diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-10-04 02:16:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-04 07:55:29 -0700 |
| commit | 550f2299ac8ffaba943cf211380d3a8d3fa75301 (patch) | |
| tree | 9a8cb7b0d62f48f581f66ab4951aa6c9793131c0 /arch/x86_64/kernel/irq.c | |
| parent | e500f57436b9056a245216c53113613928155eba (diff) | |
[PATCH] genirq: x86_64 irq: make vector_irq per cpu
This refactors the irq handling code to make the vectors a per cpu resource so
the same vector number can be simultaneously used on multiple cpus for
different irqs.
This should make systems that were hitting limits on the total number of irqs
much more livable.
[akpm@osdl.org: build fix]
[akpm@osdl.org: __target_IO_APIC_irq is unneeded on UP]
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rajesh Shah <rajesh.shah@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/irq.c')
| -rw-r--r-- | arch/x86_64/kernel/irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 4542fb03199..506f27c85ca 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -110,7 +110,7 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs) exit_idle(); irq_enter(); - irq = vector_irq[vector]; + irq = __get_cpu_var(vector_irq)[vector]; if (unlikely(irq >= NR_IRQS)) { printk(KERN_EMERG "%s: cannot handle IRQ %d\n", |