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Commit 6d169984 authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy Committed by Maria Yu
Browse files

ARM: gic: Add support for logging interrupts in RTB 



To help with the debug of interrupt storms and problems during IRQ
handling, log the IRQ number in RTB for each interrupt that fires.

Change-Id: Icea5ded0f7d66ba3c7608793e7c25218e2a64e0c
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
[abhimany: resolve trivial merge conflicts]
Signed-off-by: default avatarAbhimanyu Kapur <abhimany@codeaurora.org>
[aiquny: resolve trivial merge conflicts]
Signed-off-by: default avatarMaria Yu <aiquny@codeaurora.org>
parent 61147a12

drivers/irqchip/irq-gic.c

+3 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ 
#include <linux/irqchip.h>

#include <linux/irqchip/chained_irq.h>

#include <linux/irqchip/arm-gic.h>

#include <linux/msm_rtb.h>



#include <asm/cputype.h>

#include <asm/irq.h>
@@ -364,6 +365,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs) 
				writel_relaxed_no_log(irqstat,

						cpu_base + GIC_CPU_EOI);

			handle_domain_irq(gic->domain, irqnr, regs);

			uncached_logk(LOGK_IRQ, (void *)(uintptr_t)irqnr);

			continue;

		}

		if (irqnr < 16) {
@@ -382,6 +384,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs) 
			smp_rmb();

			handle_IPI(irqnr, regs);

#endif

			uncached_logk(LOGK_IRQ, (void *)(uintptr_t)irqnr);

			continue;

		}

		break;