perf tools powerpc: Add support for extended regs in power10

Added support for supported regs which are new in power10 ( MMCR3,
SIER2, SIER3 ) to sample_reg_mask in the tool side to use with `-I?`
option. Also added PVR check to send extended mask for power10 at kernel
while capturing extended regs in each sample.

Signed-off-by: Athira Jajeev <[email protected]>
Reviewed-by: Kajol Jain <[email protected]>
Reviewed-by: Ravi Bangoria <[email protected]>
Tested-by: Ravi Bangoria <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Michael Neuling <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: [email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: athira-rajeev

tools/arch/powerpc/include/uapi/asm/perf_regs.h

@@ -52,6 +52,9 @@ enum perf_event_powerpc_regs {
 	PERF_REG_POWERPC_MMCR0,
 	PERF_REG_POWERPC_MMCR1,
 	PERF_REG_POWERPC_MMCR2,
+	PERF_REG_POWERPC_MMCR3,
+	PERF_REG_POWERPC_SIER2,
+	PERF_REG_POWERPC_SIER3,
 	/* Max regs without the extended regs */
 	PERF_REG_POWERPC_MAX = PERF_REG_POWERPC_MMCRA + 1,
 };
@@ -60,6 +63,9 @@ enum perf_event_powerpc_regs {
 
 /* PERF_REG_EXTENDED_MASK value for CPU_FTR_ARCH_300 */
 #define PERF_REG_PMU_MASK_300   (((1ULL << (PERF_REG_POWERPC_MMCR2 + 1)) - 1) - PERF_REG_PMU_MASK)
+/* PERF_REG_EXTENDED_MASK value for CPU_FTR_ARCH_31 */
+#define PERF_REG_PMU_MASK_31   (((1ULL << (PERF_REG_POWERPC_SIER3 + 1)) - 1) - PERF_REG_PMU_MASK)
 
 #define PERF_REG_MAX_ISA_300   (PERF_REG_POWERPC_MMCR2 + 1)
+#define PERF_REG_MAX_ISA_31    (PERF_REG_POWERPC_SIER3 + 1)
 #endif /* _UAPI_ASM_POWERPC_PERF_REGS_H */

tools/perf/arch/powerpc/include/perf_regs.h

@@ -68,6 +68,9 @@ static const char *reg_names[] = {
 	[PERF_REG_POWERPC_MMCR0] = "mmcr0",
 	[PERF_REG_POWERPC_MMCR1] = "mmcr1",
 	[PERF_REG_POWERPC_MMCR2] = "mmcr2",
+	[PERF_REG_POWERPC_MMCR3] = "mmcr3",
+	[PERF_REG_POWERPC_SIER2] = "sier2",
+	[PERF_REG_POWERPC_SIER3] = "sier3",
 };
 
 static inline const char *perf_reg_name(int id)

tools/perf/arch/powerpc/util/perf_regs.c

@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 
 #define PVR_POWER9		0x004E
+#define PVR_POWER10		0x0080
 
 const struct sample_reg sample_reg_masks[] = {
 	SMPL_REG(r0, PERF_REG_POWERPC_R0),
@@ -64,6 +65,9 @@ const struct sample_reg sample_reg_masks[] = {
 	SMPL_REG(mmcr0, PERF_REG_POWERPC_MMCR0),
 	SMPL_REG(mmcr1, PERF_REG_POWERPC_MMCR1),
 	SMPL_REG(mmcr2, PERF_REG_POWERPC_MMCR2),
+	SMPL_REG(mmcr3, PERF_REG_POWERPC_MMCR3),
+	SMPL_REG(sier2, PERF_REG_POWERPC_SIER2),
+	SMPL_REG(sier3, PERF_REG_POWERPC_SIER3),
 	SMPL_REG_END
 };
 
@@ -194,6 +198,8 @@ uint64_t arch__intr_reg_mask(void)
 	version = (((mfspr(SPRN_PVR)) >>  16) & 0xFFFF);
 	if (version == PVR_POWER9)
 		extended_mask = PERF_REG_PMU_MASK_300;
+	else if (version == PVR_POWER10)
+		extended_mask = PERF_REG_PMU_MASK_31;
 	else
 		return mask;