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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-11-30 18:18:06 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-06 16:12:26 +0100 |
| commit | 0b587c84e42151fc5a636c7cebf7b03b281dc672 (patch) | |
| tree | fd4c2ad66ab8c465d18a690c1494cd7a220f2c0a /arch/arm64/include/asm/cpufeature.h | |
| parent | arm64: capabilities: Use linear array for detection and verification (diff) | |
| download | linux-0b587c84e42151fc5a636c7cebf7b03b281dc672.tar.xz linux-0b587c84e42151fc5a636c7cebf7b03b281dc672.zip | |
arm64: capabilities: Batch cpu_enable callbacks
We use a stop_machine call for each available capability to
enable it on all the CPUs available at boot time. Instead
we could batch the cpu_enable callbacks to a single stop_machine()
call to save us some time.
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 7e2ec64aa414..0a15e2c55f1b 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -357,6 +357,9 @@ extern DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS); extern struct static_key_false cpu_hwcap_keys[ARM64_NCAPS]; extern struct static_key_false arm64_const_caps_ready; +#define for_each_available_cap(cap) \ + for_each_set_bit(cap, cpu_hwcaps, ARM64_NCAPS) + bool this_cpu_has_cap(unsigned int cap); static inline bool cpu_have_feature(unsigned int num) |