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ARM: 5989/1: ARM: KGDB: add support for SMP platforms 

To support SMP platforms, KGDB requires the architecture backend to
implement the kgdb_roundup_cpus function.

This patch, taken against 2.6.33, implements the function for ARM based
on the MIPS port.

Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Jean-Michel Hautbois <jhautbois@gmail.com>
Cc: KGDB Mailing List <kgdb-bugreport@lists.sourceforge.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2010-03-12 11:03:58 +01:00 committed by Russell King
parent 75216859d9
commit 5d8614cc5d
1 changed files with 13 additions and 0 deletions
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13
arch/arm/kernel/kgdb.c
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@ -9,6 +9,7 @@
* Authors: George Davis <davis_g@mvista.com>
* Deepak Saxena <dsaxena@plexity.net>
*/
#include <linux/irq.h>
#include <linux/kgdb.h>
#include <asm/traps.h>
@ -158,6 +159,18 @@ static struct undef_hook kgdb_compiled_brkpt_hook = {
.fn = kgdb_compiled_brk_fn
};
static void kgdb_call_nmi_hook(void *ignored)
{
kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
}
void kgdb_roundup_cpus(unsigned long flags)
{
local_irq_enable();
smp_call_function(kgdb_call_nmi_hook, NULL, 0);
local_irq_disable();
}
/**
* kgdb_arch_init - Perform any architecture specific initalization.
*