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| author | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:42:07 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:42:07 +0100 |
| commit | 6aa447bcbb444cd1b738613a20627f288d631665 (patch) | |
| tree | 62030bb14be0006248181305ac1fe377a99e5b65 /arch/s390/kernel/perf_event.c | |
| parent | abedf8e2419fb873d919dd74de2e84b510259339 (diff) | |
| parent | 48be3a67da7413d62e5efbcf2c73a9dddf61fb96 (diff) | |
| download | linux-6aa447bcbb444cd1b738613a20627f288d631665.tar.gz | |
Merge branch 'sched/urgent' into sched/core, to pick up fixes before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/kernel/perf_event.c')
| -rw-r--r-- | arch/s390/kernel/perf_event.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c index cfcba2dd9bb5..0943b11a2f6e 100644 --- a/arch/s390/kernel/perf_event.c +++ b/arch/s390/kernel/perf_event.c @@ -260,12 +260,13 @@ static unsigned long __store_trace(struct perf_callchain_entry *entry, void perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs) { - unsigned long head; + unsigned long head, frame_size; struct stack_frame *head_sf; if (user_mode(regs)) return; + frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs); head = regs->gprs[15]; head_sf = (struct stack_frame *) head; @@ -273,8 +274,9 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry, return; head = head_sf->back_chain; - head = __store_trace(entry, head, S390_lowcore.async_stack - ASYNC_SIZE, - S390_lowcore.async_stack); + head = __store_trace(entry, head, + S390_lowcore.async_stack + frame_size - ASYNC_SIZE, + S390_lowcore.async_stack + frame_size); __store_trace(entry, head, S390_lowcore.thread_info, S390_lowcore.thread_info + THREAD_SIZE); |