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    SubjectRe: [PATCH v3 6/8] perf/tools: Enhance JSON/metric infrastructure to handle "?"
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    On 3/2/20 8:38 PM, Jiri Olsa wrote:
    > On Sat, Feb 29, 2020 at 03:11:57PM +0530, Kajol Jain wrote:
    >
    > SNIP
    >
    >> #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
    >

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