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tools/power turbostat: show GFX%rc6

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The column "GFX%c6" show the percentage of time the GPU
is in the "render C6" state, rc6.  Deep package C-states on several
systems depend on the GPU being in RC6.

This information comes from the counter
/sys/class/drm/card0/power/rc6_residency_ms,
as read before and after the measurement interval.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2016-02-27 01:28:12 -05:00
parent 27d47356b6
commit fdf676e51f
1 changed files with 45 additions and 0 deletions
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45
tools/power/x86/turbostat/turbostat.c
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@ -90,6 +90,8 @@ char *output_buffer, *outp;
unsigned int do_rapl;
unsigned int do_dts;
unsigned int do_ptm;
unsigned int do_gfx_rc6_ms;
unsigned long long gfx_cur_rc6_ms;
unsigned int do_gfx_mhz;
unsigned int gfx_cur_mhz;
unsigned int tcc_activation_temp;
@ -185,6 +187,7 @@ 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 long long gfx_rc6_ms;
unsigned int gfx_mhz;
unsigned int package_id;
unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
@ -365,6 +368,9 @@ void print_header(void)
if (do_ptm)
outp += sprintf(outp, " PkgTmp");
if (do_gfx_rc6_ms)
outp += sprintf(outp, " GFX%%rc6");
if (do_gfx_mhz)
outp += sprintf(outp, " GFXMHz");
@ -614,6 +620,10 @@ int format_counters(struct thread_data *t, struct core_data *c,
if (do_ptm)
outp += sprintf(outp, "%8d", p->pkg_temp_c);
/* GFXrc6 */
if (do_gfx_rc6_ms)
outp += sprintf(outp, "%8.2f", 100.0 * p->gfx_rc6_ms / 1000.0 / interval_float);
/* GFXMHz */
if (do_gfx_mhz)
outp += sprintf(outp, "%8d", p->gfx_mhz);
@ -756,6 +766,7 @@ 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_rc6_ms = new->gfx_rc6_ms - old->gfx_rc6_ms;
old->gfx_mhz = new->gfx_mhz;
DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
@ -922,6 +933,7 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data
p->rapl_dram_perf_status = 0;
p->pkg_temp_c = 0;
p->gfx_rc6_ms = 0;
p->gfx_mhz = 0;
}
int sum_counters(struct thread_data *t, struct core_data *c,
@ -975,6 +987,7 @@ 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_rc6_ms = p->gfx_rc6_ms;
average.packages.gfx_mhz = p->gfx_mhz;
average.packages.pkg_temp_c = MAX(average.packages.pkg_temp_c, p->pkg_temp_c);
@ -1192,6 +1205,10 @@ 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_rc6_ms)
p->gfx_rc6_ms = gfx_cur_rc6_ms;
if (do_gfx_mhz)
p->gfx_mhz = gfx_cur_mhz;
@ -1844,6 +1861,29 @@ int snapshot_proc_interrupts(void)
}
return 0;
}
/*
* snapshot_gfx_rc6_ms()
*
* record snapshot of
* /sys/class/drm/card0/power/rc6_residency_ms
*
* return 1 if config change requires a restart, else return 0
*/
int snapshot_gfx_rc6_ms(void)
{
FILE *fp;
int retval;
fp = fopen_or_die("/sys/class/drm/card0/power/rc6_residency_ms", "r");
retval = fscanf(fp, "%lld", &gfx_cur_rc6_ms);
if (retval != 1)
err(1, "GFX rc6");
fclose(fp);
return 0;
}
/*
* snapshot_gfx_mhz()
*
@ -1879,6 +1919,9 @@ int snapshot_proc_sysfs_files(void)
if (snapshot_proc_interrupts())
return 1;
if (do_gfx_rc6_ms)
snapshot_gfx_rc6_ms();
if (do_gfx_mhz)
snapshot_gfx_mhz();
@ -3157,6 +3200,8 @@ void process_cpuid()
if (has_skl_msrs(family, model))
calculate_tsc_tweak();
do_gfx_rc6_ms = !access("/sys/class/drm/card0/power/rc6_residency_ms", R_OK);
do_gfx_mhz = !access("/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz", R_OK);
return;