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x86,vdso: Use LSL unconditionally for vgetcpu

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LSL is faster than RDTSCP and works everywhere; there's no need to
switch between them depending on CPU.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Andi Kleen <andi@firstfloor.org>
Link: http://lkml.kernel.org/r/72f73d5ec4514e02bba345b9759177ef03742efb.1414706021.git.luto@amacapital.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andy Lutomirski 2014-10-30 14:58:01 -07:00 • committed by Thomas Gleixner
commit e76b027e64
6 changed files with 19 additions and 43 deletions
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