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| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-12 23:04:07 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-12 23:04:07 +0200 |
| commit | fb79d22e1d4b06385796cc0db0084a2e07beccee (patch) | |
| tree | f62b850b9b8ee1b7a4264b29e30fd7c360e23c94 /include/asm-x86/apic_64.h | |
| parent | 4e77ae3e105d28aa9410585715d83818f0abe871 (diff) | |
| download | lwn-fb79d22e1d4b06385796cc0db0084a2e07beccee.tar.gz lwn-fb79d22e1d4b06385796cc0db0084a2e07beccee.zip | |
x86: disable apic timer for AMD C1E enabled CPUs
AMDs C1E enabled CPUs stop the local apic timer, when both cores are
idle. This is a hardware feature which breaks highres/dynticks.
Add the same quirk as we have for 32 bit already.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Diffstat (limited to 'include/asm-x86/apic_64.h')
| -rw-r--r-- | include/asm-x86/apic_64.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86/apic_64.h b/include/asm-x86/apic_64.h index 81335e95365b..f32f654d1f96 100644 --- a/include/asm-x86/apic_64.h +++ b/include/asm-x86/apic_64.h @@ -19,6 +19,7 @@ extern int apic_verbosity; extern int apic_runs_main_timer; extern int ioapic_force; +extern int disable_apic_timer; /* * Define the default level of output to be very little |