From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org,
linux-rt-users <linux-rt-users@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Carsten Emde <C.Emde@osadl.org>, John Kacur <jkacur@redhat.com>,
stable-rt@vger.kernel.org
Subject: [PATCH RT 07/12 rc3] pci: Use __wake_up_all_locked pci_unblock_user_cfg_access()
Date: Mon, 05 Dec 2011 18:00:53 -0500 [thread overview]
Message-ID: <20111205230300.044942431@goodmis.org> (raw)
In-Reply-To: 20111205230046.736851081@goodmis.org
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From: Thomas Gleixner <tglx@linutronix.de>
The waitqueue is protected by the pci_lock, so we can just avoid to
lock the waitqueue lock itself. That prevents the
might_sleep()/scheduling while atomic problem on RT
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
drivers/pci/access.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index fdaa42a..1a6cc67 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -441,7 +441,7 @@ void pci_unblock_user_cfg_access(struct pci_dev *dev)
WARN_ON(!dev->block_ucfg_access);
dev->block_ucfg_access = 0;
- wake_up_all(&pci_ucfg_wait);
+ wake_up_all_locked(&pci_ucfg_wait);
raw_spin_unlock_irqrestore(&pci_lock, flags);
}
EXPORT_SYMBOL_GPL(pci_unblock_user_cfg_access);
--
1.7.7.1
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next prev parent reply other threads:[~2011-12-05 23:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-05 23:00 [PATCH RT 00/12 rc3] [ANNOUNCE] 3.0.12-rt30-rc3 Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 01/12 rc3] tasklet/rt: Prevent tasklets from going into infinite spin in RT Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 02/12 rc3] genirq: fix regression in irqfixup, irqpoll Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 03/12 rc3] intel-iommu: Fix AB-BA lockdep report Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 04/12 rc3] KVM: Sanitize cpuid Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 05/12 rc3] KVM: fix XSAVE bit scanning (now properly) Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 06/12 rc3] wait: Provide __wake_up_all_locked Steven Rostedt
2011-12-05 23:00 ` Steven Rostedt [this message]
2011-12-05 23:00 ` [PATCH RT 08/12 rc3] acpi: Make gbl_[hardware|gpe]_lock raw Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 09/12 rc3] slab, lockdep: Fix silly bug Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 10/12 rc3] slab, lockdep: Annotate all slab caches Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 11/12 rc3] ACPI: Convert embedded controller lock to raw spinlock Steven Rostedt
2011-12-05 23:00 ` [PATCH RT 12/12 rc3] Linux v3.0.12-rt30-rc3 Steven Rostedt
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