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| author | Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | 2012-02-16 01:14:45 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-02-23 10:50:01 +1100 |
| commit | ebaeb5ae24379b5b635dc1d1fa6df904bc95b4d9 (patch) | |
| tree | 4c1d54e9ec25f48dd05708ed62d5eb6db9d0ba9d /arch/powerpc/kernel/traps.c | |
| parent | 2df173d9e85d9e2c6a8933c63f0c034accff7e0f (diff) | |
| download | op-kernel-dev-ebaeb5ae24379b5b635dc1d1fa6df904bc95b4d9.zip op-kernel-dev-ebaeb5ae24379b5b635dc1d1fa6df904bc95b4d9.tar.gz | |
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 <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index c091527..5d40e59 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -57,6 +57,7 @@ #include <asm/kexec.h> #include <asm/ppc-opcode.h> #include <asm/rio.h> +#include <asm/fadump.h> #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC) int (*__debugger)(struct pt_regs *regs) __read_mostly; @@ -145,6 +146,8 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, arch_spin_unlock(&die_lock); raw_local_irq_restore(flags); + crash_fadump(regs, "die oops"); + /* * A system reset (0x100) is a request to dump, so we always send * it through the crashdump code. |
