AuxXxilium/linux_dsm_epyc7002
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5f55924dea
linux_dsm_epyc7002/arch
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Eric Dumazet 5f55924dea percpu: Avoid extra NOP in percpu_cmpxchg16b_double 
percpu_cmpxchg16b_double() uses alternative_io() and looks like :

e8 .. .. .. ..  call this_cpu_cmpxchg16b_emu
X bytes	    NOPX

or, once patched (if cpu supports native instruction) on SMP build :

65 48 0f c7 0e  cmpxchg16b %gs:(%rsi)
0f 94 c0        sete %al

on !SMP build :

48 0f c7 0e     cmpxchg16b (%rsi)
0f 94 c0        sete %al

Therefore, NOPX should be :

P6_NOP3 on SMP
P6_NOP2 on !SMP

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2011-03-28 18:06:58 +02:00
..
alpha remove dma64_addr_t 2011-03-23 19:47:18 -07:00
arm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 2011-03-27 20:37:50 -07:00
avr32 Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-03-25 20:24:05 -07:00
blackfin Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin 2011-03-24 08:24:28 -07:00
cris Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1 2011-03-25 17:41:20 +02:00
frv bitops: remove minix bitops from asm/bitops.h 2011-03-23 19:46:22 -07:00
h8300 Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-03-25 20:24:05 -07:00
ia64 lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
m32r Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-03-25 20:24:05 -07:00
m68k m68k: merge m68k and m68knommu arch directories 2011-03-25 14:05:13 +10:00
microblaze bitops: introduce CONFIG_GENERIC_FIND_BIT_LE 2011-03-23 19:46:14 -07:00
mips MIPS: JZ4740: Set nand ecc offsets for the qi_lb60 board 2011-03-25 18:45:21 +01:00
mn10300 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300 2011-03-24 10:07:50 -07:00
parisc lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
powerpc lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2011-03-25 17:47:04 -07:00
score mm: NUMA aware alloc_thread_info_node() 2011-03-22 17:44:01 -07:00
sh Merge branch 'rmobile-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2011-03-24 10:04:59 -07:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2011-03-25 17:47:38 -07:00
tile lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
um um: Use generic show_interrupts() 2011-03-24 20:35:57 +01:00
unicore32 lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
x86 percpu: Avoid extra NOP in percpu_cmpxchg16b_double 2011-03-28 18:06:58 +02:00
xtensa Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-03-25 20:24:05 -07:00
.gitignore
Kconfig oprofile, s390: Cleanups 2011-03-16 14:30:40 +01:00