This is a note to let you know that I've just added the patch titled
parisc: show number of FPE and unaligned access handler calls in /proc/interrupts
to the 3.9-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-show-number-of-fpe-and-unaligned-access-handler-calls-in-proc-interrupts.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d0c3be806a3fe7f4abdb0f7e7287addb55e73f35 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Sat, 18 May 2013 19:35:44 +0000
Subject: parisc: show number of FPE and unaligned access handler calls in /proc/interrupts
From: Helge Deller <deller@xxxxxx>
commit d0c3be806a3fe7f4abdb0f7e7287addb55e73f35 upstream.
Show number of floating point assistant and unaligned access fixup
handler in /proc/interrupts file.
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/include/asm/hardirq.h | 2 ++
arch/parisc/kernel/irq.c | 8 ++++++++
arch/parisc/kernel/traps.c | 1 +
arch/parisc/kernel/unaligned.c | 3 +++
4 files changed, 14 insertions(+)
--- a/arch/parisc/include/asm/hardirq.h
+++ b/arch/parisc/include/asm/hardirq.h
@@ -28,6 +28,8 @@ typedef struct {
unsigned int irq_resched_count;
unsigned int irq_call_count;
#endif
+ unsigned int irq_unaligned_count;
+ unsigned int irq_fpassist_count;
unsigned int irq_tlb_count;
} ____cacheline_aligned irq_cpustat_t;
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -188,6 +188,14 @@ int arch_show_interrupts(struct seq_file
seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
seq_puts(p, " Function call interrupts\n");
#endif
+ seq_printf(p, "%*s: ", prec, "UAH");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", irq_stats(j)->irq_unaligned_count);
+ seq_puts(p, " Unaligned access handler traps\n");
+ seq_printf(p, "%*s: ", prec, "FPA");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", irq_stats(j)->irq_fpassist_count);
+ seq_puts(p, " Floating point assist traps\n");
seq_printf(p, "%*s: ", prec, "TLB");
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -652,6 +652,7 @@ void notrace handle_interruption(int cod
case 14:
/* Assist Exception Trap, i.e. floating point exception. */
die_if_kernel("Floating point exception", regs, 0); /* quiet */
+ __inc_irq_stat(irq_fpassist_count);
handle_fpe(regs);
return;
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -27,6 +27,7 @@
#include <linux/signal.h>
#include <linux/ratelimit.h>
#include <asm/uaccess.h>
+#include <asm/hardirq.h>
/* #define DEBUG_UNALIGNED 1 */
@@ -454,6 +455,8 @@ void handle_unaligned(struct pt_regs *re
struct siginfo si;
register int flop=0; /* true if this is a flop */
+ __inc_irq_stat(irq_unaligned_count);
+
/* log a message with pacing */
if (user_mode(regs)) {
if (current->thread.flags & PARISC_UAC_SIGBUS) {
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-3.9/parisc-tlb-flush-counting-fix-for-smp-and-up.patch
queue-3.9/parisc-show-number-of-fpe-and-unaligned-access-handler-calls-in-proc-interrupts.patch
queue-3.9/parisc-parport0-fix-this-legacy-no-device-port-driver.patch
queue-3.9/parisc-fix-kernel-bug-at-arch-parisc-include-asm-mmzone.h-50.patch
queue-3.9/parisc-kernel-using-strlcpy-instead-of-strcpy.patch
queue-3.9/parisc-implement-irq-stacks.patch
queue-3.9/parisc-provide-pci_mmap_page_range-for-parisc.patch
queue-3.9/parisc-more-irq-statistics-in-proc-interrupts.patch
queue-3.9/parisc-fix-serial-ports-on-c8000-workstation.patch
queue-3.9/parisc-remove-the-second-argument-of-kmap_atomic.patch
queue-3.9/parisc-add-kernel-stack-overflow-check.patch
queue-3.9/parisc-memory-overflow-name-length-is-too-short-for-using.patch
queue-3.9/parisc-implement-irq-stacks-part-2-v2.patch
queue-3.9/parisc-fix-irq-stack-on-up-and-smp.patch
queue-3.9/parisc-rename-config_pa7100-to-config_pa7000.patch
queue-3.9/parisc-make-interrupt-and-interruption-stack-allocation-reentrant.patch
queue-3.9/parisc-fix-kernel-bug-at-arch-parisc-include-asm-mmzone.h-50-part-2.patch
queue-3.9/parisc-add-rp5470-entry-to-machine-database.patch
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