Commit 62b57e3d authored by Yafang Shao's avatar Yafang Shao Committed by Alexei Starovoitov
Browse files

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: default avatarJiri Olsa <olsajiri@gmail.com>
Signed-off-by: default avatarYafang Shao <laoar.shao@gmail.com>
Reviewed-by: default avatarQuentin Monnet <quentin@isovalent.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230709025630.3735-10-laoar.shao@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 1b715e1b

tools/bpf/bpftool/link.c

+67 −0
Original line number Diff line number Diff line
@@ -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;