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From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Date: Fri, 20 Sep 2019 17:50:53 -0400
Subject: [PATCH 280/351] revert-thermal
Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=e5d1f189fd154780b94568b1d742c74815d52b62
Revert: thermal: Defer thermal wakups to threads
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
drivers/thermal/x86_pkg_temp_thermal.c | 52 ++------------------------
1 file changed, 3 insertions(+), 49 deletions(-)
diff --git a/drivers/thermal/x86_pkg_temp_thermal.c b/drivers/thermal/x86_pkg_temp_thermal.c
index a5991cbb408f..1ef937d799e4 100644
--- a/drivers/thermal/x86_pkg_temp_thermal.c
+++ b/drivers/thermal/x86_pkg_temp_thermal.c
@@ -29,7 +29,6 @@
#include <linux/pm.h>
#include <linux/thermal.h>
#include <linux/debugfs.h>
-#include <linux/swork.h>
#include <asm/cpu_device_id.h>
#include <asm/mce.h>
@@ -330,7 +329,7 @@ static void pkg_thermal_schedule_work(int cpu, struct delayed_work *work)
schedule_delayed_work_on(cpu, work, ms);
}
-static void pkg_thermal_notify_work(struct swork_event *event)
+static int pkg_thermal_notify(u64 msr_val)
{
int cpu = smp_processor_id();
struct pkg_device *pkgdev;
@@ -349,47 +348,9 @@ static void pkg_thermal_notify_work(struct swork_event *event)
}
spin_unlock_irqrestore(&pkg_temp_lock, flags);
-}
-
-#ifdef CONFIG_PREEMPT_RT_FULL
-static struct swork_event notify_work;
-
-static int pkg_thermal_notify_work_init(void)
-{
- int err;
-
- err = swork_get();
- if (err)
- return err;
-
- INIT_SWORK(¬ify_work, pkg_thermal_notify_work);
return 0;
}
-static void pkg_thermal_notify_work_cleanup(void)
-{
- swork_put();
-}
-
-static int pkg_thermal_notify(u64 msr_val)
-{
- swork_queue(¬ify_work);
- return 0;
-}
-
-#else /* !CONFIG_PREEMPT_RT_FULL */
-
-static int pkg_thermal_notify_work_init(void) { return 0; }
-
-static void pkg_thermal_notify_work_cleanup(void) { }
-
-static int pkg_thermal_notify(u64 msr_val)
-{
- pkg_thermal_notify_work(NULL);
- return 0;
-}
-#endif /* CONFIG_PREEMPT_RT_FULL */
-
static int pkg_temp_thermal_device_add(unsigned int cpu)
{
int pkgid = topology_logical_package_id(cpu);
@@ -554,16 +515,11 @@ static int __init pkg_temp_thermal_init(void)
if (!x86_match_cpu(pkg_temp_thermal_ids))
return -ENODEV;
- if (!pkg_thermal_notify_work_init())
- return -ENODEV;
-
max_packages = topology_max_packages();
packages = kcalloc(max_packages, sizeof(struct pkg_device *),
GFP_KERNEL);
- if (!packages) {
- ret = -ENOMEM;
- goto err;
- }
+ if (!packages)
+ return -ENOMEM;
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "thermal/x86_pkg:online",
pkg_thermal_cpu_online, pkg_thermal_cpu_offline);
@@ -581,7 +537,6 @@ static int __init pkg_temp_thermal_init(void)
return 0;
err:
- pkg_thermal_notify_work_cleanup();
kfree(packages);
return ret;
}
@@ -595,7 +550,6 @@ static void __exit pkg_temp_thermal_exit(void)
cpuhp_remove_state(pkg_thermal_hp_state);
debugfs_remove_recursive(debugfs);
kfree(packages);
- pkg_thermal_notify_work_cleanup();
}
module_exit(pkg_temp_thermal_exit)
|
