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| author | Kefeng Wang <[email protected]> | 2020-06-09 13:52:00 +0000 |
|---|---|---|
| committer | Steven Rostedt (VMware) <[email protected]> | 2020-06-17 01:21:02 +0000 |
| commit | 9fbc01cdba66e988122ccdc6094cfd85d9587769 (patch) | |
| tree | 28d9512955eacc1e7ff4ffd892f4d08b34804a62 /samples/ftrace/sample-trace-array.c | |
| parent | sample-trace-array: Fix sleeping function called from invalid context (diff) | |
| download | kernel-9fbc01cdba66e988122ccdc6094cfd85d9587769.tar.gz kernel-9fbc01cdba66e988122ccdc6094cfd85d9587769.zip | |
sample-trace-array: Remove trace_array 'sample-instance'
Remove trace_array 'sample-instance' if kthread_run fails
in sample_trace_array_init().
Link: https://lkml.kernel.org/r/[email protected]
Cc: [email protected]
Fixes: 89ed42495ef4a ("tracing: Sample module to demonstrate kernel access to Ftrace instances.")
Reviewed-by: Divya Indi <[email protected]>
Signed-off-by: Kefeng Wang <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
Diffstat (limited to 'samples/ftrace/sample-trace-array.c')
| -rw-r--r-- | samples/ftrace/sample-trace-array.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/samples/ftrace/sample-trace-array.c b/samples/ftrace/sample-trace-array.c index 9e437f930280..6aba02a31c96 100644 --- a/samples/ftrace/sample-trace-array.c +++ b/samples/ftrace/sample-trace-array.c @@ -115,8 +115,12 @@ static int __init sample_trace_array_init(void) trace_printk_init_buffers(); simple_tsk = kthread_run(simple_thread, NULL, "sample-instance"); - if (IS_ERR(simple_tsk)) + if (IS_ERR(simple_tsk)) { + trace_array_put(tr); + trace_array_destroy(tr); return -1; + } + return 0; } |