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From: Frederic Weisbecker <frederic@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH 4/4] locking/lockdep: Test all incompatible scenario at once in check_irq_usage()
Date: Tue, 16 Apr 2019 17:21:04 +0200	[thread overview]
Message-ID: <20190416152102.GA3501@lenoir> (raw)
In-Reply-To: <20190416112009.GT11158@hirez.programming.kicks-ass.net>

On Tue, Apr 16, 2019 at 01:20:09PM +0200, Peter Zijlstra wrote:
> On Sat, Apr 13, 2019 at 02:35:45AM +0200, Frederic Weisbecker wrote:
> > On Thu, Apr 11, 2019 at 12:46:32PM +0200, Peter Zijlstra wrote:
> > Same here:
> > 
> >   As above, we clear bitnr0 (LOCK_*_READ off) with bitmask ops. First, for all bits
> >   with bitnr1 set (LOCK_ENABLED_*) , add those with bitnr1 cleared (LOCK_USED_IN_*).
> >   And then mask out all bitnr1.
> 
> Ha! you failed to spot my failure, all the above should be bitnr0 of
> course :/

Ooops, right.

> Find updated below.

Very good now, thanks a lot!

  reply	other threads:[~2019-04-16 15:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-02 16:02 [PATCH 0/4] lockdep cleanups and optimizations Frederic Weisbecker
2019-04-02 16:02 ` [PATCH 1/4] locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING Frederic Weisbecker
2019-04-18 11:26   ` [tip:locking/core] " tip-bot for Frederic Weisbecker
2019-04-02 16:02 ` [PATCH 2/4] locking/lockdep: Map remaining magic numbers to lock usage mask names Frederic Weisbecker
2019-04-18 11:26   ` [tip:locking/core] " tip-bot for Frederic Weisbecker
2019-04-02 16:02 ` [PATCH 3/4] locking/lockdep: Use expanded masks on find_usage_*() functions Frederic Weisbecker
2019-04-18 11:27   ` [tip:locking/core] " tip-bot for Frederic Weisbecker
2019-04-02 16:02 ` [PATCH 4/4] locking/lockdep: Test all incompatible scenario at once in check_irq_usage() Frederic Weisbecker
2019-04-09 13:03   ` Peter Zijlstra
2019-04-10  2:28     ` Frederic Weisbecker
2019-04-11 10:46       ` Peter Zijlstra
2019-04-13  0:35         ` Frederic Weisbecker
2019-04-16 11:20           ` Peter Zijlstra
2019-04-16 15:21             ` Frederic Weisbecker [this message]
2019-04-13  6:38   ` Yuyang Du
2019-04-29  6:39   ` [tip:locking/core] locking/lockdep: Test all incompatible scenarios " tip-bot for Frederic Weisbecker

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