1 files changed, 367 insertions, 0 deletions
diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c
new file mode 100644
index 000000000000..741c3d657a8b
--- /dev/null
+++ b/tools/perf/util/perf_event_attr_fprintf.c
@@ -0,0 +1,367 @@
+// 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)
+{
+	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_BREAKPOINT)
+	case PERF_TYPE_RAW:
+		return pmu ? pmu->name : "PERF_TYPE_RAW";
+	default:
+		return pmu ? pmu->name : NULL;
+	}
+}
+
+static const char *stringify_perf_hw_id(u64 value)
+{
+	switch (value & PERF_HW_EVENT_MASK) {
+	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
+
+static void print_id_unsigned(char *buf, size_t size, u64 value, const char *s)
+{
+	if (s == NULL)
+		snprintf(buf, size, "%"PRIu64, value);
+	else
+		snprintf(buf, size, "%"PRIu64" (%s)", value, s);
+}
+
+static void print_id_hex(char *buf, size_t size, u64 value, const char *s)
+{
+	if (s == NULL)
+		snprintf(buf, size, "%#"PRIx64, value);
+	else
+		snprintf(buf, size, "%#"PRIx64" (%s)", value, s);
+}
+
+static void __p_type_id(char *buf, size_t size, struct perf_pmu *pmu, u32 type)
+{
+	print_id_unsigned(buf, size, type, stringify_perf_type_id(pmu, type));
+}
+
+static void __p_config_hw_id(char *buf, size_t size, struct perf_pmu *pmu, u64 config)
+{
+	const char *name = stringify_perf_hw_id(config);
+
+	if (name == NULL) {
+		if (pmu == NULL) {
+			snprintf(buf, size, "%#"PRIx64, config);
+		} else {
+			snprintf(buf, size, "%#"PRIx64" (%s/config=%#"PRIx64"/)", config, pmu->name,
+				 config);
+		}
+	} else {
+		if (pmu == NULL)
+			snprintf(buf, size, "%#"PRIx64" (%s)", config, name);
+		else
+			snprintf(buf, size, "%#"PRIx64" (%s/%s/)", config, pmu->name, name);
+	}
+}
+
+static void __p_config_sw_id(char *buf, size_t size, u64 id)
+{
+	print_id_hex(buf, size, id, stringify_perf_sw_id(id));
+}
+
+static void __p_config_hw_cache_id(char *buf, size_t size, struct perf_pmu *pmu, u64 config)
+{
+	const char *hw_cache_str = stringify_perf_hw_cache_id(config & 0xff);
+	const char *hw_cache_op_str =
+		stringify_perf_hw_cache_op_id((config & 0xff00) >> 8);
+	const char *hw_cache_op_result_str =
+		stringify_perf_hw_cache_op_result_id((config & 0xff0000) >> 16);
+
+	if (hw_cache_str == NULL || hw_cache_op_str == NULL || hw_cache_op_result_str == NULL) {
+		if (pmu == NULL) {
+			snprintf(buf, size, "%#"PRIx64, config);
+		} else {
+			snprintf(buf, size, "%#"PRIx64" (%s/config=%#"PRIx64"/)", config, pmu->name,
+				 config);
+		}
+	} else {
+		if (pmu == NULL) {
+			snprintf(buf, size, "%#"PRIx64" (%s | %s | %s)", config,
+				 hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
+		} else {
+			snprintf(buf, size, "%#"PRIx64" (%s/%s | %s | %s/)", config, pmu->name,
+				 hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
+		}
+	}
+}
+
+static void __p_config_tracepoint_id(char *buf, size_t size, u64 id)
+{
+	char *str = tracepoint_id_to_name(id);
+
+	print_id_hex(buf, size, id, str);
+	free(str);
+}
+
+static void __p_config_id(struct perf_pmu *pmu, char *buf, size_t size, u32 type, u64 config)
+{
+	switch (type) {
+	case PERF_TYPE_HARDWARE:
+		return __p_config_hw_id(buf, size, pmu, config);
+	case PERF_TYPE_SOFTWARE:
+		return __p_config_sw_id(buf, size, config);
+	case PERF_TYPE_HW_CACHE:
+		return __p_config_hw_cache_id(buf, size, pmu, config);
+	case PERF_TYPE_TRACEPOINT:
+		return __p_config_tracepoint_id(buf, size, config);
+	case PERF_TYPE_RAW:
+	case PERF_TYPE_BREAKPOINT:
+	default:
+		return print_id_hex(buf, size, config, perf_pmu__name_from_config(pmu, config));
+	}
+}
+
+#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(buf, BUF_SIZE, pmu, 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;
+
+	if (!pmu && (attr->type == PERF_TYPE_HARDWARE || attr->type == PERF_TYPE_HW_CACHE)) {
+		u32 extended_type = attr->config >> PERF_PMU_TYPE_SHIFT;
+
+		if (extended_type)
+			pmu = perf_pmus__find_by_type(extended_type);
+	}
+
+	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_ATTRf(defer_callchain, p_unsigned);
+	PRINT_ATTRf(defer_output, 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);
+	PRINT_ATTRf(aux_start_paused, p_unsigned);
+	PRINT_ATTRf(aux_pause, p_unsigned);
+	PRINT_ATTRf(aux_resume, p_unsigned);
+
+	return ret;
+}