Messages in this thread | | | Date | Tue, 17 Oct 2023 11:35:44 +0100 | From | Mark Rutland <> | Subject | Re: [PATCH] arm64: Remove system_uses_lse_atomics() |
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On Tue, Oct 17, 2023 at 10:50:36AM +1000, Gavin Shan wrote: > There are two variants of system_uses_lse_atomics(), depending on > CONFIG_ARM64_LSE_ATOMICS. The function isn't called anywhere when > CONFIG_ARM64_LSE_ATOMICS is disabled. It can be directly replaced > by alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS) when the kernel > option is enabled. > > No need to keep system_uses_lse_atomics() and just remove it. > > Signed-off-by: Gavin Shan <gshan@redhat.com>
I had meant to remove this already, so:
Acked-by: Mark Rutland <mark.rutland@arm.com>
Mark.
> --- > arch/arm64/include/asm/lse.h | 9 +-------- > 1 file changed, 1 insertion(+), 8 deletions(-) > > diff --git a/arch/arm64/include/asm/lse.h b/arch/arm64/include/asm/lse.h > index cbbcdc35c4cd..3129a5819d0e 100644 > --- a/arch/arm64/include/asm/lse.h > +++ b/arch/arm64/include/asm/lse.h > @@ -16,14 +16,9 @@ > #include <asm/atomic_lse.h> > #include <asm/cpucaps.h> > > -static __always_inline bool system_uses_lse_atomics(void) > -{ > - return alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS); > -} > - > #define __lse_ll_sc_body(op, ...) \ > ({ \ > - system_uses_lse_atomics() ? \ > + alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS) ? \ > __lse_##op(__VA_ARGS__) : \ > __ll_sc_##op(__VA_ARGS__); \ > }) > @@ -34,8 +29,6 @@ static __always_inline bool system_uses_lse_atomics(void) > > #else /* CONFIG_ARM64_LSE_ATOMICS */ > > -static inline bool system_uses_lse_atomics(void) { return false; } > - > #define __lse_ll_sc_body(op, ...) __ll_sc_##op(__VA_ARGS__) > > #define ARM64_LSE_ATOMIC_INSN(llsc, lse) llsc > -- > 2.41.0 >
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