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authorFrederic Weisbecker <fweisbec@gmail.com>2009-03-05 01:49:22 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-05 12:14:41 +0100
commit0012693ad4f636c720fed3802027f9427962f540 (patch)
tree355277518dbdcc8385f374db1a5d5e15301940e0 /arch/x86
parentc4ef144a9d0803eb0a2d4110ae87e7f34e667ded (diff)
tracing/function-graph-tracer: use the more lightweight local clock
Impact: decrease hangs risks with the graph tracer on slow systems Since the function graph tracer can spend too much time on timer interrupts, it's better now to use the more lightweight local clock. Anyway, the function graph traces are more reliable on a per cpu trace. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <49af243d.06e9300a.53ad.ffff840c@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/ftrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 3925ec0184b..a85da1764b1 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -436,7 +436,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
return;
}
- calltime = cpu_clock(raw_smp_processor_id());
+ calltime = trace_clock_local();
if (ftrace_push_return_trace(old, calltime,
self_addr, &trace.depth) == -EBUSY) {