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Date: Fri, 11 Aug 2017 02:33:05 +0100 From: Ben Hutchings <ben.hutchings@...ethink.co.uk> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org, Helge Deller <deller@....de> Subject: Re: [PATCH 4.4 01/58] parisc: Increase thread and stack size to 32kb On Wed, 2017-08-09 at 12:41 -0700, Greg Kroah-Hartman wrote: > 4.4-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Helge Deller <deller@....de> > > commit 8f8201dfed91a43ac38c899c82f81eef3d36afd9 upstream. > > Since kernel 4.11 the thread and irq stacks on parisc randomly overflow > the default size of 16k. The reason why stack usage suddenly grew is yet > unknown. So we don't need this for 4.4. Ben. > Signed-off-by: Helge Deller <deller@....de> > Signed-off-by: Helge Deller <deller@....de> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> > > --- > arch/parisc/include/asm/thread_info.h | 2 +- > arch/parisc/kernel/irq.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > --- a/arch/parisc/include/asm/thread_info.h > +++ b/arch/parisc/include/asm/thread_info.h > @@ -34,7 +34,7 @@ struct thread_info { > > /* thread information allocation */ > > -#define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ > +#define THREAD_SIZE_ORDER 3 /* PA-RISC requires at least 32k stack */ > /* Be sure to hunt all references to this down when you change the size of > * the kernel stack */ > #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) > --- a/arch/parisc/kernel/irq.c > +++ b/arch/parisc/kernel/irq.c > @@ -380,7 +380,7 @@ static inline int eirr_to_irq(unsigned l > /* > * IRQ STACK - used for irq handler > */ > -#define IRQ_STACK_SIZE (4096 << 2) /* 16k irq stack size */ > +#define IRQ_STACK_SIZE (4096 << 3) /* 32k irq stack size */ > > union irq_stack_union { > unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)]; > > -- Ben Hutchings Software Developer, Codethink Ltd.
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