| 6bf4123760a5aece6e4829ce90b70b6ffd751d65 |
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04-Jan-2011 |
NeilBrown <neilb@suse.de> |
sched: Change wait_for_completion_*_timeout() to return a signed long
wait_for_completion_*_timeout() can return:
0: if the wait timed out
-ve: if the wait was interrupted
+ve: if the completion was completed.
As they currently return an 'unsigned long', the last two cases
are not easily distinguished which can easily result in buggy
code, as is the case for the recently added
wait_for_completion_interruptible_timeout() call in
net/sunrpc/cache.c
So change them both to return 'long'. As MAX_SCHEDULE_TIMEOUT
is LONG_MAX, a large +ve return value should never overflow.
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: J. Bruce Fields <bfields@fieldses.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <20110105125016.64ccab0e@notabene.brown>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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| ee2f154a598e96df2ebb01648a7699373bc085c7 |
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26-Oct-2010 |
Randy Dunlap <randy.dunlap@oracle.com> |
docbook: add more wait/wake/completion to device-drivers docbook
Add more wait, wake, and completion interfaces to the device-drivers
docbook.
Fix kernel-doc notation in the added files.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| 0aa12fb439838a85802ab8b7fbb9bcfc3e6e05cb |
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29-May-2010 |
Sage Weil <sage@newdream.net> |
sched: add wait_for_completion_killable_timeout
Add missing _killable_timeout variant for wait_for_completion that will
return when a timeout expires or the task is killed.
CC: Ingo Molnar <mingo@elte.hu>
CC: Andreas Herrmann <andreas.herrmann3@amd.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Sage Weil <sage@newdream.net>
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| 65eb3dc609dec17deea48dcd4de2e549d29a9824 |
|
26-Aug-2008 |
Kevin Diggs <kevdig@hypersurf.com> |
sched: add kernel doc for the completion, fix kernel-doc-nano-HOWTO.txt
This patch adds kernel doc for the completion feature.
An error in the split-man.pl PERL snippet in kernel-doc-nano-HOWTO.txt is
also fixed.
Signed-off-by: Kevin Diggs <kevdig@hypersurf.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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| be4de35263f59ca1f4740edfffbfb02cc3f2189e |
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15-Aug-2008 |
Dave Chinner <david@fromorbit.com> |
completions: uninline try_wait_for_completion and completion_done
m68k fails to build with these functions inlined in completion.h. Move
them out of line into sched.c and export them to avoid this problem.
Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| 39d2f1ab2a36ac527a6c41cfe689f50c239eaca3 |
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13-Aug-2008 |
David Chinner <david@fromorbit.com> |
[XFS] extend completions to provide XFS object flush requirements
XFS object flushing doesn't quite match existing completion semantics. It
mixed exclusive access with completion. That is, we need to mark an object as
being flushed before flushing it to disk, and then block any other attempt to
flush it until the completion occurs. We do this but adding an extra count to
the completion before we start using them. However, we still need to
determine if there is a completion in progress, and allow no-blocking attempts
fo completions to decrement the count.
To do this we introduce:
int try_wait_for_completion(struct completion *x)
returns a failure status if done == 0, otherwise decrements done
to zero and returns a "started" status. This is provided
to allow counted completions to begin safely while holding
object locks in inverted order.
int completion_done(struct completion *x)
returns 1 if there is no waiter, 0 if there is a waiter
(i.e. a completion in progress).
This replaces the use of semaphores for providing this exclusion
and completion mechanism.
SGI-PV: 981498
SGI-Modid: xfs-linux-melb:xfs-kern:31816a
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
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| 009e577e079656d51d0fe9b15e61e41b00816c29 |
|
06-Dec-2007 |
Matthew Wilcox <matthew@wil.cx> |
Add wait_for_completion_killable
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
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| b15136e9497ef5d6e08cf665e0d0acf7a229f6dc |
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24-Oct-2007 |
Ingo Molnar <mingo@elte.hu> |
sched: fix fastcall mismatch in completion APIs
Jeff Dike noticed that wait_for_completion_interruptible()'s prototype
had a mismatched fastcall.
Fix this by removing the fastcall attributes from all the completion APIs.
Found-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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| f86bf9b7bcc5d325687a8b80da8ee3eb56e02da7 |
|
10-Jul-2006 |
Ingo Molnar <mingo@elte.hu> |
[PATCH] lockdep: clean up completion initializer in smpboot.c
Clean up lockdep on-stack-completion initializer. (This also removes the
dependency on waitqueue_lock_key.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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| 8b3db9c542e18b71d4820da4dd9401ee030feacb |
|
03-Jul-2006 |
Ingo Molnar <mingo@elte.hu> |
[PATCH] lockdep: add DECLARE_COMPLETION_ONSTACK() API
lockdep needs to have the waitqueue lock initialized for on-stack waitqueues
implicitly initialized by DECLARE_COMPLETION(). Introduce the API.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
|
17-Apr-2005 |
Linus Torvalds <torvalds@ppc970.osdl.org> |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
|