Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits)
  perf session: Fix infinite loop in __perf_session__process_events
  perf evsel: Support perf_evsel__open(cpus > 1 && threads > 1)
  perf sched: Use PTHREAD_STACK_MIN to avoid pthread_attr_setstacksize() fail
  perf tools: Emit clearer message for sys_perf_event_open ENOENT return
  perf stat: better error message for unsupported events
  perf sched: Fix allocation result check
  perf, x86: P4 PMU - Fix unflagged overflows handling
  dynamic debug: Fix build issue with older gcc
  tracing: Fix TRACE_EVENT power tracepoint creation
  tracing: Fix preempt count leak
  tracepoint: Add __rcu annotation
  tracing: remove duplicate null-pointer check in skb tracepoint
  tracing/trivial: Add missing comma in TRACE_EVENT comment
  tracing: Include module.h in define_trace.h
  x86: Save rbp in pt_regs on irq entry
  x86, dumpstack: Fix unused variable warning
  x86, NMI: Clean-up default_do_nmi()
  x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU
  x86, NMI: Remove DIE_NMI_IPI
  x86, NMI: Add priorities to handlers
  ...

1 files changed, 4 insertions, 14 deletions

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index a90b3892074a..1c70028f81f9 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -44,34 +44,24 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
 extern int ddebug_remove_module(const char *mod_name);
 
 #define dynamic_pr_debug(fmt, ...) do {                                 \
-        __label__ do_printk;                                            \
-        __label__ out;                                                  \
         static struct _ddebug descriptor                                \
         __used                                                          \
         __attribute__((section("__verbose"), aligned(8))) =             \
         { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__,            \
                 _DPRINTK_FLAGS_DEFAULT };                               \
-        JUMP_LABEL(&descriptor.enabled, do_printk);                     \
-        goto out;                                                       \
-do_printk:                                                              \
-        printk(KERN_DEBUG pr_fmt(fmt),  ##__VA_ARGS__);                 \
-out:    ;                                                               \
+        if (unlikely(descriptor.enabled))                               \
+                printk(KERN_DEBUG pr_fmt(fmt),  ##__VA_ARGS__);         \
         } while (0)
 
 
 #define dynamic_dev_dbg(dev, fmt, ...) do {                             \
-        __label__ do_printk;                                            \
-        __label__ out;                                                  \
         static struct _ddebug descriptor                                \
         __used                                                          \
         __attribute__((section("__verbose"), aligned(8))) =             \
         { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__,            \
                 _DPRINTK_FLAGS_DEFAULT };                               \
-        JUMP_LABEL(&descriptor.enabled, do_printk);                     \
-        goto out;                                                       \
-do_printk:                                                              \
-        dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__);                \
-out:    ;                                                               \
+        if (unlikely(descriptor.enabled))                               \
+                dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__);        \
         } while (0)
 
 #else