Andy Lutomirski 0f51f2852c x86-64: Vclock_gettime(CLOCK_MONOTONIC) can't ever see nsec < 0 ... 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>		2011-05-24 14:51:28 +02:00
..
vdso32	x86: gitignore arch/x86/vdso files	2008-01-30 13:32:32 +01:00
.gitignore	x86: add vdso32-int80-syms.lds to .gitignore	2008-01-30 13:33:24 +01:00
checkundef.sh	x86, vdso: Don't quote $nm in the script for checking vdso references	2010-07-27 23:52:29 -07:00
Makefile	x86-64: Clean up vdso/kernel shared variables	2011-05-24 14:51:28 +02:00
vclock_gettime.c	x86-64: Vclock_gettime(CLOCK_MONOTONIC) can't ever see nsec < 0	2011-05-24 14:51:28 +02:00
vdso32-setup.c	mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm	2011-03-23 16:36:55 -04:00
vdso32.S	x86_64: further cleanup of 32-bit compat syscall mechanisms	2008-07-16 11:08:27 +02:00
vdso-layout.lds.S	x86 vDSO: new layout	2008-01-30 13:30:41 +01:00
vdso-note.S	x86_64: move vdso	2007-10-11 11:17:10 +02:00
vdso.lds.S	x86-64: Clean up vdso/kernel shared variables	2011-05-24 14:51:28 +02:00
vdso.S	x86_64 vDSO: use initdata	2008-04-28 13:49:35 -07:00
vgetcpu.c	x86-64: Clean up vdso/kernel shared variables	2011-05-24 14:51:28 +02:00
vma.c	x86-64: Clean up vdso/kernel shared variables	2011-05-24 14:51:28 +02:00