mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 19:39:35 +03:00
1d84c9eb66
Evidently while reworking it on aarch64, I broke it on x86 and didn't notice. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rich Ercolani <rincebrain@gmail.com> Closes #16556
198 lines
6.4 KiB
C
198 lines
6.4 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or https://opensource.org/licenses/CDDL-1.0.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright 2024 Google, Inc. All rights reserved.
|
|
*/
|
|
#include <sys/zfs_context.h>
|
|
#include <sys/kstat.h>
|
|
#include <sys/simd.h>
|
|
|
|
|
|
#ifdef _KERNEL
|
|
#ifdef __linux__
|
|
#include <linux/simd.h>
|
|
#endif /* __linux__ */
|
|
kstat_t *simd_stat_kstat;
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef _KERNEL
|
|
/* Sometimes, we don't define these at all. */
|
|
#ifndef HAVE_KERNEL_FPU
|
|
#define HAVE_KERNEL_FPU (0)
|
|
#endif
|
|
#ifndef HAVE_UNDERSCORE_KERNEL_FPU
|
|
#define HAVE_UNDERSCORE_KERNEL_FPU (0)
|
|
#endif
|
|
|
|
#define SIMD_STAT_PRINT(s, feat, val) \
|
|
kmem_scnprintf(s + off, MAX(4095-off, 0), "%-16s\t%1d\n", feat, (val))
|
|
|
|
static int
|
|
simd_stat_kstat_data(char *buf, size_t size, void *data)
|
|
{
|
|
(void) data;
|
|
|
|
static char simd_stat_kstat_payload[4096] = {0};
|
|
static int off = 0;
|
|
#ifdef __linux__
|
|
if (off == 0) {
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"kfpu_allowed", kfpu_allowed());
|
|
#if defined(__x86_64__) || defined(__i386__)
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"kfpu", HAVE_KERNEL_FPU);
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"kfpu_internal", HAVE_KERNEL_FPU_INTERNAL);
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"__kernel_fpu", HAVE_UNDERSCORE_KERNEL_FPU);
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sse", zfs_sse_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sse2", zfs_sse2_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sse3", zfs_sse3_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"ssse3", zfs_ssse3_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sse41", zfs_sse4_1_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sse42", zfs_sse4_2_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx", zfs_avx_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx2", zfs_avx2_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512f", zfs_avx512f_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512cd", zfs_avx512cd_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512er", zfs_avx512er_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512pf", zfs_avx512pf_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512bw", zfs_avx512bw_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512dq", zfs_avx512dq_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512vl", zfs_avx512vl_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512ifma", zfs_avx512ifma_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"avx512vbmi", zfs_avx512vbmi_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"ymm", __ymm_enabled());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"zmm", __zmm_enabled());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"bmi1", zfs_bmi1_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"bmi2", zfs_bmi2_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"aes", zfs_aes_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"pclmulqdq", zfs_pclmulqdq_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"movbe", zfs_movbe_available());
|
|
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"osxsave", boot_cpu_has(X86_FEATURE_OSXSAVE));
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"xsaves", static_cpu_has(X86_FEATURE_XSAVES));
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"xsaveopt", static_cpu_has(X86_FEATURE_XSAVEOPT));
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"xsave", static_cpu_has(X86_FEATURE_XSAVE));
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"fxsr", static_cpu_has(X86_FEATURE_FXSR));
|
|
#endif /* __x86__ */
|
|
#if defined(__arm__) || defined(__aarch64__)
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"kernel_neon", HAVE_KERNEL_NEON);
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"kernel_mode_neon", CONFIG_KERNEL_MODE_NEON);
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"neon", zfs_neon_available());
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sha256", zfs_sha256_available());
|
|
#if defined(__aarch64__)
|
|
/*
|
|
* This technically can exist on 32b ARM but we don't
|
|
* define hooks to check for it and I didn't want to
|
|
* learn enough ARM ASM to add one.
|
|
*/
|
|
off += SIMD_STAT_PRINT(simd_stat_kstat_payload,
|
|
"sha512", zfs_sha512_available());
|
|
#endif /* __aarch64__ */
|
|
#endif /* __arm__ */
|
|
/* We want to short-circuit this on unsupported platforms. */
|
|
off += 1;
|
|
}
|
|
|
|
kmem_scnprintf(buf, MIN(off, size), "%s", simd_stat_kstat_payload);
|
|
#endif /* __linux__ */
|
|
return (0);
|
|
}
|
|
#endif /* _KERNEL */
|
|
|
|
void
|
|
simd_stat_init(void)
|
|
{
|
|
static boolean_t simd_stat_initialized = B_FALSE;
|
|
|
|
if (!simd_stat_initialized) {
|
|
#if defined(_KERNEL)
|
|
/* Install kstats for all implementations */
|
|
simd_stat_kstat = kstat_create("zfs", 0, "simd", "misc",
|
|
KSTAT_TYPE_RAW, 0, KSTAT_FLAG_VIRTUAL);
|
|
|
|
|
|
if (simd_stat_kstat != NULL) {
|
|
simd_stat_kstat->ks_data = (void*)(uintptr_t)1;
|
|
simd_stat_kstat->ks_ndata = 1;
|
|
simd_stat_kstat->ks_flags |= KSTAT_FLAG_NO_HEADERS;
|
|
kstat_set_raw_ops(simd_stat_kstat,
|
|
NULL,
|
|
simd_stat_kstat_data,
|
|
NULL);
|
|
kstat_install(simd_stat_kstat);
|
|
}
|
|
#endif /* _KERNEL */
|
|
}
|
|
/* Finish initialization */
|
|
simd_stat_initialized = B_TRUE;
|
|
}
|
|
|
|
void
|
|
simd_stat_fini(void)
|
|
{
|
|
#if defined(_KERNEL)
|
|
if (simd_stat_kstat != NULL) {
|
|
kstat_delete(simd_stat_kstat);
|
|
simd_stat_kstat = NULL;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef _KERNEL
|
|
EXPORT_SYMBOL(simd_stat_init);
|
|
EXPORT_SYMBOL(simd_stat_fini);
|
|
#endif
|