diff options
| author | Xi Pardee <xi.pardee@intel.com> | 2024-06-24 13:32:14 -0700 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-07-08 10:43:41 +0300 |
| commit | 438aef8270579d4f8dee976709f015deb084e665 (patch) | |
| tree | 545ea2dc6b6d4e8de5da343773e0a77b91fc03fd | |
| parent | 4455e2b1c80cd0838d8883b18022e5bafdf2d1f4 (diff) | |
platform/x86:intel/pmc: Add support to show ltr_ignore value
Add a column in ltr_show output to show if the IP has been ignored.
A mutex lock is used to protect the critical section as other processes
might try to write to the LTR ignore register at the same time.
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Link: https://lore.kernel.org/r/20240624203218.2428475-6-xi.pardee@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| -rw-r--r-- | drivers/platform/x86/intel/pmc/core.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index fdf2859daeaa..c15163409e95 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -623,13 +623,24 @@ static int pmc_core_ltr_show(struct seq_file *s, void *unused) for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { struct pmc *pmc; const struct pmc_bit_map *map; + u32 ltr_ign_reg; pmc = pmcdev->pmcs[i]; if (!pmc) continue; + scoped_guard(mutex, &pmcdev->lock) + ltr_ign_reg = pmc_core_reg_read(pmc, pmc->map->ltr_ignore_offset); + map = pmc->map->ltr_show_sts; for (index = 0; map[index].name; index++) { + bool ltr_ign_data; + + if (index > pmc->map->ltr_ignore_max) + ltr_ign_data = false; + else + ltr_ign_data = ltr_ign_reg & BIT(index); + decoded_snoop_ltr = decoded_non_snoop_ltr = 0; ltr_raw_data = pmc_core_reg_read(pmc, map[index].bit_mask); @@ -647,10 +658,10 @@ static int pmc_core_ltr_show(struct seq_file *s, void *unused) decoded_snoop_ltr = val * convert_ltr_scale(scale); } - seq_printf(s, "%d\tPMC%d:%-32s\tLTR: RAW: 0x%-16x\tNon-Snoop(ns): %-16llu\tSnoop(ns): %-16llu\n", + seq_printf(s, "%d\tPMC%d:%-32s\tLTR: RAW: 0x%-16x\tNon-Snoop(ns): %-16llu\tSnoop(ns): %-16llu\tLTR_IGNORE: %d\n", ltr_index, i, map[index].name, ltr_raw_data, decoded_non_snoop_ltr, - decoded_snoop_ltr); + decoded_snoop_ltr, ltr_ign_data); ltr_index++; } } |