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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-06-07 10:48:57 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-06-07 10:48:57 +0200
commita964d23c94e8177c501fc9a37dcf1f0dd2750527 (patch)
tree0ed074be3f49c598167e3e134a0cc4f0f49b2ea6 /kernel
parenta61373476127edac8bcc5ee9d68a74dc1b864f53 (diff)
parentec527c318036a65a083ef68d8ba95789d2212246 (diff)
Merge branch 'pm-x86'
* pm-x86: x86/power: Fix 'nosmt' vs hibernation triple fault during resume x86: intel_epb: Do not build when CONFIG_PM is unset
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cpu.c4
-rw-r--r--kernel/power/hibernate.c9
2 files changed, 11 insertions, 2 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index f2ef10460698..077fde6fb953 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2061,7 +2061,7 @@ static void cpuhp_online_cpu_device(unsigned int cpu)
kobject_uevent(&dev->kobj, KOBJ_ONLINE);
}
-static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
+int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
{
int cpu, ret = 0;
@@ -2093,7 +2093,7 @@ static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
return ret;
}
-static int cpuhp_smt_enable(void)
+int cpuhp_smt_enable(void)
{
int cpu, ret = 0;
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 97522630b1b6..356bcc925833 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -257,6 +257,11 @@ void swsusp_show_speed(ktime_t start, ktime_t stop,
(kps % 1000) / 10);
}
+__weak int arch_resume_nosmt(void)
+{
+ return 0;
+}
+
/**
* create_image - Create a hibernation image.
* @platform_mode: Whether or not to use the platform driver.
@@ -324,6 +329,10 @@ static int create_image(int platform_mode)
Enable_cpus:
suspend_enable_secondary_cpus();
+ /* Allow architectures to do nosmt-specific post-resume dances */
+ if (!in_suspend)
+ error = arch_resume_nosmt();
+
Platform_finish:
platform_finish(platform_mode);