On Fri, 31 Jul 2009 14:14:57 -0400 (EDT) Robert P. J. Day wrote:
> On Fri, 31 Jul 2009, Randy Dunlap wrote:
>
> > From: Randy Dunlap <randy.dunlap at oracle.com>
> >
> > Move module_params to near the end of the source file so that
> > their references are already known/defined. Fixes build errors:
> >
> > drivers/staging/android/lowmemorykiller.c: In function '__check_cost':
> > drivers/staging/android/lowmemorykiller.c:60: error: 'lowmem_shrinker' undeclared (first use in this function)
> > drivers/staging/android/lowmemorykiller.c: At top level:
> > drivers/staging/android/lowmemorykiller.c:60: error: 'lowmem_shrinker' undeclared here (not in a function)
> > drivers/staging/android/lowmemorykiller.c:60: warning: type defaults to 'int' in declaration of 'type name'
> >
> > Signed-off-by: Randy Dunlap <randy.dunlap at oracle.com>
> > ---
> > drivers/staging/android/lowmemorykiller.c | 14 +++++++-------
> > 1 file changed, 7 insertions(+), 7 deletions(-)
> >
> > --- linux-next-20090731.orig/drivers/staging/android/lowmemorykiller.c
> > +++ linux-next-20090731/drivers/staging/android/lowmemorykiller.c
> > @@ -57,13 +57,6 @@ static int lowmem_minfree_size = 4;
> > printk(x); \
> > } while (0)
> >
> > -module_param_named(cost, lowmem_shrinker.seeks, int, S_IRUGO | S_IWUSR);
> > -module_param_array_named(adj, lowmem_adj, int, &lowmem_adj_size,
> > - S_IRUGO | S_IWUSR);
> > -module_param_array_named(minfree, lowmem_minfree, uint, &lowmem_minfree_size,
> > - S_IRUGO | S_IWUSR);
> > -module_param_named(debug_level, lowmem_debug_level, uint, S_IRUGO | S_IWUSR);
> > -
> > static int lowmem_shrink(int nr_to_scan, gfp_t gfp_mask)
> > {
> > struct task_struct *p;
> > @@ -166,6 +159,13 @@ static void __exit lowmem_exit(void)
> > unregister_shrinker(&lowmem_shrinker);
> > }
> >
> > +module_param_named(cost, lowmem_shrinker.seeks, int, S_IRUGO | S_IWUSR);
> > +module_param_array_named(adj, lowmem_adj, int, &lowmem_adj_size,
> > + S_IRUGO | S_IWUSR);
> > +module_param_array_named(minfree, lowmem_minfree, uint, &lowmem_minfree_size,
> > + S_IRUGO | S_IWUSR);
> > +module_param_named(debug_level, lowmem_debug_level, uint, S_IRUGO | S_IWUSR);
> > +
> > module_init(lowmem_init);
> > module_exit(lowmem_exit);
>
> isn't that a bit non-standard? from what i've seen, the standard
> seems to be to define something as a module parameter *immediately*
> after its definition, not to collect them all at the bottom of the
> source file separate from the definitions. *is* there a standard for
> that?
not that i know of. and we generally prefer to avoid forward declarations
just to satisfy such errors.
---
~Randy
LPC 2009, Sept. 23-25, Portland, Oregon
http://linuxplumbersconf.org/2009/
