PWN-Hunter/android_kernel_xiaomi_sdm845
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/ps3: Use smp_request_message_ipi

Browse Source 
ps3 has 4 ipis per cpu and can use the new smp_request_message_ipi to
reduce path length when receiving an ipi.

This has the side effect of setting IRQF_PERCPU.

Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Geoff Levand 2009-04-16 09:05:39 +00:00 committed by Benjamin Herrenschmidt
parent 14f966e794
commit fb94fc2b89
1 changed files with 1 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/powerpc/platforms/ps3/smp.c
View File

@ -32,12 +32,6 @@
#define DBG pr_debug
#endif
static irqreturn_t ipi_function_handler(int irq, void *msg)
{
smp_message_recv((int)(long)msg);
return IRQ_HANDLED;
}
/**
* ps3_ipi_virqs - a per cpu array of virqs for ipi use
*/
@ -45,13 +39,6 @@ static irqreturn_t ipi_function_handler(int irq, void *msg)
#define MSG_COUNT 4
static DEFINE_PER_CPU(unsigned int, ps3_ipi_virqs[MSG_COUNT]);
static const char *names[MSG_COUNT] = {
"ipi call",
"ipi reschedule",
"ipi migrate",
"ipi debug brk"
};
static void do_message_pass(int target, int msg)
{
int result;
@ -119,8 +106,7 @@ static void __init ps3_smp_setup_cpu(int cpu)
DBG("%s:%d: (%d, %d) => virq %u\n",
__func__, __LINE__, cpu, i, virqs[i]);
result = request_irq(virqs[i], ipi_function_handler,
IRQF_DISABLED, names[i], (void*)(long)i);
result = smp_request_message_ipi(virqs[i], i);
if (result)
virqs[i] = NO_IRQ;