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authorYong Zhang <yong.zhang0@gmail.com>2011-10-16 18:56:46 +0800
committerClark Williams <williams@redhat.com>2012-02-15 10:32:58 -0600
commit09a01e2721a5b8e5fa17772ae570ef97d5825d19 (patch)
tree9c08fc2237d6f675d782a8111ab6d37175e611c1 /kernel
parentd1cea53b7182b5e55633b2de147fbbf2c249dcff (diff)
workqueue: Use get_cpu_light() in flush_gcwq()
BUG: sleeping function called from invalid context at kernel/rtmutex.c:645 in_atomic(): 1, irqs_disabled(): 0, pid: 1739, name: bash Pid: 1739, comm: bash Not tainted 3.0.6-rt17-00284-gb76d419 #3 Call Trace: [<c06e3b5d>] ? printk+0x1d/0x20 [<c01390b6>] __might_sleep+0xe6/0x110 [<c06e633c>] rt_spin_lock+0x1c/0x30 [<c01655a6>] flush_gcwq+0x236/0x320 [<c021c651>] ? kfree+0xe1/0x1a0 [<c05b7178>] ? __cpufreq_remove_dev+0xf8/0x260 [<c0183fad>] ? rt_down_write+0xd/0x10 [<c06cd91e>] workqueue_cpu_down_callback+0x26/0x2d [<c06e9d65>] notifier_call_chain+0x45/0x60 [<c0171cfe>] __raw_notifier_call_chain+0x1e/0x30 [<c014c9b4>] __cpu_notify+0x24/0x40 [<c06cbc6f>] _cpu_down+0xdf/0x330 [<c06cbef0>] cpu_down+0x30/0x50 [<c06cd6b0>] store_online+0x50/0xa7 [<c06cd660>] ? acpi_os_map_memory+0xec/0xec [<c04f2faa>] sysdev_store+0x2a/0x40 [<c02887a4>] sysfs_write_file+0xa4/0x100 [<c0229ab2>] vfs_write+0xa2/0x170 [<c0288700>] ? sysfs_poll+0x90/0x90 [<c0229d92>] sys_write+0x42/0x70 [<c06ecedf>] sysenter_do_call+0x12/0x2d CPU 1 is now offline SMP alternatives: switching to UP code SMP alternatives: switching to SMP code Booting Node 0 Processor 1 APIC 0x1 smpboot cpu 1: start_ip = 9b000 Initializing CPU#1 BUG: sleeping function called from invalid context at kernel/rtmutex.c:645 in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: kworker/0:0 Pid: 0, comm: kworker/0:0 Not tainted 3.0.6-rt17-00284-gb76d419 #3 Call Trace: [<c06e3b5d>] ? printk+0x1d/0x20 [<c01390b6>] __might_sleep+0xe6/0x110 [<c06e633c>] rt_spin_lock+0x1c/0x30 [<c06cd85b>] workqueue_cpu_up_callback+0x56/0xf3 [<c06e9d65>] notifier_call_chain+0x45/0x60 [<c0171cfe>] __raw_notifier_call_chain+0x1e/0x30 [<c014c9b4>] __cpu_notify+0x24/0x40 [<c014c9ec>] cpu_notify+0x1c/0x20 [<c06e1d43>] notify_cpu_starting+0x1e/0x20 [<c06e0aad>] smp_callin+0xfb/0x10e [<c06e0ad9>] start_secondary+0x19/0xd7 NMI watchdog enabled, takes one hw-pmu counter. Switched to NOHz mode on CPU #1 Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Link: http://lkml.kernel.org/r/1318762607-2261-5-git-send-email-yong.zhang0@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/workqueue.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 93c0261b8ca6..ac3a3bb3acf2 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3299,14 +3299,14 @@ static void flush_gcwq(struct global_cwq *gcwq)
spin_unlock_irq(&gcwq->lock);
- gcwq = get_gcwq(get_cpu());
+ gcwq = get_gcwq(get_cpu_light());
spin_lock_irq(&gcwq->lock);
list_for_each_entry_safe(work, nw, &non_affine_works, entry) {
list_del_init(&work->entry);
___queue_work(get_work_cwq(work)->wq, gcwq, work);
}
spin_unlock_irq(&gcwq->lock);
- put_cpu();
+ put_cpu_light();
}
static int __devinit workqueue_cpu_down_callback(struct notifier_block *nfb,