The patch titled
revert "clockevents: Prevent clockevent_devices list corruption on cpu hotplug"
has been added to the -mm tree. Its filename is
revert-clockevents-prevent-clockevent_devices-list-corruption-on-cpu-hotplug.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: revert "clockevents: Prevent clockevent_devices list corruption on cpu hotplug"
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Revert
: commit bb6eddf7676e1c1f3e637aa93c5224488d99036f
: Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
: AuthorDate: Thu Dec 10 15:35:10 2009 +0100
: Commit: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
: CommitDate: Fri Dec 11 10:28:08 2009 +0100
:
: clockevents: Prevent clockevent_devices list corruption on cpu hotplug
due to the regression reported in
http://bugzilla.kernel.org/show_bug.cgi?id=15005
Cc: Xiaotian Feng <dfeng@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Reported-by: Martin Bammer <mrb74@xxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/time/clockevents.c | 18 +++---------------
1 file changed, 3 insertions(+), 15 deletions(-)
diff -puN kernel/time/clockevents.c~revert-clockevents-prevent-clockevent_devices-list-corruption-on-cpu-hotplug kernel/time/clockevents.c
--- a/kernel/time/clockevents.c~revert-clockevents-prevent-clockevent_devices-list-corruption-on-cpu-hotplug
+++ a/kernel/time/clockevents.c
@@ -238,9 +238,8 @@ void clockevents_exchange_device(struct
*/
void clockevents_notify(unsigned long reason, void *arg)
{
- struct clock_event_device *dev, *tmp;
+ struct list_head *node, *tmp;
unsigned long flags;
- int cpu;
raw_spin_lock_irqsave(&clockevents_lock, flags);
clockevents_do_notify(reason, arg);
@@ -251,19 +250,8 @@ void clockevents_notify(unsigned long re
* Unregister the clock event devices which were
* released from the users in the notify chain.
*/
- list_for_each_entry_safe(dev, tmp, &clockevents_released, list)
- list_del(&dev->list);
- /*
- * Now check whether the CPU has left unused per cpu devices
- */
- cpu = *((int *)arg);
- list_for_each_entry_safe(dev, tmp, &clockevent_devices, list) {
- if (cpumask_test_cpu(cpu, dev->cpumask) &&
- cpumask_weight(dev->cpumask) == 1) {
- BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
- list_del(&dev->list);
- }
- }
+ list_for_each_safe(node, tmp, &clockevents_released)
+ list_del(node);
break;
default:
break;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
next-remove-localversion.patch
i-need-old-gcc.patch
revert-input-wistron_btns-switch-to-using-sparse-keymap-library.patch
drivers-media-video-cx23885-needs-kfifo-conversion.patch
revert-clockevents-prevent-clockevent_devices-list-corruption-on-cpu-hotplug.patch
drivers-gpu-drm-radeon-radeon_combiosc-fix-warning.patch
drivers-media-video-pmsc-needs-versionh.patch
timer-stats-fix-del_timer_sync-and-try_to_del_timer_sync.patch
jffs2-avoid-using-c-keyword-new-in-userspace-visible-header.patch
3x59x-fix-pci-resource-management.patch
fs-improve-remountro-vs-buffercache-coherency.patch
mm-avoid-false-sharing-of-mm_counter-checkpatch-fixes.patch
mm-count-swap-usage-checkpatch-fixes.patch
mm-add-lowmem-detection-logic-fix.patch
mm-count-lowmem-rss-checkpatch-fixes.patch
frv-duplicate-output_buffer-of-e03-checkpatch-fixes.patch
sort-introduce-generic-list_sort-function-v3-checkpatch-fixes.patch
mm-pass-mm-flags-as-a-coredump-parameter-for-consistency-fix.patch
memcg-move-charges-of-anonymous-page-cleanup.patch
memcg-implement-memory-thresholds-checkpatch-fixes.patch
reiser4-export-remove_from_page_cache-fix.patch
reiser4.patch
reiser4-remove-simple_prepare_write-usage-checkpatch-fixes.patch
fs-reiser4-contextc-current_is_pdflush-got-removed.patch
reiser4-fix.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
getblk-handle-2tb-devices.patch
getblk-handle-2tb-devices-fix.patch
undeprecate-pci_find_device.patch
notify_change-callers-must-hold-i_mutex.patch
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