tracing: Fix tracing_stat return values in error handling paths
tracing_stat_init() was always returning '0', even on the error paths. It
now returns -ENODEV if tracing_init_dentry() fails or -ENOMEM if it fails
to created the 'trace_stat' debugfs directory.
Link: http://lkml.kernel.org/r/1410299381-20108-1-git-send-email-luis.henriques@canonical.com
Fixes: ed6f1c996b
("tracing: Check return value of tracing_init_dentry()")
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
[ Pulled from the archeological digging of my INBOX ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
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dfb6cd1e65
Коммит
afccc00f75
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@ -280,18 +280,22 @@ static int tracing_stat_init(void)
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d_tracing = tracing_init_dentry();
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if (IS_ERR(d_tracing))
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return 0;
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return -ENODEV;
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stat_dir = tracefs_create_dir("trace_stat", d_tracing);
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if (!stat_dir)
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if (!stat_dir) {
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pr_warn("Could not create tracefs 'trace_stat' entry\n");
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return -ENOMEM;
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}
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return 0;
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}
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static int init_stat_file(struct stat_session *session)
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{
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if (!stat_dir && tracing_stat_init())
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return -ENODEV;
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int ret;
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if (!stat_dir && (ret = tracing_stat_init()))
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return ret;
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session->file = tracefs_create_file(session->ts->name, 0644,
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stat_dir,
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