diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0054-cpufreq-drop-K8-s-driver-from-beeing-selected.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/debian/patches-rt/0054-cpufreq-drop-K8-s-driver-from-beeing-selected.patch b/debian/patches-rt/0054-cpufreq-drop-K8-s-driver-from-beeing-selected.patch new file mode 100644 index 000000000..d93572692 --- /dev/null +++ b/debian/patches-rt/0054-cpufreq-drop-K8-s-driver-from-beeing-selected.patch @@ -0,0 +1,39 @@ +From b7705efed15774a4424b72dc695c15636b458a3b Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Thu, 9 Apr 2015 15:23:01 +0200 +Subject: [PATCH 054/347] cpufreq: drop K8's driver from beeing selected +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +Ralf posted a picture of a backtrace from + +| powernowk8_target_fn() -> transition_frequency_fidvid() and then at the +| end: +| 932 policy = cpufreq_cpu_get(smp_processor_id()); +| 933 cpufreq_cpu_put(policy); + +crashing the system on -RT. I assumed that policy was a NULL pointer but +was rulled out. Since Ralf can't do any more investigations on this and +I have no machine with this, I simply switch it off. + +Reported-by: Ralf Mardorf <ralf.mardorf@alice-dsl.net> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + drivers/cpufreq/Kconfig.x86 | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 +index 35f71825b7f3..bb4a6160d0f7 100644 +--- a/drivers/cpufreq/Kconfig.x86 ++++ b/drivers/cpufreq/Kconfig.x86 +@@ -125,7 +125,7 @@ config X86_POWERNOW_K7_ACPI + + config X86_POWERNOW_K8 + tristate "AMD Opteron/Athlon64 PowerNow!" +- depends on ACPI && ACPI_PROCESSOR && X86_ACPI_CPUFREQ ++ depends on ACPI && ACPI_PROCESSOR && X86_ACPI_CPUFREQ && !PREEMPT_RT_BASE + help + This adds the CPUFreq driver for K8/early Opteron/Athlon64 processors. + Support for K10 and newer processors is now in acpi-cpufreq. +-- +2.36.1 + |