On Mon, Jun 12, 2023 at 03:16:07PM +0000, Yafang Shao wrote:
> Add new functions and macros to get perf event names. These names are
> copied from tool/perf/util/{parse-events,evsel}.c, so that in the future we
> will have a good chance to use the same code.
>
> Suggested-by: Jiri Olsa <olsajiri@xxxxxxxxx>
> Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
> ---
> tools/bpf/bpftool/perf.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++
> tools/bpf/bpftool/perf.h | 11 +++++
> 2 files changed, 118 insertions(+)
> create mode 100644 tools/bpf/bpftool/perf.h
>
> diff --git a/tools/bpf/bpftool/perf.c b/tools/bpf/bpftool/perf.c
> index 9174344..fbdf88c 100644
> --- a/tools/bpf/bpftool/perf.c
> +++ b/tools/bpf/bpftool/perf.c
> @@ -18,6 +18,113 @@
> #include <bpf/bpf.h>
>
> #include "main.h"
> +#include "perf.h"
> +
> +static const char *perf_type_name[PERF_TYPE_MAX] = {
> + [PERF_TYPE_HARDWARE] = "hardware",
> + [PERF_TYPE_SOFTWARE] = "software",
> + [PERF_TYPE_TRACEPOINT] = "tracepoint",
> + [PERF_TYPE_HW_CACHE] = "hw-cache",
> + [PERF_TYPE_RAW] = "raw",
> + [PERF_TYPE_BREAKPOINT] = "breakpoint",
> +};
> +
> +const char *event_symbols_hw[PERF_COUNT_HW_MAX] = {
> + [PERF_COUNT_HW_CPU_CYCLES] = "cpu-cycles",
> + [PERF_COUNT_HW_INSTRUCTIONS] = "instructions",
> + [PERF_COUNT_HW_CACHE_REFERENCES] = "cache-references",
> + [PERF_COUNT_HW_CACHE_MISSES] = "cache-misses",
> + [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "branch-instructions",
> + [PERF_COUNT_HW_BRANCH_MISSES] = "branch-misses",
> + [PERF_COUNT_HW_BUS_CYCLES] = "bus-cycles",
> + [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = "stalled-cycles-frontend",
> + [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = "stalled-cycles-backend",
> + [PERF_COUNT_HW_REF_CPU_CYCLES] = "ref-cycles",
> +};
> +
> +const char *event_symbols_sw[PERF_COUNT_SW_MAX] = {
> + [PERF_COUNT_SW_CPU_CLOCK] = "cpu-clock",
> + [PERF_COUNT_SW_TASK_CLOCK] = "task-clock",
> + [PERF_COUNT_SW_PAGE_FAULTS] = "page-faults",
> + [PERF_COUNT_SW_CONTEXT_SWITCHES] = "context-switches",
> + [PERF_COUNT_SW_CPU_MIGRATIONS] = "cpu-migrations",
> + [PERF_COUNT_SW_PAGE_FAULTS_MIN] = "minor-faults",
> + [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = "major-faults",
> + [PERF_COUNT_SW_ALIGNMENT_FAULTS] = "alignment-faults",
> + [PERF_COUNT_SW_EMULATION_FAULTS] = "emulation-faults",
> + [PERF_COUNT_SW_DUMMY] = "dummy",
> + [PERF_COUNT_SW_BPF_OUTPUT] = "bpf-output",
> + [PERF_COUNT_SW_CGROUP_SWITCHES] = "cgroup-switches",
> +};
> +
> +const char *evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] = {
> + [PERF_COUNT_HW_CACHE_L1D] = "L1-dcache",
> + [PERF_COUNT_HW_CACHE_L1I] = "L1-icache",
> + [PERF_COUNT_HW_CACHE_LL] = "LLC",
> + [PERF_COUNT_HW_CACHE_DTLB] = "dTLB",
> + [PERF_COUNT_HW_CACHE_ITLB] = "iTLB",
> + [PERF_COUNT_HW_CACHE_BPU] = "branch",
> + [PERF_COUNT_HW_CACHE_NODE] = "node",
> +};
> +
> +const char *evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] = {
> + [PERF_COUNT_HW_CACHE_OP_READ] = "load",
> + [PERF_COUNT_HW_CACHE_OP_WRITE] = "store",
> + [PERF_COUNT_HW_CACHE_OP_PREFETCH] = "prefetch",
> +};
> +
> +const char *evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
> + [PERF_COUNT_HW_CACHE_RESULT_ACCESS] = "refs",
> + [PERF_COUNT_HW_CACHE_RESULT_MISS] = "misses",
> +};
names lok good to me, thanks
jirka
> +
> +const char *perf_type_str(enum perf_type_id t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(perf_type_name))
> + return NULL;
> +
> + return perf_type_name[t];
> +}
> +
> +const char *perf_hw_str(enum perf_hw_id t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(event_symbols_hw))
> + return NULL;
> +
> + return event_symbols_hw[t];
> +}
> +
> +const char *perf_hw_cache_str(enum perf_hw_cache_id t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(evsel__hw_cache))
> + return NULL;
> +
> + return evsel__hw_cache[t];
> +}
> +
> +const char *perf_hw_cache_op_str(enum perf_hw_cache_op_id t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(evsel__hw_cache_op))
> + return NULL;
> +
> + return evsel__hw_cache_op[t];
> +}
> +
> +const char *perf_hw_cache_op_result_str(enum perf_hw_cache_op_result_id t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(evsel__hw_cache_result))
> + return NULL;
> +
> + return evsel__hw_cache_result[t];
> +}
> +
> +const char *perf_sw_str(enum perf_sw_ids t)
> +{
> + if (t < 0 || t >= ARRAY_SIZE(event_symbols_sw))
> + return NULL;
> +
> + return event_symbols_sw[t];
> +}
>
> /* 0: undecided, 1: supported, 2: not supported */
> static int perf_query_supported;
> diff --git a/tools/bpf/bpftool/perf.h b/tools/bpf/bpftool/perf.h
> new file mode 100644
> index 0000000..3fd7e42
> --- /dev/null
> +++ b/tools/bpf/bpftool/perf.h
> @@ -0,0 +1,11 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/* Copyright (C) 2023 Yafang Shao <laoar.shao@xxxxxxxxx> */
> +
> +#include <linux/perf_event.h>
> +
> +const char *perf_type_str(enum perf_type_id t);
> +const char *perf_hw_str(enum perf_hw_id t);
> +const char *perf_hw_cache_str(enum perf_hw_cache_id t);
> +const char *perf_hw_cache_op_str(enum perf_hw_cache_op_id t);
> +const char *perf_hw_cache_op_result_str(enum perf_hw_cache_op_result_id t);
> +const char *perf_sw_str(enum perf_sw_ids t);
> --
> 1.8.3.1
>
