Messages in this thread | | | Date | Fri, 9 Sep 2011 21:10:29 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH -next] drivers/net: Makefile, fix netconsole link order |
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On Sat, 10 Sep 2011 10:43:32 +0800 Lin Ming <ming.m.lin@intel.com> wrote:
> On Sat, 2011-09-10 at 08:00 +0800, Andrew Morton wrote: > > > > +obj-$(CONFIG_NETCONSOLE) += netconsole.o > > > > It would be preferable to fix this with initcall ordering. Perhaps by > > switching init_netconsole() to subsys_initcall. > > subsys_initcall is defined as __define_initcall("4",fn,4). > In !MODULE case, device driver module_int() is defined as > __define_initcall("6",fn,6)
oop, yes, I am chronologically challenged.
> If we use subsys_initcall for init_netconsole, it will still be called > before network device driver is initialized. > > How about late_initcall? > > (Not tested yet) > > >From 11f4f035e96ff430192d0a75552dd715acb5f3b8 Mon Sep 17 00:00:00 2001 > From: Lin Ming <ming.m.lin@intel.com> > Date: Sat, 10 Sep 2011 10:36:10 +0800 > Subject: [PATCH] drivers/net: Makefile, fix netconsole link order > > Commit 88491d8(drivers/net: Kconfig & Makefile cleanup) causes a > regression that netconsole does not work if netconsole and network > device driver are build into kernel, because netconsole is linked before > network device driver. > > Fixes it by switching init_netconsole() to late_initcall if it's > build-in. > > Signed-off-by: Lin Ming <ming.m.lin@intel.com> > --- > drivers/net/netconsole.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c > index dfc8272..914be29 100644 > --- a/drivers/net/netconsole.c > +++ b/drivers/net/netconsole.c > @@ -799,5 +799,9 @@ static void __exit cleanup_netconsole(void) > } > } > > +#ifdef MODULE > module_init(init_netconsole); > module_exit(cleanup_netconsole); > +#else > +late_initcall(init_netconsole); > +#endif /* !MODULE */
That should work, unless any net driver is weirdly also using late_initcall. But if there are such drivers, they would have failed with the old Makefile ordering.
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