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authorGreg Kroah-Hartman2019-01-28 08:44:58 +0100
committerGreg Kroah-Hartman2019-01-28 08:44:58 +0100
commitc9381e185fdcf86e9d7966d638c933894f87cdd7 (patch)
treed99259aded85a3fb95e9d52c56d9d3a0cfdfe460 /include/linux/sched/wake_q.h
parentusb: ftdi-elan: Fix if == else warnings in ftdi_elan_respond_engine (diff)
parentLinux 5.0-rc4 (diff)
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Merge 5.0-rc4 into usb-next
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/sched/wake_q.h')
-rw-r--r--include/linux/sched/wake_q.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/sched/wake_q.h b/include/linux/sched/wake_q.h
index 10b19a192b2d..545f37138057 100644
--- a/include/linux/sched/wake_q.h
+++ b/include/linux/sched/wake_q.h
@@ -24,9 +24,13 @@
* called near the end of a function. Otherwise, the list can be
* re-initialized for later re-use by wake_q_init().
*
- * Note that this can cause spurious wakeups. schedule() callers
+ * NOTE that this can cause spurious wakeups. schedule() callers
* must ensure the call is done inside a loop, confirming that the
* wakeup condition has in fact occurred.
+ *
+ * NOTE that there is no guarantee the wakeup will happen any later than the
+ * wake_q_add() location. Therefore task must be ready to be woken at the
+ * location of the wake_q_add().
*/
#include <linux/sched.h>