projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2010776f PM |
1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0+ | |
| 236bdb88 BC |
3 | |
| 4 | usage() { | |
| 5 | echo Extract any RCU CPU stall warnings present in specified file. | |
| 6 | echo Filter out clocksource lines. Note that preceding-lines excludes the | |
| 7 | echo initial line of the stall warning but trailing-lines includes it. | |
| 8 | echo | |
| 9 | echo Usage: $(basename $0) dmesg-file [ preceding-lines [ trailing-lines ] ] | |
| 10 | echo | |
| 11 | echo Error: $1 | |
| 12 | } | |
| 13 | ||
| 14 | # Terminate the script, if the argument is missing | |
| 15 | ||
| 16 | if test -f "$1" && test -r "$1" | |
| 17 | then | |
| 18 | : | |
| 19 | else | |
| 20 | usage "Console log file \"$1\" missing or unreadable." | |
| 21 | exit 1 | |
| 22 | fi | |
| 2010776f PM |
23 | |
| 24 | echo $1 | |
| 25 | preceding_lines="${2-3}" | |
| 26 | trailing_lines="${3-10}" | |
| 27 | ||
| 28 | awk -v preceding_lines="$preceding_lines" -v trailing_lines="$trailing_lines" ' | |
| 29 | suffix <= 0 { | |
| 30 | for (i = preceding_lines; i > 0; i--) | |
| 31 | last[i] = last[i - 1]; | |
| 32 | last[0] = $0; | |
| 33 | } | |
| 34 | ||
| 35 | suffix > 0 { | |
| 36 | print $0; | |
| 37 | suffix--; | |
| 38 | if (suffix <= 0) | |
| 39 | print ""; | |
| 40 | } | |
| 41 | ||
| 42 | suffix <= 0 && /detected stall/ { | |
| 43 | for (i = preceding_lines; i >= 0; i--) | |
| 44 | if (last[i] != "") | |
| 45 | print last[i]; | |
| 46 | suffix = trailing_lines; | |
| 47 | }' < "$1" | tr -d '\015' | grep -v clocksource | |
| 48 |