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| author |   Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:51:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:51:58 +0200 |
| commit | 9aa7b369819940cb1f3c74ba210516739a32ad95 (patch) | |
| tree | 19f0e54740c52f143c5e88877fa75eefaf7b30ae /include/linux/sched.h | |
| parent | sched: move code into kernel/sched_stats.h (diff) | |
| download | linux-dev-9aa7b369819940cb1f3c74ba210516739a32ad95.tar.xz linux-dev-9aa7b369819940cb1f3c74ba210516739a32ad95.zip | |
sched: increase the resolution of smpnice
increase SMP-nice's resolution. This is needed by CFS to
implement SCHED_IDLE and cleaned up nice level support.
no behavioral changes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 61a111fe2b7a..d5084e7c48cf 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -652,7 +652,14 @@ enum cpu_idle_type { /* * sched-domains (multiprocessor balancing) declarations: */ -#define SCHED_LOAD_SCALE 128UL /* increase resolution of load */ + +/* + * Increase resolution of nice-level calculations: + */ +#define SCHED_LOAD_SHIFT 10 +#define SCHED_LOAD_SCALE (1L << SCHED_LOAD_SHIFT) + +#define SCHED_LOAD_SCALE_FUZZ (SCHED_LOAD_SCALE >> 5) #ifdef CONFIG_SMP #define SD_LOAD_BALANCE 1 /* Do load balancing on this domain. */ |