[PATCH v6 02/10] perf jevents: Add support for system events tables
John Garry
john.garry at huawei.com
Fri Dec 4 06:10:08 EST 2020
Process the JSONs to find support for "system" events, which are not tied
to a specific CPUID.
A "COMPAT" property is now used to match against the namespace ID from the
kernel PMU driver.
The generated pmu-events.c will now have 2 tables:
a. CPU events, as before.
b. New pmu_sys_event_tables[] table, which will have events matched to
specific SoCs.
It will look like this:
struct pmu_event pme_hisilicon_hip09_sys[] = {
{
.name = "cycles",
.compat = "0x00030736",
.event = "event=0",
.desc = "Clock cycles",
.topic = "smmu v3 pmcg",
.long_desc = "Clock cycles",
},
{
.name = "smmuv3_pmcg.l1_tlb",
.compat = "0x00030736",
.event = "event=0x8a",
.desc = "SMMUv3 PMCG l1_tlb. Unit: smmuv3_pmcg ",
.topic = "smmu v3 pmcg",
.long_desc = "SMMUv3 PMCG l1_tlb",
.pmu = "smmuv3_pmcg",
},
...
};
struct pmu_event pme_arm_cortex_a53[] = {
{
.name = "ext_mem_req",
.event = "event=0xc0",
.desc = "External memory request",
.topic = "memory",
},
{
.name = "ext_mem_req_nc",
.event = "event=0xc1",
.desc = "Non-cacheable external memory request",
.topic = "memory",
},
...
};
struct pmu_event pme_hisilicon_hip09_cpu[] = {
{
.name = "l2d_cache_refill_wr",
.event = "event=0x53",
.desc = "L2D cache refill, write",
.topic = "core imp def",
.long_desc = "Attributable Level 2 data cache refill, write",
},
...
};
struct pmu_events_map pmu_events_map[] = {
{
.cpuid = "0x00000000410fd030",
.version = "v1",
.type = "core",
.table = pme_arm_cortex_a53
},
{
.cpuid = "0x00000000480fd010",
.version = "v1",
.type = "core",
.table = pme_hisilicon_hip09_cpu
},
{
.table = 0
},
};
struct pmu_event pme_hisilicon_hip09_cpu[] = {
{
.name = "uncore_hisi_l3c.rd_cpipe",
.event = "event=0",
.desc = "Total read accesses. Unit: hisi_sccl,l3c ",
.topic = "uncore l3c",
.long_desc = "Total read accesses",
.pmu = "hisi_sccl,l3c",
},
{
.name = "uncore_hisi_l3c.wr_cpipe",
.event = "event=0x1",
.desc = "Total write accesses. Unit: hisi_sccl,l3c ",
.topic = "uncore l3c",
.long_desc = "Total write accesses",
.pmu = "hisi_sccl,l3c",
},
...
};
struct pmu_sys_events pmu_sys_event_tables[] = {
{
.table = pme_hisilicon_hip09_sys,
},
...
};
Signed-off-by: John Garry <john.garry at huawei.com>
Acked-by: Kajol Jain <kjain at linux.ibm.com>
---
tools/perf/pmu-events/jevents.c | 74 +++++++++++++++++++++++++++++-
tools/perf/pmu-events/pmu-events.h | 6 +++
2 files changed, 79 insertions(+), 1 deletion(-)
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 9022216b1253..7a65fd2d25bb 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -55,6 +55,7 @@ char *prog;
struct json_event {
char *name;
+ char *compat;
char *event;
char *desc;
char *long_desc;
@@ -82,6 +83,23 @@ enum aggr_mode_class convert(const char *aggr_mode)
typedef int (*func)(void *data, struct json_event *je);
+static LIST_HEAD(sys_event_tables);
+
+struct sys_event_table {
+ struct list_head list;
+ char *soc_id;
+};
+
+static void free_sys_event_tables(void)
+{
+ struct sys_event_table *et, *next;
+
+ list_for_each_entry_safe(et, next, &sys_event_tables, list) {
+ free(et->soc_id);
+ free(et);
+ }
+}
+
int eprintf(int level, int var, const char *fmt, ...)
{
@@ -360,6 +378,8 @@ static int print_events_table_entry(void *data, struct json_event *je)
if (je->event)
fprintf(outfp, "\t.event = \"%s\",\n", je->event);
fprintf(outfp, "\t.desc = \"%s\",\n", je->desc);
+ if (je->compat)
+ fprintf(outfp, "\t.compat = \"%s\",\n", je->compat);
fprintf(outfp, "\t.topic = \"%s\",\n", topic);
if (je->long_desc && je->long_desc[0])
fprintf(outfp, "\t.long_desc = \"%s\",\n", je->long_desc);
@@ -390,6 +410,7 @@ struct event_struct {
struct list_head list;
char *name;
char *event;
+ char *compat;
char *desc;
char *long_desc;
char *pmu;
@@ -583,6 +604,8 @@ static int json_events(const char *fn,
free(code);
} else if (json_streq(map, field, "EventName")) {
addfield(map, &je.name, "", "", val);
+ } else if (json_streq(map, field, "Compat")) {
+ addfield(map, &je.compat, "", "", val);
} else if (json_streq(map, field, "BriefDescription")) {
addfield(map, &je.desc, "", "", val);
fixdesc(je.desc);
@@ -683,6 +706,7 @@ static int json_events(const char *fn,
free(event);
free(je.desc);
free(je.name);
+ free(je.compat);
free(je.long_desc);
free(extra_desc);
free(je.pmu);
@@ -747,6 +771,15 @@ static char *file_name_to_table_name(char *fname)
return tblname;
}
+static bool is_sys_dir(char *fname)
+{
+ size_t len = strlen(fname), len2 = strlen("/sys");
+
+ if (len2 > len)
+ return false;
+ return !strcmp(fname+len-len2, "/sys");
+}
+
static void print_mapping_table_prefix(FILE *outfp)
{
fprintf(outfp, "struct pmu_events_map pmu_events_map[] = {\n");
@@ -781,6 +814,23 @@ static void print_mapping_test_table(FILE *outfp)
fprintf(outfp, "},\n");
}
+static int process_system_event_tables(FILE *outfp)
+{
+ struct sys_event_table *sys_event_table;
+
+ fprintf(outfp, "\nstruct pmu_sys_events pmu_sys_event_tables[] = {");
+
+ list_for_each_entry(sys_event_table, &sys_event_tables, list) {
+ fprintf(outfp, "\n\t{\n\t\t.table = %s,\n\t},",
+ sys_event_table->soc_id);
+ }
+ fprintf(outfp, "\n\t{\n\t\t.table = 0\n\t},");
+
+ fprintf(outfp, "\n};\n");
+
+ return 0;
+}
+
static int process_mapfile(FILE *outfp, char *fpath)
{
int n = 16384;
@@ -1026,6 +1076,22 @@ static int process_one_file(const char *fpath, const struct stat *sb,
return -1;
}
+ if (is_sys_dir(bname)) {
+ struct sys_event_table *sys_event_table;
+
+ sys_event_table = malloc(sizeof(*sys_event_table));
+ if (!sys_event_table)
+ return -1;
+
+ sys_event_table->soc_id = strdup(tblname);
+ if (!sys_event_table->soc_id) {
+ free(sys_event_table);
+ return -1;
+ }
+ list_add_tail(&sys_event_table->list,
+ &sys_event_tables);
+ }
+
print_events_table_prefix(eventsfp, tblname);
return 0;
}
@@ -1185,10 +1251,16 @@ int main(int argc, char *argv[])
}
rc = process_mapfile(eventsfp, mapfile);
- fclose(eventsfp);
if (rc) {
pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
/* Make build fail */
+ ret = 1;
+ goto err_close_eventsfp;
+ }
+
+ rc = process_system_event_tables(eventsfp);
+ fclose(eventsfp);
+ if (rc) {
ret = 1;
goto err_out;
}
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 7da1a3743b77..d1172f6aebf1 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -12,6 +12,7 @@ enum aggr_mode_class {
*/
struct pmu_event {
const char *name;
+ const char *compat;
const char *event;
const char *desc;
const char *topic;
@@ -43,10 +44,15 @@ struct pmu_events_map {
struct pmu_event *table;
};
+struct pmu_sys_events {
+ struct pmu_event *table;
+};
+
/*
* Global table mapping each known CPU for the architecture to its
* table of PMU events.
*/
extern struct pmu_events_map pmu_events_map[];
+extern struct pmu_sys_events pmu_sys_event_tables[];
#endif
--
2.26.2
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