From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEF42391E5B; Wed, 3 Jun 2026 01:58:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780451935; cv=none; b=eXTY1y/kVurb77qaCVrztjZtdVsz1BHsZ6qJ+78lO71I3nwENNt3Y0u8OuZV5wQu5TIgrXLk3bjJPnlDVcrhYOcyykygVstKYlvD0meHxG+4VozrHB6vxkXgozaqo3s4U1lN0hLgGUQNvI50tSVrb3zoXUb8xYyxBzgswQdAAtc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780451935; c=relaxed/simple; bh=4UAkSHyts2wKV6GLVSbcpPizHATKVgcPbqwRbKwlcws=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=Rs+La6GiZX1/XTkesT57wQ/lu1AxmnruV/Z0EYCji9efvyyOv6+BXjUdNWW+KCbqvFtST9t4TRdRhijABI1yPi9pablvW/R9IruQF7i95VM9nywL6AvUH4NlLbWQPpXnLaK8zNPRpdHmw50suD5jd9elgvy9xblKS2EfilRy1PU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=l+5sfnW9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="l+5sfnW9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B351D1F00893; Wed, 3 Jun 2026 01:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780451930; bh=4B3KvEc1dwO0ujpKZjsPorwmzZfs0UtyayL3dg0Jit0=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=l+5sfnW9I+psIYVAHnfBUxg6AzMOz+5FBRafH/qS+Lm0TfTM3dsjbmAo3imnzJlYQ nGvZz5lzqIWg41OHihB6R8SxevOXlYuoiwHavowZ+huQQaYQLBZ7cDNIINsTHiCTgt kKafzuz5rY/triV+BUJBm1RwmA1zctPsIuhKn0M1NE/FDtl8GiSvGiFfAnEBvNRjEO XKJ+iXSnfqnd/VCD4aUa3rTxarj8t65Bh3ZuWqn0hYJ5vcUk10HCSUqDZ8PcIO0pN0 NALjlnTyDZGdcvFcqg0Ptj4vlIBCPfhb7jkdVb5KK42fbd6r+LKn7qlGeHhCgaISbg YvekgMjDUq2sA== Date: Wed, 3 Jun 2026 10:58:42 +0900 From: Masami Hiramatsu (Google) To: Arnd Bergmann Cc: Steven Rostedt , Andrew Morton , Petr Mladek , Nathan Chancellor , Arnd Bergmann , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Arend van Spriel , Miri Korenblit , Mathieu Desnoyers , Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , Nick Desaulniers , Bill Wendling , Justin Stitt , Vlastimil Babka , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, linux-trace-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH 1/2] tracing: work around -Wmissing-format-attribute warning Message-Id: <20260603105842.1e0ef8cb4a55cb776d6a4971@kernel.org> In-Reply-To: <20260602150904.2258624-1-arnd@kernel.org> References: <20260602150904.2258624-1-arnd@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 2 Jun 2026 17:07:05 +0200 Arnd Bergmann wrote: > diff --git a/include/linux/sprintf.h b/include/linux/sprintf.h > index f06f7b785091..036a247b7c1e 100644 > --- a/include/linux/sprintf.h > +++ b/include/linux/sprintf.h > @@ -12,6 +12,7 @@ __printf(2, 3) int sprintf(char *buf, const char * fmt, ...); > __printf(2, 0) int vsprintf(char *buf, const char *, va_list); > __printf(3, 4) int snprintf(char *buf, size_t size, const char *fmt, ...); > __printf(3, 0) int vsnprintf(char *buf, size_t size, const char *fmt, va_list args); > +int __vsnprintf(char *buf, size_t size, const char *fmt, va_list args); > __printf(3, 4) int scnprintf(char *buf, size_t size, const char *fmt, ...); > __printf(3, 0) int vscnprintf(char *buf, size_t size, const char *fmt, va_list args); > __printf(2, 3) __malloc char *kasprintf(gfp_t gfp, const char *fmt, ...); > diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h > index d49338c44014..4715330c7b6b 100644 > --- a/include/linux/trace_events.h > +++ b/include/linux/trace_events.h > @@ -962,7 +962,7 @@ perf_trace_buf_submit(void *raw_data, int size, int rctx, u16 type, > int __ret; \ > \ > va_copy(__ap, *(va)); \ > - __ret = vsnprintf(NULL, 0, fmt, __ap) + 1; \ > + __ret = __vsnprintf(NULL, 0, fmt, __ap) + 1; \ > va_end(__ap); \ > \ > min(__ret, TRACE_EVENT_STR_MAX); \ I think this is a slightly confusing name. What about vsnprintf_nocheck()? Thanks, -- Masami Hiramatsu (Google)