It seems we need echo -1 to set_ftrace_pid to disable in. Or we'll get
these error message when running ftrace_stress:
...
ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh: line 39: echo: write
error: Invalid argument
...
---
.../ftrace_stress/ftrace_set_ftrace_pid.sh | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git
a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
index 541215c..bd08f04 100755
---
a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
+++
b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
@@ -36,7 +36,7 @@ for ((; ; ))
eval echo $str >> "$TRACING_PATH"/set_ftrace_pid
}
- echo > "$TRACING_PATH"/set_ftrace_pid
+ echo -1 > "$TRACING_PATH"/set_ftrace_pid
}
sleep 1
--
1.7.1
------------------------------------------------------------------------------
The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE:
Pinpoint memory and threading errors before they happen.
Find and fix more than 250 security defects in the development cycle.
Locate bottlenecks in serial and parallel code that limit performance.
http://p.sf.net/sfu/intel-dev2devfeb
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