Adding debian version 4.19.249-2.debian/4.19.249-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 137 insertions, 0 deletions

diff --git a/debian/patches-rt/0174-thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches-rt/0174-thermal-Defer-thermal-wakups-to-threads.patch
new file mode 100644
index 000000000..87e9fc777
--- /dev/null
+++ b/debian/patches-rt/0174-thermal-Defer-thermal-wakups-to-threads.patch
@@ -0,0 +1,137 @@
+From add227c3c4d74e71f3d02036aed9c6ceae6a6f6c Mon Sep 17 00:00:00 2001
+From: Daniel Wagner <wagi@monom.org>
+Date: Tue, 17 Feb 2015 09:37:44 +0100
+Subject: [PATCH 174/347] thermal: Defer thermal wakups to threads
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+On RT the spin lock in pkg_temp_thermal_platfrom_thermal_notify will
+call schedule while we run in irq context.
+
+[<ffffffff816850ac>] dump_stack+0x4e/0x8f
+[<ffffffff81680f7d>] __schedule_bug+0xa6/0xb4
+[<ffffffff816896b4>] __schedule+0x5b4/0x700
+[<ffffffff8168982a>] schedule+0x2a/0x90
+[<ffffffff8168a8b5>] rt_spin_lock_slowlock+0xe5/0x2d0
+[<ffffffff8168afd5>] rt_spin_lock+0x25/0x30
+[<ffffffffa03a7b75>] pkg_temp_thermal_platform_thermal_notify+0x45/0x134 [x86_pkg_temp_thermal]
+[<ffffffff8103d4db>] ? therm_throt_process+0x1b/0x160
+[<ffffffff8103d831>] intel_thermal_interrupt+0x211/0x250
+[<ffffffff8103d8c1>] smp_thermal_interrupt+0x21/0x40
+[<ffffffff8169415d>] thermal_interrupt+0x6d/0x80
+
+Let's defer the work to a kthread.
+
+Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
+[bigeasy: reoder init/denit position. TODO: flush swork on exit]
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/thermal/x86_pkg_temp_thermal.c | 52 ++++++++++++++++++++++++--
+ 1 file changed, 49 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/thermal/x86_pkg_temp_thermal.c b/drivers/thermal/x86_pkg_temp_thermal.c
+index 1ef937d799e4..a5991cbb408f 100644
+--- a/drivers/thermal/x86_pkg_temp_thermal.c
++++ b/drivers/thermal/x86_pkg_temp_thermal.c
+@@ -29,6 +29,7 @@
+ #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>
+ 
+@@ -329,7 +330,7 @@ static void pkg_thermal_schedule_work(int cpu, struct delayed_work *work)
+ 	schedule_delayed_work_on(cpu, work, ms);
+ }
+ 
+-static int pkg_thermal_notify(u64 msr_val)
++static void pkg_thermal_notify_work(struct swork_event *event)
+ {
+ 	int cpu = smp_processor_id();
+ 	struct pkg_device *pkgdev;
+@@ -348,9 +349,47 @@ static int pkg_thermal_notify(u64 msr_val)
+ 	}
+ 
+ 	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(&notify_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(&notify_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);
+@@ -515,11 +554,16 @@ 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)
+-		return -ENOMEM;
++	if (!packages) {
++		ret = -ENOMEM;
++		goto err;
++	}
+ 
+ 	ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "thermal/x86_pkg:online",
+ 				pkg_thermal_cpu_online,	pkg_thermal_cpu_offline);
+@@ -537,6 +581,7 @@ static int __init pkg_temp_thermal_init(void)
+ 	return 0;
+ 
+ err:
++	pkg_thermal_notify_work_cleanup();
+ 	kfree(packages);
+ 	return ret;
+ }
+@@ -550,6 +595,7 @@ 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)
+ 
+-- 
+2.36.1
+