linux-kernel - [PATCH 17/23] arch: arm: use generic irq error counter

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201218143122.19459-18-info@metux.net>
Date:   Fri, 18 Dec 2020 15:31:16 +0100
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     linux-kernel@...r.kernel.org
Cc:     mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, catalin.marinas@....com,
        will@...nel.org, msalter@...hat.com, jacquiot.aurelien@...il.com,
        gerg@...ux-m68k.org, geert@...ux-m68k.org,
        tsbogend@...ha.franken.de, James.Bottomley@...senPartnership.com,
        deller@....de, benh@...nel.crashing.org, paulus@...ba.org,
        ysato@...rs.sourceforge.jp, dalias@...c.org, davem@...emloft.net,
        tglx@...utronix.de, bp@...en8.de, x86@...nel.org, hpa@...or.com,
        linus.walleij@...aro.org, bgolaszewski@...libre.com,
        maz@...nel.org, tony@...mide.com, arnd@...db.de,
        linux-alpha@...r.kernel.org, linux-c6x-dev@...ux-c6x.org,
        linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: [PATCH 17/23] arch: arm: use generic irq error counter

Use the newly introduced irq error counter, that's already maintained
by all callers of ack_bad_irq(), in order to remove duplicate code.

Signed-off-by: Enrico Weigelt, metux IT consult <info@...ux.net>
---
 arch/arm/include/asm/hardirq.h  | 2 +-
 arch/arm/include/asm/hw_irq.h   | 6 ------
 arch/arm/kernel/irq.c           | 6 ++----
 drivers/irqchip/irq-omap-intc.c | 5 ++---
 4 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index 706efafbf972..d9ae8998240d 100644
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -5,7 +5,7 @@
 #include <asm/irq.h>
 
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED	1
-#define ack_bad_irq ack_bad_irq
+#define ack_bad_irq(irq)
 
 #include <asm-generic/hardirq.h>
 
diff --git a/arch/arm/include/asm/hw_irq.h b/arch/arm/include/asm/hw_irq.h
index 5305c7e33aee..adbbeb11b930 100644
--- a/arch/arm/include/asm/hw_irq.h
+++ b/arch/arm/include/asm/hw_irq.h
@@ -5,12 +5,6 @@
 #ifndef _ARCH_ARM_HW_IRQ_H
 #define _ARCH_ARM_HW_IRQ_H
 
-static inline void ack_bad_irq(int irq)
-{
-	extern unsigned long irq_err_count;
-	irq_err_count++;
-}
-
 #define ARCH_IRQ_INIT_FLAGS	(IRQ_NOREQUEST | IRQ_NOPROBE)
 
 #endif
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 698b6f636156..72c3b8ce74db 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -32,7 +32,7 @@
 #include <linux/kallsyms.h>
 #include <linux/proc_fs.h>
 #include <linux/export.h>
-
+#include <asm-generic/irq-err.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/cache-uniphier.h>
 #include <asm/outercache.h>
@@ -41,8 +41,6 @@
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
 
-unsigned long irq_err_count;
-
 int arch_show_interrupts(struct seq_file *p, int prec)
 {
 #ifdef CONFIG_FIQ
@@ -51,7 +49,7 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 #ifdef CONFIG_SMP
 	show_ipi_list(p, prec);
 #endif
-	seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_count);
+	seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_get());
 	return 0;
 }
 
diff --git a/drivers/irqchip/irq-omap-intc.c b/drivers/irqchip/irq-omap-intc.c
index d360a6eddd6d..2682c6e814c2 100644
--- a/drivers/irqchip/irq-omap-intc.c
+++ b/drivers/irqchip/irq-omap-intc.c
@@ -15,7 +15,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
-
+#include <asm-generic/irq-err.h>
 #include <asm/exception.h>
 #include <linux/irqchip.h>
 #include <linux/irqdomain.h>
@@ -328,7 +328,6 @@ static int __init omap_init_irq(u32 base, struct device_node *node)
 static asmlinkage void __exception_irq_entry
 omap_intc_handle_irq(struct pt_regs *regs)
 {
-	extern unsigned long irq_err_count;
 	u32 irqnr;
 
 	irqnr = intc_readl(INTC_SIR);
@@ -351,7 +350,7 @@ omap_intc_handle_irq(struct pt_regs *regs)
 	 */
 	if (unlikely((irqnr & SPURIOUSIRQ_MASK) == SPURIOUSIRQ_MASK)) {
 		pr_err_once("%s: spurious irq!\n", __func__);
-		irq_err_count++;
+		irq_err_inc();
 		omap_ack_irq(NULL);
 		return;
 	}
-- 
2.11.0