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authorMika Westerberg <mika.westerberg@iki.fi>2010-11-19 11:29:24 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-11-30 16:39:55 +0300
commit9833c39400c3e6ee19daeded6910df648741611e (patch)
tree49fde990e2f08c5751f9f6923d32812580f87ff2 /include/linux/crash_dump.h
parente8a7e48bb248a1196484d3f8afa53bded2b24e71 (diff)
downloadlinux-9833c39400c3e6ee19daeded6910df648741611e.tar.xz
ARM: 6485/5: proc/vmcore - allow archs to override vmcore_elf_check_arch()
Allow architectures to redefine this macro if needed. This is useful for example in architectures where 64-bit ELF vmcores are not supported. Specifying zero vmcore_elf64_check_arch() allows compiler to optimize away unnecessary parts of parse_crash_elf64_headers(). We also rename the macro to vmcore_elf64_check_arch() to reflect that it is used for 64-bit vmcores only. Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/linux/crash_dump.h')
-rw-r--r--include/linux/crash_dump.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
index 0026f267da20..088cd4ace4ef 100644
--- a/include/linux/crash_dump.h
+++ b/include/linux/crash_dump.h
@@ -20,7 +20,14 @@ extern ssize_t copy_oldmem_page(unsigned long, char *, size_t,
#define vmcore_elf_check_arch_cross(x) 0
#endif
-#define vmcore_elf_check_arch(x) (elf_check_arch(x) || vmcore_elf_check_arch_cross(x))
+/*
+ * Architecture code can redefine this if there are any special checks
+ * needed for 64-bit ELF vmcores. In case of 32-bit only architecture,
+ * this can be set to zero.
+ */
+#ifndef vmcore_elf64_check_arch
+#define vmcore_elf64_check_arch(x) (elf_check_arch(x) || vmcore_elf_check_arch_cross(x))
+#endif
/*
* is_kdump_kernel() checks whether this kernel is booting after a panic of