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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2023-08-03 12:09:31 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2023-09-19 22:08:29 +0200 |
| commit | a20d6f63dbfc176697886d7709312ad0a795648e (patch) | |
| tree | 7fefa92d3aa507eb7e9f89cba946e10dbf1b056b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Linux 6.6-rc1 (diff) | |
| download | wireguard-linux-a20d6f63dbfc176697886d7709312ad0a795648e.tar.xz wireguard-linux-a20d6f63dbfc176697886d7709312ad0a795648e.zip | |
signal: Add a proper comment about preempt_disable() in ptrace_stop()
Commit 53da1d9456fe7 ("fix ptrace slowness") added a preempt-disable section
between read_unlock() and the following schedule() invocation without
explaining why it is needed.
Replace the existing contentless comment with a proper explanation to
clarify that it is not needed for correctness but for performance reasons.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20230803100932.325870-2-bigeasy@linutronix.de
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions