diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-08 15:39:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-08 15:39:25 -0800 |
| commit | be31d940b3b62c57a5d9506090e66e177b7eba90 (patch) | |
| tree | 75f24f98c743a2ccb5ddb6e7e4b46da504251fdd /drivers/cpufreq/intel_pstate.c | |
| parent | 43d3d587d22530ae92239b6aba5b0b2d5ba2e088 (diff) | |
| parent | c4151604f0603d5700072183a05828ff87d764e4 (diff) | |
Merge tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These address two issues in the intel_pstate driver and one in the
powernow-k8 cpufreq driver.
Specifics:
- Make the powernow-k8 cpufreq driver avoid calling
cpufreq_cpu_get(), which theoretically may return NULL, to get a
policy pointer that is known to it already (Colin Ian King)
- Drop two functions that are not used any more from the intel_pstate
driver (Lukas Bulwahn)
- Make intel_pstate check the HWP capabilities to get the maximum
available P-state in the passive mode to avoid using a stale value
of it in case of out-of-band updates (Rafael Wysocki)"
* tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: remove obsolete functions
cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()
cpufreq: intel_pstate: Use HWP capabilities in intel_cpufreq_adjust_perf()
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 1a660466dd75..be05e038d956 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -76,11 +76,6 @@ static inline int ceiling_fp(int32_t x) return ret; } -static inline int32_t percent_fp(int percent) -{ - return div_fp(percent, 100); -} - static inline u64 mul_ext_fp(u64 x, u64 y) { return (x * y) >> EXT_FRAC_BITS; @@ -91,11 +86,6 @@ static inline u64 div_ext_fp(u64 x, u64 y) return div64_u64(x << EXT_FRAC_BITS, y); } -static inline int32_t percent_ext_fp(int percent) -{ - return div_ext_fp(percent, 100); -} - /** * struct sample - Store performance sample * @core_avg_perf: Ratio of APERF/MPERF which is the actual average @@ -2653,12 +2643,13 @@ static void intel_cpufreq_adjust_perf(unsigned int cpunum, unsigned long capacity) { struct cpudata *cpu = all_cpu_data[cpunum]; + u64 hwp_cap = READ_ONCE(cpu->hwp_cap_cached); int old_pstate = cpu->pstate.current_pstate; int cap_pstate, min_pstate, max_pstate, target_pstate; update_turbo_state(); - cap_pstate = global.turbo_disabled ? cpu->pstate.max_pstate : - cpu->pstate.turbo_pstate; + cap_pstate = global.turbo_disabled ? HWP_GUARANTEED_PERF(hwp_cap) : + HWP_HIGHEST_PERF(hwp_cap); /* Optimization: Avoid unnecessary divisions. */ |