From ebaeb5ae24379b5b635dc1d1fa6df904bc95b4d9 Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Thu, 16 Feb 2012 01:14:45 +0000 Subject: fadump: Convert firmware-assisted cpu state dump data into elf notes. When registered for firmware assisted dump on powerpc, firmware preserves the registers for the active CPUs during a system crash. This patch reads the cpu register data stored in Firmware-assisted dump format (except for crashing cpu) and converts it into elf notes and updates the PT_NOTE program header accordingly. The exact register state for crashing cpu is saved to fadump crash info structure in scratch area during crash_fadump() and read during second kernel boot. Signed-off-by: Mahesh Salgaonkar Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/setup-common.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 77bb77da05c1..4e62a56e1a95 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -61,6 +61,7 @@ #include #include #include +#include #include "setup.h" @@ -639,6 +640,11 @@ EXPORT_SYMBOL(check_legacy_ioport); static int ppc_panic_event(struct notifier_block *this, unsigned long event, void *ptr) { + /* + * If firmware-assisted dump has been registered then trigger + * firmware-assisted dump and let firmware handle everything else. + */ + crash_fadump(NULL, ptr); ppc_md.panic(ptr); /* May not return */ return NOTIFY_DONE; } -- cgit v1.2.3 From 67b43b9d7ced37a2e72e2c3e06464aa0a5be95f9 Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Thu, 16 Feb 2012 01:15:15 +0000 Subject: fadump: Invalidate the fadump registration during machine shutdown. If dump is active during system reboot, shutdown or halt then invalidate the fadump registration as it does not get invalidated automatically. Signed-off-by: Mahesh Salgaonkar Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/setup-common.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 4e62a56e1a95..b0ebdeab9494 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -110,6 +110,14 @@ EXPORT_SYMBOL(ppc_do_canonicalize_irqs); /* also used by kexec */ void machine_shutdown(void) { +#ifdef CONFIG_FA_DUMP + /* + * if fadump is active, cleanup the fadump registration before we + * shutdown. + */ + fadump_cleanup(); +#endif + if (ppc_md.machine_shutdown) ppc_md.machine_shutdown(); } -- cgit v1.2.3 From ae3a197e3d0bfe3f4bf1693723e82dc018c096f3 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 28 Mar 2012 18:30:02 +0100 Subject: Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PowerPC. Signed-off-by: David Howells Acked-by: Benjamin Herrenschmidt cc: linuxppc-dev@lists.ozlabs.org --- arch/powerpc/kernel/setup-common.c | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/powerpc/kernel/setup-common.c') diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index b0ebdeab9494..afd4f051f3f2 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -51,7 +51,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3