From: shc_work@mail.ru (Alexander Shiyan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH RESEND 11/15] ARM: clps711x: Optimize interrupt handling
Date: Wed, 5 Jun 2013 09:59:19 +0400 [thread overview]
Message-ID: <1370411967-29451-12-git-send-email-shc_work@mail.ru> (raw)
In-Reply-To: <1370411967-29451-1-git-send-email-shc_work@mail.ru>
This patch modify interrupt handler for processing all penging interrupts
at once.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
arch/arm/mach-clps711x/common.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
diff --git a/arch/arm/mach-clps711x/common.c b/arch/arm/mach-clps711x/common.c
index bd65839..f6d1746 100644
--- a/arch/arm/mach-clps711x/common.c
+++ b/arch/arm/mach-clps711x/common.c
@@ -215,7 +215,7 @@ void __init clps711x_init_irq(void)
}
}
-inline u32 fls16(u32 x)
+static inline u32 fls16(u32 x)
{
u32 r = 15;
@@ -239,18 +239,24 @@ inline u32 fls16(u32 x)
asmlinkage void __exception_irq_entry clps711x_handle_irq(struct pt_regs *regs)
{
- u32 irqstat;
- void __iomem *base = CLPS711X_VIRT_BASE;
+ do {
+ u32 irqstat;
+ void __iomem *base = CLPS711X_VIRT_BASE;
+
+ irqstat = readw_relaxed(base + INTSR1) &
+ readw_relaxed(base + INTMR1);
+ if (irqstat)
+ handle_IRQ(fls16(irqstat), regs);
+
+ irqstat = readw_relaxed(base + INTSR2) &
+ readw_relaxed(base + INTMR2);
+ if (irqstat) {
+ handle_IRQ(fls16(irqstat) + 16, regs);
+ continue;
+ }
- irqstat = readl_relaxed(base + INTSR1) & readl_relaxed(base + INTMR1);
- if (irqstat) {
- handle_IRQ(fls16(irqstat), regs);
- return;
- }
-
- irqstat = readl_relaxed(base + INTSR2) & readl_relaxed(base + INTMR2);
- if (likely(irqstat))
- handle_IRQ(fls16(irqstat) + 16, regs);
+ break;
+ } while (1);
}
static u32 notrace clps711x_sched_clock_read(void)
--
1.8.1.5
next prev parent reply other threads:[~2013-06-05 5:59 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-05 5:59 [PATCH RESEND 01/15] ARM: clps711x: Remove NEED_MACH_MEMORY_H dependency Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND v2 2/3] ARM: clps711x: Re-add GPIO support Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 02/15] ARM: clps711x: Set PLL clock to zero if we work from 13 mHz source Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 03/15] ARM: clps711x: autcpu12: Move LCD DPOT definitions to board file Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 04/15] ARM: clps711x: autcpu12: Add support for NOR flash Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 05/15] ARM: clps711x: autcpu12: Special driver for handling memory is removed Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 06/15] ARM: clps711x: autcpu12: Move remaining specific definitions to board file Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 07/15] ARM: clps711x: p720t: Define PLD registers as GPIOs Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 08/15] ARM: clps711x: Move specific definitions from hardware.h to boards files Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 09/15] ARM: clps711x: Replace "arch_initcall" in common code with ".init_early" Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 10/15] ARM: clps711x: Add clocksource framework Alexander Shiyan
2013-06-05 5:59 ` Alexander Shiyan [this message]
2013-06-05 5:59 ` [PATCH RESEND 12/15] ARM: clps711x: edb7211: Add support for I2C Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 13/15] ARM: clps711x: edb7211: Control LCD backlight via PWM Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 14/15] ARM: clps711x: Add support for SYSCON driver Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 15/15] ARM: clps711x: Update defconfig Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND v2 1/3] GPIO: clps711x: Rewrite driver for using generic GPIO code Alexander Shiyan
2013-06-17 6:24 ` Linus Walleij
2013-06-17 6:29 ` Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND v2 2/3] ARM: clps711x: Re-add GPIO support Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND v2 3/3] GPIO: clps711x: Add DT support Alexander Shiyan
2013-06-05 5:59 ` [PATCH RESEND 07/15] ARM: clps711x: p720t: Define PLD registers as GPIOs Alexander Shiyan
2013-06-19 16:18 ` [PATCH RESEND 01/15] ARM: clps711x: Remove NEED_MACH_MEMORY_H dependency Arnd Bergmann
2013-06-19 16:25 ` Re[2]: " Alexander Shiyan
2013-06-19 17:59 ` Arnd Bergmann
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