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parisc: show number of FPE and unaligned access handler calls in /proc/interrupts

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Show number of floating point assistant and unaligned access fixup
handler in /proc/interrupts file.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2013-05-18 19:35:44 +00:00
parent fbb46caa1b
commit d0c3be806a
4 changed files with 14 additions and 0 deletions
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2
arch/parisc/include/asm/hardirq.h
View File

@ -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;

8
arch/parisc/kernel/irq.c
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@ -188,6 +188,14 @@ int arch_show_interrupts(struct seq_file *p, int prec)
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);

1
arch/parisc/kernel/traps.c
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@ -646,6 +646,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
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;

3
arch/parisc/kernel/unaligned.c
View File

@ -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 *regs)
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) {