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| author | Zqiang <qiang1.zhang@intel.com> | 2021-12-26 08:52:04 +0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-02-14 10:36:58 -0800 |
| commit | d818cc76e2b4d5f6cebf8c7ce1160d652d7e572b (patch) | |
| tree | 3150d9db42c19629ccb752a6d46780cc0602fae6 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 1fe09ebe7a9c9907f516779fbe4954165dd01529 (diff) | |
kasan: Record work creation stack trace with interrupts enabled
Recording the work creation stack trace for KASAN reports in
call_rcu() is expensive, due to unwinding the stack, but also
due to acquiring depot_lock inside stackdepot (which may be contended).
Because calling kasan_record_aux_stack_noalloc() does not require
interrupts to already be disabled, this may unnecessarily extend
the time with interrupts disabled.
Therefore, move calling kasan_record_aux_stack() before the section
with interrupts disabled.
Acked-by: Marco Elver <elver@google.com>
Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions