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-rw-r--r--module/zcommon/simd_stat.c189
-rw-r--r--module/zcommon/zfs_prop.c6
2 files changed, 195 insertions, 0 deletions
diff --git a/module/zcommon/simd_stat.c b/module/zcommon/simd_stat.c
new file mode 100644
index 000000000..538f8317a
--- /dev/null
+++ b/module/zcommon/simd_stat.c
@@ -0,0 +1,189 @@
+/*
+ * 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
+#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());
+#ifdef __x86__
+ 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
diff --git a/module/zcommon/zfs_prop.c b/module/zcommon/zfs_prop.c
index 10ac13a89..1206210a9 100644
--- a/module/zcommon/zfs_prop.c
+++ b/module/zcommon/zfs_prop.c
@@ -41,6 +41,7 @@
#include <sys/zfs_ioctl.h>
#include <sys/zfs_znode.h>
#include <sys/dsl_crypt.h>
+#include <sys/simd.h>
#include "zfs_prop.h"
#include "zfs_deleg.h"
@@ -1074,6 +1075,9 @@ EXPORT_SYMBOL(zfs_kfpu_fpregs);
extern int __init zcommon_init(void);
extern void zcommon_fini(void);
+extern void simd_stat_init(void);
+extern void simd_stat_fini(void);
+
int __init
zcommon_init(void)
{
@@ -1082,6 +1086,7 @@ zcommon_init(void)
return (error);
fletcher_4_init();
+ simd_stat_init();
return (0);
}
@@ -1089,6 +1094,7 @@ zcommon_init(void)
void
zcommon_fini(void)
{
+ simd_stat_fini();
fletcher_4_fini();
kfpu_fini();
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 03:20:54 +0000