linux-kernel - Re: [PATCH RFC tip/core/rcu 2/2] rcu: Fix broken strings in RCU's source code.

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:	Thu, 17 May 2012 15:41:46 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...ymtl.ca, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	fweisbec@...il.com, patches@...aro.org
Subject: Re: [PATCH RFC tip/core/rcu 2/2] rcu: Fix broken strings in RCU's
 source code.

On Thu, May 17, 2012 at 03:23:22PM -0700, Josh Triplett wrote:
> On Thu, May 17, 2012 at 03:12:45PM -0700, Paul E. McKenney wrote:
> > @@ -1184,27 +1183,27 @@ rcu_torture_printk(char *page)
> >  	}
> >  	cnt += sprintf(&page[cnt], "%s%s ", torture_type, TORTURE_FLAG);
> >  	cnt += sprintf(&page[cnt],
> > -		       "rtc: %p ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d "
> > -		       "rtmbe: %d rtbke: %ld rtbre: %ld "
> > -		       "rtbf: %ld rtb: %ld nt: %ld "
> > -		       "onoff: %ld/%ld:%ld/%ld "
> > -		       "barrier: %ld/%ld:%ld",
> > +		       "rtc: %p ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
> >  		       rcu_torture_current,
> >  		       rcu_torture_current_version,
> >  		       list_empty(&rcu_torture_freelist),
> >  		       atomic_read(&n_rcu_torture_alloc),
> >  		       atomic_read(&n_rcu_torture_alloc_fail),
> > -		       atomic_read(&n_rcu_torture_free),
> > +		       atomic_read(&n_rcu_torture_free));
> > +	cnt += sprintf(&page[cnt], "rtmbe: %d rtbke: %ld rtbre: %ld ",
> >  		       atomic_read(&n_rcu_torture_mberror),
> >  		       n_rcu_torture_boost_ktrerror,
> > -		       n_rcu_torture_boost_rterror,
> > +		       n_rcu_torture_boost_rterror);
> > +	cnt += sprintf(&page[cnt], "rtbf: %ld rtb: %ld nt: %ld ",
> >  		       n_rcu_torture_boost_failure,
> >  		       n_rcu_torture_boosts,
> > -		       n_rcu_torture_timers,
> > +		       n_rcu_torture_timers);
> > +	cnt += sprintf(&page[cnt], "onoff: %ld/%ld:%ld/%ld ",
> >  		       n_online_successes,
> >  		       n_online_attempts,
> >  		       n_offline_successes,
> > -		       n_offline_attempts,
> > +		       n_offline_attempts);
> > +	cnt += sprintf(&page[cnt], "barrier: %ld/%ld:%ld",
> >  		       n_barrier_successes,
> >  		       n_barrier_attempts,
> >  		       n_rcu_torture_barrier_error);
> 
> A change like this placates tools like checkpatch, but doesn't actually
> fix the problem. :)

The formatting would frustrate most people trying to grep for the
debugfs output anyway, though.

But the main reason for the change is that it makes it easier to see
which quantity goes with which sprintf() format specifier.  (Lazy and
self-indulgent, I know!!!)

						Thanx, Paul

--
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/