diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 12:19:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 12:19:31 -0700 |
| commit | 14587a2a25447813996e6fb9e48d48627cb75a5d (patch) | |
| tree | fb2a16f31297a8e85a1f6678231d50e2d389a1a0 /arch/x86/kernel/tsc.c | |
| parent | fce637e392a762e4d4f0fc41ac3d3f557187ac21 (diff) | |
| parent | e9d35946c84c44e33e007123d3d595ccbd21d1a4 (diff) | |
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: vdso: Remove unused variable
x86-64: Optimize vDSO time()
x86-64: Add time to vDSO
x86-64: Turn off -pg and turn on -foptimize-sibling-calls for vDSO
x86-64: Move vread_tsc into a new file with sensible options
x86-64: Vclock_gettime(CLOCK_MONOTONIC) can't ever see nsec < 0
x86-64: Don't generate cmov in vread_tsc
x86-64: Remove unnecessary barrier in vread_tsc
x86-64: Clean up vdso/kernel shared variables
Diffstat (limited to 'arch/x86/kernel/tsc.c')
| -rw-r--r-- | arch/x86/kernel/tsc.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 9335bf7dd2e7..6cc6922262af 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -763,25 +763,6 @@ static cycle_t read_tsc(struct clocksource *cs) ret : clocksource_tsc.cycle_last; } -#ifdef CONFIG_X86_64 -static cycle_t __vsyscall_fn vread_tsc(void) -{ - cycle_t ret; - - /* - * Surround the RDTSC by barriers, to make sure it's not - * speculated to outside the seqlock critical section and - * does not cause time warps: - */ - rdtsc_barrier(); - ret = (cycle_t)vget_cycles(); - rdtsc_barrier(); - - return ret >= __vsyscall_gtod_data.clock.cycle_last ? - ret : __vsyscall_gtod_data.clock.cycle_last; -} -#endif - static void resume_tsc(struct clocksource *cs) { clocksource_tsc.cycle_last = 0; |