The patch titled
make freezeable workqueues singlethread
has been added to the -mm tree. Its filename is
make-freezeable-workqueues-singlethread.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: make freezeable workqueues singlethread
From: Oleg Nesterov <oleg@xxxxxxxxxx>
It is a known fact that freezeable multithreaded workqueues doesn't like
CPU_DEAD. We keep them only for the incoming CPU-hotplug rework.
Sadly, we can't just kill create_freezeable_workqueue() right now, make
them singlethread.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/workqueue.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/workqueue.h~make-freezeable-workqueues-singlethread include/linux/workqueue.h
--- a/include/linux/workqueue.h~make-freezeable-workqueues-singlethread
+++ a/include/linux/workqueue.h
@@ -122,7 +122,7 @@ extern struct workqueue_struct *__create
int singlethread,
int freezeable);
#define create_workqueue(name) __create_workqueue((name), 0, 0)
-#define create_freezeable_workqueue(name) __create_workqueue((name), 0, 1)
+#define create_freezeable_workqueue(name) __create_workqueue((name), 1, 1)
#define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0)
#define create_singlethread_freezeable_workqueue(name) \
__create_workqueue((name), 1, 1)
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
libata-core-convert-to-use-cancel_rearming_delayed_work.patch
nlmclnt_recovery-dont-use-clone_sighand.patch
make-freezeable-workqueues-singlethread.patch
freezer-close-potential-race-between-refrigerator-and-thaw_tasks.patch
freezer-fix-vfork-problem.patch
freezer-take-kernel_execve-into-consideration.patch
freezer-fix-kthread_create-vs-freezer-theoretical-race.patch
freezer-fix-pf_nofreeze-vs-freezeable-race.patch
freezer-move-frozen_process-to-kernel-power-processc.patch
clone-flag-clone_parent_tidptr-leaves-invalid-results-in-memory.patch
use-write_trylock_irqsave-in-ptrace_attach.patch
tidy-up-usermode-helper-waiting-a-bit.patch
fix-stop_machine_run-problem-with-naughty-real-time-process.patch
cpu-hotplug-fix-ksoftirqd-termination-on-cpu-hotplug-with-naughty-realtime-process.patch
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