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ARM: SMP: pass an ipi number to smp_cross_call()

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This allows us to use smp_cross_call() to trigger a number of different
software generated interrupts, rather than combining them all on one
SGI.  Recover the SGI number via do_IPI.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2010-11-15 09:42:08 +00:00
parent d92e04713c
commit ad3b6993b9
15 changed files with 24 additions and 30 deletions
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10
arch/arm/kernel/smp.c
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@@ -404,7 +404,7 @@ static void send_ipi_message(const struct cpumask *mask, enum ipi_msg_type msg)
/*
* Call the platform specific cross-CPU call function.
*/
smp_cross_call(mask);
smp_cross_call(mask, 1);
local_irq_restore(flags);
}
@@ -537,14 +537,8 @@ static void ipi_cpu_stop(unsigned int cpu)
/*
* Main handler for inter-processor interrupts
*
* For ARM, the ipimask now only identifies a single
* category of IPI (Bit 1 IPIs have been replaced by a
* different mechanism):
*
* Bit 0 - Inter-processor function call
*/
asmlinkage void __exception do_IPI(struct pt_regs *regs)
asmlinkage void __exception do_IPI(int ipinr, struct pt_regs *regs)
{
unsigned int cpu = smp_processor_id();
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);