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authorArnd Bergmann <arnd@arndb.de>2017-10-13 16:22:20 +0200
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-10-13 11:08:01 -0400
commitc3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0 (patch)
tree943e5cd0c4811c80c421439e68f0a5b6fd33e248 /kernel
parentaf41acf8347dd6d11a2a29a11e2866ca4892d600 (diff)
downloadop-kernel-dev-c3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0.zip
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tracing: mark trace_test_buffer as __maybe_unused
After trace_selftest_startup_sched_switch is removed, trace_test_buffer() is only used sometimes, leading to this warning: kernel/trace/trace_selftest.c:62:12: error: 'trace_test_buffer' defined but not used [-Werror=unused-function] There is no simple #ifdef condition that captures well whether the function is in fact used or not, so marking it as __maybe_unused is probably the best way to shut up the warning. The function will then be silently dropped when there is no user. Link: http://lkml.kernel.org/r/20171013142227.1273469-1-arnd@arndb.de Fixes: d8c4deee6dc6 ("tracing: Remove obsolete sched_switch tracer selftest") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_selftest.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 364f78a..eb9ba5c 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -59,7 +59,7 @@ static int trace_test_buffer_cpu(struct trace_buffer *buf, int cpu)
* Test the trace buffer to see if all the elements
* are still sane.
*/
-static int trace_test_buffer(struct trace_buffer *buf, unsigned long *count)
+static int __maybe_unused trace_test_buffer(struct trace_buffer *buf, unsigned long *count)
{
unsigned long flags, cnt = 0;
int cpu, ret = 0;
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