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![Yang Jihong](/assets/img/avatar_default.png)
When printing perf_event_attr, always display perf_event_attr config and its symbol to improve the readability of debugging information. Before: # perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true <SNIP> ------------------------------------------------------------ perf_event_attr: size 136 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 ------------------------------------------------------------ perf_event_attr: type 1 size 136 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6 ------------------------------------------------------------ perf_event_attr: type 2 size 136 config 0x143 { sample_period, sample_freq } 1 sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER read_format ID disabled 1 inherit 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7 ------------------------------------------------------------ perf_event_attr: type 3 size 136 config 0x10005 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9 ------------------------------------------------------------ perf_event_attr: type 4 size 136 config 0x101 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10 ------------------------------------------------------------ perf_event_attr: type 5 size 136 { sample_period, sample_freq } 1 sample_type IP|TID|TIME|CPU|IDENTIFIER read_format ID disabled 1 inherit 1 sample_id_all 1 exclude_guest 1 bp_type 3 { bp_len, config2 } 0x4 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11 <SNIP> After: # perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true <SNIP> ------------------------------------------------------------ perf_event_attr: type 0 (PERF_TYPE_HARDWARE) size 136 config 0 (PERF_COUNT_HW_CPU_CYCLES) { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 ------------------------------------------------------------ perf_event_attr: type 1 (PERF_TYPE_SOFTWARE) size 136 config 0 (PERF_COUNT_SW_CPU_CLOCK) { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6 ------------------------------------------------------------ perf_event_attr: type 2 (PERF_TYPE_TRACEPOINT) size 136 config 0x143 (sched:sched_switch) { sample_period, sample_freq } 1 sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER read_format ID disabled 1 inherit 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7 ------------------------------------------------------------ perf_event_attr: type 3 (PERF_TYPE_HW_CACHE) size 136 config 0x10005 (PERF_COUNT_HW_CACHE_RESULT_MISS | PERF_COUNT_HW_CACHE_OP_READ | PERF_COUNT_HW_CACHE_BPU) { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9 ------------------------------------------------------------ perf_event_attr: type 4 (PERF_TYPE_RAW) size 136 config 0x101 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID disabled 1 inherit 1 freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10 ------------------------------------------------------------ perf_event_attr: type 5 (PERF_TYPE_BREAKPOINT) size 136 config 0 { sample_period, sample_freq } 1 sample_type IP|TID|TIME|CPU|IDENTIFIER read_format ID disabled 1 inherit 1 sample_id_all 1 exclude_guest 1 bp_type 3 { bp_len, config2 } 0x4 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11 ------------------------------------------------------------ perf_event_attr: type 1 (PERF_TYPE_SOFTWARE) size 136 config 0x9 (PERF_COUNT_SW_DUMMY) { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER read_format ID inherit 1 mmap 1 comm 1 freq 1 task 1 sample_id_all 1 mmap2 1 comm_exec 1 ksymbol 1 bpf_event 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 12 <SNIP> Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: anshuman.khandual@arm.com Cc: mark.rutland@arm.com Cc: irogers@google.com Cc: jesussanp@google.com Cc: peterz@infradead.org Cc: acme@kernel.org Cc: jolsa@kernel.org Cc: alexander.shishkin@linux.intel.com Cc: mingo@redhat.com Link: https://lore.kernel.org/r/20230623054416.160858-5-yangjihong1@huawei.com [ fix perf import test by adding a dummy tracepoint_id__to_name() ] Signed-off-by: Namhyung Kim <namhyung@kernel.org>
327 lines
10 KiB
C
327 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/perf_event.h>
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#include "util/evsel_fprintf.h"
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#include "trace-event.h"
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struct bit_names {
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int bit;
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const char *name;
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};
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static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits)
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{
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bool first_bit = true;
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int i = 0;
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do {
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if (value & bits[i].bit) {
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buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name);
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first_bit = false;
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}
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} while (bits[++i].name != NULL);
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}
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static void __p_sample_type(char *buf, size_t size, u64 value)
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{
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#define bit_name(n) { PERF_SAMPLE_##n, #n }
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struct bit_names bits[] = {
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bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
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bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
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bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
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bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
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bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
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bit_name(WEIGHT), bit_name(PHYS_ADDR), bit_name(AUX),
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bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), bit_name(CODE_PAGE_SIZE),
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bit_name(WEIGHT_STRUCT),
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{ .name = NULL, }
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};
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#undef bit_name
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__p_bits(buf, size, value, bits);
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}
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static void __p_branch_sample_type(char *buf, size_t size, u64 value)
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{
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#define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n }
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struct bit_names bits[] = {
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bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY),
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bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL),
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bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX),
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bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP),
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bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES),
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bit_name(TYPE_SAVE), bit_name(HW_INDEX), bit_name(PRIV_SAVE),
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{ .name = NULL, }
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};
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#undef bit_name
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__p_bits(buf, size, value, bits);
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}
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static void __p_read_format(char *buf, size_t size, u64 value)
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{
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#define bit_name(n) { PERF_FORMAT_##n, #n }
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struct bit_names bits[] = {
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bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
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bit_name(ID), bit_name(GROUP), bit_name(LOST),
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{ .name = NULL, }
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};
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#undef bit_name
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__p_bits(buf, size, value, bits);
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}
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#define ENUM_ID_TO_STR_CASE(x) case x: return (#x);
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static const char *stringify_perf_type_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_TYPE_HARDWARE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_SOFTWARE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_TRACEPOINT)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_HW_CACHE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_RAW)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_BREAKPOINT)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CPU_CYCLES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_INSTRUCTIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_REFERENCES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_MISSES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_MISSES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BUS_CYCLES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_FRONTEND)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_BACKEND)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_REF_CPU_CYCLES)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1D)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1I)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_LL)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_DTLB)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_ITLB)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_BPU)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_NODE)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_op_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_READ)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_WRITE)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_PREFETCH)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_op_result_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_ACCESS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_MISS)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_sw_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_CLOCK)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_TASK_CLOCK)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CONTEXT_SWITCHES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_MIGRATIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MIN)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MAJ)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_ALIGNMENT_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_EMULATION_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_DUMMY)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_BPF_OUTPUT)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CGROUP_SWITCHES)
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default:
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return NULL;
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}
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}
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#undef ENUM_ID_TO_STR_CASE
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#define PRINT_ID(_s, _f) \
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do { \
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const char *__s = _s; \
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if (__s == NULL) \
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snprintf(buf, size, _f, value); \
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else \
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snprintf(buf, size, _f" (%s)", value, __s); \
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} while (0)
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#define print_id_unsigned(_s) PRINT_ID(_s, "%"PRIu64)
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#define print_id_hex(_s) PRINT_ID(_s, "%#"PRIx64)
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static void __p_type_id(char *buf, size_t size, u64 value)
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{
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print_id_unsigned(stringify_perf_type_id(value));
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}
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static void __p_config_hw_id(char *buf, size_t size, u64 value)
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{
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print_id_hex(stringify_perf_hw_id(value));
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}
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static void __p_config_sw_id(char *buf, size_t size, u64 value)
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{
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print_id_hex(stringify_perf_sw_id(value));
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}
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static void __p_config_hw_cache_id(char *buf, size_t size, u64 value)
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{
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const char *hw_cache_str = stringify_perf_hw_cache_id(value & 0xff);
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const char *hw_cache_op_str =
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stringify_perf_hw_cache_op_id((value & 0xff00) >> 8);
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const char *hw_cache_op_result_str =
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stringify_perf_hw_cache_op_result_id((value & 0xff0000) >> 16);
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if (hw_cache_str == NULL || hw_cache_op_str == NULL ||
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hw_cache_op_result_str == NULL) {
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snprintf(buf, size, "%#"PRIx64, value);
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} else {
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snprintf(buf, size, "%#"PRIx64" (%s | %s | %s)", value,
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hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
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}
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}
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#ifdef HAVE_LIBTRACEEVENT
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static void __p_config_tracepoint_id(char *buf, size_t size, u64 value)
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{
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char *str = tracepoint_id_to_name(value);
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print_id_hex(str);
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free(str);
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}
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#endif
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static void __p_config_id(char *buf, size_t size, u32 type, u64 value)
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{
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switch (type) {
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case PERF_TYPE_HARDWARE:
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return __p_config_hw_id(buf, size, value);
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case PERF_TYPE_SOFTWARE:
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return __p_config_sw_id(buf, size, value);
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case PERF_TYPE_HW_CACHE:
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return __p_config_hw_cache_id(buf, size, value);
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case PERF_TYPE_TRACEPOINT:
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#ifdef HAVE_LIBTRACEEVENT
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return __p_config_tracepoint_id(buf, size, value);
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#endif
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case PERF_TYPE_RAW:
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case PERF_TYPE_BREAKPOINT:
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default:
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snprintf(buf, size, "%#"PRIx64, value);
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return;
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}
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}
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#define BUF_SIZE 1024
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#define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
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#define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
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#define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
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#define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val)
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#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
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#define p_read_format(val) __p_read_format(buf, BUF_SIZE, val)
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#define p_type_id(val) __p_type_id(buf, BUF_SIZE, val)
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#define p_config_id(val) __p_config_id(buf, BUF_SIZE, attr->type, val)
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#define PRINT_ATTRn(_n, _f, _p, _a) \
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do { \
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if (_a || attr->_f) { \
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_p(attr->_f); \
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ret += attr__fprintf(fp, _n, buf, priv);\
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} \
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} while (0)
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#define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p, false)
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int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
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attr__fprintf_f attr__fprintf, void *priv)
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{
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char buf[BUF_SIZE];
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int ret = 0;
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PRINT_ATTRn("type", type, p_type_id, true);
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PRINT_ATTRf(size, p_unsigned);
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PRINT_ATTRn("config", config, p_config_id, true);
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PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned, false);
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PRINT_ATTRf(sample_type, p_sample_type);
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PRINT_ATTRf(read_format, p_read_format);
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PRINT_ATTRf(disabled, p_unsigned);
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PRINT_ATTRf(inherit, p_unsigned);
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PRINT_ATTRf(pinned, p_unsigned);
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PRINT_ATTRf(exclusive, p_unsigned);
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PRINT_ATTRf(exclude_user, p_unsigned);
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PRINT_ATTRf(exclude_kernel, p_unsigned);
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PRINT_ATTRf(exclude_hv, p_unsigned);
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PRINT_ATTRf(exclude_idle, p_unsigned);
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PRINT_ATTRf(mmap, p_unsigned);
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PRINT_ATTRf(comm, p_unsigned);
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PRINT_ATTRf(freq, p_unsigned);
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PRINT_ATTRf(inherit_stat, p_unsigned);
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PRINT_ATTRf(enable_on_exec, p_unsigned);
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PRINT_ATTRf(task, p_unsigned);
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PRINT_ATTRf(watermark, p_unsigned);
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PRINT_ATTRf(precise_ip, p_unsigned);
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PRINT_ATTRf(mmap_data, p_unsigned);
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PRINT_ATTRf(sample_id_all, p_unsigned);
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PRINT_ATTRf(exclude_host, p_unsigned);
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PRINT_ATTRf(exclude_guest, p_unsigned);
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PRINT_ATTRf(exclude_callchain_kernel, p_unsigned);
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PRINT_ATTRf(exclude_callchain_user, p_unsigned);
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PRINT_ATTRf(mmap2, p_unsigned);
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PRINT_ATTRf(comm_exec, p_unsigned);
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PRINT_ATTRf(use_clockid, p_unsigned);
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PRINT_ATTRf(context_switch, p_unsigned);
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PRINT_ATTRf(write_backward, p_unsigned);
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PRINT_ATTRf(namespaces, p_unsigned);
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PRINT_ATTRf(ksymbol, p_unsigned);
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PRINT_ATTRf(bpf_event, p_unsigned);
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PRINT_ATTRf(aux_output, p_unsigned);
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PRINT_ATTRf(cgroup, p_unsigned);
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PRINT_ATTRf(text_poke, p_unsigned);
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PRINT_ATTRf(build_id, p_unsigned);
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PRINT_ATTRf(inherit_thread, p_unsigned);
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PRINT_ATTRf(remove_on_exec, p_unsigned);
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PRINT_ATTRf(sigtrap, p_unsigned);
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PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned, false);
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PRINT_ATTRf(bp_type, p_unsigned);
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PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex, false);
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PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex, false);
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PRINT_ATTRf(branch_sample_type, p_branch_sample_type);
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PRINT_ATTRf(sample_regs_user, p_hex);
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PRINT_ATTRf(sample_stack_user, p_unsigned);
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PRINT_ATTRf(clockid, p_signed);
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PRINT_ATTRf(sample_regs_intr, p_hex);
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|
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;
|
|
}
|