diff options
Diffstat (limited to 'scripts/link-vmlinux.sh')
| -rwxr-xr-x | scripts/link-vmlinux.sh | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index f742c65108b9..6b94fe4e932d 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -246,10 +246,14 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then # the right size, but due to the added section, some # addresses have shifted. # From here, we generate a correct .tmp_kallsyms2.o - # 2a) We may use an extra pass as this has been necessary to - # woraround some alignment related bugs. - # KALLSYMS_EXTRA_PASS=1 is used to trigger this. - # 3) The correct ${kallsymso} is linked into the final vmlinux. + # 3) That link may have expanded the kernel image enough that + # more linker branch stubs / trampolines had to be added, which + # introduces new names, which further expands kallsyms. Do another + # pass if that is the case. In theory it's possible this results + # in even more stubs, but unlikely. + # KALLSYMS_EXTRA_PASS=1 may also used to debug or work around + # other bugs. + # 4) The correct ${kallsymso} is linked into the final vmlinux. # # a) Verify that the System.map from vmlinux matches the map from # ${kallsymso}. @@ -265,8 +269,11 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then vmlinux_link .tmp_kallsyms1.o .tmp_vmlinux2 kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o - # step 2a - if [ -n "${KALLSYMS_EXTRA_PASS}" ]; then + # step 3 + size1=$(stat -c "%s" .tmp_kallsyms1.o) + size2=$(stat -c "%s" .tmp_kallsyms2.o) + + if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then kallsymso=.tmp_kallsyms3.o kallsyms_vmlinux=.tmp_vmlinux3 |