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authorLi Huafei <lihuafei1@huawei.com>2022-04-27 05:41:19 +0200
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-05-25 22:57:37 +0200
commite35c2d8e22745751cf304ec3fe39616643db2e0a (patch)
treefee5d294d853be84ff51749c4314589dbd848a3d
parenttracing: Have event format check not flag %p* on __get_dynamic_array() (diff)
downloadlinux-e35c2d8e22745751cf304ec3fe39616643db2e0a.tar.xz
linux-e35c2d8e22745751cf304ec3fe39616643db2e0a.zip
tracing: Reset the function filter after completing trampoline/graph selftest
The direct trampoline and graph coexistence test sets global_ops to trace only 'trace_selftest_dynamic_test_func', but does not reset it after the test is completed, resulting in the function filter being set already after the system starts. Although it can be reset through the tracefs interface, it is more or less confusing to the user, and we should reset it to trace all functions after the trampoline/graph test completes. Link: https://lkml.kernel.org/r/20220427034119.24668-1-lihuafei1@huawei.com Link: https://lore.kernel.org/all/20220418073958.104029-1-lihuafei1@huawei.com/ Fixes: 130c08065848 ("tracing: Add trampoline/graph selftest") Signed-off-by: Li Huafei <lihuafei1@huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
-rw-r--r--kernel/trace/trace_selftest.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index abcadbe933bb..a2d301f58ced 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -895,6 +895,9 @@ trace_selftest_startup_function_graph(struct tracer *trace,
ret = -1;
goto out;
}
+
+ /* Enable tracing on all functions again */
+ ftrace_set_global_filter(NULL, 0, 1);
#endif
/* Don't test dynamic tracing, the function tracer already did */