83 lines
3.0 KiB
Diff
83 lines
3.0 KiB
Diff
From 0e6b40521d705113621a8ef227822305c6f24937 Mon Sep 17 00:00:00 2001
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From: Yong Zhang <yong.zhang0@gmail.com>
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Date: Sun, 16 Oct 2011 18:56:46 +0800
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Subject: [210/256] workqueue: Use get_cpu_light() in flush_gcwq()
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BUG: sleeping function called from invalid context at kernel/rtmutex.c:645
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in_atomic(): 1, irqs_disabled(): 0, pid: 1739, name: bash
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Pid: 1739, comm: bash Not tainted 3.0.6-rt17-00284-gb76d419 #3
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Call Trace:
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[<c06e3b5d>] ? printk+0x1d/0x20
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[<c01390b6>] __might_sleep+0xe6/0x110
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[<c06e633c>] rt_spin_lock+0x1c/0x30
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[<c01655a6>] flush_gcwq+0x236/0x320
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[<c021c651>] ? kfree+0xe1/0x1a0
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[<c05b7178>] ? __cpufreq_remove_dev+0xf8/0x260
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[<c0183fad>] ? rt_down_write+0xd/0x10
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[<c06cd91e>] workqueue_cpu_down_callback+0x26/0x2d
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[<c06e9d65>] notifier_call_chain+0x45/0x60
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[<c0171cfe>] __raw_notifier_call_chain+0x1e/0x30
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[<c014c9b4>] __cpu_notify+0x24/0x40
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[<c06cbc6f>] _cpu_down+0xdf/0x330
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[<c06cbef0>] cpu_down+0x30/0x50
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[<c06cd6b0>] store_online+0x50/0xa7
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[<c06cd660>] ? acpi_os_map_memory+0xec/0xec
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[<c04f2faa>] sysdev_store+0x2a/0x40
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[<c02887a4>] sysfs_write_file+0xa4/0x100
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[<c0229ab2>] vfs_write+0xa2/0x170
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[<c0288700>] ? sysfs_poll+0x90/0x90
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[<c0229d92>] sys_write+0x42/0x70
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[<c06ecedf>] sysenter_do_call+0x12/0x2d
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CPU 1 is now offline
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SMP alternatives: switching to UP code
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SMP alternatives: switching to SMP code
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Booting Node 0 Processor 1 APIC 0x1
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smpboot cpu 1: start_ip = 9b000
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Initializing CPU#1
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BUG: sleeping function called from invalid context at kernel/rtmutex.c:645
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in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: kworker/0:0
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Pid: 0, comm: kworker/0:0 Not tainted 3.0.6-rt17-00284-gb76d419 #3
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Call Trace:
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[<c06e3b5d>] ? printk+0x1d/0x20
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[<c01390b6>] __might_sleep+0xe6/0x110
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[<c06e633c>] rt_spin_lock+0x1c/0x30
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[<c06cd85b>] workqueue_cpu_up_callback+0x56/0xf3
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[<c06e9d65>] notifier_call_chain+0x45/0x60
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[<c0171cfe>] __raw_notifier_call_chain+0x1e/0x30
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[<c014c9b4>] __cpu_notify+0x24/0x40
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[<c014c9ec>] cpu_notify+0x1c/0x20
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[<c06e1d43>] notify_cpu_starting+0x1e/0x20
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[<c06e0aad>] smp_callin+0xfb/0x10e
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[<c06e0ad9>] start_secondary+0x19/0xd7
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NMI watchdog enabled, takes one hw-pmu counter.
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Switched to NOHz mode on CPU #1
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Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
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Link: http://lkml.kernel.org/r/1318762607-2261-5-git-send-email-yong.zhang0@gmail.com
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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kernel/workqueue.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/kernel/workqueue.c b/kernel/workqueue.c
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index dc50d5d..d3da5a8 100644
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--- a/kernel/workqueue.c
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+++ b/kernel/workqueue.c
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@@ -3297,14 +3297,14 @@ static void flush_gcwq(struct global_cwq *gcwq)
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spin_unlock_irq(&gcwq->lock);
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- gcwq = get_gcwq(get_cpu());
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+ gcwq = get_gcwq(get_cpu_light());
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spin_lock_irq(&gcwq->lock);
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list_for_each_entry_safe(work, nw, &non_affine_works, entry) {
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list_del_init(&work->entry);
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___queue_work(get_work_cwq(work)->wq, gcwq, work);
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}
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spin_unlock_irq(&gcwq->lock);
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- put_cpu();
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+ put_cpu_light();
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}
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static int __devinit workqueue_cpu_down_callback(struct notifier_block *nfb,
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