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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2024-06-12 11:54:31 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2024-07-03 17:49:11 +0300 |
| commit | 7464c0762e96904b6bf686a4dc8b3255adf1c890 (patch) | |
| tree | 693d58354ef2ba4c7079d17987e22931c35fe540 /rust/helpers/build_bug.c | |
| parent | 426fa8e4fe7bb914b5977cbce453a9926bf5b2e6 (diff) | |
| download | linux-7464c0762e96904b6bf686a4dc8b3255adf1c890.tar.xz | |
MIPS: csrc-r4k: Don't register as sched_clock if unfit
When we have more than one CPU in system, counter synchronisation
overhead can lead to a scenario that sched_clock goes backward when
being read from different CPUs.
This is accommodated by CONFIG_HAVE_UNSTABLE_SCHED_CLOCK, but it's
unavailable on 32bit kernel.
We don't want to risk sched_clock correctness, so if we have multiple
CPU in system and CONFIG_HAVE_UNSTABLE_SCHED_CLOCK is not set, we just
don't use counter as sched_clock source.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'rust/helpers/build_bug.c')
0 files changed, 0 insertions, 0 deletions