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authorKees Cook <keescook@chromium.org>2019-08-13 08:15:32 -0700
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-21 21:05:21 +0900
commit8959e39272d6e625da1cd62f2e7622d79e04447d (patch)
treedaf6ef58d72544f4692be205bbda6bcaa506b51f /scripts/link-vmlinux.sh
parentc7c0eecf894c3e353499fffd6f2ddaefc89bbd4a (diff)
kbuild: Parameterize kallsyms generation and correct reporting
When kallsyms generation happens, temporary vmlinux outputs are linked but the quiet make output didn't report it, giving the impression that the prior command is taking longer than expected. Instead, report the linking step explicitly. While at it, this consolidates the repeated "kallsyms generation step" into a single function and removes the existing copy/pasting. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rwxr-xr-xscripts/link-vmlinux.sh38
1 files changed, 19 insertions, 19 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 915775eb2921..2438a9faf3f1 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -60,6 +60,7 @@ modpost_link()
# ${2} - output file
vmlinux_link()
{
+ info LD ${2}
local lds="${objtree}/${KBUILD_LDS}"
local objects
@@ -138,6 +139,18 @@ kallsyms()
${CC} ${aflags} -c -o ${2} ${afile}
}
+# Perform one step in kallsyms generation, including temporary linking of
+# vmlinux.
+kallsyms_step()
+{
+ kallsymso_prev=${kallsymso}
+ kallsymso=.tmp_kallsyms${1}.o
+ kallsyms_vmlinux=.tmp_vmlinux${1}
+
+ vmlinux_link "${kallsymso_prev}" ${kallsyms_vmlinux}
+ kallsyms ${kallsyms_vmlinux} ${kallsymso}
+}
+
# Create map file with all symbols from ${1}
# See mksymap for additional details
mksysmap()
@@ -216,6 +229,7 @@ info MODINFO modules.builtin.modinfo
${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
kallsymso=""
+kallsymso_prev=""
kallsyms_vmlinux=""
if [ -n "${CONFIG_KALLSYMS}" ]; then
@@ -242,32 +256,18 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
# a) Verify that the System.map from vmlinux matches the map from
# ${kallsymso}.
- kallsymso=.tmp_kallsyms2.o
- kallsyms_vmlinux=.tmp_vmlinux2
-
- # step 1
- vmlinux_link "" .tmp_vmlinux1
- kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o
-
- # step 2
- vmlinux_link .tmp_kallsyms1.o .tmp_vmlinux2
- kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o
+ kallsyms_step 1
+ kallsyms_step 2
# step 3
- size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms1.o)
- size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms2.o)
+ size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso_prev})
+ size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso})
if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
- kallsymso=.tmp_kallsyms3.o
- kallsyms_vmlinux=.tmp_vmlinux3
-
- vmlinux_link .tmp_kallsyms2.o .tmp_vmlinux3
-
- kallsyms .tmp_vmlinux3 .tmp_kallsyms3.o
+ kallsyms_step 3
fi
fi
-info LD vmlinux
vmlinux_link "${kallsymso}" vmlinux
if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then