github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-26 16:12:59 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

platform/x86/intel/pmc: Enable substate residencies for multiple PMCs

Browse Source 
Enable substate residencies support for multiple PMCs. Previously
substate residencies were shown only for the primary PMC. This
change enables substate residencies for all available PMCs.

The output of substate_residencies with this patch will be similar
to this:
pmc0   Substate       Residency
         S0i2.0               0
         S0i2.1               0
         S0i2.2               0
pmc1   Substate       Residency
         S0i2.0               0
         S0i2.1               0
         S0i2.2               0
pmc2   Substate       Residency
         S0i2.0               0

Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
Link: https://patch.msgid.link/20260108223144.504267-4-xi.pardee@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Xi Pardee 2026-01-08 14:31:41 -08:00 committed by Ilpo Järvinen
parent 92911c91b5
commit 99e243c2b1
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 18 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/platform/x86/intel/pmc/core.c
View File

@ -776,16 +776,26 @@ static inline u64 adjust_lpm_residency(struct pmc *pmc, u32 offset,
static int pmc_core_substate_res_show(struct seq_file *s, void *unused)
{
struct pmc_dev *pmcdev = s->private;
struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN];
const int lpm_adj_x2 = pmc->map->lpm_res_counter_step_x2;
u32 offset = pmc->map->lpm_residency_offset;
u8 mode;
unsigned int pmc_idx;
seq_printf(s, "%-10s %-15s\n", "Substate", "Residency");
for (pmc_idx = 0; pmc_idx < ARRAY_SIZE(pmcdev->pmcs); ++pmc_idx) {
int lpm_adj_x2;
struct pmc *pmc;
u32 offset;
u8 mode;
pmc_for_each_mode(mode, pmc) {
seq_printf(s, "%-10s %-15llu\n", pmc_lpm_modes[mode],
adjust_lpm_residency(pmc, offset + (4 * mode), lpm_adj_x2));
pmc = pmcdev->pmcs[pmc_idx];
if (!pmc)
continue;
lpm_adj_x2 = pmc->map->lpm_res_counter_step_x2;
offset = pmc->map->lpm_residency_offset;
seq_printf(s, "pmc%u %10s %15s\n", pmc_idx, "Substate", "Residency");
pmc_for_each_mode(mode, pmc) {
seq_printf(s, "%15s %15llu\n", pmc_lpm_modes[mode],
adjust_lpm_residency(pmc, offset + (4 * mode), lpm_adj_x2));
}
}
return 0;