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| author |   Benjamin Segall <bsegall@google.com> | 2025-02-14 14:12:20 -0800 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2025-02-18 10:12:49 +0100 |
| commit | f99c5bb396b8d1424ed229d1ffa6f596e3b9c36b (patch) | |
| tree | 0828a646a83c6bda57b3a35f0d96283051ff0224 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | hrtimers: Replace hrtimer_clock_to_base_table with switch-case (diff) | |
| download | linux-rng-f99c5bb396b8d1424ed229d1ffa6f596e3b9c36b.tar.xz linux-rng-f99c5bb396b8d1424ed229d1ffa6f596e3b9c36b.zip | |
posix-timers: Invoke cond_resched() during exit_itimers()
exit_itimers() loops through every timer in the process to delete it. This
requires taking the system-wide hash_lock for each of these timers, and
contends with other processes trying to create or delete timers.
When a process creates hundreds of thousands of timers, and then exits
while other processes contend with it, this can trigger softlockups on
CONFIG_PREEMPT=n.
Add a cond_resched() invocation into the loop to allow the system to make
progress.
Signed-off-by: Ben Segall <bsegall@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/xm2634gg2n23.fsf@google.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions