linux-kernel - Re: [PATCH 1/2 v3] tracing/events: provide string with undefined size support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 19 Apr 2009 14:35:51 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Zhaolei <zhaolei@...fujitsu.com>,
	Tom Zanussi <tzanussi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 1/2 v3] tracing/events: provide string with undefined
	size support

On Sun, Apr 19, 2009 at 02:15:36PM +0800, Li Zefan wrote:
> > @@ -417,18 +495,22 @@ static struct ftrace_event_call event_##call;				\
> >  									\
> >  static void ftrace_raw_event_##call(proto)				\
> >  {									\
> > +	struct ftrace_str_offsets_##call __maybe_unused __str_offsets;  \
> >  	struct ftrace_event_call *call = &event_##call;			\
> >  	struct ring_buffer_event *event;				\
> >  	struct ftrace_raw_##call *entry;				\
> >  	unsigned long irq_flags;					\
> > +	int __str_size = 0;						\
> >  	int pc;								\
> >  									\
> >  	local_save_flags(irq_flags);					\
> >  	pc = preempt_count();						\
> >  									\
> > +	tstruct;							\
> > +									\
> >  	event = trace_current_buffer_lock_reserve(event_##call.id,	\
> > -				  sizeof(struct ftrace_raw_##call),	\
> > -				  irq_flags, pc);			\
> > +				 sizeof(struct ftrace_raw_##call) + __str_size,\
> 
> sizeof(*entry) will make it much shorter. ;)


Heh, you're right :-)
I will update that.


> 
> > +				 irq_flags, pc);			\
> >  	if (!event)							\
> >  		return;							\
> >  	entry	= ring_buffer_event_data(event);			\
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/