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tracing: Simplify conditional compilation code in tracing_set_tracer()

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[ Upstream commit f4b0d318097e45cbac5e14976f8bb56aa2cef504 ]

Two conditional compilation directives "#ifdef CONFIG_TRACER_MAX_TRACE"
are used consecutively, and no other code in between. Simplify conditional
the compilation code and only use one "#ifdef CONFIG_TRACER_MAX_TRACE".

Link: https://lkml.kernel.org/r/20220602140613.545069-1-sunliming@kylinos.cn

Signed-off-by: sunliming <sunliming@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Stable-dep-of: a541a9559bb0 ("tracing: Do not free snapshot if tracer is on cmdline")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
sunliming 2022-06-02 22:06:13 +08:00 committed by Greg Kroah-Hartman
parent 20bc6d23f7
commit 57252e7bd4
1 changed files with 0 additions and 2 deletions
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2
kernel/trace/trace.c
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@ -6416,9 +6416,7 @@ int tracing_set_tracer(struct trace_array *tr, const char *buf)
synchronize_rcu();
free_snapshot(tr);
}
#endif
#ifdef CONFIG_TRACER_MAX_TRACE
if (t->use_max_tr && !had_max_tr) {
ret = tracing_alloc_snapshot_instance(tr);
if (ret < 0)