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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 /kernel/trace/trace_functions_graph.c
parentc4ef144a9d0803eb0a2d4110ae87e7f34e667ded (diff)
downloadop-kernel-dev-0012693ad4f636c720fed3802027f9427962f540.zip
op-kernel-dev-0012693ad4f636c720fed3802027f9427962f540.tar.gz
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 'kernel/trace/trace_functions_graph.c')
-rw-r--r--kernel/trace/trace_functions_graph.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index c009553..e527f2f 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -112,7 +112,7 @@ unsigned long ftrace_return_to_handler(void)
unsigned long ret;
ftrace_pop_return_trace(&trace, &ret);
- trace.rettime = cpu_clock(raw_smp_processor_id());
+ trace.rettime = trace_clock_local();
ftrace_graph_return(&trace);
if (unlikely(!ret)) {
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