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authorFrederic Weisbecker <fweisbec@gmail.com>2009-12-17 05:40:33 +0100
committerIngo Molnar <mingo@elte.hu>2009-12-17 09:56:19 +0100
commit61c1917f47f73c968e92d04d15370b1dc3ec4592 (patch)
treea20445bcaf484d270bd6cb8de5969702110af687 /arch/x86/kernel/dumpstack_32.c
parent5b74ed4729ad2b2017453add68104a83206caefb (diff)
perf events, x86/stacktrace: Make stack walking optional
The current print_context_stack helper that does the stack walking job is good for usual stacktraces as it walks through all the stack and reports even addresses that look unreliable, which is nice when we don't have frame pointers for example. But we have users like perf that only require reliable stacktraces, and those may want a more adapted stack walker, so lets make this function a callback in stacktrace_ops that users can tune for their needs. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1261024834-5336-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/dumpstack_32.c')
-rw-r--r--arch/x86/kernel/dumpstack_32.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index e0ed4c7abb6..ae775ca47b2 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -58,7 +58,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
context = (struct thread_info *)
((unsigned long)stack & (~(THREAD_SIZE - 1)));
- bp = print_context_stack(context, stack, bp, ops, data, NULL, &graph);
+ bp = ops->walk_stack(context, stack, bp, ops, data, NULL, &graph);
stack = (unsigned long *)context->previous_esp;
if (!stack)