13 Jun, 2009
2 commits
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This is needed if the header is to be free-standing.
Signed-off-by: Vegard Nossum
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This will help kmemcheck (and possibly other debugging tools) since we
can now simply pass regs->bp to the stack tracer instead of specifying
the number of stack frames to skip, which is unreliable if gcc decides
to inline functions, etc.Note that this makes the API incomplete for other architectures, but I
expect that those can be updated lazily, e.g. when they need it.Cc: Arjan van de Ven
Signed-off-by: Vegard Nossum
23 Nov, 2008
3 commits
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Impact: cleanup
User stack tracing is just implemented for x86, but it is not x86 specific.
Introduce a generic config flag, that is currently enabled only for x86.
When other arches implement it, they will have to
SELECT USER_STACKTRACE_SUPPORT.Signed-off-by: Török Edwin
Signed-off-by: Ingo Molnar -
Impact: cleanup
Signed-off-by: Török Edwin
Signed-off-by: Ingo Molnar -
Impact: add new (default-off) tracing visualization feature
Usage example:
mount -t debugfs nodev /sys/kernel/debug
cd /sys/kernel/debug/tracing
echo userstacktrace >iter_ctrl
echo sched_switch >current_tracer
echo 1 >tracing_enabled
.... run application ...
echo 0 >tracing_enabledThen read one of 'trace','latency_trace','trace_pipe'.
To get the best output you can compile your userspace programs with
frame pointers (at least glibc + the app you are tracing).Signed-off-by: Török Edwin
Signed-off-by: Ingo Molnar
04 Oct, 2008
1 commit
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include/linux/stacktrace.h:13: warning:
'struct task_struct' declared inside parameter list(This might be a hard error on sparc64, which uses this header and has
-Werror)Reported-by: "Randy.Dunlap"
Acked-by: Ingo Molnar
Cc: Peter Zijlstra
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jan, 2008
1 commit
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LatencyTOP kernel infrastructure; it measures latencies in the
scheduler and tracks it system wide and per process.Signed-off-by: Arjan van de Ven
Signed-off-by: Ingo Molnar
20 Jul, 2007
1 commit
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The print_stack_trace macro in stacktrace.h has a wrong number of
arguments, fix it.Signed-off-by: Johannes Berg
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 May, 2007
1 commit
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Simplify the stacktrace code:
- remove the unused task argument to save_stack_trace, it's always
current
- remove the all_contexts flag, it's alwasy 0Signed-off-by: Christoph Hellwig
Cc: Paul Mundt
Cc: Ralf Baechle
Cc: Martin Schwidefsky
Cc: "David S. Miller"
Cc: Andi Kleen
Cc: Akinobu Mita
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Sep, 2006
1 commit
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- Remove unused all_contexts parameter
No caller used it
- Move skip argument into the structure (needed for
followon patches)Cc: mingo@elte.hu
Signed-off-by: Andi Kleen
04 Jul, 2006
1 commit
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Framework to generate and save stacktraces quickly, without printing anything
to the console.Signed-off-by: Ingo Molnar
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
