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authorDavid Rientjes <rientjes@google.com>2014-07-30 19:05:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-07-30 20:09:37 -0700
commit3a1122d26c62d4e8c61ef9a0eaba6e21c0862c77 (patch)
treefb65b3066fc2adb41e009ddd6a16eede82b485ef
parent4d0bd657d77d599307649aa03991b05e3ddef059 (diff)
downloadlinux-3a1122d26c62d4e8c61ef9a0eaba6e21c0862c77.tar.gz
kexec: fix build error when hugetlbfs is disabled
free_huge_page() is undefined without CONFIG_HUGETLBFS and there's no need to filter PageHuge() page is such a configuration either, so avoid exporting the symbol to fix a build error: In file included from kernel/kexec.c:14:0: kernel/kexec.c: In function 'crash_save_vmcoreinfo_init': kernel/kexec.c:1623:20: error: 'free_huge_page' undeclared (first use in this function) VMCOREINFO_SYMBOL(free_huge_page); ^ Introduced by commit 8f1d26d0e59b ("kexec: export free_huge_page to VMCOREINFO") Reported-by: kbuild test robot <fengguang.wu@intel.com> Acked-by: Olof Johansson <olof@lixom.net> Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/kexec.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 23a088fec3c..4b8f0c92588 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1620,7 +1620,9 @@ static int __init crash_save_vmcoreinfo_init(void)
#endif
VMCOREINFO_NUMBER(PG_head_mask);
VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE);
+#ifdef CONFIG_HUGETLBFS
VMCOREINFO_SYMBOL(free_huge_page);
+#endif
arch_crash_save_vmcoreinfo();
update_vmcoreinfo_note();