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| author | Daniel Thompson <daniel.thompson@linaro.org> | 2015-11-20 19:51:13 +0000 |
|---|---|---|
| committer | Daniel Thompson <daniel.thompson@linaro.org> | 2016-03-15 14:22:11 +0000 |
| commit | 563ff0286948e66af5c2eae069ec49527a371b41 (patch) | |
| tree | 97b76cd3e121d6e977f76adad099efa3eba9e424 /arch/arm64/kernel/smp.c | |
| parent | 67db8f587efaa1e93e2ff7105bbd66c1410b4641 (diff) | |
arm64: Add runtime NMI disable mode
For benchmarking...
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Diffstat (limited to 'arch/arm64/kernel/smp.c')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index e376c4c8582f..0c4637b30c04 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -334,6 +334,9 @@ void __init smp_cpus_done(unsigned int max_cpus) apply_alternatives_all(); } +early_param_on_off("nmi", "nonmi", enable_nmi, + CONFIG_USE_ICC_SYSREGS_FOR_IRQFLAGS); + void __init smp_prepare_boot_cpu(void) { cpuinfo_store_boot_cpu(); @@ -344,7 +347,8 @@ void __init smp_prepare_boot_cpu(void) * alternatives that cannot wait until interrupt handling * and/or scheduling is enabled. */ - apply_alternatives_early(); + if (enable_nmi) + apply_alternatives_early(); /* * Conditionally switch to GIC PMR for interrupt masking (this |