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| author | Pratyush Anand <panand@redhat.com> | 2016-01-29 10:50:28 +0530 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-02-10 09:25:22 +0100 |
| commit | e0115875c04548255212ebd7dbd90bdbe1257f48 (patch) | |
| tree | 8307d4f8acf99dce2cb7ed477fae77fa98dae449 /arch/ia64 | |
| parent | 66adce8f1f9f3bcd743a0e72c10aa850df8c5fa7 (diff) | |
| download | lwn-e0115875c04548255212ebd7dbd90bdbe1257f48.tar.gz lwn-e0115875c04548255212ebd7dbd90bdbe1257f48.zip | |
s390/stacktrace: add save_stack_trace_regs()
Implement save_stack_trace_regs, so that a stack trace of a kprobe
event can be obtained.
Without this we see following warning:
"save_stack_trace_regs() not implemented yet."
when we execute:
echo stacktrace > /sys/kernel/debug/tracing/trace_options
echo "p kfree" >> /sys/kernel/debug/tracing/kprobe_events
echo 1 > /sys/kernel/debug/tracing/events/kprobes/enable
Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Pratyush Anand <panand@redhat.com>
[heiko.carstens@de.ibm.com]: changed patch to use __save_stack_trace()
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/ia64')
0 files changed, 0 insertions, 0 deletions