On Sat, Jun 24, 2023 at 12:49 AM Quentin Monnet <quentin@xxxxxxxxxxxxx> wrote:
>
> 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?
Right. Will add an explanation in the commit log in the next version.
>
> > +
> > +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>
--
Regards
Yafang
