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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-19 09:48:42 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-19 09:48:42 -0800
commiteca9dfcd0029c8a84b1094bb84a2fb53e4addf6c (patch)
tree2e5982fef1e737ce5f8936981c7dc7fb50fc655c /arch/x86/include
parent3981e152864fcc1dbbb564e1f4c0ae11a09639d2 (diff)
parentb5b60fda1e462a849bc37dfbace2888191be82cc (diff)
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: perf session: Make events_stats u64 to avoid overflow on 32-bit arches hw-breakpoints: Fix hardware breakpoints -> perf events dependency perf events: Dont report side-band events on each cpu for per-task-per-cpu events perf events, x86/stacktrace: Fix performance/softlockup by providing a special frame pointer-only stack walker perf events, x86/stacktrace: Make stack walking optional perf events: Remove unused perf_counter.h header file perf probe: Check new event name kprobe-tracer: Check new event/group name perf probe: Check whether debugfs path is correct perf probe: Fix libdwarf include path for Debian
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/stacktrace.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h
index cf86a5e7381..35e89122a42 100644
--- a/arch/x86/include/asm/stacktrace.h
+++ b/arch/x86/include/asm/stacktrace.h
@@ -5,6 +5,29 @@ extern int kstack_depth_to_print;
int x86_is_stack_id(int id, char *name);
+struct thread_info;
+struct stacktrace_ops;
+
+typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
+ unsigned long *stack,
+ unsigned long bp,
+ const struct stacktrace_ops *ops,
+ void *data,
+ unsigned long *end,
+ int *graph);
+
+extern unsigned long
+print_context_stack(struct thread_info *tinfo,
+ unsigned long *stack, unsigned long bp,
+ const struct stacktrace_ops *ops, void *data,
+ unsigned long *end, int *graph);
+
+extern unsigned long
+print_context_stack_bp(struct thread_info *tinfo,
+ unsigned long *stack, unsigned long bp,
+ const struct stacktrace_ops *ops, void *data,
+ unsigned long *end, int *graph);
+
/* Generic stack tracer with callbacks */
struct stacktrace_ops {
@@ -14,6 +37,7 @@ struct stacktrace_ops {
void (*address)(void *data, unsigned long address, int reliable);
/* On negative return stop dumping */
int (*stack)(void *data, char *name);
+ walk_stack_t walk_stack;
};
void dump_trace(struct task_struct *tsk, struct pt_regs *regs,