[PATCH tip/core/rcu 13/23] torture: Abstract out console-log error detection

[paulmck]

From: "Paul E. McKenney" <paulmck@xxxxxxxxxx>

This commit pulls the simple pattern-based error detection from the
console log into a new console-badness.sh file.  This will enable future
commits to end a run on the first error.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 .../testing/selftests/rcutorture/bin/console-badness.sh  | 16 ++++++++++++++++
 tools/testing/selftests/rcutorture/bin/parse-console.sh  |  5 +----
 2 files changed, 17 insertions(+), 4 deletions(-)
 create mode 100755 tools/testing/selftests/rcutorture/bin/console-badness.sh

diff --git a/tools/testing/selftests/rcutorture/bin/console-badness.sh b/tools/testing/selftests/rcutorture/bin/console-badness.sh
new file mode 100755
index 0000000..0e4c0b2
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/console-badness.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Scan standard input for error messages, dumping any found to standard
+# output.
+#
+# Usage: console-badness.sh
+#
+# Copyright (C) 2020 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@xxxxxxxxxx>
+
+egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for|!!!' |
+grep -v 'ODEBUG: ' |
+grep -v 'This means that this is a DEBUG kernel and it is' |
+grep -v 'Warning: unable to open an initial console'
diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh
index 1c64ca8..98478e1 100755
--- a/tools/testing/selftests/rcutorture/bin/parse-console.sh
+++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh
@@ -116,10 +116,7 @@ then
 	fi
 fi | tee -a $file.diags
 
-egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for' < $file |
-grep -v 'ODEBUG: ' |
-grep -v 'This means that this is a DEBUG kernel and it is' |
-grep -v 'Warning: unable to open an initial console' > $T.diags
+console-badness.sh < $file > $T.diags
 if test -s $T.diags
 then
 	print_warning "Assertion failure in $file $title"
-- 
2.9.5