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authorMichael Ellerman <michael@ellerman.id.au>2005-12-04 18:39:43 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:52:28 +1100
commitcc53291521701f9c7c7265bbb3c140563174d8b2 (patch)
tree9fa71dbb7d853f983c9033fc629edcd118c67858 /include/asm-powerpc
parent758438a7b8da593c9116e95cc7fdff6e9e0b0c40 (diff)
downloadop-kernel-dev-cc53291521701f9c7c7265bbb3c140563174d8b2.zip
op-kernel-dev-cc53291521701f9c7c7265bbb3c140563174d8b2.tar.gz
[PATCH] powerpc: Add arch dependent basic infrastructure for Kdump.
Implementing the machine_crash_shutdown which will be called by crash_kexec (called in case of a panic, sysrq etc.). Disable the interrupts, shootdown cpus using debugger IPI and collect regs for all CPUs. elfcorehdr= specifies the location of elf core header stored by the crashed kernel. This command line option will be passed by the kexec-tools to capture kernel. savemaxmem= specifies the actual memory size that the first kernel has and this value will be used for dumping in the capture kernel. This command line option will be passed by the kexec-tools to capture kernel. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/kexec.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/asm-powerpc/kexec.h b/include/asm-powerpc/kexec.h
index 934b498..ae76ed5 100644
--- a/include/asm-powerpc/kexec.h
+++ b/include/asm-powerpc/kexec.h
@@ -32,6 +32,8 @@
#ifndef __ASSEMBLY__
+#ifdef CONFIG_KEXEC
+
#define MAX_NOTE_BYTES 1024
typedef u32 note_buf_t[MAX_NOTE_BYTES / sizeof(u32)];
@@ -41,11 +43,17 @@ extern note_buf_t crash_notes[];
extern void kexec_smp_wait(void); /* get and clear naca physid, wait for
master to copy new code to 0 */
extern void __init kexec_setup(void);
-#endif
+extern int crashing_cpu;
+extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
+#endif /* __powerpc64 __ */
struct kimage;
+struct pt_regs;
extern void default_machine_kexec(struct kimage *image);
extern int default_machine_kexec_prepare(struct kimage *image);
+extern void default_machine_crash_shutdown(struct pt_regs *regs);
+
+#endif /* !CONFIG_KEXEC */
#endif /* ! __ASSEMBLY__ */
#endif /* _ASM_POWERPC_KEXEC_H */
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