From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PATCH v6 07/10] util/bufferiszero: Introduce biz_accel_fn typedef
Date: Wed, 24 Apr 2024 15:57:02 -0700 [thread overview]
Message-ID: <20240424225705.929812-8-richard.henderson@linaro.org> (raw)
In-Reply-To: <20240424225705.929812-1-richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
util/bufferiszero.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/util/bufferiszero.c b/util/bufferiszero.c
index c9a7ded016..eb8030a3f0 100644
--- a/util/bufferiszero.c
+++ b/util/bufferiszero.c
@@ -26,7 +26,8 @@
#include "qemu/bswap.h"
#include "host/cpuinfo.h"
-static bool (*buffer_is_zero_accel)(const void *, size_t);
+typedef bool (*biz_accel_fn)(const void *, size_t);
+static biz_accel_fn buffer_is_zero_accel;
static bool buffer_is_zero_int_lt256(const void *buf, size_t len)
{
@@ -178,13 +179,15 @@ buffer_zero_avx2(const void *buf, size_t len)
}
#endif /* CONFIG_AVX2_OPT */
+
+
static unsigned __attribute__((noinline))
select_accel_cpuinfo(unsigned info)
{
/* Array is sorted in order of algorithm preference. */
static const struct {
unsigned bit;
- bool (*fn)(const void *, size_t);
+ biz_accel_fn fn;
} all[] = {
#ifdef CONFIG_AVX2_OPT
{ CPUINFO_AVX2, buffer_zero_avx2 },
@@ -231,7 +234,7 @@ bool test_buffer_is_zero_next_accel(void)
#define INIT_ACCEL buffer_is_zero_int_ge256
#endif
-static bool (*buffer_is_zero_accel)(const void *, size_t) = INIT_ACCEL;
+static biz_accel_fn buffer_is_zero_accel = INIT_ACCEL;
bool buffer_is_zero_ool(const void *buf, size_t len)
{
--
2.34.1
next prev parent reply other threads:[~2024-04-24 22:58 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 22:56 [PATCH v6 00/10] Optimize buffer_is_zero Richard Henderson
2024-04-24 22:56 ` [PATCH v6 01/10] util/bufferiszero: Remove SSE4.1 variant Richard Henderson
2024-04-24 22:56 ` [PATCH v6 02/10] util/bufferiszero: Remove AVX512 variant Richard Henderson
2024-04-29 11:16 ` Daniel P. Berrangé
2024-04-29 11:29 ` Alexander Monakov
2024-04-24 22:56 ` [PATCH v6 03/10] util/bufferiszero: Reorganize for early test for acceleration Richard Henderson
2024-04-24 22:56 ` [PATCH v6 04/10] util/bufferiszero: Remove useless prefetches Richard Henderson
2024-04-24 22:57 ` [PATCH v6 05/10] util/bufferiszero: Optimize SSE2 and AVX2 variants Richard Henderson
2024-04-24 22:57 ` [PATCH v6 06/10] util/bufferiszero: Improve scalar variant Richard Henderson
2024-04-29 12:18 ` Philippe Mathieu-Daudé
2024-04-29 12:31 ` Richard Henderson
2024-04-29 13:21 ` Philippe Mathieu-Daudé
2024-04-24 22:57 ` Richard Henderson [this message]
2024-04-29 11:14 ` [PATCH v6 07/10] util/bufferiszero: Introduce biz_accel_fn typedef Philippe Mathieu-Daudé
2024-04-24 22:57 ` [PATCH v6 08/10] util/bufferiszero: Simplify test_buffer_is_zero_next_accel Richard Henderson
2024-04-29 11:05 ` Philippe Mathieu-Daudé
2024-04-24 22:57 ` [PATCH v6 09/10] util/bufferiszero: Add simd acceleration for aarch64 Richard Henderson
2024-04-29 11:06 ` Philippe Mathieu-Daudé
2024-04-29 12:45 ` Philippe Mathieu-Daudé
2024-04-24 22:57 ` [PATCH v6 10/10] tests/bench: Add bufferiszero-bench Richard Henderson
2024-04-29 11:12 ` Philippe Mathieu-Daudé
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