Re: [PATCH 1/4] Extend notifier_call_chain to count nr_calls made.

[Randy Dunlap]

Gautham R Shenoy wrote:
> On Tue, Nov 14, 2006 at 10:18:06AM -0800, Randy Dunlap wrote:
> > On Tue, 14 Nov 2006 17:50:51 +0530 Gautham R Shenoy wrote:
> >
> > >  include/linux/notifier.h |    8 +++
> > >  kernel/sys.c             |   97 +++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 89 insertions(+), 16 deletions(-)
> > >
> > > Index: hotplug/kernel/sys.c
> > > ===================================================================
> > > --- hotplug.orig/kernel/sys.c
> > > +++ hotplug/kernel/sys.c
> > > @@ -134,19 +134,41 @@ static int notifier_chain_unregister(str
> > >  	return -ENOENT;
> > >  }
> > >  
> > > +/*
> > > + * notifier_call_chain - Informs the registered notifiers about an event.
> > > + *
> > > + *	@nl:		Pointer to head of the blocking notifier chain
> > > + *	@val:		Value passed unmodified to notifier function
> > > + *	@v:		Pointer passed unmodified to notifier function
> > > + *	@nr_to_call:	Number of notifier functions to be called. Don't care
> > > + *		     	value of this parameter is -1.
> > > + *	@nr_calls:	Records the number of notifications sent. Don't care
> > > + *		   	value of this field is NULL.
> > > + *
> > > + * 	RETURN VALUE:	notifier_call_chain returns the value returned by the
> > > + *			last notifier function called.
> > > + */
> > You can make that comment block be kernel-doc format by using
> > /**
> > as the comment introduction and removing the blank line after the
> > function name & short description.
>
> Will do that. But out of curiousity, do the comments of even static functions
> get reflected in kernel doc ? :?

They can be, but static functions are low priority for kernel-doc
IMO, so it's not a big deal to me if you don't make that be kernel-doc.

> > >  static int __kprobes notifier_call_chain(struct notifier_block **nl,
> > > -		unsigned long val, void *v)
> > > +					unsigned long val, void *v,
> > > +					int nr_to_call,	unsigned int *nr_calls)
> > >  {
> > >  	int ret = NOTIFY_DONE;
> > >  	struct notifier_block *nb, *next_nb;
> > ...
> > >  }

Thanks,
--
~Randy
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