| commit | 91ec87d57fc38c529034e853687dfb7756de5406 | [log] [tgz] |
|---|---|---|
| author | Andy Lutomirski <luto@mit.edu> | Thu Mar 22 21:15:51 2012 -0700 |
| committer | John Stultz <john.stultz@linaro.org> | Fri Mar 23 16:49:33 2012 -0700 |
| tree | 4f88d6a7e0221bdd791a1de6d4c36b17da8337a2 | |
| parent | 88b28adf6fcdd6d10a1cfc7765bb200d7366a265 [diff] |
x86-64: Simplify and optimize vdso clock_gettime monotonic variants We used to store the wall-to-monotonic offset and the realtime base. It's faster to precompute the monotonic base. This is about a 3% speedup on Sandy Bridge for CLOCK_MONOTONIC. It's much more impressive for CLOCK_MONOTONIC_COARSE. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: John Stultz <john.stultz@linaro.org>