bpftool: Add perf event names

Add new functions and macros to get perf event names. These names except
the perf_type_name are all 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@gmail.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230709025630.3735-10-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index a4f5a436777f0bc120eb4569085bfe9ec099507d..8e4d9176a6e8568dab6438ce908637837a4da819 100644 (file)
--- 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",
+};
+
+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;