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| author | Oleg Nesterov <oleg@redhat.com> | 2009-06-18 01:27:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 22:03:53 +0200 |
| commit | cdd140bdd6c7bc6395f08877a73c39941501af93 (patch) | |
| tree | 48664b2790fb2b5152bd67bf70fb3405e1ef6e8b /kernel/sched_fair.c | |
| parent | mm: exit.c reorder wait_opts to remove padding on 64 bit builds (diff) | |
| download | linux-cdd140bdd6c7bc6395f08877a73c39941501af93.tar.xz linux-cdd140bdd6c7bc6395f08877a73c39941501af93.zip | |
kthreads: simplify the startup synchronization
We use two completions two create the kernel thread, this is a bit ugly.
kthread() wakes up create_kthread() via ->started, then create_kthread()
wakes up the caller kthread_create() via ->done. But kthread() does not
need to wait for kthread(), it can just return. Instead kthread() itself
can wake up the caller of kthread_create().
Kill kthread_create_info->started, ->done is enough. This improves the
scalability a bit and sijmplifies the code.
The only problem if kernel_thread() fails, in that case create_kthread()
must do complete(&create->done).
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Vitaliy Gusev <vgusev@openvz.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched_fair.c')
0 files changed, 0 insertions, 0 deletions