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Subject: Re: [PATCH 7/9] usb: usbip: eliminate anonymous module_init &
 module_exit
To:     Randy Dunlap <rdunlap@infradead.org>, linux-kernel@vger.kernel.org
Cc:     "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Stefan Hajnoczi <stefanha@redhat.com>,
        Jens Axboe <axboe@kernel.dk>, Amit Shah <amit@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Eli Cohen <eli@mellanox.com>,
        Saeed Mahameed <saeedm@nvidia.com>,
        Leon Romanovsky <leon@kernel.org>,
        Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
        Florian Westphal <fw@strlen.de>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Felipe Balbi <felipe.balbi@linux.intel.com>,
        =?UTF-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= <mirq-linux@rere.qmqm.pl>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Krzysztof Opasiak <k.opasiak@samsung.com>,
        Igor Kotrasinski <i.kotrasinsk@samsung.com>,
        Valentina Manea <valentina.manea.m@gmail.com>,
        Shuah Khan <shuah@kernel.org>,
        Jussi Kivilinna <jussi.kivilinna@mbnet.fi>,
        Joachim Fritschi <jfritschi@freenet.de>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Thomas Gleixner <tglx@linutronix.de>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ingo Molnar <mingo@kernel.org>,
        Karol Herbst <karolherbst@gmail.com>,
        Pekka Paalanen <ppaalanen@gmail.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>, netfilter-devel@vger.kernel.org,
        coreteam@netfilter.org, netdev@vger.kernel.org,
        linux-block@vger.kernel.org, linux-crypto@vger.kernel.org,
        linux-rdma@vger.kernel.org, linux-scsi@vger.kernel.org,
        linux-usb@vger.kernel.org, nouveau@lists.freedesktop.org,
        virtualization@lists.linux-foundation.org, x86@kernel.org,
        Shuah Khan <skhan@linuxfoundation.org>
References: <20220316192010.19001-1-rdunlap@infradead.org>
 <20220316192010.19001-8-rdunlap@infradead.org>
From:   Shuah Khan <skhan@linuxfoundation.org>
Message-ID: <282f4857-7b4f-810e-af0e-e9ca8129c7fc@linuxfoundation.org>
Date:   Fri, 18 Mar 2022 16:45:54 -0600
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On 3/16/22 1:20 PM, Randy Dunlap wrote:
> Eliminate anonymous module_init() and module_exit(), which can lead to
> confusion or ambiguity when reading System.map, crashes/oops/bugs,
> or an initcall_debug log.
> 
> Give each of these init and exit functions unique driver-specific
> names to eliminate the anonymous names.
> 
> Example 1: (System.map)
>   ffffffff832fc78c t init
>   ffffffff832fc79e t init
>   ffffffff832fc8f8 t init
> 
> Example 2: (initcall_debug log)
>   calling  init+0x0/0x12 @ 1
>   initcall init+0x0/0x12 returned 0 after 15 usecs
>   calling  init+0x0/0x60 @ 1
>   initcall init+0x0/0x60 returned 0 after 2 usecs
>   calling  init+0x0/0x9a @ 1
>   initcall init+0x0/0x9a returned 0 after 74 usecs
> 
> Fixes: 80fd9cd52de6 ("usbip: vudc: Add VUDC main file")
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Cc: Krzysztof Opasiak <k.opasiak@samsung.com>
> Cc: Igor Kotrasinski <i.kotrasinsk@samsung.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Valentina Manea <valentina.manea.m@gmail.com>
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Shuah Khan <skhan@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
> ---
>   drivers/usb/usbip/vudc_main.c |    8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> --- lnx-517-rc8.orig/drivers/usb/usbip/vudc_main.c
> +++ lnx-517-rc8/drivers/usb/usbip/vudc_main.c
> @@ -28,7 +28,7 @@ static struct platform_driver vudc_drive
>   
>   static struct list_head vudc_devices = LIST_HEAD_INIT(vudc_devices);
>   
> -static int __init init(void)
> +static int __init vudc_init(void)
>   {
>   	int retval = -ENOMEM;
>   	int i;
> @@ -86,9 +86,9 @@ cleanup:
>   out:
>   	return retval;
>   }
> -module_init(init);
> +module_init(vudc_init);
>   
> -static void __exit cleanup(void)
> +static void __exit vudc_cleanup(void)
>   {
>   	struct vudc_device *udc_dev = NULL, *udc_dev2 = NULL;
>   
> @@ -103,7 +103,7 @@ static void __exit cleanup(void)
>   	}
>   	platform_driver_unregister(&vudc_driver);
>   }
> -module_exit(cleanup);
> +module_exit(vudc_cleanup);
>   
>   MODULE_DESCRIPTION("USB over IP Device Controller");
>   MODULE_AUTHOR("Krzysztof Opasiak, Karol Kosik, Igor Kotrasinski");
> 

Thanks for fixing this.

Acked-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah