linux-kernel - Re: [PATCH v2 1/5] ftrace: Fix accounting of adding subops to a manager ops

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Message-Id: <20250220155858.8a99ab5dae52b875fdbab1d6@kernel.org>
Date: Thu, 20 Feb 2025 15:58:58 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, Masami
 Hiramatsu <mhiramat@...nel.org>, Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Andrew Morton
 <akpm@...ux-foundation.org>, Heiko Carstens <hca@...ux.ibm.com>, Sven
 Schnelle <svens@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
 Alexander Gordeev <agordeev@...ux.ibm.com>, stable@...r.kernel.org
Subject: Re: [PATCH v2 1/5] ftrace: Fix accounting of adding subops to a
 manager ops

On Wed, 19 Feb 2025 17:04:37 -0500
Steven Rostedt <rostedt@...dmis.org> wrote:

> @@ -3292,16 +3299,18 @@ static int intersect_hash(struct ftrace_hash **hash, struct ftrace_hash *new_has
>  /* Return a new hash that has a union of all @ops->filter_hash entries */
>  static struct ftrace_hash *append_hashes(struct ftrace_ops *ops)
>  {
> -	struct ftrace_hash *new_hash;
> +	struct ftrace_hash *new_hash = NULL;

Isn't this "= EMPTY_HASH"?

Thank you,


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>