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author | Oleg Nesterov <oleg@redhat.com> | 2012-05-11 10:59:08 +1000 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-23 22:11:12 -0400 |
commit | 4d1d61a6b203d957777d73fcebf19d90b038b5b2 (patch) | |
tree | 8b597fa00168ee59e3abf5ec8cf4e92f8fd28d8a /Documentation/wimax | |
parent | e73f8959af0439d114847eab5a8a5ce48f1217c4 (diff) | |
download | linux-4d1d61a6b203d957777d73fcebf19d90b038b5b2.tar.gz linux-4d1d61a6b203d957777d73fcebf19d90b038b5b2.tar.bz2 linux-4d1d61a6b203d957777d73fcebf19d90b038b5b2.zip |
genirq: reimplement exit_irq_thread() hook via task_work_add()
exit_irq_thread() and task->irq_thread are needed to handle the unexpected
(and unlikely) exit of irq-thread.
We can use task_work instead and make this all private to
kernel/irq/manage.c, cleanup plus micro-optimization.
1. rename exit_irq_thread() to irq_thread_dtor(), make it
static, and move it up before irq_thread().
2. change irq_thread() to do task_work_add(irq_thread_dtor)
at the start and task_work_cancel() before return.
tracehook_notify_resume() can never play with kthreads,
only do_exit()->exit_task_work() can call the callback
and this is what we want.
3. remove task_struct->irq_thread and the special hook
in do_exit().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation/wimax')
0 files changed, 0 insertions, 0 deletions