Subject: [V2 4/4] tools/perf: Add perf tools support to expose instruction and data address registers as part of extended regs

From: Athira Rajeev <[email-masked]>
Date: Thu, 30 Sep 2021 17:50:55 +0530

Patch enables presenting of Sampled Instruction Address Register (SIAR)
and Sampled Data Address Register (SDAR) SPRs as part of extended regsiters
for perf tool. Add these SPR's to sample_reg_mask in the tool side (to use
with -I? option).

Signed-off-by: Athira Rajeev <[email-masked]>
---
 tools/arch/powerpc/include/uapi/asm/perf_regs.h | 11 +++++++----
 tools/perf/arch/powerpc/include/perf_regs.h     |  2 ++
 tools/perf/arch/powerpc/util/perf_regs.c        |  2 ++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/tools/arch/powerpc/include/uapi/asm/perf_regs.h b/tools/arch/powerpc/include/uapi/asm/perf_regs.h
index fb1d8a9b4393..e2917710fdab 100644
--- a/tools/arch/powerpc/include/uapi/asm/perf_regs.h
+++ b/tools/arch/powerpc/include/uapi/asm/perf_regs.h
@@ -61,17 +61,19 @@ enum perf_event_powerpc_regs {
 	PERF_REG_POWERPC_PMC4,
 	PERF_REG_POWERPC_PMC5,
 	PERF_REG_POWERPC_PMC6,
+	PERF_REG_POWERPC_SDAR,
+	PERF_REG_POWERPC_SIAR,
 	/* Max mask value for interrupt regs w/o extended regs */
 	PERF_REG_POWERPC_MAX = PERF_REG_POWERPC_MMCRA + 1,
 	/* Max mask value for interrupt regs including extended regs */
-	PERF_REG_EXTENDED_MAX = PERF_REG_POWERPC_PMC6 + 1,
+	PERF_REG_EXTENDED_MAX = PERF_REG_POWERPC_SIAR + 1,
 };
 
 #define PERF_REG_PMU_MASK	((1ULL << PERF_REG_POWERPC_MAX) - 1)
 
 /*
  * PERF_REG_EXTENDED_MASK value for CPU_FTR_ARCH_300
- * includes 9 SPRS from MMCR0 to PMC6 excluding the
+ * includes 11 SPRS from MMCR0 to SIAR excluding the
  * unsupported SPRS MMCR3, SIER2 and SIER3.
  */
 #define PERF_REG_PMU_MASK_300	\
@@ -79,11 +81,12 @@ enum perf_event_powerpc_regs {
 	(1ul << PERF_REG_POWERPC_MMCR2) | (1ul << PERF_REG_POWERPC_PMC1) | \
 	(1ul << PERF_REG_POWERPC_PMC2) | (1ul << PERF_REG_POWERPC_PMC3) | \
 	(1ul << PERF_REG_POWERPC_PMC4) | (1ul << PERF_REG_POWERPC_PMC5) | \
-	(1ul << PERF_REG_POWERPC_PMC6))
+	(1ul << PERF_REG_POWERPC_PMC6) | (1ul << PERF_REG_POWERPC_SDAR) | \
+	(1ul << PERF_REG_POWERPC_SIAR))
 
 /*
  * PERF_REG_EXTENDED_MASK value for CPU_FTR_ARCH_31
- * includes 12 SPRs from MMCR0 to PMC6.
+ * includes 14 SPRs from MMCR0 to SIAR.
  */
 #define PERF_REG_PMU_MASK_31	\
 	(PERF_REG_PMU_MASK_300 | (1ul << PERF_REG_POWERPC_MMCR3) | \
diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h
index 04e5dc07e93f..93339d17acc4 100644
--- a/tools/perf/arch/powerpc/include/perf_regs.h
+++ b/tools/perf/arch/powerpc/include/perf_regs.h
@@ -77,6 +77,8 @@ static const char *reg_names[] = {
 	[PERF_REG_POWERPC_PMC4] = "pmc4",
 	[PERF_REG_POWERPC_PMC5] = "pmc5",
 	[PERF_REG_POWERPC_PMC6] = "pmc6",
+	[PERF_REG_POWERPC_SDAR] = "sdar",
+	[PERF_REG_POWERPC_SIAR] = "siar",
 };
 
 static inline const char *__perf_reg_name(int id)
diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c
index 8116a253f91f..8d07a78e742a 100644
--- a/tools/perf/arch/powerpc/util/perf_regs.c
+++ b/tools/perf/arch/powerpc/util/perf_regs.c
@@ -74,6 +74,8 @@ const struct sample_reg sample_reg_masks[] = {
 	SMPL_REG(pmc4, PERF_REG_POWERPC_PMC4),
 	SMPL_REG(pmc5, PERF_REG_POWERPC_PMC5),
 	SMPL_REG(pmc6, PERF_REG_POWERPC_PMC6),
+	SMPL_REG(sdar, PERF_REG_POWERPC_SDAR),
+	SMPL_REG(siar, PERF_REG_POWERPC_SIAR),
 	SMPL_REG_END
 };
 
-- 
2.30.1 (Apple Git-130)