user/sven/linux.git/include/linux/wait.h, branch v3.16.46

wait: explain the shadowing and type inconsistencies

2014-04-18T23:40:08Z

Stick in a comment before someone else tries to fix the sparse warning this generates. Suggested-by: Andrew Morton Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-o2ro6f3vkxklni0bc8f7m68s@git.kernel.org Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sched: remove sleep_on() and friends

2014-04-07T18:24:06Z

This is the final piece in the puzzle, as all patches to remove the last users of \(interruptible_\|\)sleep_on\(_timeout\|\) have made it into the 3.15 merge window. The work was long overdue, and this interface in particular should not have survived the BKL removal that was done a couple of years ago. Citing Jon Corbet from http://lwn.net/2001/0201/kernel.php3": "[...] it was suggested that the janitors look for and fix all code that calls sleep_on() [...] since (1) almost all such code is incorrect, and (2) Linus has agreed that those functions should be removed in the 2.5 development series". We haven't quite made it for 2.5, but maybe we can merge this for 3.15. Signed-off-by: Arnd Bergmann Cc: Peter Zijlstra Cc: Ingo Molnar Signed-off-by: Linus Torvalds

sched: Fix warning on make htmldocs caused by wait.h

2014-01-22T09:25:39Z

Missing "@" in include/linux/wait.h cause "make htmldocs" failed with following warning messages. Warning(/home/iida/Repo/linux-next//include/linux/wait.h:304): No description found for parameter 'cmd1' Warning(/home/iida/Repo/linux-next//include/linux/wait.h:304): No description found for parameter 'cmd2' Signed-off-by: Masanari Iida Signed-off-by: Jiri Kosina

wait: add wait_event_cmd()

2013-11-14T04:16:16Z

Add a new API wait_event_cmd(). It's a variant of wait_even() with two commands executed. One is executed before sleep, another after sleep. Modified to match use wait.h approach based on suggestion by Peter Zijlstra - neilb Signed-off-by: Shaohua Li Signed-off-by: NeilBrown

sched/wait: Fix __wait_event_interruptible_lock_irq_timeout()

2013-11-01T07:42:44Z

__wait_event_interruptible_lock_irq_timeout() needs the timeout parameter passed instead of "ret". This magically compiled since the only user has a local ret variable. Luckily we got a build warning: CC drivers/s390/scsi/zfcp_qdio.o drivers/s390/scsi/zfcp_qdio.c: In function 'zfcp_qdio_sbal_get': include/linux/wait.h:780:15: warning: 'ret' may be used uninitialized Signed-off-by: Heiko Carstens Acked-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20131031114814.GB5551@osiris Signed-off-by: Ingo Molnar

sched/wait: Fix build breakage

2013-10-23T12:44:10Z

The wait_event_interruptible_lock_irq() macro is missing a semi-colon which causes a build failure in the i915 DRM driver. Signed-off-by: Thierry Reding Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1382528455-29911-1-git-send-email-treding@nvidia.com Signed-off-by: Ingo Molnar

sched/wait: Introduce prepare_to_wait_event()

2013-10-16T12:22:18Z

Add the new helper, prepare_to_wait_event() which should only be used by ___wait_event(). prepare_to_wait_event() returns -ERESTARTSYS if signal_pending_state() is true, otherwise it does prepare_to_wait/exclusive. This allows to uninline the signal-pending checks in wait_event*() macros. Also, it can initialize wait->private/func. We do not care if they were already initialized, the values are the same. This also shaves a couple of insns from the inlined code. This obviously makes prepare_*() path a little bit slower, but we are likely going to sleep anyway, so I think it makes sense to shrink .text: text data bss dec hex filename =================================================== before: 5126092 2959248 10117120 18202460 115bf5c vmlinux after: 5124618 2955152 10117120 18196890 115a99a vmlinux on my build. Signed-off-by: Oleg Nesterov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20131007161824.GA29757@redhat.com Signed-off-by: Ingo Molnar

sched/wait: Add ___wait_cond_timeout() to wait_event*_timeout() too

2013-10-16T12:22:17Z

Commit 4c663cfc ("wait: fix false timeouts when using wait_event_timeout()") introduced the additional condition checks after a timeout but only in the "slow" __wait*() paths. wait_event_timeout(wq, CONDITION, 0) still returns 0 if CONDITION is already true and we do not call __wait*(). Now that we have ___wait_cond_timeout() we can use it instead to ensure that __ret will be properly updated. Signed-off-by: Oleg Nesterov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20131007183106.GA10973@redhat.com Signed-off-by: Ingo Molnar

sched/wait: Clean up wait.h details a bit

2013-10-04T11:57:19Z

Since we are changing wait.h profoundly, use the opportunity to: - add a sentence to explain what this file is about - remove whitespace noise - prettify weird looking line break fixup attempts - standardize type definition and initialization sequences - use consistent style details No code is changed. Acked-by: Peter Zijlstra Cc: Oleg Nesterov Cc: Linus Torvalds Cc: Andrew Morton Link: http://lkml.kernel.org/n/tip-O8dIie5swnctqpupakatvqyq@git.kernel.org Signed-off-by: Ingo Molnar

sched/wait: Make the __wait_event*() interface more friendly

2013-10-04T08:16:25Z

Change all __wait_event*() implementations to match the corresponding wait_event*() signature for convenience. In particular this does away with the weird 'ret' logic. Since there are __wait_event*() users this requires we update them too. Reviewed-by: Oleg Nesterov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20131002092529.042563462@infradead.org Signed-off-by: Ingo Molnar