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

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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 <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20131002092529.042563462@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra
2013-10-02 11:22:33 +02:00
committed by Ingo Molnar
parent ebdc195f2e
commit 35a2af94c7
5 changed files with 73 additions and 81 deletions
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19
arch/mips/kernel/rtlx.c
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@@ -172,8 +172,9 @@ int rtlx_open(int index, int can_sleep)
if (rtlx == NULL) {
if( (p = vpe_get_shared(tclimit)) == NULL) {
if (can_sleep) {
__wait_event_interruptible(channel_wqs[index].lx_queue,
(p = vpe_get_shared(tclimit)), ret);
ret = __wait_event_interruptible(
channel_wqs[index].lx_queue,
(p = vpe_get_shared(tclimit)));
if (ret)
goto out_fail;
} else {
@@ -263,11 +264,10 @@ unsigned int rtlx_read_poll(int index, int can_sleep)
/* data available to read? */
if (chan->lx_read == chan->lx_write) {
if (can_sleep) {
int ret = 0;
__wait_event_interruptible(channel_wqs[index].lx_queue,
int ret = __wait_event_interruptible(
channel_wqs[index].lx_queue,
(chan->lx_read != chan->lx_write) ||
sp_stopping, ret);
sp_stopping);
if (ret)
return ret;
@@ -440,14 +440,13 @@ static ssize_t file_write(struct file *file, const char __user * buffer,
/* any space left... */
if (!rtlx_write_poll(minor)) {
int ret = 0;
int ret;
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
__wait_event_interruptible(channel_wqs[minor].rt_queue,
rtlx_write_poll(minor),
ret);
ret = __wait_event_interruptible(channel_wqs[minor].rt_queue,
rtlx_write_poll(minor));
if (ret)
return ret;
}