linux-kernel - Re: [PATCH v3 tip/core/rcu 1/9] rcu: Add call_rcu

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20140810012924.GO5821@linux.vnet.ibm.com>
Date:	Sat, 9 Aug 2014 18:29:24 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, rostedt@...dmis.org,
	dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com,
	fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com
Subject: Re: [PATCH v3 tip/core/rcu 1/9] rcu: Add call_rcu_tasks()

On Sat, Aug 09, 2014 at 08:24:00PM +0200, Peter Zijlstra wrote:
> On Sat, Aug 09, 2014 at 08:19:20PM +0200, Peter Zijlstra wrote:
> > How about we simply assume 'idle' code, as defined by the rcu idle hooks
> > are safe? Why do we want to bend over backwards to cover this?
> 
> The thing is, we already have the special rcu trace hooks for tracing
> inside this rcu-idle section, so why go beyond this now?

I have to defer to Steven and Masami on this one, but I would guess that
they want the ability to trace the idle loop for the same reasons they
stated earlier.

							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/