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| author | Jan Beulich <JBeulich@novell.com> | 2011-02-17 16:54:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-02-18 08:58:00 +0100 |
| commit | 58bff947e2d164c7e5cbf7f485e4b3d4884befeb (patch) | |
| tree | 8ac78b374c6af3700b1e2dc47988bd05922bcf4b /arch/x86/kernel/irq.c | |
| parent | Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafa... (diff) | |
| download | linux-58bff947e2d164c7e5cbf7f485e4b3d4884befeb.tar.xz linux-58bff947e2d164c7e5cbf7f485e4b3d4884befeb.zip | |
x86: Eliminate pointless adjustment attempts in fixup_irqs()
Not only when an IRQ's affinity equals cpu_online_mask is there
no need to actually try to adjust the affinity, but also when
it's a subset thereof. This particularly avoids adjustment
attempts during system shutdown to any IRQs bound to CPU#0.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Gary Hade <garyhade@us.ibm.com>
LKML-Reference: <4D5D52C2020000780003272C@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irq.c')
| -rw-r--r-- | arch/x86/kernel/irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 387b6a0c9e81..78793efd3180 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -310,7 +310,7 @@ void fixup_irqs(void) data = &desc->irq_data; affinity = data->affinity; if (!irq_has_action(irq) || - cpumask_equal(affinity, cpu_online_mask)) { + cpumask_subset(affinity, cpu_online_mask)) { raw_spin_unlock(&desc->lock); continue; } |