Unverified Commit 99e243c2 authored by Xi Pardee's avatar Xi Pardee Committed by Ilpo Järvinen
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platform/x86/intel/pmc: Enable substate residencies for multiple PMCs 



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: default avatarXi Pardee <xi.pardee@linux.intel.com>
Link: https://patch.msgid.link/20260108223144.504267-4-xi.pardee@linux.intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 92911c91

drivers/platform/x86/intel/pmc/core.c

+18 −8
Original line number Diff line number Diff line
@@ -776,17 +776,27 @@ 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;

	unsigned int pmc_idx;



	for (pmc_idx = 0; pmc_idx < ARRAY_SIZE(pmcdev->pmcs); ++pmc_idx) {

		int lpm_adj_x2;

		struct pmc *pmc;

		u32 offset;

		u8 mode;



	seq_printf(s, "%-10s %-15s\n", "Substate", "Residency");

		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, "%-10s %-15llu\n", pmc_lpm_modes[mode],

			seq_printf(s, "%15s %15llu\n", pmc_lpm_modes[mode],

				   adjust_lpm_residency(pmc, offset + (4 * mode), lpm_adj_x2));

		}

	}



	return 0;

}