diff options
| author | Ian Moffett <ian@osmora.org> | 2025-07-17 17:44:05 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-07-17 18:35:22 -0400 |
| commit | 3c9e0969840d47a812f5e65fa43f694f2e7f3ff3 (patch) | |
| tree | 107d4709904495e47436889ccb17418bdaefff93 /sys/include/arch/amd64/cpu.h | |
| parent | 984b549864280696256cec135651770ff0b1251b (diff) | |
kernel: sched: Add support for CPU pinning
This commit introduces support for pinning processes to specific cores
which can be useful for things like, keeping core-specific workthreads
running on their respective processors as well as mitigating very
specific cases of false-sharing and performance degradation caused by a
thread jumping between cores which requires cache-line entries to be thrashed
around between them. Threads pinned to a specific core will always see their
cached data in the same L1, L2, etc.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/arch/amd64/cpu.h')
| -rw-r--r-- | sys/include/arch/amd64/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h index a047cef..046b621 100644 --- a/sys/include/arch/amd64/cpu.h +++ b/sys/include/arch/amd64/cpu.h @@ -46,6 +46,7 @@ struct cpu_info { uint32_t apicid; uint32_t feat; + uint8_t id; /* MI Logical ID */ uint8_t model : 4; /* CPU model number */ uint8_t family : 4; /* CPU family ID */ uint8_t has_x2apic : 1; |