Re: [PATCH v3 6/8] perf/tools: Enhance JSON/metric infrastructure to handle "?"

On 3/2/20 8:38 PM, Jiri Olsa wrote:

On Sat, Feb 29, 2020 at 03:11:57PM +0530, Kajol Jain wrote:

SNIP

quoted

 #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 +51,43 @@ 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;

we have sysfs__read_ull for this

Hi Jiri,
    Thanks for suggesting it. Will update.

Kajol

jirka