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From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Xiaobo Chi <xiaobo.chi@nokia.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2] vhost: fix eventfd_link.ko insertion failure problem
Date: Tue, 24 Nov 2015 19:05:42 +0100	[thread overview]
Message-ID: <3118012.BOtUj3c8T2@xps13> (raw)
In-Reply-To: <20151111070721.GX2326@yliu-dev.sh.intel.com>

> > Problem:if I firstly insert my kmod_test.ko, then insert eventfd_link.ko,
> > error will happen with hint " Device or resource busy". This is because
> > the default minor device number, 0, has been occupied by my kmod_test.ko .
> > 
> > root@distro:~/test$ lsmod
> > Module                  Size  Used by
> > kmod_test                927  0
> > vboxsf                 35930  4
> > vboxguest             222130  1 vboxsf
> > microcode              10315  0
> > autofs4                25051  0
> > root@distro:~/test$ insmod ./eventfd_link.ko
> > insmod: ERROR: could not insert module ./eventfd_link.ko: Device or
> > resource busy
> > 
> > Explanation: For miscdevices, the major device_no is same, so the minor
> > device_no should be set to ditinguish different misc devices;  if not set
> > the minor, it may fail while insmod due to the default minor value, 0, has
> > been used by other miscdevice. MISC_DYNAMIC_MINOR means to let Linux
> > kernel dynamically assign one minor devide number while loading.
> > 
> > Signed-off-by: Xiaobo Chi <xiaobo.chi@nokia.com>
> Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>

Applied, thanks

      reply	other threads:[~2015-11-24 18:07 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-06  6:04 [dpdk-dev] [PATCH] vhost: eventfd_link's minor number shall be specified Xiaobo Chi
2015-11-09  4:22 ` Yuanhan Liu
2015-11-09 10:03   ` Chi, Xiaobo (Nokia - CN/Hangzhou)
2015-11-09 10:19     ` Chi, Xiaobo (Nokia - CN/Hangzhou)
2015-11-09 12:58       ` Yuanhan Liu
2015-11-10  2:24         ` Chi, Xiaobo (Nokia - CN/Hangzhou)
2015-11-11  6:57 ` [dpdk-dev] [PATCH v2] vhost: fix eventfd_link.ko insertion failure problem Xiaobo Chi
2015-11-11  7:07   ` Yuanhan Liu
2015-11-24 18:05     ` Thomas Monjalon [this message]

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