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| author | Arnd Bergmann <arnd@arndb.de> | 2017-10-13 16:22:20 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-10-13 17:08:01 +0200 |
| commit | c3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0 (patch) | |
| tree | 943e5cd0c4811c80c421439e68f0a5b6fd33e248 /kernel/trace/trace_selftest.c | |
| parent | printk: Remove superfluous memory barriers from printk_safe (diff) | |
| download | linux-c3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0.tar.xz linux-c3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0.zip | |
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/trace/trace_selftest.c')
| -rw-r--r-- | kernel/trace/trace_selftest.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index 364f78abdf47..eb9ba5c1ba40 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; |