From 737c5c3bde5641af9c24e3a60366674af72a43ef Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 11 Jan 2006 22:45:15 +0100 Subject: [PATCH] x86_64: Don't try to synchronize the TSC over CPUs on Intel CPUs at boot. They already do this in hardware and the Linux algorithm actually adds errors. Cc: mingo@elte.hu Cc: rohit.seth@intel.com Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/proto.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-x86_64/proto.h') diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h index 56dc70b7a6e4..115e496c6139 100644 --- a/include/asm-x86_64/proto.h +++ b/include/asm-x86_64/proto.h @@ -89,6 +89,8 @@ extern void check_efer(void); extern int unhandled_signal(struct task_struct *tsk, int sig); +extern int unsynchronized_tsc(void); + extern void select_idle_routine(const struct cpuinfo_x86 *c); extern void gart_parse_options(char *); -- cgit v1.2.2