1// SPDX-License-Identifier: GPL-2.0
  2#include <inttypes.h>
  3#include <stdio.h>
  4#include <stdbool.h>
  5#include <linux/kernel.h>
  6#include <linux/types.h>
  7#include <linux/perf_event.h>
  8#include "util/evsel_fprintf.h"
  9
 10struct bit_names {
 11	int bit;
 12	const char *name;
 13};
 14
 15static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits)
 16{
 17	bool first_bit = true;
 18	int i = 0;
 19
 20	do {
 21		if (value & bits[i].bit) {
 22			buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name);
 23			first_bit = false;
 24		}
 25	} while (bits[++i].name != NULL);
 26}
 27
 28static void __p_sample_type(char *buf, size_t size, u64 value)
 29{
 30#define bit_name(n) { PERF_SAMPLE_##n, #n }
 31	struct bit_names bits[] = {
 32		bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
 33		bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
 34		bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
 35		bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
 36		bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
 37		bit_name(WEIGHT), bit_name(PHYS_ADDR),
 38		{ .name = NULL, }
 39	};
 40#undef bit_name
 41	__p_bits(buf, size, value, bits);
 42}
 43
 44static void __p_branch_sample_type(char *buf, size_t size, u64 value)
 45{
 46#define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n }
 47	struct bit_names bits[] = {
 48		bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY),
 49		bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL),
 50		bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX),
 51		bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP),
 52		bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES),
 53		{ .name = NULL, }
 54	};
 55#undef bit_name
 56	__p_bits(buf, size, value, bits);
 57}
 58
 59static void __p_read_format(char *buf, size_t size, u64 value)
 60{
 61#define bit_name(n) { PERF_FORMAT_##n, #n }
 62	struct bit_names bits[] = {
 63		bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
 64		bit_name(ID), bit_name(GROUP),
 65		{ .name = NULL, }
 66	};
 67#undef bit_name
 68	__p_bits(buf, size, value, bits);
 69}
 70
 71#define BUF_SIZE		1024
 72
 73#define p_hex(val)		snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
 74#define p_unsigned(val)		snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
 75#define p_signed(val)		snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
 76#define p_sample_type(val)	__p_sample_type(buf, BUF_SIZE, val)
 77#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
 78#define p_read_format(val)	__p_read_format(buf, BUF_SIZE, val)
 79
 80#define PRINT_ATTRn(_n, _f, _p)				\
 81do {							\
 82	if (attr->_f) {					\
 83		_p(attr->_f);				\
 84		ret += attr__fprintf(fp, _n, buf, priv);\
 85	}						\
 86} while (0)
 87
 88#define PRINT_ATTRf(_f, _p)	PRINT_ATTRn(#_f, _f, _p)
 89
 90int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
 91			     attr__fprintf_f attr__fprintf, void *priv)
 92{
 93	char buf[BUF_SIZE];
 94	int ret = 0;
 95
 96	PRINT_ATTRf(type, p_unsigned);
 97	PRINT_ATTRf(size, p_unsigned);
 98	PRINT_ATTRf(config, p_hex);
 99	PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned);
100	PRINT_ATTRf(sample_type, p_sample_type);
101	PRINT_ATTRf(read_format, p_read_format);
102
103	PRINT_ATTRf(disabled, p_unsigned);
104	PRINT_ATTRf(inherit, p_unsigned);
105	PRINT_ATTRf(pinned, p_unsigned);
106	PRINT_ATTRf(exclusive, p_unsigned);
107	PRINT_ATTRf(exclude_user, p_unsigned);
108	PRINT_ATTRf(exclude_kernel, p_unsigned);
109	PRINT_ATTRf(exclude_hv, p_unsigned);
110	PRINT_ATTRf(exclude_idle, p_unsigned);
111	PRINT_ATTRf(mmap, p_unsigned);
112	PRINT_ATTRf(comm, p_unsigned);
113	PRINT_ATTRf(freq, p_unsigned);
114	PRINT_ATTRf(inherit_stat, p_unsigned);
115	PRINT_ATTRf(enable_on_exec, p_unsigned);
116	PRINT_ATTRf(task, p_unsigned);
117	PRINT_ATTRf(watermark, p_unsigned);
118	PRINT_ATTRf(precise_ip, p_unsigned);
119	PRINT_ATTRf(mmap_data, p_unsigned);
120	PRINT_ATTRf(sample_id_all, p_unsigned);
121	PRINT_ATTRf(exclude_host, p_unsigned);
122	PRINT_ATTRf(exclude_guest, p_unsigned);
123	PRINT_ATTRf(exclude_callchain_kernel, p_unsigned);
124	PRINT_ATTRf(exclude_callchain_user, p_unsigned);
125	PRINT_ATTRf(mmap2, p_unsigned);
126	PRINT_ATTRf(comm_exec, p_unsigned);
127	PRINT_ATTRf(use_clockid, p_unsigned);
128	PRINT_ATTRf(context_switch, p_unsigned);
129	PRINT_ATTRf(write_backward, p_unsigned);
130	PRINT_ATTRf(namespaces, p_unsigned);
131	PRINT_ATTRf(ksymbol, p_unsigned);
132	PRINT_ATTRf(bpf_event, p_unsigned);
133	PRINT_ATTRf(aux_output, p_unsigned);
134
135	PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
136	PRINT_ATTRf(bp_type, p_unsigned);
137	PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex);
138	PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex);
139	PRINT_ATTRf(branch_sample_type, p_branch_sample_type);
140	PRINT_ATTRf(sample_regs_user, p_hex);
141	PRINT_ATTRf(sample_stack_user, p_unsigned);
142	PRINT_ATTRf(clockid, p_signed);
143	PRINT_ATTRf(sample_regs_intr, p_hex);
144	PRINT_ATTRf(aux_watermark, p_unsigned);
145	PRINT_ATTRf(sample_max_stack, p_unsigned);
146
147	return ret;
148}