@@ -7,6 +7,11 @@
#include <string.h>
#include <linux/stringify.h>
#include "header.h"
+#include "metricgroup.h"
+#include "evlist.h"
+#include <dirent.h>
+#include "pmu.h"
+#include <api/fs/fs.h>
#define mfspr(rn) ({unsigned long rval; \
asm volatile("mfspr %0," __stringify(rn) \
@@ -16,6 +21,8 @@
#define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
#define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
+#define SOCKETS_INFO_FILE_PATH "/devices/hv_24x7/interface/"
+
int
get_cpuid(char *buffer, size_t sz)
{
@@ -44,3 +51,36 @@ get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
return bufp;
}
+
+int arch_get_runtimeparam(void)
+{
+ int count = 0;
+ DIR *dir;
+ char path[PATH_MAX];
+ const char *sysfs = sysfs__mountpoint();
+ char filename[] = "sockets";
+ FILE *file;
+ char buf[16], *num;
+ int data;
+
+ if (!sysfs)
+ goto out;
+ snprintf(path, PATH_MAX,
+ "%s" SOCKETS_INFO_FILE_PATH, sysfs);
+ dir = opendir(path);
+ if (!dir)
+ goto out;
+ strcat(path, filename);
+ file = fopen(path, "r");
+ if (!file)
+ goto out;
+
+ data = fread(buf, 1, sizeof(buf), file);
+ if (data == 0)
+ goto out;
+ count = strtol(buf, &num, 10);
+out:
+ if (!count)
+ count = 1;
+ return count;
+}
@@ -15,6 +15,7 @@ struct parse_ctx {
struct parse_id ids[MAX_PARSE_ID];
};
+extern int expr__runtimeparam;
void expr__ctx_init(struct parse_ctx *ctx);
void expr__add_id(struct parse_ctx *ctx, const char *id, double val);
#ifndef IN_EXPR_Y
@@ -36,6 +36,8 @@
%type <num> expr if_expr
%{
+int expr__runtimeparam;
+
static int expr__lex(YYSTYPE *res, const char **pp);
static void expr__error(double *final_val __maybe_unused,
@@ -101,7 +103,7 @@ static int expr__symbol(YYSTYPE *res, const char *p, const char **pp)
if (*p == '#')
*dst++ = *p++;
- while (isalnum(*p) || *p == '_' || *p == '.' || *p == ':' || *p == '@' || *p == '\\') {
+ while (isalnum(*p) || *p == '_' || *p == '.' || *p == ':' || *p == '@' || *p == '\\' || *p == '?') {
if (p - s >= MAXIDLEN)
return -1;
/*
@@ -112,6 +114,19 @@ static int expr__symbol(YYSTYPE *res, const char *p, const char **pp)
*dst++ = '/';
else if (*p == '\\')
*dst++ = *++p;
+ else if (*p == '?') {
+ int size = snprintf(NULL, 0, "%d", expr__runtimeparam);
+ char * paramval = (char *)malloc(size);
+ int i = 0;
+ if(!paramval)
+ *dst++ = '0';
+ else {
+ sprintf(paramval, "%d", expr__runtimeparam);
+ while(i < size)
+ *dst++ = paramval[i++];
+ free(paramval);
+ }
+ }
else
*dst++ = *p;
p++;
@@ -399,6 +399,11 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
strlist__delete(metriclist);
}
+int __weak arch_get_runtimeparam(void)
+{
+ return 1;
+}
+
static int metricgroup__add_metric(const char *metric, struct strbuf *events,
struct list_head *group_list)
{
@@ -419,52 +424,80 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
continue;
if (match_metric(pe->metric_group, metric) ||
match_metric(pe->metric_name, metric)) {
- const char **ids;
- int idnum;
- struct egroup *eg;
- bool no_group = false;
-
- pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
-
- if (expr__find_other(pe->metric_expr,
- NULL, &ids, &idnum) < 0)
- continue;
- if (events->len > 0)
- strbuf_addf(events, ",");
- for (j = 0; j < idnum; j++) {
- pr_debug("found event %s\n", ids[j]);
- /*
- * Duration time maps to a software event and can make
- * groups not count. Always use it outside a
- * group.
- */
- if (!strcmp(ids[j], "duration_time")) {
- if (j > 0)
- strbuf_addf(events, "}:W,");
- strbuf_addf(events, "duration_time");
- no_group = true;
+ int k, count;
+
+ count = arch_get_runtimeparam();
+
+ /* This loop is added to create multiple
+ * events depend on count value and add
+ * those events to group_list.
+ */
+ for (k = 0; k < count; k++) {
+ const char **ids;
+ int idnum;
+ struct egroup *eg;
+ bool no_group = false;
+ char value[PATH_MAX];
+
+ pr_debug("metric expr %s for %s\n",
+ pe->metric_expr, pe->metric_name);
+ expr__runtimeparam = k;
+ if (expr__find_other(pe->metric_expr, NULL,
+ &ids, &idnum) < 0)
continue;
+ if (events->len > 0)
+ strbuf_addf(events, ",");
+ for (j = 0; j < idnum; j++) {
+ pr_debug("found event %s\n", ids[j]);
+ /*
+ * Duration time maps to a software
+ * event and can make groups not count.
+ * Always use it outside a group.
+ */
+ if (!strcmp(ids[j], "duration_time")) {
+ if (j > 0)
+ strbuf_addf(events,
+ "}:W,");
+ strbuf_addf(events,
+ "duration_time");
+ no_group = true;
+ continue;
+ }
+ strbuf_addf(events, "%s%s",
+ j == 0 || no_group ? "{" :
+ ",", ids[j]);
+ no_group = false;
}
- strbuf_addf(events, "%s%s",
- j == 0 || no_group ? "{" : ",",
- ids[j]);
- no_group = false;
- }
- if (!no_group)
- strbuf_addf(events, "}:W");
+ if (!no_group)
+ strbuf_addf(events, "}:W");
- eg = malloc(sizeof(struct egroup));
- if (!eg) {
- ret = -ENOMEM;
- break;
+ eg = malloc(sizeof(struct egroup));
+ if (!eg) {
+ ret = -ENOMEM;
+ break;
+ }
+ eg->ids = ids;
+ eg->idnum = idnum;
+ strcpy(value, pe->metric_name);
+ if (strstr(pe->metric_name, "?")) {
+ int size = snprintf(NULL, 0, "%d", k);
+ char *param = (char *)malloc(size + 1);
+
+ if (!param) {
+ strcat(value, "_0");
+ } else {
+ sprintf(param, "%c%d", '_', k);
+ value[strlen(value) - 1] = '\0';
+ strcat(value, param);
+ free(param);
+ }
+ }
+ eg->metric_name = strdup(value);
+ eg->metric_expr = pe->metric_expr;
+ eg->metric_unit = pe->unit;
+ list_add_tail(&eg->nd, group_list);
+ ret = 0;
}
- eg->ids = ids;
- eg->idnum = idnum;
- eg->metric_name = pe->metric_name;
- eg->metric_expr = pe->metric_expr;
- eg->metric_unit = pe->unit;
- list_add_tail(&eg->nd, group_list);
- ret = 0;
}
}
return ret;
@@ -34,4 +34,5 @@ int metricgroup__parse_groups(const struct option *opt,
void metricgroup__print(bool metrics, bool groups, char *filter,
bool raw, bool details);
bool metricgroup__has_metric(const char *metric);
+int arch_get_runtimeparam(void);
#endif
@@ -780,7 +780,12 @@ static void generic_metric(struct perf_stat_config *config,
if (!metric_events[i]) {
const char *p = metric_expr;
+ if (strstr(p, "?")) {
+ char *tmp = strrchr(metric_name, '_');
+ tmp++;
+ expr__runtimeparam = strtol(tmp, &tmp, 10);
+ }
if (expr__parse(&ratio, &pctx, &p) == 0) {
char *unit;
char metric_bf[64];
Patch enhances current metric infrastructure to handle "?" in the metric expression. The "?" can be use for parameters whose value not known while creating metric events and which can be replace later at runtime to the proper value. It also add flexibility to create multiple events out of single metric event added in json file. Patch adds function 'arch_get_runtimeparam' which is a arch specific function, returns the count of metric events need to be created. By default it return 1. One loop is added in function 'metricgroup__add_metric', which create multiple events at run time depend on return value of 'arch_get_runtimeparam' and merge that event in 'group_list'. This infrastructure needed for hv_24x7 socket/chip level events. "hv_24x7" chip level events needs specific chip-id to which the data is requested. Function 'arch_get_runtimeparam' implemented in header.c which extract number of sockets from sysfs file "sockets" under "/sys/devices/hv_24x7/interface/". Signed-off-by: Kajol Jain <kjain@linux.ibm.com> --- tools/perf/arch/powerpc/util/header.c | 40 +++++++++ tools/perf/util/expr.h | 1 + tools/perf/util/expr.y | 17 +++- tools/perf/util/metricgroup.c | 117 +++++++++++++++++--------- tools/perf/util/metricgroup.h | 1 + tools/perf/util/stat-shadow.c | 5 ++ 6 files changed, 138 insertions(+), 43 deletions(-)