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authorSuresh Siddha <suresh.b.siddha@intel.com>2010-11-24 01:11:40 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2010-12-14 01:23:56 +0100
commit3fb82d56ad003e804923185316236f26b30dfdd5 (patch)
tree3ee08bef7cdc0f0ed3b69be5609b53c44299a229 /lib/string.c
parentLinux 2.6.37-rc5 (diff)
downloadlinux-3fb82d56ad003e804923185316236f26b30dfdd5.tar.xz
linux-3fb82d56ad003e804923185316236f26b30dfdd5.zip
x86, suspend: Avoid unnecessary smp alternatives switch during suspend/resume
During suspend, we disable all the non boot cpus. And during resume we bring them all back again. So no need to do alternatives_smp_switch() in between. On my core 2 based laptop, this speeds up the suspend path by 15msec and the resume path by 5 msec (suspend/resume speed up differences can be attributed to the different P-states that the cpu is in during suspend/resume). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1290557500.4946.8.camel@sbsiddha-MOBL3.sc.intel.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'lib/string.c')
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