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Groups > linux.kernel > #1423540

[PATCH tip/core/rcu 05/14] torture: Add starvation events to error summary

From "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Newsgroups linux.kernel
Subject [PATCH tip/core/rcu 05/14] torture: Add starvation events to error summary
Date 2016-06-16 00:20 +0200
Message-ID <rKrke-8p8-47@gated-at.bofh.it> (permalink)
References <rKray-8lC-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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This commit adds a string of the form "Starves: 10" to the summary
line for error conditions found in the console output.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 tools/testing/selftests/rcutorture/bin/parse-console.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh
index 5eb49b7f864c..08aa7d50ae0e 100755
--- a/tools/testing/selftests/rcutorture/bin/parse-console.sh
+++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh
@@ -33,7 +33,7 @@ if grep -Pq '\x00' < $file
 then
 	print_warning Console output contains nul bytes, old qemu still running?
 fi
-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' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $1.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 'Warning: unable to open an initial console' > $1.diags
 if test -s $1.diags
 then
 	print_warning Assertion failure in $file $title
@@ -69,6 +69,11 @@ then
 	then
 		summary="$summary  Stalls: $n_stalls"
 	fi
+	n_starves=`grep -c 'rcu_.*kthread starved for' $1`
+	if test "$n_starves" -ne 0
+	then
+		summary="$summary  Starves: $n_starves"
+	fi
 	print_warning Summary: $summary
 else
 	rm $1.diags
-- 
2.5.2

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[PATCH tip/core/rcu 0/14] Torture-test changes for 4.8 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:10 +0200
  [PATCH tip/core/rcu 13/14] torture: Inflict default jitter "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 06/14] torture: Stop onoff task if there is only one cpu "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 04/14] torture:  Break online and offline functions out of torture_onoff() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 12/14] rcuperf: Don't treat gp_exp mis-setting as a WARN "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 07/14] rcutorture/doc: Create initrd using dracut "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 09/14] rcutorture: Make -soundhw a x86 specific option "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 14/14] rcutorture: Fix error return code in rcu_perf_init() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 08/14] rcutorture: Use vmlinux as the fallback kernel image "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 01/14] torture: Simplify code, eliminate RCU_PERF_TEST_RUNNABLE "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 10/14] rcutorture: Don't specify the cpu type of QEMU on PPC "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 11/14] rcutorture: Drop "-soundhw pcspkr" from x86 boot arguments "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 05/14] torture: Add starvation events to error summary "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200
  [PATCH tip/core/rcu 02/14] torture: Remove CONFIG_RCU_TORTURE_TEST_RUNNABLE, simplify code "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:20 +0200

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