#include <linux/percpu.h>
#include <linux/version.h>
#include <asm/local.h>
-#include "../lttng-kernel-version.h"
-#include "../lttng-clock.h"
-#include "percpu-defs.h"
-#include "random.h"
+#include <lttng-kernel-version.h>
+#include <lttng-clock.h>
+#include <wrapper/percpu-defs.h>
+#include <wrapper/random.h>
-#if ((LTTNG_KERNEL_RANGE(3,10,0, 3,10,14) && !LTTNG_RHEL_KERNEL_RANGE(3,10,0,7,0, 3,10,14,0,0)) \
+#if ((LTTNG_KERNEL_RANGE(3,10,0, 3,10,14) && !LTTNG_RHEL_KERNEL_RANGE(3,10,0,123,0,0, 3,10,14,0,0,0)) \
|| LTTNG_KERNEL_RANGE(3,11,0, 3,11,3))
#error "Linux kernels 3.10 and 3.11 introduce a deadlock in the timekeeping subsystem. Fixed by commit 7bd36014460f793c19e7d6c94dab67b0afcfcb7f \"timekeeping: Fix HRTICK related deadlock from ntp lock changes\" in Linux."
#endif
extern struct lttng_trace_clock *lttng_trace_clock;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0))
+/*
+ * Upstream Linux commit 27727df240c7 ("Avoid taking lock in NMI path with
+ * CONFIG_DEBUG_TIMEKEEPING") introduces a buggy ktime_get_mono_fast_ns().
+ * This is fixed by patch "timekeeping: Fix __ktime_get_fast_ns() regression".
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0) \
+ && !LTTNG_KERNEL_RANGE(4,8,0, 4,8,1) \
+ && !LTTNG_KERNEL_RANGE(4,7,4, 4,7,7) \
+ && !LTTNG_KERNEL_RANGE(4,4,20, 4,4,24) \
+ && !LTTNG_KERNEL_RANGE(4,1,32, 4,1,34))
DECLARE_PER_CPU(local_t, lttng_last_tsc);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0))
static inline int get_trace_clock(void)
{
- printk(KERN_WARNING "LTTng: Using mainline kernel monotonic fast clock, which is NMI-safe.\n");
+ printk_once(KERN_WARNING "LTTng: Using mainline kernel monotonic fast clock, which is NMI-safe.\n");
return 0;
}
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0)) */
static inline int get_trace_clock(void)
{
- printk(KERN_WARNING "LTTng: Using mainline kernel monotonic clock. NMIs will not be traced.\n");
+ printk_once(KERN_WARNING "LTTng: Using mainline kernel monotonic clock. NMIs will not be traced.\n");
return 0;
}
#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0)) */