Patch "parisc: Fix self-detected CPU stall warnings on Mako machines" has been added to the 4.8-stable tree
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This is a note to let you know that I've just added the patch titled
parisc: Fix self-detected CPU stall warnings on Mako machines
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-fix-self-detected-cpu-stall-warnings-on-mako-machines.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
92420bd0d01f040bbf754e1d090be49ca6a1c8d6Mon Sep 17 00:00:00 2001
From: Helge Deller <[email protected]>
Date: Sat, 24 Sep 2016 22:22:12 +0200
Subject: parisc: Fix self-detected CPU stall warnings on Mako machines
From: Helge Deller <[email protected]>
commit 92420bd0d01f040bbf754e1d090be49ca6a1c8d6 upstream.
The config option HAVE_UNSTABLE_SCHED_CLOCK is set automatically when compiling for SMP. There is no need to clear the stable-clock flag via clear_sched_clock_stable() when starting secondary CPUs, and even worse, clearing it triggers wrong self-detected CPU stall warnings on 64bit Mako machines.
--- arch/parisc/kernel/time.c | 6 ------ 1 file changed, 6 deletions(-)
arch/parisc/kernel/time.c +0 -6
@@ -226,12 +226,6 @@ void __init start_cpu_itimer(void)unsigned int cpu =smp_processor_id ();unsigned long next_tick =mfctl (16 ) + clocktick; -#if defined(CONFIG_HAVE_UNSTABLE_SCHED_CLOCK ) && defined(CONFIG_64BIT ) -/* With multiple 64bit CPUs online, the cr16's are not syncronized. */ -if (cpu !=0 ) -clear_sched_clock_stable (); -#endif -mtctl (next_tick,16 );/* kick off Interval Timer (CR16) */ per_cpu (cpu_data, cpu).it_value = next_tick;
Patches currently in stable-queue which might be from [email protected] are
queue-4.8/parisc-fix-kernel-memory-layout-regarding-position-of-__gp.patch queue-4.8/parisc-increase-initial-kernel-mapping-size.patch queue-4.8/parisc-increase-kernel_initial_size-for-32-bit-smp-kernels.patch queue-4.8/parisc-fix-self-detected-cpu-stall-warnings-on-mako-machines.patch