diff options
| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2024-06-12 09:54:32 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2024-07-03 16:50:12 +0200 |
| commit | 580724fce27f2b71b3e4d58bbe6d83b671929b33 (patch) | |
| tree | 05ef18ae651605975ebf08b18b7dd1c3aef29629 /arch/mips/include | |
| parent | 7464c0762e96904b6bf686a4dc8b3255adf1c890 (diff) | |
MIPS: sync-r4k: Rework based on x86 tsc_sync
The original sync-r4k did a good job on reducing jitter by determine
the "next time value", but it has a limitation that when synchronization
being performed too many times due to high core count or CPU hotplug,
the timewrap on CPU0 will become unaccpetable.
Rework the mechanism based on latest x86 tsc_sync. (It seems like
the original implementation is based on tsc_sync at that time,
so it's just a refresh.) To improve overall performance.
Tesed on Loongson64, Boston, QEMU.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/r4k-timer.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/mips/include/asm/r4k-timer.h b/arch/mips/include/asm/r4k-timer.h index 6e7361629348..432e61dd5204 100644 --- a/arch/mips/include/asm/r4k-timer.h +++ b/arch/mips/include/asm/r4k-timer.h @@ -12,15 +12,10 @@ #ifdef CONFIG_SYNC_R4K -extern void synchronise_count_master(int cpu); extern void synchronise_count_slave(int cpu); #else -static inline void synchronise_count_master(int cpu) -{ -} - static inline void synchronise_count_slave(int cpu) { } |