The patch titled
hrtimers: retrigger_next_event() needs local irqs disabled
has been removed from the -mm tree. Its filename was
hrtimers-retrigger_next_event-needs-local-irqs-disabled.patch
This patch was dropped because it was withdrawn
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: hrtimers: retrigger_next_event() needs local irqs disabled
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Maciej reports "BUG: using smp_processor_id() in preemptible" warnings.
The call to hrtimer_hres_active() fiddles with per-cpu things and needs to
be called non-preemtibly. The chosen way for this function appears to be
via local_irq_disable().
Reported-by: Maciej Rutecki <maciej.rutecki@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/hrtimer.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN kernel/hrtimer.c~hrtimers-retrigger_next_event-needs-local-irqs-disabled kernel/hrtimer.c
--- a/kernel/hrtimer.c~hrtimers-retrigger_next_event-needs-local-irqs-disabled
+++ a/kernel/hrtimer.c
@@ -562,7 +562,7 @@ static int hrtimer_reprogram(struct hrti
/*
* Retrigger next event is called after clock was set
*
- * Called with interrupts disabled via on_each_cpu()
+ * Called with interrupts disabled.
*/
static void retrigger_next_event(void *arg)
{
@@ -614,8 +614,12 @@ void clock_was_set(void)
*/
void hres_timers_resume(void)
{
+ unsigned long flags;
+
/* Retrigger the CPU local events: */
+ local_irq_save(flags);
retrigger_next_event(NULL);
+ local_irq_restore(flags);
}
/*
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
kprobes-fix-module-compilation-error-with-config_kprobes=n.patch
i-need-old-gcc.patch
linux-next.patch
linux-next-git-rejects.patch
next-remove-localversion.patch
thinkpad-acpi-split-delayed-leds-stuff-clean-up-code-checkpatch-fixes.patch
x86-define-arch_want_frame_pointers-fix.patch
drivers-consolidate-driver_probe_done-loops-into-one-place-fix.patch
drivers-consolidate-driver_probe_done-loops-into-one-place-checkpatch-fixes.patch
clocksource-pass-clocksource-to-read-callback.patch
drivers-net-mlx4-profilec-fix-min-warning.patch
pci-quirks-unhide-overflow-device-on-i828675p-pe-chipsets.patch
regulator-minor-cleanup-of-virtual-consumer-fix.patch
raw-fix-rawctl-compat-ioctls-breakage-on-amd64-and-itanic.patch
scsi-dpt_i2o-is-bust-on-ia64.patch
nommu-fix-a-number-of-issues-with-the-per-mm-vma-patch.patch
hrtimers-retrigger_next_event-needs-local-irqs-disabled.patch
page_fault-retry-with-nopage_retry.patch
page_fault-retry-with-nopage_retry-fix-3-fix.patch
mm-add-proc-controls-for-pdflush-threads-fix.patch
mm-add-proc-controls-for-pdflush-threads-fix-fix.patch
proc-pid-maps-dont-show-pgoff-of-pure-anon-vmas-checkpatch-fixes.patch
rtc-convert-leap_year-into-an-inline.patch
rtc-add-platform-driver-for-efi-fix.patch
pids-document-task_pgrp-task_session-is-not-safe-without-tasklist-rcu-fix.patch
nilfs2-integrated-block-mapping-remove-nilfs-bmap-wrapper-macros-checkpatch-fixes.patch
nilfs2-inode-operations-fix.patch
nilfs2-pathname-operations-fix.patch
nilfs2-super-block-operations-fix.patch
reiser4.patch
reiser4-remove-simple_prepare_write-usage-checkpatch-fixes.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
shrink_slab-handle-bad-shrinkers.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
drivers-net-bonding-bond_sysfsc-suppress-uninitialized-var-warning.patch
w1-build-fix.patch
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