tools/power turbostat: show GFXMHz

Under the column "GFXMHz", show a snapshot of this attribute:
/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz

This is an instantaneous snapshot of what sysfs presents
at the end of the measurement interval.  turbostat does
not average or otherwise perform any math on this value.

Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index c679326..d599f91 100644 (file)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -90,6 +90,8 @@ char *output_buffer, *outp;
 unsigned int do_rapl;
 unsigned int do_dts;
 unsigned int do_ptm;
+unsigned int do_gfx_mhz;
+unsigned int gfx_cur_mhz;
 unsigned int tcc_activation_temp;
 unsigned int tcc_activation_temp_override;
 double rapl_power_units, rapl_time_units;
@@ -183,6 +185,7 @@ struct pkg_data {
        unsigned long long pkg_any_core_c0;
        unsigned long long pkg_any_gfxe_c0;
        unsigned long long pkg_both_core_gfxe_c0;
+       unsigned int gfx_mhz;
        unsigned int package_id;
        unsigned int energy_pkg;        /* MSR_PKG_ENERGY_STATUS */
        unsigned int energy_dram;       /* MSR_DRAM_ENERGY_STATUS */
@@ -311,7 +314,7 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr)
 /*
  * Example Format w/ field column widths:
  *
- *  Package    Core     CPU Avg_MHz Bzy_MHz TSC_MHz     IRQ   SMI   Busy% CPU_%c1 CPU_%c3 CPU_%c6 CPU_%c7 CoreTmp  PkgTmp Pkg%pc2 Pkg%pc3 Pkg%pc6 Pkg%pc7 PkgWatt CorWatt GFXWatt
+ *  Package    Core     CPU Avg_MHz Bzy_MHz TSC_MHz     IRQ   SMI   Busy% CPU_%c1 CPU_%c3 CPU_%c6 CPU_%c7 CoreTmp  PkgTmp  GFXMHz Pkg%pc2 Pkg%pc3 Pkg%pc6 Pkg%pc7 PkgWatt CorWatt GFXWatt
  * 12345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678
  */
 
@@ -362,6 +365,9 @@ void print_header(void)
        if (do_ptm)
                outp += sprintf(outp, "  PkgTmp");
 
+       if (do_gfx_mhz)
+               outp += sprintf(outp, "  GFXMHz");
+
        if (do_skl_residency) {
                outp += sprintf(outp, " Totl%%C0");
                outp += sprintf(outp, "  Any%%C0");
@@ -608,6 +614,10 @@ int format_counters(struct thread_data *t, struct core_data *c,
        if (do_ptm)
                outp += sprintf(outp, "%8d", p->pkg_temp_c);
 
+       /* GFXMHz */
+       if (do_gfx_mhz)
+               outp += sprintf(outp, "%8d", p->gfx_mhz);
+
        /* Totl%C0, Any%C0 GFX%C0 CPUGFX% */
        if (do_skl_residency) {
                outp += sprintf(outp, "%8.2f", 100.0 * p->pkg_wtd_core_c0/t->tsc);
@@ -746,6 +756,8 @@ delta_package(struct pkg_data *new, struct pkg_data *old)
        old->pc10 = new->pc10 - old->pc10;
        old->pkg_temp_c = new->pkg_temp_c;
 
+       old->gfx_mhz = new->gfx_mhz;
+
        DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
        DELTA_WRAP32(new->energy_cores, old->energy_cores);
        DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
@@ -909,6 +921,8 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data
        p->rapl_pkg_perf_status = 0;
        p->rapl_dram_perf_status = 0;
        p->pkg_temp_c = 0;
+
+       p->gfx_mhz = 0;
 }
 int sum_counters(struct thread_data *t, struct core_data *c,
        struct pkg_data *p)
@@ -961,6 +975,8 @@ int sum_counters(struct thread_data *t, struct core_data *c,
        average.packages.energy_cores += p->energy_cores;
        average.packages.energy_gfx += p->energy_gfx;
 
+       average.packages.gfx_mhz = p->gfx_mhz;
+
        average.packages.pkg_temp_c = MAX(average.packages.pkg_temp_c, p->pkg_temp_c);
 
        average.packages.rapl_pkg_perf_status += p->rapl_pkg_perf_status;
@@ -1176,6 +1192,9 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
                        return -17;
                p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
        }
+       if (do_gfx_mhz)
+               p->gfx_mhz = gfx_cur_mhz;
+
        return 0;
 }
 
@@ -1825,6 +1844,30 @@ int snapshot_proc_interrupts(void)
        }
        return 0;
 }
+/*
+ * snapshot_gfx_mhz()
+ *
+ * record snapshot of
+ * /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz
+ *
+ * return 1 if config change requires a restart, else return 0
+ */
+int snapshot_gfx_mhz(void)
+{
+       static FILE *fp;
+       int retval;
+
+       if (fp == NULL)
+               fp = fopen_or_die("/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz", "r");
+       else
+               rewind(fp);
+
+       retval = fscanf(fp, "%d", &gfx_cur_mhz);
+       if (retval != 1)
+               err(1, "GFX MHz");
+
+       return 0;
+}
 
 /*
  * snapshot /proc and /sys files
@@ -1836,6 +1879,9 @@ int snapshot_proc_sysfs_files(void)
        if (snapshot_proc_interrupts())
                return 1;
 
+       if (do_gfx_mhz)
+               snapshot_gfx_mhz();
+
        return 0;
 }
 
@@ -3111,6 +3157,8 @@ void process_cpuid()
        if (has_skl_msrs(family, model))
                calculate_tsc_tweak();
 
+       do_gfx_mhz = !access("/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz", R_OK);
+
        return;
 }