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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 21:18:45 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-19 21:18:45 +0300 |
| commit | 311e062ad504bdf49e93cb88a22ba04d5134111c (patch) | |
| tree | e56c891d66ec5c704cf2e4cea7294ff9ecd8a079 /tools/perf/scripts/python/libxed.py | |
| parent | d7d4102f0a4a015528c0be61688bf6edf72f81f4 (diff) | |
| parent | 9861f7f66f98a6358c944c17a5d4acd07abcb1a7 (diff) | |
| download | linux-311e062ad504bdf49e93cb88a22ba04d5134111c.tar.xz | |
Merge tag 'csd-lock.2024.11.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull CSD-lock update from Paul McKenney:
"This switches from sched_clock() to ktime_get_mono_fast_ns(), which on
x86 switches from the rdtsc instruction to the rdtscp instruction,
thus avoiding instruction reorderings that cause false-positive
reports of CSD-lock stalls of almost 2^46 nanoseconds. These false
positives are rare, but really are seen in the wild"
* tag 'csd-lock.2024.11.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
locking/csd-lock: Switch from sched_clock() to ktime_get_mono_fast_ns()
Diffstat (limited to 'tools/perf/scripts/python/libxed.py')
0 files changed, 0 insertions, 0 deletions