From: Milton Miller <miltonm@bga.com>
To: linuxppc-dev@ozlabs.org,
Ben Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Subject: [PATCH 16/16] powerpc ps3: use smp_request_message_ipi
Date: Fri, 10 Oct 2008 06:56:51 -0500 (CDT) [thread overview]
Message-ID: <patch-ipi-5@bga.com> (raw)
In-Reply-To: <patch-ipi-2@bga.com>
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>
Index: next.git/arch/powerpc/platforms/ps3/smp.c
===================================================================
--- next.git.orig/arch/powerpc/platforms/ps3/smp.c 2008-10-05 00:20:41.000000000 -0500
+++ next.git/arch/powerpc/platforms/ps3/smp.c 2008-10-05 00:22:50.000000000 -0500
@@ -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(
#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
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;
next prev parent reply other threads:[~2008-10-10 11:56 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-10 11:56 [PATCH 00/16] xics and ipi cleanups for 2.6.28 Milton Miller
2008-10-10 11:56 ` [PATCH 1/16] powerpc pseries: eoi unmapped xics irqs after disable Milton Miller
2008-10-10 11:56 ` [PATCH 2/16] xics: update default_server during migrate_irqs_away Milton Miller
2008-10-13 20:04 ` Nathan Fontenot
2008-10-10 11:56 ` [PATCH 3/16] xics: consolidate ipi message encode and decode Milton Miller
2008-10-10 11:56 ` [PATCH 4/16] xics: rearrange file to group code by function Milton Miller
2008-10-10 11:56 ` [PATCH 5/16] xics: change arg type to remove casts Milton Miller
2008-10-10 11:56 ` [PATCH 6/16] xics: trim includes Milton Miller
2008-10-10 11:56 ` [PATCH 7/16] xics: initialization cleanups Milton Miller
2008-10-13 0:55 ` Benjamin Herrenschmidt
2008-10-10 11:56 ` [PATCH 8/16] xics: factor out giq set and unset Milton Miller
2008-10-10 11:56 ` [PATCH 9/16] powerpc: eoi xics ipi by hand in kexec Milton Miller
2008-10-10 11:56 ` [PATCH 11/16] powerpc: mark xics ipi percpu Milton Miller
2008-10-10 11:56 ` [PATCH 10/16] xics: make printk formats fit on one line Milton Miller
2008-10-10 11:56 ` [PATCH 12/16] powerpc: reduce and comment xics ipi memory barrier Milton Miller
2008-10-10 11:56 ` [PATCH 13/16] powerpc smp: no need to set_need_resched in resched ipi Milton Miller
2008-10-10 11:56 ` [PATCH 14/16] powerpc: expand vs demux ipi actions per message Milton Miller
2008-10-10 11:56 ` [PATCH 14/16] powerpc mpic: use smp_request_message_ipi Milton Miller
2008-10-10 11:56 ` [PATCH 15/16] powerpc cell: " Milton Miller
2008-10-10 11:56 ` Milton Miller [this message]
2008-10-10 12:55 ` [PATCH 14/16] powerpc: expand vs demux ipi actions per message Geert Uytterhoeven
2008-10-21 1:37 ` [PATCH 14/16 v2] " Milton Miller
2008-11-06 4:42 ` Paul Mackerras
2008-11-11 16:12 ` Milton Miller
2008-10-13 5:28 ` [PATCH 00/16] xics and ipi cleanups for 2.6.28 Benjamin Herrenschmidt
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