2023-06-23 14:15 UTC+0000 ~ Yafang Shao <laoar.shao@xxxxxxxxx>
> 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/link.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 67 insertions(+)
>
> diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
> index 8461e6d..e5aeee3 100644
> --- a/tools/bpf/bpftool/link.c
> +++ b/tools/bpf/bpftool/link.c
> @@ -5,6 +5,7 @@
> #include <linux/err.h>
> #include <linux/netfilter.h>
> #include <linux/netfilter_arp.h>
> +#include <linux/perf_event.h>
> #include <net/if.h>
> #include <stdio.h>
> #include <unistd.h>
> @@ -19,6 +20,72 @@
> static struct hashmap *link_table;
> static struct dump_data dd = {};
>
> +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",
> +};
These ones (above) are not defined in perf, are they?
> +
> +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",
> +};
> +
> +#define perf_event_name(array, id) ({ \
> + const char *event_str = NULL; \
> + \
> + if ((id) >= 0 && (id) < ARRAY_SIZE(array)) \
> + event_str = array[id]; \
> + event_str; \
> +})
> +
> static int link_parse_fd(int *argc, char ***argv)
> {
> int fd;
Reviewed-by: Quentin Monnet <quentin@xxxxxxxxxxxxx>
