linux-kernel - Re: [PATCH] kobject_uevent: add uevent

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: <2025040744-anvil-tiptop-bbdb@gregkh>
Date: Mon, 7 Apr 2025 09:01:54 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: zhoumin <teczm@...mail.com>
Cc: akpm@...ux-foundation.org, dakr@...nel.org,
	linux-kernel@...r.kernel.org, rafael@...nel.org,
	viro@...iv.linux.org.uk
Subject: Re: [PATCH] kobject_uevent: add uevent_helper exist check

On Sun, Apr 06, 2025 at 02:19:15PM +0800, zhoumin wrote:
> Hi Andrew,
> 
> Thank you for your feedback.
> 
> > Is there any measurable reduction in boot time?
> 
> This depends on the number of uevent and the performance of the device. 
> In fact, I found this issue during a project to optomize boot time,
> and on my embedded device, it can be optimized by at least 2 seconds.

So you are spending 2 seconds in failing to lookup the uevent helper
path?  That feels really wrong, how long does your boot take overall?
What % is 2 seconds?

thanks,

greg k-h