git.baikalelectronics.ru Git - kernel.git/commit

]> git.baikalelectronics.ru Git - kernel.git/commit

author	Len Brown <len.brown@intel.com>
	Sat, 27 Feb 2016 01:51:02 +0000 (20:51 -0500)
committer	Len Brown <len.brown@intel.com>
	Sun, 13 Mar 2016 07:55:40 +0000 (03:55 -0400)
commit	775c261891deed4741d00565569ad1262c3e2bbc
tree	338ca7d3fa3ce6553b7b6a58bd40568a99a4a5de	tree \| snapshot
parent	33b142382e97499001589349e9fad09c9ffda9db	commit \| diff

tools/power turbostat: make fewer systems calls

skip the open(2)/close(2) on each msr read
by keeping the /dev/cpu/*/msr files open.

The remaining read(2) is generally far fewer cycles
than the removed open(2) system call.

Signed-off-by: Len Brown <len.brown@intel.com>

tools/power/x86/turbostat/turbostat.c

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