1 files changed, 342 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
new file mode 100644
index 000000000..480e8f0d3
--- /dev/null
+++ b/tools/perf/pmu-events/empty-pmu-events.c
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * An empty pmu-events.c file used when there is no architecture json files in
+ * arch or when the jevents.py script cannot be run.
+ *
+ * The test cpu/soc is provided for testing.
+ */
+#include "pmu-events/pmu-events.h"
+#include "util/header.h"
+#include "util/pmu.h"
+#include <string.h>
+#include <stddef.h>
+
+static const struct pmu_event pme_test_soc_cpu[] = {
+	{
+		.name = "l3_cache_rd",
+		.event = "event=0x40",
+		.desc = "L3 cache access, read",
+		.topic = "cache",
+		.long_desc = "Attributable Level 3 cache access, read",
+	},
+	{
+		.name = "segment_reg_loads.any",
+		.event = "event=0x6,period=200000,umask=0x80",
+		.desc = "Number of segment register loads",
+		.topic = "other",
+	},
+	{
+		.name = "dispatch_blocked.any",
+		.event = "event=0x9,period=200000,umask=0x20",
+		.desc = "Memory cluster signals to block micro-op dispatch for any reason",
+		.topic = "other",
+	},
+	{
+		.name = "eist_trans",
+		.event = "event=0x3a,period=200000,umask=0x0",
+		.desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
+		.topic = "other",
+	},
+	{
+		.name = "uncore_hisi_ddrc.flux_wcmd",
+		.event = "event=0x2",
+		.desc = "DDRC write commands. Unit: hisi_sccl,ddrc ",
+		.topic = "uncore",
+		.long_desc = "DDRC write commands",
+		.pmu = "hisi_sccl,ddrc",
+	},
+	{
+		.name = "unc_cbo_xsnp_response.miss_eviction",
+		.event = "event=0x22,umask=0x81",
+		.desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core. Unit: uncore_cbox ",
+		.topic = "uncore",
+		.long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
+		.pmu = "uncore_cbox",
+	},
+	{
+		.name = "event-hyphen",
+		.event = "event=0xe0,umask=0x00",
+		.desc = "UNC_CBO_HYPHEN. Unit: uncore_cbox ",
+		.topic = "uncore",
+		.long_desc = "UNC_CBO_HYPHEN",
+		.pmu = "uncore_cbox",
+	},
+	{
+		.name = "event-two-hyph",
+		.event = "event=0xc0,umask=0x00",
+		.desc = "UNC_CBO_TWO_HYPH. Unit: uncore_cbox ",
+		.topic = "uncore",
+		.long_desc = "UNC_CBO_TWO_HYPH",
+		.pmu = "uncore_cbox",
+	},
+	{
+		.name = "uncore_hisi_l3c.rd_hit_cpipe",
+		.event = "event=0x7",
+		.desc = "Total read hits. Unit: hisi_sccl,l3c ",
+		.topic = "uncore",
+		.long_desc = "Total read hits",
+		.pmu = "hisi_sccl,l3c",
+	},
+	{
+		.name = "uncore_imc_free_running.cache_miss",
+		.event = "event=0x12",
+		.desc = "Total cache misses. Unit: uncore_imc_free_running ",
+		.topic = "uncore",
+		.long_desc = "Total cache misses",
+		.pmu = "uncore_imc_free_running",
+	},
+	{
+		.name = "uncore_imc.cache_hits",
+		.event = "event=0x34",
+		.desc = "Total cache hits. Unit: uncore_imc ",
+		.topic = "uncore",
+		.long_desc = "Total cache hits",
+		.pmu = "uncore_imc",
+	},
+	{
+		.name = "bp_l1_btb_correct",
+		.event = "event=0x8a",
+		.desc = "L1 BTB Correction",
+		.topic = "branch",
+	},
+	{
+		.name = "bp_l2_btb_correct",
+		.event = "event=0x8b",
+		.desc = "L2 BTB Correction",
+		.topic = "branch",
+	},
+	{
+		.metric_expr	= "1 / IPC",
+		.metric_name	= "CPI",
+	},
+	{
+		.metric_expr	= "inst_retired.any / cpu_clk_unhalted.thread",
+		.metric_name	= "IPC",
+		.metric_group	= "group1",
+	},
+	{
+		.metric_expr	= "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
+		"( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
+		.metric_name	= "Frontend_Bound_SMT",
+	},
+	{
+		.metric_expr	= "l1d\\-loads\\-misses / inst_retired.any",
+		.metric_name	= "dcache_miss_cpi",
+	},
+	{
+		.metric_expr	= "l1i\\-loads\\-misses / inst_retired.any",
+		.metric_name	= "icache_miss_cycles",
+	},
+	{
+		.metric_expr	= "(dcache_miss_cpi + icache_miss_cycles)",
+		.metric_name	= "cache_miss_cycles",
+		.metric_group	= "group1",
+	},
+	{
+		.metric_expr	= "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
+		.metric_name	= "DCache_L2_All_Hits",
+	},
+	{
+		.metric_expr	= "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + "
+		"l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
+		.metric_name	= "DCache_L2_All_Miss",
+	},
+	{
+		.metric_expr	= "DCache_L2_All_Hits + DCache_L2_All_Miss",
+		.metric_name	= "DCache_L2_All",
+	},
+	{
+		.metric_expr	= "d_ratio(DCache_L2_All_Hits, DCache_L2_All)",
+		.metric_name	= "DCache_L2_Hits",
+	},
+	{
+		.metric_expr	= "d_ratio(DCache_L2_All_Miss, DCache_L2_All)",
+		.metric_name	= "DCache_L2_Misses",
+	},
+	{
+		.metric_expr	= "ipc + M2",
+		.metric_name	= "M1",
+	},
+	{
+		.metric_expr	= "ipc + M1",
+		.metric_name	= "M2",
+	},
+	{
+		.metric_expr	= "1/M3",
+		.metric_name	= "M3",
+	},
+	{
+		.metric_expr	= "64 * l1d.replacement / 1000000000 / duration_time",
+		.metric_name	= "L1D_Cache_Fill_BW",
+	},
+	{
+		.name = 0,
+		.event = 0,
+		.desc = 0,
+	},
+};
+
+/* Struct used to make the PMU event table implementation opaque to callers. */
+struct pmu_events_table {
+	const struct pmu_event *entries;
+};
+
+/*
+ * Map a CPU to its table of PMU events. The CPU is identified by the
+ * cpuid field, which is an arch-specific identifier for the CPU.
+ * The identifier specified in tools/perf/pmu-events/arch/xxx/mapfile
+ * must match the get_cpuid_str() in tools/perf/arch/xxx/util/header.c)
+ *
+ * The  cpuid can contain any character other than the comma.
+ */
+struct pmu_events_map {
+	const char *arch;
+	const char *cpuid;
+	const struct pmu_events_table table;
+};
+
+/*
+ * Global table mapping each known CPU for the architecture to its
+ * table of PMU events.
+ */
+static const struct pmu_events_map pmu_events_map[] = {
+	{
+		.arch = "testarch",
+		.cpuid = "testcpu",
+		.table = { pme_test_soc_cpu },
+	},
+	{
+		.arch = 0,
+		.cpuid = 0,
+		.table = { 0 },
+	},
+};
+
+static const struct pmu_event pme_test_soc_sys[] = {
+	{
+		.name = "sys_ddr_pmu.write_cycles",
+		.event = "event=0x2b",
+		.desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
+		.compat = "v8",
+		.topic = "uncore",
+		.pmu = "uncore_sys_ddr_pmu",
+	},
+	{
+		.name = "sys_ccn_pmu.read_cycles",
+		.event = "config=0x2c",
+		.desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ",
+		.compat = "0x01",
+		.topic = "uncore",
+		.pmu = "uncore_sys_ccn_pmu",
+	},
+	{
+		.name = 0,
+		.event = 0,
+		.desc = 0,
+	},
+};
+
+struct pmu_sys_events {
+	const char *name;
+	const struct pmu_events_table table;
+};
+
+static const struct pmu_sys_events pmu_sys_event_tables[] = {
+	{
+		.table = { pme_test_soc_sys },
+		.name = "pme_test_soc_sys",
+	},
+	{
+		.table = { 0 }
+	},
+};
+
+int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_event_iter_fn fn,
+				    void *data)
+{
+	for (const struct pmu_event *pe = &table->entries[0];
+	     pe->name || pe->metric_group || pe->metric_name;
+	     pe++) {
+		int ret = fn(pe, table, data);
+
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
+{
+	const struct pmu_events_table *table = NULL;
+	char *cpuid = perf_pmu__getcpuid(pmu);
+	int i;
+
+	/* on some platforms which uses cpus map, cpuid can be NULL for
+	 * PMUs other than CORE PMUs.
+	 */
+	if (!cpuid)
+		return NULL;
+
+	i = 0;
+	for (;;) {
+		const struct pmu_events_map *map = &pmu_events_map[i++];
+
+		if (!map->cpuid)
+			break;
+
+		if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
+			table = &map->table;
+			break;
+		}
+	}
+	free(cpuid);
+	return table;
+}
+
+const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
+{
+	for (const struct pmu_events_map *tables = &pmu_events_map[0];
+	     tables->arch;
+	     tables++) {
+		if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
+			return &tables->table;
+	}
+	return NULL;
+}
+
+int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
+{
+	for (const struct pmu_events_map *tables = &pmu_events_map[0];
+	     tables->arch;
+	     tables++) {
+		int ret = pmu_events_table_for_each_event(&tables->table, fn, data);
+
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+const struct pmu_events_table *find_sys_events_table(const char *name)
+{
+	for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
+	     tables->name;
+	     tables++) {
+		if (!strcmp(tables->name, name))
+			return &tables->table;
+	}
+	return NULL;
+}
+
+int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data)
+{
+	for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
+	     tables->name;
+	     tables++) {
+		int ret = pmu_events_table_for_each_event(&tables->table, fn, data);
+
+		if (ret)
+			return ret;
+	}
+	return 0;
+}