Add a helper for detecting watchdog drivers

Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Lianbo Jiang <lijiang@redhat.com>
This commit is contained in:
Kairui Song 2020-11-19 17:06:58 +08:00
parent 276de0f810
commit 320bd209fe

View File

@ -744,6 +744,25 @@ prepare_kdump_bootinfo()
fi
}
get_watchdog_drvs()
{
local _wdtdrvs _drv _dir
for _dir in /sys/class/watchdog/*; do
# device/modalias will return driver of this device
[[ -f "$_dir/device/modalias" ]] || continue
_drv=$(< "$_dir/device/modalias")
_drv=$(modprobe --set-version "$KDUMP_KERNELVER" -R $_drv 2>/dev/null)
for i in $_drv; do
if ! [[ " $_wdtdrvs " == *" $i "* ]]; then
_wdtdrvs="$_wdtdrvs $i"
fi
done
done
echo $_wdtdrvs
}
#
# prepare_cmdline <commandline> <commandline remove> <commandline append>
# This function performs a series of edits on the command line.