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authorGeoff Levand <geoff@infradead.org>2011-11-08 12:37:26 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-11-16 14:47:54 +1100
commit72f3bea075287785ed32b777b6dd2636aa7002e8 (patch)
tree44ed5dfbfe046d76add301dc8c4555a125a70b3d /arch/powerpc/platforms/ps3/platform.h
parentde1d9248eadd27539eba449b4d09428252e80c04 (diff)
downloadlinux-linaro-stable-72f3bea075287785ed32b777b6dd2636aa7002e8.tar.gz
powerpc/ps3: Fix lost SMP IPIs
Fixes the PS3 bootup hang introduced in 3.0-rc1 by: commit 317f394160e9beb97d19a84c39b7e5eb3d7815a sched: Move the second half of ttwu() to the remote cpu Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi() to ps3_get_irq() for IPI messages. If lv1_send_event_locally() is called between a previous call to lv1_send_event_locally() and the coresponding call to lv1_end_of_interrupt_ext() the second event will not be delivered to the target cpu. The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two IPI messages of the same type are sent to the same target in a relatively short period of time the second IPI event can become lost when lv1_end_of_interrupt_ext() is called from ps3_chip_eoi(). CC: stable@kernel.org Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/ps3/platform.h')
-rw-r--r--arch/powerpc/platforms/ps3/platform.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 9a196a88eda7..1a633ed0fe98 100644
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -43,6 +43,7 @@ void ps3_mm_shutdown(void);
void ps3_init_IRQ(void);
void ps3_shutdown_IRQ(int cpu);
void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq);
+void __init ps3_register_ipi_irq(unsigned int cpu, unsigned int virq);
/* smp */