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| author | Andi Kleen <ak@suse.de> | 2007-05-02 19:27:21 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:21 +0200 |
| commit | c5bcb5635a03da3158f121ae20ccbbf72b4fc62a (patch) | |
| tree | a69fff3138ad14a7949d979f2d2e5893c5cb77de /arch/x86_64 | |
| parent | 9bccb23dc5fc2d268ab676e2d4212d29e230fd86 (diff) | |
| download | op-kernel-dev-c5bcb5635a03da3158f121ae20ccbbf72b4fc62a.zip op-kernel-dev-c5bcb5635a03da3158f121ae20ccbbf72b4fc62a.tar.gz | |
[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
RDTSCP is already synchronous and doesn't need an explicit CPUID.
This is a little faster and more importantly avoids VMEXITs on Hypervisors.
Original patch from Joerg Roedel, but reworked by AK
Also includes miscompilation fix by Eric Biederman
Cc: "Joerg Roedel" <joerg.roedel@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64')
0 files changed, 0 insertions, 0 deletions
