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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-05 12:53:36 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-05 12:53:36 -0500 |
commit | 96fa2b508d2d3fe040cf4ef2fffb955f0a537ea1 (patch) | |
tree | 3cec6d72a450735fe6b8ed996c7399f57c05a5cb /kernel/trace/trace_clock.c | |
parent | 7a797cdcca2b3c0031e580203f18d6c9483aaec5 (diff) | |
parent | b8007ef7422270864eae523cb38d7522a53a94d3 (diff) |
Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (40 commits)
tracing: Separate raw syscall from syscall tracer
ring-buffer-benchmark: Add parameters to set produce/consumer priorities
tracing, function tracer: Clean up strstrip() usage
ring-buffer benchmark: Run producer/consumer threads at nice +19
tracing: Remove the stale include/trace/power.h
tracing: Only print objcopy version warning once from recordmcount
tracing: Prevent build warning: 'ftrace_graph_buf' defined but not used
ring-buffer: Move access to commit_page up into function used
tracing: do not disable interrupts for trace_clock_local
ring-buffer: Add multiple iterations between benchmark timestamps
kprobes: Sanitize struct kretprobe_instance allocations
tracing: Fix to use __always_unused attribute
compiler: Introduce __always_unused
tracing: Exit with error if a weak function is used in recordmcount.pl
tracing: Move conditional into update_funcs() in recordmcount.pl
tracing: Add regex for weak functions in recordmcount.pl
tracing: Move mcount section search to front of loop in recordmcount.pl
tracing: Fix objcopy revision check in recordmcount.pl
tracing: Check absolute path of input file in recordmcount.pl
tracing: Correct the check for number of arguments in recordmcount.pl
...
Diffstat (limited to 'kernel/trace/trace_clock.c')
-rw-r--r-- | kernel/trace/trace_clock.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index 20c5f92e28a8..878c03f386ba 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c | |||
@@ -20,6 +20,8 @@ | |||
20 | #include <linux/ktime.h> | 20 | #include <linux/ktime.h> |
21 | #include <linux/trace_clock.h> | 21 | #include <linux/trace_clock.h> |
22 | 22 | ||
23 | #include "trace.h" | ||
24 | |||
23 | /* | 25 | /* |
24 | * trace_clock_local(): the simplest and least coherent tracing clock. | 26 | * trace_clock_local(): the simplest and least coherent tracing clock. |
25 | * | 27 | * |
@@ -28,17 +30,17 @@ | |||
28 | */ | 30 | */ |
29 | u64 notrace trace_clock_local(void) | 31 | u64 notrace trace_clock_local(void) |
30 | { | 32 | { |
31 | unsigned long flags; | ||
32 | u64 clock; | 33 | u64 clock; |
34 | int resched; | ||
33 | 35 | ||
34 | /* | 36 | /* |
35 | * sched_clock() is an architecture implemented, fast, scalable, | 37 | * sched_clock() is an architecture implemented, fast, scalable, |
36 | * lockless clock. It is not guaranteed to be coherent across | 38 | * lockless clock. It is not guaranteed to be coherent across |
37 | * CPUs, nor across CPU idle events. | 39 | * CPUs, nor across CPU idle events. |
38 | */ | 40 | */ |
39 | raw_local_irq_save(flags); | 41 | resched = ftrace_preempt_disable(); |
40 | clock = sched_clock(); | 42 | clock = sched_clock(); |
41 | raw_local_irq_restore(flags); | 43 | ftrace_preempt_enable(resched); |
42 | 44 | ||
43 | return clock; | 45 | return clock; |
44 | } | 46 | } |