AuxXxilium/linux_dsm_epyc7002
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f841d792e3
linux_dsm_epyc7002/arch/x86/kernel/apic
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Jiang Liu f841d792e3 x86: Return IRQ_SET_MASK_OK_NOCOPY from irq affinity functions 
The interrupt chip irq_set_affinity() functions copy the affinity mask
to irq_data->affinity but return 0, i.e. IRQ_SET_MASK_OK.
IRQ_SET_MASK_OK causes the core code to do another redundant copy.

Return IRQ_SET_MASK_OK_NOCOPY to avoid this.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Cliff Wickman <cpw@sgi.com>
Cc: Jiang Liu <liuj97@gmail.com>
Cc: Keping Chen <chenkeping@huawei.com>
Link: http://lkml.kernel.org/r/1333120296-13563-4-git-send-email-jiang.liu@huawei.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-05-24 23:16:33 +02:00
..
apic_flat_64.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
apic_noop.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
apic_numachip.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
apic.c Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-22 18:38:11 -07:00
bigsmp_32.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
es7000_32.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
hw_nmi.c x86, nmi: Wire up NMI handlers to new routines 2011-10-10 06:56:57 +02:00
io_apic.c x86: Return IRQ_SET_MASK_OK_NOCOPY from irq affinity functions 2012-05-24 23:16:33 +02:00
ipi.c
Makefile x86: Add NumaChip support 2011-12-05 17:17:24 +01:00
numaq_32.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
probe_32.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
probe_64.c x86, apic: Make apic drivers static 2011-05-22 11:48:04 +02:00
summit_32.c x86/apic: Add apic->eoi_write() callback 2012-05-18 09:46:08 +02:00
x2apic_cluster.c x86/apic: Implement EIO micro-optimization 2012-05-18 09:46:09 +02:00
x2apic_phys.c x86/apic: Implement EIO micro-optimization 2012-05-18 09:46:09 +02:00
x2apic_uv_x.c x86/apic: Implement EIO micro-optimization 2012-05-18 09:46:09 +02:00