From: Milton Miller <miltonm@bga.com>
To: linuxppc-dev@ozlabs.org,
Ben Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH 15/16] powerpc cell: use smp_request_message_ipi
Date: Fri, 10 Oct 2008 06:56:50 -0500 (CDT) [thread overview]
Message-ID: <patch-ipi-4@bga.com> (raw)
In-Reply-To: <patch-ipi-2@bga.com>
cell native has 4 interrupts for ipis, so use the new smp_request_message_ipi
to save pathlength and the data-dependent branch.
This has the side effects of enabling the debugger ipi for kdump and
setting IRQF_PERCPU for the ipi interrupts. It doesn't undo the virq
mapping if it turns out the ipi is not used.
Signed-off-by: Milton Miller <miltonm@bga.com>
Index: next.git/arch/powerpc/platforms/cell/interrupt.c
===================================================================
--- next.git.orig/arch/powerpc/platforms/cell/interrupt.c 2008-10-04 23:40:24.000000000 -0500
+++ next.git/arch/powerpc/platforms/cell/interrupt.c 2008-10-04 23:44:49.000000000 -0500
@@ -190,38 +190,25 @@ struct irq_host *iic_get_irq_host(int no
}
EXPORT_SYMBOL_GPL(iic_get_irq_host);
-static irqreturn_t iic_ipi_action(int irq, void *dev_id)
-{
- int ipi = (int)(long)dev_id;
-
- smp_message_recv(ipi);
-
- return IRQ_HANDLED;
-}
-static void iic_request_ipi(int ipi, const char *name)
+static void iic_request_ipi(int ipi)
{
int virq;
virq = irq_create_mapping(iic_host, iic_ipi_to_irq(ipi));
if (virq == NO_IRQ) {
printk(KERN_ERR
- "iic: failed to map IPI %s\n", name);
+ "iic: failed to map IPI %s\n", smp_ipi_name[ipi]);
return;
}
- if (request_irq(virq, iic_ipi_action, IRQF_DISABLED, name,
- (void *)(long)ipi))
- printk(KERN_ERR
- "iic: failed to request IPI %s\n", name);
+ smp_request_message_ipi(virq, ipi);
}
void iic_request_IPIs(void)
{
- iic_request_ipi(PPC_MSG_CALL_FUNCTION, "IPI-call");
- iic_request_ipi(PPC_MSG_RESCHEDULE, "IPI-resched");
- iic_request_ipi(PPC_MSG_CALL_FUNC_SINGLE, "IPI-call-single");
-#ifdef CONFIG_DEBUGGER
- iic_request_ipi(PPC_MSG_DEBUGGER_BREAK, "IPI-debug");
-#endif /* CONFIG_DEBUGGER */
+ iic_request_ipi(PPC_MSG_CALL_FUNCTION);
+ iic_request_ipi(PPC_MSG_RESCHEDULE);
+ iic_request_ipi(PPC_MSG_CALL_FUNC_SINGLE);
+ iic_request_ipi(PPC_MSG_DEBUGGER_BREAK);
}
#endif /* CONFIG_SMP */
next prev parent reply other threads:[~2008-10-10 11:57 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 ` Milton Miller [this message]
2008-10-10 11:56 ` [PATCH 16/16] powerpc ps3: " Milton Miller
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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