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WorkStruct: Separate delayable and non-delayable events.

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Separate delayable work items from non-delayable work items be splitting them
into a separate structure (delayed_work), which incorporates a work_struct and
the timer_list removed from work_struct.

The work_struct struct is huge, and this limits it's usefulness.  On a 64-bit
architecture it's nearly 100 bytes in size.  This reduces that by half for the
non-delayable type of event.

Signed-Off-By: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2006-11-22 14:54:01 +00:00
parent 0f9005a6f7
commit 52bad64d95
22 changed files with 96 additions and 73 deletions
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8
mm/slab.c
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@ -753,7 +753,7 @@ int slab_is_available(void)
return g_cpucache_up == FULL;
}
static DEFINE_PER_CPU(struct work_struct, reap_work);
static DEFINE_PER_CPU(struct delayed_work, reap_work);
static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep)
{
@ -916,16 +916,16 @@ static void next_reap_node(void)
*/
static void __devinit start_cpu_timer(int cpu)
{
struct work_struct *reap_work = &per_cpu(reap_work, cpu);
struct delayed_work *reap_work = &per_cpu(reap_work, cpu);
/*
* When this gets called from do_initcalls via cpucache_init(),
* init_workqueues() has already run, so keventd will be setup
* at that time.
*/
if (keventd_up() && reap_work->func == NULL) {
if (keventd_up() && reap_work->work.func == NULL) {
init_reap_node(cpu);
INIT_WORK(reap_work, cache_reap, NULL);
INIT_DELAYED_WORK(reap_work, cache_reap, NULL);
schedule_delayed_work_on(cpu, reap_work, HZ + 3 * cpu);
}
}