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| author | Arve Hjønnevåg <arve@android.com> | 2012-05-01 21:33:34 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-05 21:50:41 +0200 |
| commit | 4d7e30d98939a0340022ccd49325a3d70f7e0238 (patch) | |
| tree | 45307bd3a0b7fafc71aea41fc518f42e2e810e76 /include/linux/capability.h | |
| parent | b86ff9820fd5df69295273b9aa68e58786ffc23f (diff) | |
| download | linux-4d7e30d98939a0340022ccd49325a3d70f7e0238.tar.gz linux-4d7e30d98939a0340022ccd49325a3d70f7e0238.tar.bz2 linux-4d7e30d98939a0340022ccd49325a3d70f7e0238.zip | |
epoll: Add a flag, EPOLLWAKEUP, to prevent suspend while epoll events are ready
When an epoll_event, that has the EPOLLWAKEUP flag set, is ready, a
wakeup_source will be active to prevent suspend. This can be used to
handle wakeup events from a driver that support poll, e.g. input, if
that driver wakes up the waitqueue passed to epoll before allowing
suspend.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/capability.h')
| -rw-r--r-- | include/linux/capability.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h index 12d52dedb229..c398cff3dab7 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -360,8 +360,11 @@ struct cpu_vfs_cap_data { #define CAP_WAKE_ALARM 35 +/* Allow preventing system suspends while epoll events are pending */ -#define CAP_LAST_CAP CAP_WAKE_ALARM +#define CAP_EPOLLWAKEUP 36 + +#define CAP_LAST_CAP CAP_EPOLLWAKEUP #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) |