From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> Subject: scripts/decode_stacktrace.sh: guess basepath if not specified Guess path to kernel sources using known location of symbol "kernel_init". Make basepath argument optional. Before: $ echo 'vfs_open+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux "" vfs_open (home/khlebnikov/src/linux/fs/open.c:912) After: $ echo 'vfs_open+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux vfs_open (fs/open.c:912) Link: http://lkml.kernel.org/r/159282922803.248444.2379229451667913634.stgit@buzz Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> Cc: Sasha Levin <sashal@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/decode_stacktrace.sh | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) --- a/scripts/decode_stacktrace.sh~scripts-decode_stacktrace-guess-basepath-if-not-specified +++ a/scripts/decode_stacktrace.sh @@ -3,14 +3,14 @@ # (c) 2014, Sasha Levin <sasha.levin@xxxxxxxxxx> #set -x -if [[ $# < 2 ]]; then +if [[ $# < 1 ]]; then echo "Usage:" - echo " $0 [vmlinux] [base path] [modules path]" + echo " $0 <vmlinux> [base path] [modules path]" exit 1 fi vmlinux=$1 -basepath=$2 +basepath=${2-auto} modpath=$3 declare -A cache declare -A modcache @@ -152,6 +152,14 @@ handle_line() { echo "${words[@]}" "$symbol $module" } +if [[ $basepath == "auto" ]] ; then + module="" + symbol="kernel_init+0x0/0x0" + parse_symbol + basepath=${symbol#kernel_init (} + basepath=${basepath%/init/main.c:*)} +fi + while read line; do # Let's see if we have an address in the line if [[ $line =~ \[\<([^]]+)\>\] ]] || _
