diff options
Diffstat (limited to 'debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch')
| -rw-r--r-- | debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch deleted file mode 100644 index c6499cb76..000000000 --- a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch +++ /dev/null @@ -1,89 +0,0 @@ -From: Daniel Wagner <wagi@monom.org> -Date: Tue, 17 Feb 2015 09:37:44 +0100 -Subject: thermal: Defer thermal wakups to threads -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patches-5.0.10-rt7.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/intel/x86_pkg_temp_thermal.c | 28 ++++++++++++++++++++++++++- - 1 file changed, 27 insertions(+), 1 deletion(-) - ---- a/drivers/thermal/intel/x86_pkg_temp_thermal.c -+++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c -@@ -29,6 +29,7 @@ - #include <linux/pm.h> - #include <linux/thermal.h> - #include <linux/debugfs.h> -+#include <linux/kthread.h> - #include <asm/cpu_device_id.h> - #include <asm/mce.h> - -@@ -329,7 +330,7 @@ static void pkg_thermal_schedule_work(in - schedule_delayed_work_on(cpu, work, ms); - } - --static int pkg_thermal_notify(u64 msr_val) -+static void pkg_thermal_notify_work(struct kthread_work *work) - { - int cpu = smp_processor_id(); - struct pkg_device *pkgdev; -@@ -348,8 +349,32 @@ static int pkg_thermal_notify(u64 msr_va - } - - spin_unlock_irqrestore(&pkg_temp_lock, flags); -+} -+ -+#ifdef CONFIG_PREEMPT_RT_FULL -+static DEFINE_KTHREAD_WORK(notify_work, pkg_thermal_notify_work); -+ -+static int pkg_thermal_notify(u64 msr_val) -+{ -+ kthread_schedule_work(¬ify_work); -+ return 0; -+} -+ -+static void pkg_thermal_notify_flush(void) -+{ -+ kthread_flush_work(¬ify_work); -+} -+ -+#else /* !CONFIG_PREEMPT_RT_FULL */ -+ -+static void pkg_thermal_notify_flush(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) - { -@@ -548,6 +573,7 @@ static void __exit pkg_temp_thermal_exit - platform_thermal_package_rate_control = NULL; - - cpuhp_remove_state(pkg_thermal_hp_state); -+ pkg_thermal_notify_flush(); - debugfs_remove_recursive(debugfs); - kfree(packages); - } |