On Wed, 10 Aug 2016 16:49:57 +0800 Jisheng Zhang wrote: > cpuidle_ops is initialized once by arm_cpuidle_read_ops() during > initialization, and thereafter is mostly read in 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 <[email protected]> > --- > arch/arm/kernel/cpuidle.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c > index 7dccc96..762e0929 100644 > --- a/arch/arm/kernel/cpuidle.c > +++ b/arch/arm/kernel/cpuidle.c > @@ -19,7 +19,7 @@ extern struct of_cpuidle_method __cpuidle_method_of_table[]; > static const struct of_cpuidle_method __cpuidle_method_of_table_sentinel > __used __section(__cpuidle_method_of_table_end); > > -static struct cpuidle_ops cpuidle_ops[NR_CPUS]; > +static struct cpuidle_ops cpuidle_ops[NR_CPUS] __read_mostly;
oops, I just found that "arm: apply more __ro_after_init" from Kees marked cpuidle_ops as __ro_after_init, that also meet my need, so let's drop my patch. Thanks, Jisheng
