diff options
| author | Andi Kleen <ak@suse.de> | 2006-01-11 21:45:15 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 03:04:57 (GMT) |
| commit | 737c5c3bde5641af9c24e3a60366674af72a43ef (patch) | |
| tree | e369c6489279c9fda4a5fb1766fe1966ce9caf87 /arch/x86_64/kernel/time.c | |
| parent | 3c0217511313a46039137d2dab30fdb1c5a65e64 (diff) | |
| download | linux-fsl-qoriq-737c5c3bde5641af9c24e3a60366674af72a43ef.tar.xz | |
[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 <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/time.c')
| -rw-r--r-- | arch/x86_64/kernel/time.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c index 211bf0e..f8d4b69 100644 --- a/arch/x86_64/kernel/time.c +++ b/arch/x86_64/kernel/time.c @@ -953,7 +953,7 @@ void __init time_init(void) * Make an educated guess if the TSC is trustworthy and synchronized * over all CPUs. */ -static __init int unsynchronized_tsc(void) +__init int unsynchronized_tsc(void) { #ifdef CONFIG_SMP if (oem_force_hpet_timer()) @@ -964,7 +964,7 @@ static __init int unsynchronized_tsc(void) return 0; #endif /* Assume multi socket systems are not synchronized */ - return num_online_cpus() > 1; + return num_present_cpus() > 1; } /* |