mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 10:01:41 +00:00
0f51f2852c
vclock_gettime's do_monotonic helper can't ever generate a negative nsec value, so it doesn't need to check whether it's negative. In the CLOCK_MONOTONIC_COARSE case, ns can't ever exceed 2e9-1, so we can avoid the loop entirely. This saves a single easily-predicted branch. Signed-off-by: Andy Lutomirski <luto@mit.edu> Cc: Andi Kleen <andi@firstfloor.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Borislav Petkov <bp@amd64.org> Link: http://lkml.kernel.org/r/%3Cd6d528d32c7a21618057cfc9005942a0fe5cb54a.1306156808.git.luto%40mit.edu%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|---|---|---|
| .. | ||
| vdso32 | ||
| .gitignore | ||
| checkundef.sh | ||
| Makefile | ||
| vclock_gettime.c | ||
| vdso32-setup.c | ||
| vdso32.S | ||
| vdso-layout.lds.S | ||
| vdso-note.S | ||
| vdso.lds.S | ||
| vdso.S | ||
| vgetcpu.c | ||
| vma.c | ||