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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-30 12:45:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-30 12:45:04 -0700
commit8843f40550dd9f11ff39b6fee37d167516dc2158 (patch)
treee06c17956705d8dc85673dc696970e844c73bba4 /include
parent88098fd61b7e52e1f78668b6f1f07d39ca67301f (diff)
parentdea47cf45a7f9bb94684830c47d4b259d5f8d6af (diff)
Merge tag 'pm-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki: "These fix a few issues related to running intel_pstate in the passive mode with HWP enabled, correct the handling of the max_cstate module parameter in intel_idle and make a few janitorial changes. Specifics: - Modify Kconfig to prevent configuring either the "conservative" or the "ondemand" governor as the default cpufreq governor if intel_pstate is selected, in which case "schedutil" is the default choice for the default governor setting (Rafael Wysocki). - Modify the cpufreq core, intel_pstate and the schedutil governor to avoid missing updates of the HWP max limit when intel_pstate operates in the passive mode with HWP enabled (Rafael Wysocki). - Fix max_cstate module parameter handling in intel_idle for processor models with C-state tables coming from ACPI (Chen Yu). - Clean up assorted pieces of power management code (Jackie Zamow, Tom Rix, Zhang Qilong)" * tag 'pm-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: schedutil: Always call driver if CPUFREQ_NEED_UPDATE_LIMITS is set cpufreq: Introduce cpufreq_driver_test_flags() cpufreq: speedstep: remove unneeded semicolon PM: sleep: fix typo in kernel/power/process.c intel_idle: Fix max_cstate for processor models without C-state tables cpufreq: intel_pstate: Avoid missing HWP max updates in passive mode cpufreq: Introduce CPUFREQ_NEED_UPDATE_LIMITS driver flag cpufreq: Avoid configuring old governors as default with intel_pstate cpufreq: e_powersaver: remove unreachable break
Diffstat (limited to 'include')
-rw-r--r--include/linux/cpufreq.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index fa37b1c66443..1eaa04f1bae6 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -298,7 +298,7 @@ __ATTR(_name, 0644, show_##_name, store_##_name)
struct cpufreq_driver {
char name[CPUFREQ_NAME_LEN];
- u8 flags;
+ u16 flags;
void *driver_data;
/* needed by all drivers */
@@ -422,9 +422,18 @@ struct cpufreq_driver {
*/
#define CPUFREQ_IS_COOLING_DEV BIT(7)
+/*
+ * Set by drivers that need to update internale upper and lower boundaries along
+ * with the target frequency and so the core and governors should also invoke
+ * the diver if the target frequency does not change, but the policy min or max
+ * may have changed.
+ */
+#define CPUFREQ_NEED_UPDATE_LIMITS BIT(8)
+
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
+bool cpufreq_driver_test_flags(u16 flags);
const char *cpufreq_get_current_driver(void);
void *cpufreq_get_driver_data(void);

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