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authorLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 04:41:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 04:41:08 +0300
commit1f2d9ffc7a5f916935749ffc6e93fb33bfe94d2f (patch)
treea5dabaa924d50867cbe347e20a7643b2850f11c0 /drivers/firmware
parenta2f0e7eee1344eb9f91b22bc72d9eb0a52b849c9 (diff)
parent7c4a5b89a0b5a57a64b601775b296abf77a9fe97 (diff)
downloadlinux-1f2d9ffc7a5f916935749ffc6e93fb33bfe94d2f.tar.xz
Merge tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar: - Improve the scalability of the CFS bandwidth unthrottling logic with large number of CPUs. - Fix & rework various cpuidle routines, simplify interaction with the generic scheduler code. Add __cpuidle methods as noinstr to objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks. - Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS, to query previously issued registrations. - Limit scheduler slice duration to the sysctl_sched_latency period, to improve scheduling granularity with a large number of SCHED_IDLE tasks. - Debuggability enhancement on sys_exit(): warn about disabled IRQs, but also enable them to prevent a cascade of followup problems and repeat warnings. - Fix the rescheduling logic in prio_changed_dl(). - Micro-optimize cpufreq and sched-util methods. - Micro-optimize ttwu_runnable() - Micro-optimize the idle-scanning in update_numa_stats(), select_idle_capacity() and steal_cookie_task(). - Update the RSEQ code & self-tests - Constify various scheduler methods - Remove unused methods - Refine __init tags - Documentation updates - Misc other cleanups, fixes * tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits) sched/rt: pick_next_rt_entity(): check list_entry sched/deadline: Add more reschedule cases to prio_changed_dl() sched/fair: sanitize vruntime of entity being placed sched/fair: Remove capacity inversion detection sched/fair: unlink misfit task from cpu overutilized objtool: mem*() are not uaccess safe cpuidle: Fix poll_idle() noinstr annotation sched/clock: Make local_clock() noinstr sched/clock/x86: Mark sched_clock() noinstr x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read() x86/atomics: Always inline arch_atomic64*() cpuidle: tracing, preempt: Squash _rcuidle tracing cpuidle: tracing: Warn about !rcu_is_watching() cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG cpuidle: drivers: firmware: psci: Dont instrument suspend code KVM: selftests: Fix build of rseq test exit: Detect and fix irq disabled state in oops cpuidle, arm64: Fix the ARM64 cpuidle logic cpuidle: mvebu: Fix duplicate flags assignment sched/fair: Limit sched slice duration ...
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/psci/psci.c42
1 files changed, 30 insertions, 12 deletions
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index 447ee4ea5c90..29619f49873a 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -108,9 +108,10 @@ bool psci_power_state_is_valid(u32 state)
return !(state & ~valid_mask);
}
-static unsigned long __invoke_psci_fn_hvc(unsigned long function_id,
- unsigned long arg0, unsigned long arg1,
- unsigned long arg2)
+static __always_inline unsigned long
+__invoke_psci_fn_hvc(unsigned long function_id,
+ unsigned long arg0, unsigned long arg1,
+ unsigned long arg2)
{
struct arm_smccc_res res;
@@ -118,9 +119,10 @@ static unsigned long __invoke_psci_fn_hvc(unsigned long function_id,
return res.a0;
}
-static unsigned long __invoke_psci_fn_smc(unsigned long function_id,
- unsigned long arg0, unsigned long arg1,
- unsigned long arg2)
+static __always_inline unsigned long
+__invoke_psci_fn_smc(unsigned long function_id,
+ unsigned long arg0, unsigned long arg1,
+ unsigned long arg2)
{
struct arm_smccc_res res;
@@ -128,7 +130,7 @@ static unsigned long __invoke_psci_fn_smc(unsigned long function_id,
return res.a0;
}
-static int psci_to_linux_errno(int errno)
+static __always_inline int psci_to_linux_errno(int errno)
{
switch (errno) {
case PSCI_RET_SUCCESS:
@@ -169,7 +171,8 @@ int psci_set_osi_mode(bool enable)
return psci_to_linux_errno(err);
}
-static int __psci_cpu_suspend(u32 fn, u32 state, unsigned long entry_point)
+static __always_inline int
+__psci_cpu_suspend(u32 fn, u32 state, unsigned long entry_point)
{
int err;
@@ -177,13 +180,15 @@ static int __psci_cpu_suspend(u32 fn, u32 state, unsigned long entry_point)
return psci_to_linux_errno(err);
}
-static int psci_0_1_cpu_suspend(u32 state, unsigned long entry_point)
+static __always_inline int
+psci_0_1_cpu_suspend(u32 state, unsigned long entry_point)
{
return __psci_cpu_suspend(psci_0_1_function_ids.cpu_suspend,
state, entry_point);
}
-static int psci_0_2_cpu_suspend(u32 state, unsigned long entry_point)
+static __always_inline int
+psci_0_2_cpu_suspend(u32 state, unsigned long entry_point)
{
return __psci_cpu_suspend(PSCI_FN_NATIVE(0_2, CPU_SUSPEND),
state, entry_point);
@@ -450,10 +455,12 @@ late_initcall(psci_debugfs_init)
#endif
#ifdef CONFIG_CPU_IDLE
-static int psci_suspend_finisher(unsigned long state)
+static noinstr int psci_suspend_finisher(unsigned long state)
{
u32 power_state = state;
- phys_addr_t pa_cpu_resume = __pa_symbol(cpu_resume);
+ phys_addr_t pa_cpu_resume;
+
+ pa_cpu_resume = __pa_symbol_nodebug((unsigned long)cpu_resume);
return psci_ops.cpu_suspend(power_state, pa_cpu_resume);
}
@@ -465,11 +472,22 @@ int psci_cpu_suspend_enter(u32 state)
if (!psci_power_state_loses_context(state)) {
struct arm_cpuidle_irq_context context;
+ ct_cpuidle_enter();
arm_cpuidle_save_irq_context(&context);
ret = psci_ops.cpu_suspend(state, 0);
arm_cpuidle_restore_irq_context(&context);
+ ct_cpuidle_exit();
} else {
+ /*
+ * ARM64 cpu_suspend() wants to do ct_cpuidle_*() itself.
+ */
+ if (!IS_ENABLED(CONFIG_ARM64))
+ ct_cpuidle_enter();
+
ret = cpu_suspend(state, psci_suspend_finisher);
+
+ if (!IS_ENABLED(CONFIG_ARM64))
+ ct_cpuidle_exit();
}
return ret;