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platform-profile: Add debugging message for AMD PMF

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If the system is using AMD PMF then APU coefficients are available
in debugfs.  This can be useful to confirm that an ACPI platform
profile is functioning as intended.

Add a debug statement if this file is available.
This commit is contained in:
Mario Limonciello 2024-04-28 16:15:40 -05:00
parent ff7900812c
commit c811b29721
1 changed files with 17 additions and 0 deletions
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17
src/ppd-driver-platform-profile.c
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@ -18,6 +18,7 @@
#define LAPMODE_SYSFS_NAME "dytc_lapmode"
#define ACPI_PLATFORM_PROFILE_PATH "/sys/firmware/acpi/platform_profile"
#define ACPI_PLATFORM_PROFILE_CHOICES_PATH "/sys/firmware/acpi/platform_profile_choices"
#define AMD_PMF_DEBUG "/sys/kernel/debug/amd_pmf/current_power_limits"
struct _PpdDriverPlatformProfile
{
@ -226,6 +227,18 @@ acpi_platform_profile_changed (GFileMonitor *monitor,
update_acpi_platform_profile_state (self);
}
static void
ppd_driver_platform_profile_debugging (void)
{
if (g_file_test (AMD_PMF_DEBUG, G_FILE_TEST_EXISTS)) {
g_autofree char *pmf_debug = NULL;
if (g_file_get_contents (AMD_PMF_DEBUG, &pmf_debug, NULL, NULL))
g_debug ("AMD PMF current power limits '%s'",
g_strchomp(pmf_debug));
}
}
static gboolean
ppd_driver_platform_profile_activate_profile (PpdDriver *driver,
PpdProfile profile,
@ -267,6 +280,9 @@ ppd_driver_platform_profile_activate_profile (PpdDriver *drive
g_debug ("Successfully switched to profile %s", ppd_profile_to_str (profile));
self->acpi_platform_profile = profile;
ppd_driver_platform_profile_debugging();
return TRUE;
}
@ -338,6 +354,7 @@ out:
g_debug ("%s a dytc_lapmode sysfs attribute to thinkpad_acpi",
self->device ? "Found" : "Didn't find");
ppd_driver_platform_profile_debugging();
return PPD_PROBE_RESULT_SUCCESS;
}