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Commit d0c3be80 authored May 18, 2013 by Helge Deller

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



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

Signed-off-by: Helge Deller <deller@gmx.de>

parent fbb46caa

arch/parisc/include/asm/hardirq.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -28,6 +28,8 @@ typedef struct {
	unsigned int irq_resched_count;		unsigned int irq_resched_count;
	unsigned int irq_call_count;		unsigned int irq_call_count;
	#endif		#endif
			unsigned int irq_unaligned_count;
			unsigned int irq_fpassist_count;
	unsigned int irq_tlb_count;		unsigned int irq_tlb_count;
	} ____cacheline_aligned irq_cpustat_t;		} ____cacheline_aligned irq_cpustat_t;

arch/parisc/kernel/irq.c

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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_printf(p, "%10u ", irq_stats(j)->irq_call_count);
	seq_puts(p, " Function call interrupts\n");		seq_puts(p, " Function call interrupts\n");
	#endif		#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");		seq_printf(p, "%*s: ", prec, "TLB");
	for_each_online_cpu(j)		for_each_online_cpu(j)
	seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);		seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);

arch/parisc/kernel/traps.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -646,6 +646,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
	case 14:		case 14:
	/* Assist Exception Trap, i.e. floating point exception. */		/* Assist Exception Trap, i.e. floating point exception. */
	die_if_kernel("Floating point exception", regs, 0); /* quiet */		die_if_kernel("Floating point exception", regs, 0); /* quiet */
			__inc_irq_stat(irq_fpassist_count);
	handle_fpe(regs);		handle_fpe(regs);
	return;		return;

arch/parisc/kernel/unaligned.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -27,6 +27,7 @@
	#include <linux/signal.h>		#include <linux/signal.h>
	#include <linux/ratelimit.h>		#include <linux/ratelimit.h>
	#include <asm/uaccess.h>		#include <asm/uaccess.h>
			#include <asm/hardirq.h>

	/* #define DEBUG_UNALIGNED 1 */		/* #define DEBUG_UNALIGNED 1 */

	@@ -454,6 +455,8 @@ void handle_unaligned(struct pt_regs *regs)
	struct siginfo si;		struct siginfo si;
	register int flop=0; /* true if this is a flop */		register int flop=0; /* true if this is a flop */

			__inc_irq_stat(irq_unaligned_count);

	/* log a message with pacing */		/* log a message with pacing */
	if (user_mode(regs)) {		if (user_mode(regs)) {
	if (current->thread.flags & PARISC_UAC_SIGBUS) {		if (current->thread.flags & PARISC_UAC_SIGBUS) {