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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-03-09 09:42:04 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-03-17 16:33:51 +0100 |
| commit | d2da74d1278a1b51ef18beafa9da770f0db1c617 (patch) | |
| tree | e7afcf65b6ee774a9b8d9b7681611a0f6aa4fc8e /tools/perf/scripts/python | |
| parent | 6b2c339df90788ce6aeecee78d6494f262929206 (diff) | |
tasklets: Replace barrier() with cpu_relax() in tasklet_unlock_wait()
A barrier() in a tight loop which waits for something to happen on a remote
CPU is a pointless exercise. Replace it with cpu_relax() which allows HT
siblings to make progress.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210309084241.249343366@linutronix.de
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions