diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 8f80ebafacc..a5dd03522e3 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -382,6 +382,37 @@ static void update_rq_clock(struct rq *rq) #define cpu_curr(cpu) (cpu_rq(cpu)->curr) /* + * Tunables that become constants when CONFIG_SCHED_DEBUG is off: + */ +#ifdef CONFIG_SCHED_DEBUG +# define const_debug __read_mostly +#else +# define const_debug static const +#endif + +/* + * Debugging: various feature bits + */ +enum { + SCHED_FEAT_FAIR_SLEEPERS = 1, + SCHED_FEAT_NEW_FAIR_SLEEPERS = 2, + SCHED_FEAT_SLEEPER_AVG = 4, + SCHED_FEAT_SLEEPER_LOAD_AVG = 8, + SCHED_FEAT_START_DEBIT = 16, + SCHED_FEAT_SKIP_INITIAL = 32, +}; + +const_debug unsigned int sysctl_sched_features = + SCHED_FEAT_FAIR_SLEEPERS *0 | + SCHED_FEAT_NEW_FAIR_SLEEPERS *1 | + SCHED_FEAT_SLEEPER_AVG *0 | + SCHED_FEAT_SLEEPER_LOAD_AVG *1 | + SCHED_FEAT_START_DEBIT *1 | + SCHED_FEAT_SKIP_INITIAL *0; + +#define sched_feat(x) (sysctl_sched_features & SCHED_FEAT_##x) + +/* * For kernel-internal use: high-speed (but slightly incorrect) per-cpu * clock constructed from sched_clock(): */ |