diff options
Diffstat (limited to 'sys/kern/sched_ule.c')
| -rw-r--r-- | sys/kern/sched_ule.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 82d1cce..e42ec52 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -223,8 +223,13 @@ static int sched_idlespinthresh = -1; * locking in sched_pickcpu(); */ struct tdq { - /* Ordered to improve efficiency of cpu_search() and switch(). */ + /* + * Ordered to improve efficiency of cpu_search() and switch(). + * tdq_lock is padded to avoid false sharing with tdq_load and + * tdq_cpu_idle. + */ struct mtx tdq_lock; /* run queue lock. */ + char pad[64 - sizeof(struct mtx)]; struct cpu_group *tdq_cg; /* Pointer to cpu topology. */ volatile int tdq_load; /* Aggregate load. */ volatile int tdq_cpu_idle; /* cpu_idle() is active. */ |
