From: Charlie Jenkins Date: Tue, 6 Aug 2024 22:01:24 +0000 (-0700) Subject: tools: Optimize ring buffer for riscv X-Git-Tag: v6.12-rc1~76^2~2^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=aa5736dc7aa4d6f0e5e4e4147d9aef42bb82deab;p=thirdparty%2Fkernel%2Flinux.git tools: Optimize ring buffer for riscv Now that the riscv tools tree supports optimized barriers, use them in the ring buffer. Signed-off-by: Charlie Jenkins Reviewed-by: Andrea Parri Link: https://lore.kernel.org/r/20240806-optimize_ring_buffer_read_riscv-v2-2-ca7e193ae198@rivosinc.com Signed-off-by: Palmer Dabbelt --- diff --git a/tools/include/linux/ring_buffer.h b/tools/include/linux/ring_buffer.h index 6c02617377c29..a74c397359c7e 100644 --- a/tools/include/linux/ring_buffer.h +++ b/tools/include/linux/ring_buffer.h @@ -55,7 +55,7 @@ static inline u64 ring_buffer_read_head(struct perf_event_mmap_page *base) * READ_ONCE() + smp_mb() pair. */ #if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__) || \ - defined(__ia64__) || defined(__sparc__) && defined(__arch64__) + defined(__ia64__) || defined(__sparc__) && defined(__arch64__) || defined(__riscv) return smp_load_acquire(&base->data_head); #else u64 head = READ_ONCE(base->data_head);