diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-30 06:38:44 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-30 06:38:44 -0400 |
| commit | bdc065666a591fddc4e55cbdcd6c7b02f289b5ff (patch) | |
| tree | acb92182d7c28a8d5176feb99fd7fb110a693ab7 /kernel/sched/core.c | |
| parent | 32774ef3e4bb339cec19655946996a8c50063be4 (diff) | |
| parent | a909d3e636995ba7c349e2ca5dbb528154d4ac30 (diff) | |
Merge 4.9-rc3 into staging-next
This resolves a merge issue with
drivers/staging/iio/accel/sca3000_core.c and we want the fixes all in
here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 94732d1ab00a..42d4027f9e26 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7515,11 +7515,27 @@ static struct kmem_cache *task_group_cache __read_mostly; DECLARE_PER_CPU(cpumask_var_t, load_balance_mask); DECLARE_PER_CPU(cpumask_var_t, select_idle_mask); +#define WAIT_TABLE_BITS 8 +#define WAIT_TABLE_SIZE (1 << WAIT_TABLE_BITS) +static wait_queue_head_t bit_wait_table[WAIT_TABLE_SIZE] __cacheline_aligned; + +wait_queue_head_t *bit_waitqueue(void *word, int bit) +{ + const int shift = BITS_PER_LONG == 32 ? 5 : 6; + unsigned long val = (unsigned long)word << shift | bit; + + return bit_wait_table + hash_long(val, WAIT_TABLE_BITS); +} +EXPORT_SYMBOL(bit_waitqueue); + void __init sched_init(void) { int i, j; unsigned long alloc_size = 0, ptr; + for (i = 0; i < WAIT_TABLE_SIZE; i++) + init_waitqueue_head(bit_wait_table + i); + #ifdef CONFIG_FAIR_GROUP_SCHED alloc_size += 2 * nr_cpu_ids * sizeof(void **); #endif |