mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
tools/power/x86/intel-speed-select: Adjust uncore max/min frequency
When perf level is changed, uncore limits can change. Set the uncore limits via Linux uncore sysfs, when user changes perf level with -o option. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
parent
61f9fdcdcd
commit
2612ae5961
1 changed files with 36 additions and 0 deletions
|
@ -1319,6 +1319,34 @@ static void dump_isst_config(int arg)
|
|||
isst_ctdp_display_information_end(outf);
|
||||
}
|
||||
|
||||
static int set_uncore_min_max(struct isst_id *id, int max, int freq)
|
||||
{
|
||||
char buffer[128], freq_str[16];
|
||||
int fd, ret, len;
|
||||
|
||||
if (max)
|
||||
snprintf(buffer, sizeof(buffer),
|
||||
"/sys/devices/system/cpu/intel_uncore_frequency/package_%02d_die_%02d/max_freq_khz", id->pkg, id->die);
|
||||
else
|
||||
snprintf(buffer, sizeof(buffer),
|
||||
"/sys/devices/system/cpu/intel_uncore_frequency/package_%02d_die_%02d/min_freq_khz", id->pkg, id->die);
|
||||
|
||||
fd = open(buffer, O_WRONLY);
|
||||
if (fd < 0)
|
||||
return fd;
|
||||
|
||||
snprintf(freq_str, sizeof(freq_str), "%d", freq);
|
||||
len = strlen(freq_str);
|
||||
ret = write(fd, freq_str, len);
|
||||
if (ret == -1) {
|
||||
close(fd);
|
||||
return ret;
|
||||
}
|
||||
close(fd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void adjust_scaling_max_from_base_freq(int cpu);
|
||||
|
||||
static void set_tdp_level_for_cpu(struct isst_id *id, void *arg1, void *arg2, void *arg3,
|
||||
|
@ -1340,6 +1368,14 @@ static void set_tdp_level_for_cpu(struct isst_id *id, void *arg1, void *arg2, vo
|
|||
/* Wait for updated base frequencies */
|
||||
usleep(2000);
|
||||
|
||||
/* Adjusting uncore freq */
|
||||
isst_get_uncore_p0_p1_info(id, tdp_level, &ctdp_level);
|
||||
if (ctdp_level.uncore_pm)
|
||||
set_uncore_min_max(id, 0, ctdp_level.uncore_pm * 100000);
|
||||
|
||||
if (ctdp_level.uncore_p0)
|
||||
set_uncore_min_max(id, 1, ctdp_level.uncore_p0 * 100000);
|
||||
|
||||
fprintf(stderr, "Option is set to online/offline\n");
|
||||
ctdp_level.core_cpumask_size =
|
||||
alloc_cpu_set(&ctdp_level.core_cpumask);
|
||||
|
|
Loading…
Reference in a new issue