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| author |  Ingo Molnar <mingo@kernel.org>
| 2018-10-23 12:30:19 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org>
| 2018-10-23 12:30:19 +0200 |
| commit | dda93b45389f025fd3422d22cc31cc1ea6040305 (patch) | |
| tree | 44a856744843e24ed1baf6ca4edb1be04809a606 /arch/x86/kernel/tsc.c | |
| parent | kprobes/x86: Use preempt_enable() in optimized_callback() (diff) | |
| parent | x86/intel_rdt: Prevent pseudo-locking from using stale pointers (diff) | |
| download | linux-dda93b45389f025fd3422d22cc31cc1ea6040305.tar.gz linux-dda93b45389f025fd3422d22cc31cc1ea6040305.tar.bz2 linux-dda93b45389f025fd3422d22cc31cc1ea6040305.zip | |
Merge branch 'x86/cache' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/tsc.c')
| -rw-r--r-- | arch/x86/kernel/tsc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index dd6b564f65e3..19c3c6bec325 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -26,6 +26,7 @@ #include <asm/apic.h> #include <asm/intel-family.h> #include <asm/i8259.h> +#include <asm/uv/uv.h> unsigned int __read_mostly cpu_khz; /* TSC clocks / usec, not used here */ EXPORT_SYMBOL(cpu_khz); @@ -1433,6 +1434,9 @@ void __init tsc_early_init(void) { if (!boot_cpu_has(X86_FEATURE_TSC)) return; + /* Don't change UV TSC multi-chassis synchronization */ + if (is_early_uv_system()) + return; if (!determine_cpu_tsc_frequencies(true)) return; loops_per_jiffy = get_loops_per_jiffy(); |