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| author | Hui Su <sh_def@163.com> | 2026-10-11 10:50:19 +0900 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-10-13 13:51:28 +0200 |
| commit | 159b172906110f736fdbd7af8a21d0e0b469f671 (patch) | |
| tree | 3d134a3d8c5268ff4e588c8b71f81ae13a22c6c5 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | cc459ecd9388d96dc20404b157f5a4eedb66c355 (diff) | |
sched/wait: Avoid modifying entry on failed priority registration
add_wait_queue_priority_exclusive() sets WQ_FLAG_EXCLUSIVE and
WQ_FLAG_PRIORITY before checking whether another priority waiter is
already present. Thus, when registration fails with -EBUSY, the entry
is left unqueued but with modified flags.
There is no need to modify the entry before the failure check. Move the
flag update after the check so that a rejected registration does not
unnecessarily alter the entry.
Signed-off-by: Hui Su <sh_def@163.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20261011015019.4056529-1-sh_def@163.com
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions