem space */
+ __u64 loc_addr;
+ __u64 handle;
+ __u64 offset; /* Offset in buffer */
+ __u64 length; /* Length in bytes */
+ __u16 rioid; /* Target destID */
+ __u16 method; /* Data exchange method, one of rio_exchange enum */
+ __u32 completion_code; /* Completion code for this transfer */
+};
+
+struct rio_transaction {
+ __u64 block; /* Pointer to array of <count> transfers */
+ __u32 count; /* Number of transfers */
+ __u32 transfer_mode; /* Data transfer mode */
+ __u16 sync; /* Synch method, one of rio_transfer_sync enum */
+ __u16 dir; /* Transfer direction, one of rio_transfer_dir enum */
+ __u32 pad0;
+};
+
+struct rio_async_tx_wait {
+ __u32 token; /* DMA transaction ID token */
+ __u32 timeout; /* Wait timeout in msec, if 0 use default TO */
+};
+
+#define RIO_MAX_DEVNAME_SZ 20
+
+struct rio_rdev_info {
+ __u16 destid;
+ __u8 hopcount;
+ __u8 pad0;
+ __u32 comptag;
+ char name[RIO_MAX_DEVNAME_SZ + 1];
+};
+
+/* Driver IOCTL codes */
+#define RIO_MPORT_DRV_MAGIC 'm'
+
+#define RIO_MPORT_MAINT_HDID_SET \
+ _IOW(RIO_MPORT_DRV_MAGIC, 1, __u16)
+#define RIO_MPORT_MAINT_COMPTAG_SET \
+ _IOW(RIO_MPORT_DRV_MAGIC, 2, __u32)
+#define RIO_MPORT_MAINT_PORT_IDX_GET \
+ _IOR(RIO_MPORT_DRV_MAGIC, 3, __u32)
+#define RIO_MPORT_GET_PROPERTIES \
+ _IOR(RIO_MPORT_DRV_MAGIC, 4, struct rio_mport_properties)
+#define RIO_MPORT_MAINT_READ_LOCAL \
+ _IOR(RIO_MPORT_DRV_MAGIC, 5, struct rio_mport_maint_io)
+#define RIO_MPORT_MAINT_WRITE_LOCAL \
+ _IOW(RIO_MPORT_DRV_MAGIC, 6, struct rio_mport_maint_io)
+#define RIO_MPORT_MAINT_READ_REMOTE \
+ _IOR(RIO_MPORT_DRV_MAGIC, 7, struct rio_mport_maint_io)
+#define RIO_MPORT_MAINT_WRITE_REMOTE \
+ _IOW(RIO_MPORT_DRV_MAGIC, 8, struct rio_mport_maint_io)
+#define RIO_ENABLE_DOORBELL_RANGE \
+ _IOW(RIO_MPORT_DRV_MAGIC, 9, struct rio_doorbell_filter)
+#define RIO_DISABLE_DOORBELL_RANGE \
+ _IOW(RIO_MPORT_DRV_MAGIC, 10, struct rio_doorbell_filter)
+#define RIO_ENABLE_PORTWRITE_RANGE \
+ _IOW(RIO_MPORT_DRV_MAGIC, 11, struct rio_pw_filter)
+#define RIO_DISABLE_PORTWRITE_RANGE \
+ _IOW(RIO_MPORT_DRV_MAGIC, 12, struct rio_pw_filter)
+#define RIO_SET_EVENT_MASK \
+ _IOW(RIO_MPORT_DRV_MAGIC, 13, __u32)
+#define RIO_GET_EVENT_MASK \
+ _IOR(RIO_MPORT_DRV_MAGIC, 14, __u32)
+#define RIO_MAP_OUTBOUND \
+ _IOWR(RIO_MPORT_DRV_MAGIC, 15, struct rio_mmap)
+#define RIO_UNMAP_OUTBOUND \
+ _IOW(RIO_MPORT_DRV_MAGIC, 16, struct rio_mmap)
+#define RIO_MAP_INBOUND \
+ _IOWR(RIO_MPORT_DRV_MAGIC, 17, struct rio_mmap)
+#define RIO_UNMAP_INBOUND \
+ _IOW(RIO_MPORT_DRV_MAGIC, 18, __u64)
+#define RIO_ALLOC_DMA \
+ _IOWR(RIO_MPORT_DRV_MAGIC, 19, struct rio_dma_mem)
+#define RIO_FREE_DMA \
+ _IOW(RIO_MPORT_DRV_MAGIC, 20, __u64)
+#define RIO_TRANSFER \
+ _IOWR(RIO_MPORT_DRV_MAGIC, 21, struct rio_transaction)
+#define RIO_WAIT_FOR_ASYNC \
+ _IOW(RIO_MPORT_DRV_MAGIC, 22, struct rio_async_tx_wait)
+#define RIO_DEV_ADD \
+ _IOW(RIO_MPORT_DRV_MAGIC, 23, struct rio_rdev_info)
+#define RIO_DEV_DEL \
+ _IOW(RIO_MPORT_DRV_MAGIC, 24, struct rio_rdev_info)
+
+#endif /* _RIO_MPORT_CDEV_H_ */
static inline __attribute_const__ __u16 __fswab16(__u16 val)
{
-#ifdef __HAVE_BUILTIN_BSWAP16__
- return __builtin_bswap16(val);
-#elif defined (__arch_swab16)
+#if defined (__arch_swab16)
return __arch_swab16(val);
#else
return ___constant_swab16(val);
static inline __attribute_const__ __u32 __fswab32(__u32 val)
{
-#ifdef __HAVE_BUILTIN_BSWAP32__
- return __builtin_bswap32(val);
-#elif defined(__arch_swab32)
+#if defined(__arch_swab32)
return __arch_swab32(val);
#else
return ___constant_swab32(val);
static inline __attribute_const__ __u64 __fswab64(__u64 val)
{
-#ifdef __HAVE_BUILTIN_BSWAP64__
- return __builtin_bswap64(val);
-#elif defined (__arch_swab64)
+#if defined (__arch_swab64)
return __arch_swab64(val);
#elif defined(__SWAB_64_THRU_32__)
__u32 h = val >> 32;
* __swab16 - return a byteswapped 16-bit value
* @x: value to byteswap
*/
+#ifdef __HAVE_BUILTIN_BSWAP16__
+#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
+#else
#define __swab16(x) \
(__builtin_constant_p((__u16)(x)) ? \
___constant_swab16(x) : \
__fswab16(x))
+#endif
/**
* __swab32 - return a byteswapped 32-bit value
* @x: value to byteswap
*/
+#ifdef __HAVE_BUILTIN_BSWAP32__
+#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
+#else
#define __swab32(x) \
(__builtin_constant_p((__u32)(x)) ? \
___constant_swab32(x) : \
__fswab32(x))
+#endif
/**
* __swab64 - return a byteswapped 64-bit value
* @x: value to byteswap
*/
+#ifdef __HAVE_BUILTIN_BSWAP64__
+#define __swab64(x) (__u64)__builtin_bswap64((__u64)(x))
+#else
#define __swab64(x) \
(__builtin_constant_p((__u64)(x)) ? \
___constant_swab64(x) : \
__fswab64(x))
+#endif
/**
* __swahw32 - return a word-swapped 32-bit value
#define DEPOT_STACK_BITS (sizeof(depot_stack_handle_t) * 8)
+#define STACK_ALLOC_NULL_PROTECTION_BITS 1
#define STACK_ALLOC_ORDER 2 /* 'Slab' size order for stack depot, 4 pages */
#define STACK_ALLOC_SIZE (1LL << (PAGE_SHIFT + STACK_ALLOC_ORDER))
#define STACK_ALLOC_ALIGN 4
#define STACK_ALLOC_OFFSET_BITS (STACK_ALLOC_ORDER + PAGE_SHIFT - \
STACK_ALLOC_ALIGN)
-#define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - STACK_ALLOC_OFFSET_BITS)
+#define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - \
+ STACK_ALLOC_NULL_PROTECTION_BITS - STACK_ALLOC_OFFSET_BITS)
#define STACK_ALLOC_SLABS_CAP 1024
#define STACK_ALLOC_MAX_SLABS \
(((1LL << (STACK_ALLOC_INDEX_BITS)) < STACK_ALLOC_SLABS_CAP) ? \
struct {
u32 slabindex : STACK_ALLOC_INDEX_BITS;
u32 offset : STACK_ALLOC_OFFSET_BITS;
+ u32 valid : STACK_ALLOC_NULL_PROTECTION_BITS;
};
};
stack->size = size;
stack->handle.slabindex = depot_index;
stack->handle.offset = depot_offset >> STACK_ALLOC_ALIGN;
+ stack->handle.valid = 1;
memcpy(stack->entries, entries, size * sizeof(unsigned long));
depot_offset += required_size;
pfn = isolate_migratepages_block(cc, pfn, block_end_pfn,
ISOLATE_UNEVICTABLE);
- /*
- * In case of fatal failure, release everything that might
- * have been isolated in the previous iteration, and signal
- * the failure back to caller.
- */
- if (!pfn) {
- putback_movable_pages(&cc->migratepages);
- cc->nr_migratepages = 0;
+ if (!pfn)
break;
- }
if (cc->nr_migratepages == COMPACT_CLUSTER_MAX)
break;
static inline bool kcompactd_work_requested(pg_data_t *pgdat)
{
- return pgdat->kcompactd_max_order > 0;
+ return pgdat->kcompactd_max_order > 0 || kthread_should_stop();
}
static bool kcompactd_node_suitable(pg_data_t *pgdat)
INIT_LIST_HEAD(&cc.freepages);
INIT_LIST_HEAD(&cc.migratepages);
+ if (kthread_should_stop())
+ return;
status = compact_zone(zone, &cc);
if (zone_watermark_ok(zone, cc.order, low_wmark_pages(zone),
}
}
- pr_info("%lu of %lu THP split", split, total);
+ pr_info("%lu of %lu THP split\n", split, total);
return 0;
}
{
void *ret;
- ret = debugfs_create_file("split_huge_pages", 0644, NULL, NULL,
+ ret = debugfs_create_file("split_huge_pages", 0200, NULL, NULL,
&split_huge_pages_fops);
if (!ret)
pr_warn("Failed to create split_huge_pages in debugfs");
next = pmd_addr_end(addr, end);
if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) {
if (next - addr != HPAGE_PMD_SIZE) {
-#ifdef CONFIG_DEBUG_VM
- if (!rwsem_is_locked(&tlb->mm->mmap_sem)) {
- pr_err("%s: mmap_sem is unlocked! addr=0x%lx end=0x%lx vma->vm_start=0x%lx vma->vm_end=0x%lx\n",
- __func__, addr, end,
- vma->vm_start,
- vma->vm_end);
- BUG();
- }
-#endif
+ VM_BUG_ON_VMA(vma_is_anonymous(vma) &&
+ !rwsem_is_locked(&tlb->mm->mmap_sem), vma);
split_huge_pmd(vma, pmd, addr);
} else if (zap_huge_pmd(tlb, vma, pmd, addr))
goto next;
setup_per_zone_inactive_ratio();
return 0;
}
-module_init(init_per_zone_wmark_min)
+core_initcall(init_per_zone_wmark_min)
/*
* min_free_kbytes_sysctl_handler - just a wrapper around proc_dointvec() so
static LIST_HEAD(zswap_pools);
/* protects zswap_pools list modification */
static DEFINE_SPINLOCK(zswap_pools_lock);
+/* pool counter to provide unique names to zpool */
+static atomic_t zswap_pools_count = ATOMIC_INIT(0);
/* used by param callback function */
static bool zswap_init_started;
static struct zswap_pool *zswap_pool_create(char *type, char *compressor)
{
struct zswap_pool *pool;
+ char name[38]; /* 'zswap' + 32 char (max) num + \0 */
gfp_t gfp = __GFP_NORETRY | __GFP_NOWARN | __GFP_KSWAPD_RECLAIM;
pool = kzalloc(sizeof(*pool), GFP_KERNEL);
return NULL;
}
- pool->zpool = zpool_create_pool(type, "zswap", gfp, &zswap_zpool_ops);
+ /* unique name for each pool specifically required by zsmalloc */
+ snprintf(name, 38, "zswap%x", atomic_inc_return(&zswap_pools_count));
+
+ pool->zpool = zpool_create_pool(type, name, gfp, &zswap_zpool_ops);
if (!pool->zpool) {
pr_err("%s zpool not available\n", type);
goto error;
do_usb_entry_multi(symval + i, mod);
}
+static void do_of_entry_multi(void *symval, struct module *mod)
+{
+ char alias[500];
+ int len;
+ char *tmp;
+
+ DEF_FIELD_ADDR(symval, of_device_id, name);
+ DEF_FIELD_ADDR(symval, of_device_id, type);
+ DEF_FIELD_ADDR(symval, of_device_id, compatible);
+
+ len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
+ (*type)[0] ? *type : "*");
+
+ if (compatible[0])
+ sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
+ *compatible);
+
+ /* Replace all whitespace with underscores */
+ for (tmp = alias; tmp && *tmp; tmp++)
+ if (isspace(*tmp))
+ *tmp = '_';
+
+ buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+ strcat(alias, "C");
+ add_wildcard(alias);
+ buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+}
+
+static void do_of_table(void *symval, unsigned long size,
+ struct module *mod)
+{
+ unsigned int i;
+ const unsigned long id_size = SIZE_of_device_id;
+
+ device_id_check(mod->name, "of", size, id_size, symval);
+
+ /* Leave last one: it's the terminator. */
+ size -= id_size;
+
+ for (i = 0; i < size; i += id_size)
+ do_of_entry_multi(symval + i, mod);
+}
+
/* Looks like: hid:bNvNpN */
static int do_hid_entry(const char *filename,
void *symval, char *alias)
}
ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
-static int do_of_entry (const char *filename, void *symval, char *alias)
-{
- int len;
- char *tmp;
- DEF_FIELD_ADDR(symval, of_device_id, name);
- DEF_FIELD_ADDR(symval, of_device_id, type);
- DEF_FIELD_ADDR(symval, of_device_id, compatible);
-
- len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
- (*type)[0] ? *type : "*");
-
- if (compatible[0])
- sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
- *compatible);
-
- /* Replace all whitespace with underscores */
- for (tmp = alias; tmp && *tmp; tmp++)
- if (isspace (*tmp))
- *tmp = '_';
-
- return 1;
-}
-ADD_TO_DEVTABLE("of", of_device_id, do_of_entry);
-
static int do_vio_entry(const char *filename, void *symval,
char *alias)
{
/* First handle the "special" cases */
if (sym_is(name, namelen, "usb"))
do_usb_table(symval, sym->st_size, mod);
+ if (sym_is(name, namelen, "of"))
+ do_of_table(symval, sym->st_size, mod);
else if (sym_is(name, namelen, "pnp"))
do_pnp_device_entry(symval, sym->st_size, mod);
else if (sym_is(name, namelen, "pnp_card"))
projects / deliverable / linux.git / commitdiff
