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authorAlex Shi <alex.shi@intel.com>2012-06-28 09:02:23 +0800
committerH. Peter Anvin <hpa@zytor.com>2012-06-27 19:29:13 -0700
commit52aec3308db85f4e9f5c8b9f5dc4fbd0138c6fa4 (patch)
tree75ad5a9e508fcbbc041d0fe4f1245c98e08af38c /arch/x86/include/asm/entry_arch.h
parent611ae8e3f5204f7480b3b405993b3352cfa16662 (diff)
downloadop-kernel-dev-52aec3308db85f4e9f5c8b9f5dc4fbd0138c6fa4.zip
op-kernel-dev-52aec3308db85f4e9f5c8b9f5dc4fbd0138c6fa4.tar.gz
x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR
There are 32 INVALIDATE_TLB_VECTOR now in kernel. That is quite big amount of vector in IDT. But it is still not enough, since modern x86 sever has more cpu number. That still causes heavy lock contention in TLB flushing. The patch using generic smp call function to replace it. That saved 32 vector number in IDT, and resolved the lock contention in TLB flushing on large system. In the NHM EX machine 4P * 8cores * HT = 64 CPUs, hackbench pthread has 3% performance increase. Signed-off-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1340845344-27557-9-git-send-email-alex.shi@intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/entry_arch.h')
-rw-r--r--arch/x86/include/asm/entry_arch.h9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/include/asm/entry_arch.h b/arch/x86/include/asm/entry_arch.h
index 0baa628..40afa00 100644
--- a/arch/x86/include/asm/entry_arch.h
+++ b/arch/x86/include/asm/entry_arch.h
@@ -15,15 +15,6 @@ BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)
BUILD_INTERRUPT(irq_move_cleanup_interrupt,IRQ_MOVE_CLEANUP_VECTOR)
BUILD_INTERRUPT(reboot_interrupt,REBOOT_VECTOR)
-
-.irp idx,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, \
- 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
-.if NUM_INVALIDATE_TLB_VECTORS > \idx
-BUILD_INTERRUPT3(invalidate_interrupt\idx,
- (INVALIDATE_TLB_VECTOR_START)+\idx,
- smp_invalidate_interrupt)
-.endif
-.endr
#endif
BUILD_INTERRUPT(x86_platform_ipi, X86_PLATFORM_IPI_VECTOR)
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