// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/perf_event.h>
#include "util/evsel_fprintf.h"
#include "util/pmu.h"
#include "util/pmus.h"
#include "trace-event.h"
struct bit_names {
int bit;
const char *name;
};
static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits)
{
bool first_bit = true;
int i = 0;
do {
if (value & bits[i].bit) {
buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name);
first_bit = false;
}
} while (bits[++i].name != NULL);
}
static void __p_sample_type(char *buf, size_t size, u64 value)
{
#define bit_name(n) { PERF_SAMPLE_##n, #n }
struct bit_names bits[] = {
bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
bit_name(WEIGHT), bit_name(PHYS_ADDR), bit_name(AUX),
bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), bit_name(CODE_PAGE_SIZE),
bit_name(WEIGHT_STRUCT),
{ .name = NULL, }
};
#undef bit_name
__p_bits(buf, size, value, bits);
}
static void __p_branch_sample_type(char *buf, size_t size, u64 value)
{
#define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n }
struct bit_names bits[] = {
bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY),
bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL),
bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX),
bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP),
bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES),
bit_name(TYPE_SAVE), bit_name(HW_INDEX), bit_name(PRIV_SAVE),
bit_name(COUNTERS),
{ .name = NULL, }
};
#undef bit_name
__p_bits(buf, size, value, bits);
}
static void __p_read_format(char *buf, size_t size, u64 value)
{
#define bit_name(n) { PERF_FORMAT_##n, #n }
struct bit_names bits[] = {
bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
bit_name(ID), bit_name(GROUP), bit_name(LOST),
{ .name = NULL, }
};
#undef bit_name
__p_bits(buf, size, value, bits);
}
#define ENUM_ID_TO_STR_CASE(x) case x: return (#x);
static const char *stringify_perf_type_id(struct perf_pmu *pmu, u32 type)
{
if (pmu)
return pmu->name;
switch (type) {
ENUM_ID_TO_STR_CASE(PERF_TYPE_HARDWARE)
ENUM_ID_TO_STR_CASE(PERF_TYPE_SOFTWARE)
ENUM_ID_TO_STR_CASE(PERF_TYPE_TRACEPOINT)
ENUM_ID_TO_STR_CASE(PERF_TYPE_HW_CACHE)
ENUM_ID_TO_STR_CASE(PERF_TYPE_RAW)
ENUM_ID_TO_STR_CASE(PERF_TYPE_BREAKPOINT)
default:
return NULL;
}
}
static const char *stringify_perf_hw_id(u64 value)
{
switch (value) {
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CPU_CYCLES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_INSTRUCTIONS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_REFERENCES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_MISSES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_MISSES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BUS_CYCLES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_FRONTEND)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_BACKEND)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_REF_CPU_CYCLES)
default:
return NULL;
}
}
static const char *stringify_perf_hw_cache_id(u64 value)
{
switch (value) {
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1D)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1I)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_LL)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_DTLB)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_ITLB)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_BPU)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_NODE)
default:
return NULL;
}
}
static const char *stringify_perf_hw_cache_op_id(u64 value)
{
switch (value) {
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_READ)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_WRITE)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_PREFETCH)
default:
return NULL;
}
}
static const char *stringify_perf_hw_cache_op_result_id(u64 value)
{
switch (value) {
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_ACCESS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_MISS)
default:
return NULL;
}
}
static const char *stringify_perf_sw_id(u64 value)
{
switch (value) {
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_CLOCK)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_TASK_CLOCK)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CONTEXT_SWITCHES)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_MIGRATIONS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MIN)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MAJ)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_ALIGNMENT_FAULTS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_EMULATION_FAULTS)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_DUMMY)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_BPF_OUTPUT)
ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CGROUP_SWITCHES)
default:
return NULL;
}
}
#undef ENUM_ID_TO_STR_CASE
#define PRINT_ID(_s, _f) \
do { \
const char *__s = _s; \
if (__s == NULL) \
snprintf(buf, size, _f, value); \
else \
snprintf(buf, size, _f" (%s)", value, __s); \
} while (0)
#define print_id_unsigned(_s) PRINT_ID(_s, "%"PRIu64)
#define print_id_hex(_s) PRINT_ID(_s, "%#"PRIx64)
static void __p_type_id(struct perf_pmu *pmu, char *buf, size_t size, u64 value)
{
print_id_unsigned(stringify_perf_type_id(pmu, value));
}
static void __p_config_hw_id(char *buf, size_t size, u64 value)
{
print_id_hex(stringify_perf_hw_id(value));
}
static void __p_config_sw_id(char *buf, size_t size, u64 value)
{
print_id_hex(stringify_perf_sw_id(value));
}
static void __p_config_hw_cache_id(char *buf, size_t size, u64 value)
{
const char *hw_cache_str = stringify_perf_hw_cache_id(value & 0xff);
const char *hw_cache_op_str =
stringify_perf_hw_cache_op_id((value & 0xff00) >> 8);
const char *hw_cache_op_result_str =
stringify_perf_hw_cache_op_result_id((value & 0xff0000) >> 16);
if (hw_cache_str == NULL || hw_cache_op_str == NULL ||
hw_cache_op_result_str == NULL) {
snprintf(buf, size, "%#"PRIx64, value);
} else {
snprintf(buf, size, "%#"PRIx64" (%s | %s | %s)", value,
hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
}
}
#ifdef HAVE_LIBTRACEEVENT
static void __p_config_tracepoint_id(char *buf, size_t size, u64 value)
{
char *str = tracepoint_id_to_name(value);
print_id_hex(str);
free(str);
}
#endif
static void __p_config_id(struct perf_pmu *pmu, char *buf, size_t size, u32 type, u64 value)
{
const char *name = perf_pmu__name_from_config(pmu, value);
if (name) {
print_id_hex(name);
return;
}
switch (type) {
case PERF_TYPE_HARDWARE:
return __p_config_hw_id(buf, size, value);
case PERF_TYPE_SOFTWARE:
return __p_config_sw_id(buf, size, value);
case PERF_TYPE_HW_CACHE:
return __p_config_hw_cache_id(buf, size, value);
case PERF_TYPE_TRACEPOINT:
#ifdef HAVE_LIBTRACEEVENT
return __p_config_tracepoint_id(buf, size, value);
#endif
case PERF_TYPE_RAW:
case PERF_TYPE_BREAKPOINT:
default:
snprintf(buf, size, "%#"PRIx64, value);
return;
}
}
#define BUF_SIZE 1024
#define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
#define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
#define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
#define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val)
#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
#define p_read_format(val) __p_read_format(buf, BUF_SIZE, val)
#define p_type_id(val) __p_type_id(pmu, buf, BUF_SIZE, val)
#define p_config_id(val) __p_config_id(pmu, buf, BUF_SIZE, attr->type, val)
#define PRINT_ATTRn(_n, _f, _p, _a) \
do { \
if (_a || attr->_f) { \
_p(attr->_f); \
ret += attr__fprintf(fp, _n, buf, priv);\
} \
} while (0)
#define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p, false)
int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
attr__fprintf_f attr__fprintf, void *priv)
{
struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
char buf[BUF_SIZE];
int ret = 0;
PRINT_ATTRn("type", type, p_type_id, true);
PRINT_ATTRf(size, p_unsigned);
PRINT_ATTRn("config", config, p_config_id, true);
PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned, false);
PRINT_ATTRf(sample_type, p_sample_type);
PRINT_ATTRf(read_format, p_read_format);
PRINT_ATTRf(disabled, p_unsigned);
PRINT_ATTRf(inherit, p_unsigned);
PRINT_ATTRf(pinned, p_unsigned);
PRINT_ATTRf(exclusive, p_unsigned);
PRINT_ATTRf(exclude_user, p_unsigned);
PRINT_ATTRf(exclude_kernel, p_unsigned);
PRINT_ATTRf(exclude_hv, p_unsigned);
PRINT_ATTRf(exclude_idle, p_unsigned);
PRINT_ATTRf(mmap, p_unsigned);
PRINT_ATTRf(comm, p_unsigned);
PRINT_ATTRf(freq, p_unsigned);
PRINT_ATTRf(inherit_stat, p_unsigned);
PRINT_ATTRf(enable_on_exec, p_unsigned);
PRINT_ATTRf(task, p_unsigned);
PRINT_ATTRf(watermark, p_unsigned);
PRINT_ATTRf(precise_ip, p_unsigned);
PRINT_ATTRf(mmap_data, p_unsigned);
PRINT_ATTRf(sample_id_all, p_unsigned);
PRINT_ATTRf(exclude_host, p_unsigned);
PRINT_ATTRf(exclude_guest, p_unsigned);
PRINT_ATTRf(exclude_callchain_kernel, p_unsigned);
PRINT_ATTRf(exclude_callchain_user, p_unsigned);
PRINT_ATTRf(mmap2, p_unsigned);
PRINT_ATTRf(comm_exec, p_unsigned);
PRINT_ATTRf(use_clockid, p_unsigned);
PRINT_ATTRf(context_switch, p_unsigned);
PRINT_ATTRf(write_backward, p_unsigned);
PRINT_ATTRf(namespaces, p_unsigned);
PRINT_ATTRf(ksymbol, p_unsigned);
PRINT_ATTRf(bpf_event, p_unsigned);
PRINT_ATTRf(aux_output, p_unsigned);
PRINT_ATTRf(cgroup, p_unsigned);
PRINT_ATTRf(text_poke, p_unsigned);
PRINT_ATTRf(build_id, p_unsigned);
PRINT_ATTRf(inherit_thread, p_unsigned);
PRINT_ATTRf(remove_on_exec, p_unsigned);
PRINT_ATTRf(sigtrap, p_unsigned);
PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned, false);
PRINT_ATTRf(bp_type, p_unsigned);
PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex, false);
PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex, false);
PRINT_ATTRf(branch_sample_type, p_branch_sample_type);
PRINT_ATTRf(sample_regs_user, p_hex);
PRINT_ATTRf(sample_stack_user, p_unsigned);
PRINT_ATTRf(clockid, p_signed);
PRINT_ATTRf(sample_regs_intr, p_hex);
PRINT_ATTRf(aux_watermark, p_unsigned);
PRINT_ATTRf(sample_max_stack, p_unsigned);
PRINT_ATTRf(aux_sample_size, p_unsigned);
PRINT_ATTRf(sig_data, p_unsigned);
return ret;
}
Codebase Browser
linux