When no parameters are passed, the usage instructions are presented only
when debuginfod-find is not found. This makes sense because with debuginfod
none of the positional parameters are needed. However it means that users
having debuginfod-find installed will have no chance of reading the usage
text without opening the file.
Many programs have a '-h' flag to get the usage, so add such a flag.
Invoking 'scripts/decode_stacktrace.sh -h' will now show the usage text and
exit.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
scripts/decode_stacktrace.sh | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index b56e79060e9f..e8c9976062d0 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -7,6 +7,7 @@ usage() {
echo "Usage:"
echo " $0 -r <release>"
echo " $0 [<vmlinux> [<base_path>|auto [<modules_path>]]]"
+ echo " $0 -h"
}
# Try to find a Rust demangler
@@ -32,7 +33,10 @@ fi
READELF=${UTIL_PREFIX}readelf${UTIL_SUFFIX}
ADDR2LINE=${UTIL_PREFIX}addr2line${UTIL_SUFFIX}
-if [[ $1 == "-r" ]] ; then
+if [[ $1 == "-h" ]] ; then
+ usage
+ exit 0
+elif [[ $1 == "-r" ]] ; then
vmlinux=""
basepath="auto"
modpath=""
--
2.34.1