3.9-stable review patch. If anyone has any objections, please let me know.
------------------
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) {
--
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