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Message-Id: <1432116013-25902-11-git-send-email-jiang.liu@linux.intel.com>
Date: Wed, 20 May 2015 17:59:58 +0800
From: Jiang Liu <jiang.liu@...ux.intel.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Randy Dunlap <rdunlap@...radead.org>,
Yinghai Lu <yinghai@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Simon Horman <horms@...ge.net.au>,
Magnus Damm <magnus.damm@...il.com>,
Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Tony Luck <tony.luck@...el.com>, x86@...nel.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-sh@...r.kernel.org
Subject: [RFC v1 10/25] sh: intc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.
Also replace generic_handle_irq with generic_handle_irq_desc() to avoid
looking up irq_desc again.
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
drivers/sh/intc/core.c | 2 +-
drivers/sh/intc/virq.c | 14 ++++++++------
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 81f22980b2de..e4ca964ca840 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -67,7 +67,7 @@ void intc_set_prio_level(unsigned int irq, unsigned int level)
static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc)
{
- generic_handle_irq((unsigned int)irq_get_handler_data(irq));
+ generic_handle_irq_desc(irq, desc);
}
static void __init intc_register_irq(struct intc_desc *desc,
diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c
index 3dbc21696924..8083882a91c0 100644
--- a/drivers/sh/intc/virq.c
+++ b/drivers/sh/intc/virq.c
@@ -109,7 +109,7 @@ static int add_virq_to_pirq(unsigned int irq, unsigned int virq)
static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
struct intc_virq_list *entry, *vlist = irq_data_get_irq_handler_data(data);
struct intc_desc_int *d = get_intc_desc(irq);
@@ -118,12 +118,14 @@ static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
for_each_virq(entry, vlist) {
unsigned long addr, handle;
+ struct irq_desc *vdesc = irq_to_desc(entry->irq);
- handle = (unsigned long)irq_get_handler_data(entry->irq);
- addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
-
- if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
- generic_handle_irq(entry->irq);
+ if (vdesc) {
+ handle = (unsigned long)irq_desc_get_handler_data(vdesc);
+ addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
+ if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
+ generic_handle_irq_desc(entry->irq, vdesc);
+ }
}
chip->irq_unmask(data);
--
1.7.10.4
--
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