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tools: Optimize ring buffer for riscv

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Now that the riscv tools tree supports optimized barriers, use them in
the ring buffer.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20240806-optimize_ring_buffer_read_riscv-v2-2-ca7e193ae198@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Charlie Jenkins 2024-08-06 15:01:24 -07:00 committed by Palmer Dabbelt
parent 6d74d178fe
commit aa5736dc7a
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1 changed files with 1 additions and 1 deletions
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tools/include/linux/ring_buffer.h
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@ -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);