linux-kernel - Re: [PATCH 7/7] tracing: Un-export ftrace_set_clr

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Message-ID: <20190802172508.10e829d6@gandalf.local.home>
Date:   Fri, 2 Aug 2019 17:25:08 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Divya Indi <divya.indi@...cle.com>
Cc:     linux-kernel@...r.kernel.org, Joe Jin <joe.jin@...cle.com>,
        Aruna Ramakrishna <aruna.ramakrishna@...cle.com>,
        Srinivas Eeda <srinivas.eeda@...cle.com>
Subject: Re: [PATCH 7/7] tracing: Un-export ftrace_set_clr_event

On Fri, 2 Aug 2019 14:12:54 -0700
Divya Indi <divya.indi@...cle.com> wrote:

> Hi Steve,
> 
> The first patch would be like a temporary fix in case we need more 
> changes to the patches that add the new function - trace_array_set_clr() 
> and unexport ftrace_set_clr_event() and might take some time. In which 
> case I think it would be good to have this in place (But, not part of 
> this series).
> 
> If they all are to go in together as part of the same release ie if all 
> is good with the concerned patches (Patch 6 & Patch 7), then I think 
> having this patch would be meaningless.

Can you just do this part of patch 6 instead?

+/**
+ * trace_array_set_clr_event - enable or disable an event for a trace array
+ * @system: system name to match (NULL for any system)
+ * @event: event name to match (NULL for all events, within system)
+ * @set: 1 to enable, 0 to disable
+ *
+ * This is a way for other parts of the kernel to enable or disable
+ * event recording to instances.
+ *
+ * Returns 0 on success, -EINVAL if the parameters do not match any
+ * registered events.
+ */
+int trace_array_set_clr_event(struct trace_array *tr, const char *system,
+		const char *event, int set)
+{
+	if (!tr)
+		return -ENOENT;
+
+	return __ftrace_set_clr_event(tr, NULL, system, event, set);
+}
+EXPORT_SYMBOL_GPL(trace_array_set_clr_event);
+

-- Steve