[PATCH 3/3] arm64: kernel: declare cpu_ops __read_mostly
From: Jisheng Zhang <hidden>
Date: 2016-08-10 18:19:50
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
cpu_ops is initialized once by cpu_read_ops(), and thereafter is mostly read in hot path, such as arm_cpuidle_suspend(). The fact that it is mostly read and not written to makes it candidates for __read_mostly declarations. Signed-off-by: Jisheng Zhang <redacted> --- arch/arm64/kernel/cpu_ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
index c7cfb8f..c1e4802 100644
--- a/arch/arm64/kernel/cpu_ops.c
+++ b/arch/arm64/kernel/cpu_ops.c@@ -28,7 +28,7 @@ extern const struct cpu_operations smp_spin_table_ops; extern const struct cpu_operations acpi_parking_protocol_ops; extern const struct cpu_operations cpu_psci_ops; -const struct cpu_operations *cpu_ops[NR_CPUS]; +const struct cpu_operations *cpu_ops[NR_CPUS] __read_mostly; static const struct cpu_operations *dt_supported_cpu_ops[] __initconst = { &smp_spin_table_ops,
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2.8.1