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authorMing Lei <tom.leiming@gmail.com>2013-11-02 09:11:33 +1030
committerRusty Russell <rusty@rustcorp.com.au>2013-11-02 09:13:02 +1030
commitf6537f2f0eba4eba3354e48dbe3047db6d8b6254 (patch)
tree20541922629260f7e48eaacc9c5e590d33a461c4 /scripts/link-vmlinux.sh
parent12aee278b50c4a94a93fa0b4d201ae35d792c696 (diff)
downloadleg-kernel-f6537f2f0eba4eba3354e48dbe3047db6d8b6254.tar.gz
scripts/kallsyms: filter symbols not in kernel address space
This patch uses CONFIG_PAGE_OFFSET to filter symbols which are not in kernel address space because these symbols are generally for generating code purpose and can't be run at kernel mode, so we needn't keep them in /proc/kallsyms. For example, on ARM there are some symbols which may be linked in relocatable code section, then perf can't parse symbols any more from /proc/kallsyms, this patch fixes the problem (introduced b9b32bf70f2fb710b07c94e13afbc729afe221da) Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@vger.kernel.org
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rw-r--r--scripts/link-vmlinux.sh2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 014994936b1c..32b10f53d0b4 100644
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -82,6 +82,8 @@ kallsyms()
kallsymopt="${kallsymopt} --all-symbols"
fi
+ kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
+
local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"