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authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-01 13:38:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-01 13:38:55 -0700
commitd861f6e6829ce586bcf5823ab7d348f09be3c8fb (patch)
treee3743eee3537371fd23aaf1fe8bf3b42a610ce0a
parent58ff3b7604a461a766a84348e620834dce9834a9 (diff)
parentfb7fb84a0c4e8021ddecb157802d58241a3f1a40 (diff)
Merge tag 'smp-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP updates from Ingo Molnar: "Misc cleanups in the SMP hotplug and cross-call code" * tag 'smp-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Remove __freeze_secondary_cpus() cpu/hotplug: Remove disable_nonboot_cpus() cpu/hotplug: Fix a typo in comment "broadacasted"->"broadcasted" smp: Use smp_call_func_t in on_each_cpu()
-rw-r--r--Documentation/power/suspend-and-cpuhotplug.rst6
-rw-r--r--arch/x86/kernel/smpboot.c4
-rw-r--r--arch/x86/power/cpu.c2
-rw-r--r--include/linux/cpu.h19
-rw-r--r--include/linux/smp.h4
-rw-r--r--kernel/cpu.c20
-rw-r--r--kernel/smp.c2
-rw-r--r--tools/power/pm-graph/config/custom-timeline-functions.cfg2
-rwxr-xr-xtools/power/pm-graph/sleepgraph.py2
9 files changed, 25 insertions, 36 deletions
diff --git a/Documentation/power/suspend-and-cpuhotplug.rst b/Documentation/power/suspend-and-cpuhotplug.rst
index 572d968c5375..ebedb6c75db9 100644
--- a/Documentation/power/suspend-and-cpuhotplug.rst
+++ b/Documentation/power/suspend-and-cpuhotplug.rst
@@ -48,7 +48,7 @@ More details follow::
|
|
v
- disable_nonboot_cpus()
+ freeze_secondary_cpus()
/* start */
|
v
@@ -83,7 +83,7 @@ More details follow::
Release cpu_add_remove_lock
|
v
- /* disable_nonboot_cpus() complete */
+ /* freeze_secondary_cpus() complete */
|
v
Do suspend
@@ -93,7 +93,7 @@ More details follow::
Resuming back is likewise, with the counterparts being (in the order of
execution during resume):
-* enable_nonboot_cpus() which involves::
+* thaw_secondary_cpus() which involves::
| Acquire cpu_add_remove_lock
| Decrease cpu_hotplug_disabled, thereby enabling regular cpu hotplug
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 2f24c334a938..49d7782353b6 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1384,12 +1384,12 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
speculative_store_bypass_ht_init();
}
-void arch_enable_nonboot_cpus_begin(void)
+void arch_thaw_secondary_cpus_begin(void)
{
set_mtrr_aps_delayed_init();
}
-void arch_enable_nonboot_cpus_end(void)
+void arch_thaw_secondary_cpus_end(void)
{
mtrr_aps_init();
}
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index aaff9ed7ff45..fc3b757afb2c 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -307,7 +307,7 @@ int hibernate_resume_nonboot_cpu_disable(void)
if (ret)
return ret;
smp_ops.play_dead = resume_play_dead;
- ret = disable_nonboot_cpus();
+ ret = freeze_secondary_cpus(0);
smp_ops.play_dead = play_dead;
return ret;
}
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index beaed2dc269e..52692587f7fe 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -144,18 +144,8 @@ static inline void get_online_cpus(void) { cpus_read_lock(); }
static inline void put_online_cpus(void) { cpus_read_unlock(); }
#ifdef CONFIG_PM_SLEEP_SMP
-int __freeze_secondary_cpus(int primary, bool suspend);
-static inline int freeze_secondary_cpus(int primary)
-{
- return __freeze_secondary_cpus(primary, true);
-}
-
-static inline int disable_nonboot_cpus(void)
-{
- return __freeze_secondary_cpus(0, false);
-}
-
-void enable_nonboot_cpus(void);
+extern int freeze_secondary_cpus(int primary);
+extern void thaw_secondary_cpus(void);
static inline int suspend_disable_secondary_cpus(void)
{
@@ -168,12 +158,11 @@ static inline int suspend_disable_secondary_cpus(void)
}
static inline void suspend_enable_secondary_cpus(void)
{
- return enable_nonboot_cpus();
+ return thaw_secondary_cpus();
}
#else /* !CONFIG_PM_SLEEP_SMP */
-static inline int disable_nonboot_cpus(void) { return 0; }
-static inline void enable_nonboot_cpus(void) {}
+static inline void thaw_secondary_cpus(void) {}
static inline int suspend_disable_secondary_cpus(void) { return 0; }
static inline void suspend_enable_secondary_cpus(void) { }
#endif /* !CONFIG_PM_SLEEP_SMP */
diff --git a/include/linux/smp.h b/include/linux/smp.h
index cbc9162689d0..04019872c7bc 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -227,8 +227,8 @@ static inline int get_boot_cpu_id(void)
*/
extern void arch_disable_smp_support(void);
-extern void arch_enable_nonboot_cpus_begin(void);
-extern void arch_enable_nonboot_cpus_end(void);
+extern void arch_thaw_secondary_cpus_begin(void);
+extern void arch_thaw_secondary_cpus_end(void);
void smp_setup_processor_id(void);
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 2371292f30b0..9f892144db6b 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -432,7 +432,7 @@ static inline bool cpu_smt_allowed(unsigned int cpu)
/*
* On x86 it's required to boot all logical CPUs at least once so
* that the init code can get a chance to set CR4.MCE on each
- * CPU. Otherwise, a broadacasted MCE observing CR4.MCE=0b on any
+ * CPU. Otherwise, a broadcasted MCE observing CR4.MCE=0b on any
* core will shutdown the machine.
*/
return !cpumask_test_cpu(cpu, &cpus_booted_once_mask);
@@ -1327,7 +1327,7 @@ void bringup_nonboot_cpus(unsigned int setup_max_cpus)
#ifdef CONFIG_PM_SLEEP_SMP
static cpumask_var_t frozen_cpus;
-int __freeze_secondary_cpus(int primary, bool suspend)
+int freeze_secondary_cpus(int primary)
{
int cpu, error = 0;
@@ -1352,7 +1352,7 @@ int __freeze_secondary_cpus(int primary, bool suspend)
if (cpu == primary)
continue;
- if (suspend && pm_wakeup_pending()) {
+ if (pm_wakeup_pending()) {
pr_info("Wakeup pending. Abort CPU freeze\n");
error = -EBUSY;
break;
@@ -1376,8 +1376,8 @@ int __freeze_secondary_cpus(int primary, bool suspend)
/*
* Make sure the CPUs won't be enabled by someone else. We need to do
- * this even in case of failure as all disable_nonboot_cpus() users are
- * supposed to do enable_nonboot_cpus() on the failure path.
+ * this even in case of failure as all freeze_secondary_cpus() users are
+ * supposed to do thaw_secondary_cpus() on the failure path.
*/
cpu_hotplug_disabled++;
@@ -1385,15 +1385,15 @@ int __freeze_secondary_cpus(int primary, bool suspend)
return error;
}
-void __weak arch_enable_nonboot_cpus_begin(void)
+void __weak arch_thaw_secondary_cpus_begin(void)
{
}
-void __weak arch_enable_nonboot_cpus_end(void)
+void __weak arch_thaw_secondary_cpus_end(void)
{
}
-void enable_nonboot_cpus(void)
+void thaw_secondary_cpus(void)
{
int cpu, error;
@@ -1405,7 +1405,7 @@ void enable_nonboot_cpus(void)
pr_info("Enabling non-boot CPUs ...\n");
- arch_enable_nonboot_cpus_begin();
+ arch_thaw_secondary_cpus_begin();
for_each_cpu(cpu, frozen_cpus) {
trace_suspend_resume(TPS("CPU_ON"), cpu, true);
@@ -1418,7 +1418,7 @@ void enable_nonboot_cpus(void)
pr_warn("Error taking CPU%d up: %d\n", cpu, error);
}
- arch_enable_nonboot_cpus_end();
+ arch_thaw_secondary_cpus_end();
cpumask_clear(frozen_cpus);
out:
diff --git a/kernel/smp.c b/kernel/smp.c
index 786092aabdcd..84303197caf9 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -620,7 +620,7 @@ void __init smp_init(void)
* early_boot_irqs_disabled is set. Use local_irq_save/restore() instead
* of local_irq_disable/enable().
*/
-void on_each_cpu(void (*func) (void *info), void *info, int wait)
+void on_each_cpu(smp_call_func_t func, void *info, int wait)
{
unsigned long flags;
diff --git a/tools/power/pm-graph/config/custom-timeline-functions.cfg b/tools/power/pm-graph/config/custom-timeline-functions.cfg
index 4f80ad7d7275..962e5768681c 100644
--- a/tools/power/pm-graph/config/custom-timeline-functions.cfg
+++ b/tools/power/pm-graph/config/custom-timeline-functions.cfg
@@ -125,7 +125,7 @@ acpi_suspend_begin:
suspend_console:
acpi_pm_prepare:
syscore_suspend:
-arch_enable_nonboot_cpus_end:
+arch_thaw_secondary_cpus_end:
syscore_resume:
acpi_pm_finish:
resume_console:
diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
index 9b0404d10768..602e64b68ba7 100755
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -198,7 +198,7 @@ class SystemValues:
'suspend_console': {},
'acpi_pm_prepare': {},
'syscore_suspend': {},
- 'arch_enable_nonboot_cpus_end': {},
+ 'arch_thaw_secondary_cpus_end': {},
'syscore_resume': {},
'acpi_pm_finish': {},
'resume_console': {},