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From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 02/16] ARM: smp: Add an IPI handler callable from C code
Date: Mon, 26 Sep 2011 12:02:21 +0100	[thread overview]
Message-ID: <1317034955-1029-3-git-send-email-marc.zyngier@arm.com> (raw)
In-Reply-To: <1317034955-1029-1-git-send-email-marc.zyngier@arm.com>

In order to be able to handle IPI directly from C code instead of
assembly code, introduce handle_IPI(), which is modeled after handle_IRQ().

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 arch/arm/include/asm/smp.h |    5 +++++
 arch/arm/kernel/smp.c      |    5 +++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
index 7c2299f..1e5717a 100644
--- a/arch/arm/include/asm/smp.h
+++ b/arch/arm/include/asm/smp.h
@@ -33,6 +33,11 @@ extern void show_ipi_list(struct seq_file *, int);
 asmlinkage void do_IPI(int ipinr, struct pt_regs *regs);
 
 /*
+ * Called from C code, this handles an IPI.
+ */
+void handle_IPI(int ipinr, struct pt_regs *regs);
+
+/*
  * Setup the set of possible CPUs (via set_cpu_possible)
  */
 extern void smp_init_cpus(void);
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index fcca40b..5e060ea 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -603,6 +603,11 @@ static void ipi_cpu_stop(unsigned int cpu)
  */
 asmlinkage void __exception_irq_entry do_IPI(int ipinr, struct pt_regs *regs)
 {
+	handle_IPI(ipinr, regs);
+}
+
+void handle_IPI(int ipinr, struct pt_regs *regs)
+{
 	unsigned int cpu = smp_processor_id();
 	struct pt_regs *old_regs = set_irq_regs(regs);
 
-- 
1.7.0.4

  parent reply	other threads:[~2011-09-26 11:02 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-26 11:02 [PATCH v2 00/16] Switch GIC users (and omap2plus) to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 01/16] ARM: Make global handler and CONFIG_MULTI_IRQ_HANDLER mutually exclusive Marc Zyngier
2011-09-28  1:00   ` Tony Lindgren
2011-09-26 11:02 ` Marc Zyngier [this message]
2011-09-28  1:01   ` [PATCH v2 02/16] ARM: smp: Add an IPI handler callable from C code Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 03/16] ARM: GIC: Add global gic_handle_irq() function Marc Zyngier
2011-09-28  1:01   ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 04/16] ARM: RealView: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 05/16] ARM: VExpress: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 06/16] ARM: msm: convert SMP platforms " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 07/16] ARM: GIC: Add global gic_handle_irq_offset() function Marc Zyngier
2011-09-28 15:50   ` Rob Herring
2011-09-29  8:53     ` Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 08/16] ARM: exynos4: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 09/16] ARM: tegra2: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 10/16] ARM: ux500: " Marc Zyngier
2011-09-27 11:47   ` Linus Walleij
2011-09-27 12:33     ` Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 11/16] ARM: shmobile: convert smp platforms to gic_handle_irq() Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 12/16] ARM: cns3xxx: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 13/16] ARM: zynq: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 14/16] ARM: omap2/3: Add global omap2/3_intc_handle_irq() functions Marc Zyngier
2011-09-28  1:02   ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 15/16] ARM: omap2plus: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-28  1:04   ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 16/16] ARM: GIC: Make MULTI_IRQ_HANDLER mandatory Marc Zyngier
2011-09-27  3:43   ` Shawn Guo
2011-09-27  8:32     ` Marc Zyngier
2011-09-27 10:19       ` Shawn Guo
2011-09-28  1:04   ` Tony Lindgren
2011-09-26 20:20 ` [PATCH v2 00/16] Switch GIC users (and omap2plus) to CONFIG_MULTI_IRQ_HANDLER David Brown
2011-09-27  0:15   ` David Brown
2011-09-27  8:58     ` Marc Zyngier
2011-09-27 10:20 ` Shawn Guo
2011-09-27 10:22   ` Marc Zyngier
2011-09-27 23:53 ` Tony Lindgren
2011-09-28  0:53   ` Tony Lindgren

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