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author | 2020-09-09 18:26:07 +0200 | |
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committer | 2020-09-09 18:26:48 +0200 | |
commit | 9ddb236f13594b34a12dacf69a5adca7a1aef35e (patch) | |
tree | 1dc1f6e54962a2e3ad3d56c894522cb4b1ddce93 /tools/perf/arch/powerpc/util/perf_regs.c | |
parent | ALSA: vx: vx_pcm: remove redundant assignment (diff) | |
parent | ALSA: hda/realtek - The Mic on a RedmiBook doesn't work (diff) | |
download | linux-dev-9ddb236f13594b34a12dacf69a5adca7a1aef35e.tar.xz linux-dev-9ddb236f13594b34a12dacf69a5adca7a1aef35e.zip |
Merge branch 'for-linus' into for-next
Back-merge to apply the tasklet conversion patches that are based
on the already applied tasklet API changes on 5.9-rc4.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'tools/perf/arch/powerpc/util/perf_regs.c')
-rw-r--r-- | tools/perf/arch/powerpc/util/perf_regs.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c index 0a5242900248..2b6d4704e3aa 100644 --- a/tools/perf/arch/powerpc/util/perf_regs.c +++ b/tools/perf/arch/powerpc/util/perf_regs.c @@ -6,9 +6,16 @@ #include "../../../util/perf_regs.h" #include "../../../util/debug.h" +#include "../../../util/event.h" +#include "../../../util/header.h" +#include "../../../perf-sys.h" +#include "utils_header.h" #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), SMPL_REG(r1, PERF_REG_POWERPC_R1), @@ -55,6 +62,12 @@ const struct sample_reg sample_reg_masks[] = { SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR), SMPL_REG(sier, PERF_REG_POWERPC_SIER), SMPL_REG(mmcra, PERF_REG_POWERPC_MMCRA), + 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 }; @@ -163,3 +176,45 @@ int arch_sdt_arg_parse_op(char *old_op, char **new_op) return SDT_ARG_VALID; } + +uint64_t arch__intr_reg_mask(void) +{ + struct perf_event_attr attr = { + .type = PERF_TYPE_HARDWARE, + .config = PERF_COUNT_HW_CPU_CYCLES, + .sample_type = PERF_SAMPLE_REGS_INTR, + .precise_ip = 1, + .disabled = 1, + .exclude_kernel = 1, + }; + int fd; + u32 version; + u64 extended_mask = 0, mask = PERF_REGS_MASK; + + /* + * Get the PVR value to set the extended + * mask specific to platform. + */ + 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; + + attr.sample_regs_intr = extended_mask; + attr.sample_period = 1; + event_attr_init(&attr); + + /* + * check if the pmu supports perf extended regs, before + * returning the register mask to sample. + */ + fd = sys_perf_event_open(&attr, 0, -1, -1, 0); + if (fd != -1) { + close(fd); + mask |= extended_mask; + } + return mask; +} |