diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/arch/x86/include/perf_regs.h | 1 | ||||
| -rw-r--r-- | tools/perf/arch/x86/util/perf_regs.c | 28 |
2 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/include/perf_regs.h b/tools/perf/arch/x86/include/perf_regs.h index b7321337d100..b7cd91a9014f 100644 --- a/tools/perf/arch/x86/include/perf_regs.h +++ b/tools/perf/arch/x86/include/perf_regs.h @@ -9,6 +9,7 @@ void perf_regs_load(u64 *regs); #define PERF_REGS_MAX PERF_REG_X86_XMM_MAX +#define PERF_XMM_REGS_MASK (~((1ULL << PERF_REG_X86_XMM0) - 1)) #ifndef HAVE_ARCH_X86_64_SUPPORT #define PERF_REGS_MASK ((1ULL << PERF_REG_X86_32_MAX) - 1) #define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 diff --git a/tools/perf/arch/x86/util/perf_regs.c b/tools/perf/arch/x86/util/perf_regs.c index 71d7604dbf0b..7886ca5263e3 100644 --- a/tools/perf/arch/x86/util/perf_regs.c +++ b/tools/perf/arch/x86/util/perf_regs.c @@ -270,3 +270,31 @@ 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, + .sample_regs_intr = PERF_XMM_REGS_MASK, + .precise_ip = 1, + .disabled = 1, + .exclude_kernel = 1, + }; + int fd; + /* + * In an unnamed union, init it here to build on older gcc versions + */ + attr.sample_period = 1; + + event_attr_init(&attr); + + fd = sys_perf_event_open(&attr, 0, -1, -1, 0); + if (fd != -1) { + close(fd); + return (PERF_XMM_REGS_MASK | PERF_REGS_MASK); + } + + return PERF_REGS_MASK; +} |