From: kan.liang@linux.intel.com
To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
namhyung@kernel.org, tglx@linutronix.de,
dave.hansen@linux.intel.com, irogers@google.com,
adrian.hunter@intel.com, jolsa@kernel.org,
alexander.shishkin@linux.intel.com, linux-kernel@vger.kernel.org
Cc: dapeng1.mi@linux.intel.com, ak@linux.intel.com,
zide.chen@intel.com, mark.rutland@arm.com, broonie@kernel.org,
ravi.bangoria@amd.com, eranian@google.com,
Kan Liang <kan.liang@linux.intel.com>
Subject: [POC PATCH 15/17] tools headers: Sync with the kernel sources
Date: Fri, 15 Aug 2025 14:34:33 -0700 [thread overview]
Message-ID: <20250815213435.1702022-16-kan.liang@linux.intel.com> (raw)
In-Reply-To: <20250815213435.1702022-1-kan.liang@linux.intel.com>
From: Kan Liang <kan.liang@linux.intel.com>
Update include/uapi/linux/perf_event.h and
arch/x86/include/uapi/asm/perf_regs.h to support extended regs.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
tools/arch/x86/include/uapi/asm/perf_regs.h | 44 ++++++++++++++++++-
tools/include/uapi/linux/perf_event.h | 47 ++++++++++++++++++---
2 files changed, 84 insertions(+), 7 deletions(-)
diff --git a/tools/arch/x86/include/uapi/asm/perf_regs.h b/tools/arch/x86/include/uapi/asm/perf_regs.h
index 7c9d2bb3833b..4d88cb18acb9 100644
--- a/tools/arch/x86/include/uapi/asm/perf_regs.h
+++ b/tools/arch/x86/include/uapi/asm/perf_regs.h
@@ -27,11 +27,34 @@ enum perf_event_x86_regs {
PERF_REG_X86_R13,
PERF_REG_X86_R14,
PERF_REG_X86_R15,
+ /* Extended GPRs (EGPRs) */
+ PERF_REG_X86_R16,
+ PERF_REG_X86_R17,
+ PERF_REG_X86_R18,
+ PERF_REG_X86_R19,
+ PERF_REG_X86_R20,
+ PERF_REG_X86_R21,
+ PERF_REG_X86_R22,
+ PERF_REG_X86_R23,
+ PERF_REG_X86_R24,
+ PERF_REG_X86_R25,
+ PERF_REG_X86_R26,
+ PERF_REG_X86_R27,
+ PERF_REG_X86_R28,
+ PERF_REG_X86_R29,
+ PERF_REG_X86_R30,
+ PERF_REG_X86_R31,
/* These are the limits for the GPRs. */
PERF_REG_X86_32_MAX = PERF_REG_X86_GS + 1,
- PERF_REG_X86_64_MAX = PERF_REG_X86_R15 + 1,
+ PERF_REG_X86_64_MAX = PERF_REG_X86_R31 + 1,
- /* These all need two bits set because they are 128bit */
+ PERF_REG_X86_SSP,
+ PERF_REG_MISC_MAX = PERF_REG_X86_SSP + 1,
+
+ /*
+ * These all need two bits set because they are 128bit.
+ * These are only available when !PERF_SAMPLE_REGS_ABI_SIMD
+ */
PERF_REG_X86_XMM0 = 32,
PERF_REG_X86_XMM1 = 34,
PERF_REG_X86_XMM2 = 36,
@@ -55,4 +78,21 @@ enum perf_event_x86_regs {
#define PERF_REG_EXTENDED_MASK (~((1ULL << PERF_REG_X86_XMM0) - 1))
+#define PERF_X86_EGPRS_MASK GENMASK_ULL(PERF_REG_X86_R31, PERF_REG_X86_R16)
+
+#define PERF_X86_SIMD_PRED_REGS_MAX 8
+#define PERF_X86_SIMD_PRED_MASK GENMASK(PERF_X86_SIMD_PRED_REGS_MAX - 1, 0)
+#define PERF_X86_SIMD_VEC_REGS_MAX 32
+#define PERF_X86_SIMD_VEC_MASK GENMASK_ULL(PERF_X86_SIMD_VEC_REGS_MAX - 1, 0)
+
+#define PERF_X86_H16ZMM_BASE 16
+
+#define PERF_X86_OPMASK_QWORDS 1
+#define PERF_X86_XMM_QWORDS 2
+#define PERF_X86_YMM_QWORDS 4
+#define PERF_X86_YMMH_QWORDS (PERF_X86_YMM_QWORDS / 2)
+#define PERF_X86_ZMM_QWORDS 8
+#define PERF_X86_ZMMH_QWORDS (PERF_X86_ZMM_QWORDS / 2)
+#define PERF_X86_SIMD_QWORDS_MAX PERF_X86_ZMM_QWORDS
+
#endif /* _ASM_X86_PERF_REGS_H */
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 78a362b80027..2e9b16acbed6 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -313,9 +313,10 @@ enum {
* Values to determine ABI of the registers dump.
*/
enum perf_sample_regs_abi {
- PERF_SAMPLE_REGS_ABI_NONE = 0,
- PERF_SAMPLE_REGS_ABI_32 = 1,
- PERF_SAMPLE_REGS_ABI_64 = 2,
+ PERF_SAMPLE_REGS_ABI_NONE = 0x00,
+ PERF_SAMPLE_REGS_ABI_32 = 0x01,
+ PERF_SAMPLE_REGS_ABI_64 = 0x02,
+ PERF_SAMPLE_REGS_ABI_SIMD = 0x04,
};
/*
@@ -382,6 +383,7 @@ enum perf_event_read_format {
#define PERF_ATTR_SIZE_VER6 120 /* Add: aux_sample_size */
#define PERF_ATTR_SIZE_VER7 128 /* Add: sig_data */
#define PERF_ATTR_SIZE_VER8 136 /* Add: config3 */
+#define PERF_ATTR_SIZE_VER9 168 /* Add: sample_simd_{pred,vec}_reg_* */
/*
* 'struct perf_event_attr' contains various attributes that define
@@ -543,6 +545,25 @@ struct perf_event_attr {
__u64 sig_data;
__u64 config3; /* extension of config2 */
+
+
+ /*
+ * Defines set of SIMD registers to dump on samples.
+ * The sample_simd_regs_enabled !=0 implies the
+ * set of SIMD registers is used to config all SIMD registers.
+ * If !sample_simd_regs_enabled, sample_regs_XXX may be used to
+ * config some SIMD registers on X86.
+ */
+ union {
+ __u16 sample_simd_regs_enabled;
+ __u16 sample_simd_pred_reg_qwords;
+ };
+ __u32 sample_simd_pred_reg_intr;
+ __u32 sample_simd_pred_reg_user;
+ __u16 sample_simd_vec_reg_qwords;
+ __u64 sample_simd_vec_reg_intr;
+ __u64 sample_simd_vec_reg_user;
+ __u32 __reserved_4;
};
/*
@@ -1016,7 +1037,15 @@ enum perf_event_type {
* } && PERF_SAMPLE_BRANCH_STACK
*
* { u64 abi; # enum perf_sample_regs_abi
- * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER
+ * u64 regs[weight(mask)];
+ * struct {
+ * u16 nr_vectors;
+ * u16 vector_qwords;
+ * u16 nr_pred;
+ * u16 pred_qwords;
+ * u64 data[nr_vectors * vector_qwords + nr_pred * pred_qwords];
+ * } && (abi & PERF_SAMPLE_REGS_ABI_SIMD)
+ * } && PERF_SAMPLE_REGS_USER
*
* { u64 size;
* char data[size];
@@ -1043,7 +1072,15 @@ enum perf_event_type {
* { u64 data_src; } && PERF_SAMPLE_DATA_SRC
* { u64 transaction; } && PERF_SAMPLE_TRANSACTION
* { u64 abi; # enum perf_sample_regs_abi
- * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR
+ * u64 regs[weight(mask)];
+ * struct {
+ * u16 nr_vectors;
+ * u16 vector_qwords;
+ * u16 nr_pred;
+ * u16 pred_qwords;
+ * u64 data[nr_vectors * vector_qwords + nr_pred * pred_qwords];
+ * } && (abi & PERF_SAMPLE_REGS_ABI_SIMD)
+ * } && PERF_SAMPLE_REGS_INTR
* { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR
* { u64 cgroup;} && PERF_SAMPLE_CGROUP
* { u64 data_page_size;} && PERF_SAMPLE_DATA_PAGE_SIZE
--
2.38.1
next prev parent reply other threads:[~2025-08-15 21:35 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-15 21:34 [PATCH V3 00/17] Support vector and more extended registers in perf kan.liang
2025-08-15 21:34 ` [PATCH V3 01/17] perf/x86: Use x86_perf_regs in the x86 nmi handler kan.liang
2025-08-15 21:34 ` [PATCH V3 02/17] perf/x86: Setup the regs data kan.liang
2025-08-15 21:34 ` [PATCH V3 03/17] x86/fpu/xstate: Add xsaves_nmi kan.liang
2025-08-15 21:34 ` [PATCH V3 04/17] perf: Move has_extended_regs() to header file kan.liang
2025-08-15 21:34 ` [PATCH V3 05/17] perf/x86: Support XMM register for non-PEBS and REGS_USER kan.liang
2025-08-19 13:39 ` Peter Zijlstra
2025-08-19 15:55 ` Liang, Kan
2025-08-20 9:46 ` Mi, Dapeng
2025-08-20 18:03 ` Liang, Kan
2025-08-21 1:00 ` Mi, Dapeng
2025-08-15 21:34 ` [PATCH V3 06/17] perf: Support SIMD registers kan.liang
2025-08-20 9:55 ` Mi, Dapeng
2025-08-20 18:08 ` Liang, Kan
2025-08-15 21:34 ` [PATCH V3 07/17] perf/x86: Move XMM to sample_simd_vec_regs kan.liang
2025-08-15 21:34 ` [PATCH V3 08/17] perf/x86: Add YMM into sample_simd_vec_regs kan.liang
2025-08-20 9:59 ` Mi, Dapeng
2025-08-20 18:10 ` Liang, Kan
2025-08-15 21:34 ` [PATCH V3 09/17] perf/x86: Add ZMM " kan.liang
2025-08-15 21:34 ` [PATCH V3 10/17] perf/x86: Add OPMASK into sample_simd_pred_reg kan.liang
2025-08-15 21:34 ` [PATCH V3 11/17] perf/x86: Add eGPRs into sample_regs kan.liang
2025-08-20 10:01 ` Mi, Dapeng
2025-08-15 21:34 ` [PATCH V3 12/17] perf/x86: Add SSP " kan.liang
2025-08-15 21:34 ` [PATCH V3 13/17] perf/x86/intel: Enable PERF_PMU_CAP_SIMD_REGS kan.liang
2025-08-15 21:34 ` [POC PATCH 14/17] perf/x86/regs: Only support legacy regs for the PT and PERF_REGS_MASK for now kan.liang
2025-08-25 9:07 ` Adrian Hunter
2025-08-15 21:34 ` kan.liang [this message]
2025-08-15 21:34 ` [POC PATCH 16/17] perf parse-regs: Support the new SIMD format kan.liang
2025-08-20 10:04 ` Mi, Dapeng
2025-08-20 18:18 ` Liang, Kan
2025-08-21 3:35 ` Mi, Dapeng
2025-08-15 21:34 ` [POC PATCH 17/17] perf regs: Support the PERF_SAMPLE_REGS_ABI_SIMD kan.liang
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