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| author | Cong Zhang <cong.zhang@oss.qualcomm.com> | 2025-12-03 11:34:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 14:03:36 +0100 |
| commit | 7b91877113945d4c300ff329b66aa566f72d0874 (patch) | |
| tree | c1c8e0aeee30a81f99c7ce3af407212dbcf4c7e2 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 6acd144fa8b115d4e7078e3882ac30151d01219a (diff) | |
blk-mq: Abort suspend when wakeup events are pending
[ Upstream commit c196bf43d706592d8801a7513603765080e495fb ]
During system suspend, wakeup capable IRQs for block device can be
delayed, which can cause blk_mq_hctx_notify_offline() to hang
indefinitely while waiting for pending request to complete.
Skip the request waiting loop and abort suspend when wakeup events are
pending to prevent the deadlock.
Fixes: bf0beec0607d ("blk-mq: drain I/O when all CPUs in a hctx are offline")
Signed-off-by: Cong Zhang <cong.zhang@oss.qualcomm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions