netdev - Re: [PATCH] tracing/treewide: Remove second parameter of __assign

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87r0e0zs0h.wl-tiwai@suse.de>
Date: Fri, 17 May 2024 11:50:38 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers 
 <mathieu.desnoyers@...icios.com>,
	Linus Torvalds 
 <torvalds@...ux-foundation.org>,
	linuxppc-dev@...ts.ozlabs.org,
	kvm@...r.kernel.org,
	linux-block@...r.kernel.org,
	linux-cxl@...r.kernel.org,
	linux-media@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	amd-gfx@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org,
	intel-xe@...ts.freedesktop.org,
	linux-arm-msm@...r.kernel.org,
	freedreno@...ts.freedesktop.org,
	virtualization@...ts.linux.dev,
	linux-rdma@...r.kernel.org,
	linux-pm@...r.kernel.org,
	iommu@...ts.linux.dev,
	linux-tegra@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-hyperv@...r.kernel.org,
	ath10k@...ts.infradead.org,
	linux-wireless@...r.kernel.org,
	ath11k@...ts.infradead.org,
	ath12k@...ts.infradead.org,
	brcm80211@...ts.linux.dev,
	brcm80211-dev-list.pdl@...adcom.com,
	linux-usb@...r.kernel.org,
	linux-bcachefs@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	ocfs2-devel@...ts.linux.dev,
	linux-cifs@...r.kernel.org,
	linux-xfs@...r.kernel.org,
	linux-edac@...r.kernel.org,
	selinux@...r.kernel.org,
	linux-btrfs@...r.kernel.org,
	linux-erofs@...ts.ozlabs.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-hwmon@...r.kernel.org,
	io-uring@...r.kernel.org,
	linux-sound@...r.kernel.org,
	bpf@...r.kernel.org,
	linux-wpan@...r.kernel.org,
	dev@...nvswitch.org,
	linux-s390@...r.kernel.org,
	tipc-discussion@...ts.sourceforge.net,
	Julia 
 Lawall <Julia.Lawall@...ia.fr>
Subject: Re: [PATCH] tracing/treewide: Remove second parameter of __assign_str()

On Thu, 16 May 2024 19:34:54 +0200,
Steven Rostedt wrote:
> 
> From: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> 
> [
>    This is a treewide change. I will likely re-create this patch again in
>    the second week of the merge window of v6.10 and submit it then. Hoping
>    to keep the conflicts that it will cause to a minimum.
> ]
> 
> With the rework of how the __string() handles dynamic strings where it
> saves off the source string in field in the helper structure[1], the
> assignment of that value to the trace event field is stored in the helper
> value and does not need to be passed in again.
> 
> This means that with:
> 
>   __string(field, mystring)
> 
> Which use to be assigned with __assign_str(field, mystring), no longer
> needs the second parameter and it is unused. With this, __assign_str()
> will now only get a single parameter.
> 
> There's over 700 users of __assign_str() and because coccinelle does not
> handle the TRACE_EVENT() macro I ended up using the following sed script:
> 
>   git grep -l __assign_str | while read a ; do
>       sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
>       mv /tmp/test-file $a;
>   done
> 
> I then searched for __assign_str() that did not end with ';' as those
> were multi line assignments that the sed script above would fail to catch.
> 
> Note, the same updates will need to be done for:
> 
>   __assign_str_len()
>   __assign_rel_str()
>   __assign_rel_str_len()
> 
> I tested this with both an allmodconfig and an allyesconfig (build only for both).
> 
> [1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/
> 
> Cc: Masami Hiramatsu <mhiramat@...nel.org>
> Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
> Cc: Julia Lawall <Julia.Lawall@...ia.fr>
> Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>

For the sound part
Acked-by: Takashi Iwai <tiwai@...e.de>


thanks,

Takashi