From: Peter Zijlstra <peterz@infradead.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dave Anderson <anderson@redhat.com>,
Ingo Molnar <mingo@kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Wang Shu <shuwang@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] introduce for_each_process_thread_{break,continue}() helpers
Date: Mon, 8 Aug 2016 14:20:14 +0200 [thread overview]
Message-ID: <20160808122014.GE6879@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160803202609.GA11419@redhat.com>
On Wed, Aug 03, 2016 at 10:26:09PM +0200, Oleg Nesterov wrote:
> Not sure. I'd like to do something simple for the start. We need to make
> show_state_filter() "preemptible" in any case. And even killable, I think.
> Not only it can trivially trigger the soft-lockups (at least), it can simply
> never finish.
Yeah, no objection raelly. Just make sure to put a comment explaining
the limitation/issues with whatever you descide to go for.
next prev parent reply other threads:[~2016-08-08 12:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-25 16:23 [PATCH 0/3] introduce for_each_process_thread_{break,continue}() helpers Oleg Nesterov
2016-07-25 16:23 ` [PATCH 1/3] " Oleg Nesterov
2016-08-02 11:58 ` Peter Zijlstra
2016-08-03 20:26 ` Oleg Nesterov
2016-08-08 12:20 ` Peter Zijlstra [this message]
2016-07-25 16:23 ` [PATCH 2/3] hung_task.c: change rcu_lock_break() code to use for_each_process_thread_break/continue Oleg Nesterov
2016-07-25 16:23 ` [PATCH 3/3] hung_task.c: change the "max_count" " Oleg Nesterov
2016-07-26 18:57 ` [PATCH 0/1] (Was: introduce for_each_process_thread_{break,continue}() helpers) Oleg Nesterov
2016-07-26 18:57 ` [PATCH 1/1] stop_machine: touch_nmi_watchdog() after MULTI_STOP_PREPARE Oleg Nesterov
2016-07-27 8:06 ` Thomas Gleixner
2016-07-27 10:42 ` [tip:core/urgent] stop_machine: Touch_nmi_watchdog() " tip-bot for Oleg Nesterov
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