From: Steven Rostedt <rostedt@goodmis.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Joel Fernandes <joelaf@google.com>,
Joel Fernandes <joel@joelfernandes.org>,
LKML <linux-kernel@vger.kernel.org>,
"Cc: Android Kernel" <kernel-team@android.com>,
Boqun Feng <boqun.feng@gmail.com>,
Byungchul Park <byungchul.park@lge.com>,
Ingo Molnar <mingo@redhat.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Glexiner <tglx@linutronix.de>,
Tom Zanussi <tom.zanussi@linux.intel.com>,
will.deacon@arm.com
Subject: Re: [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage
Date: Wed, 8 Aug 2018 12:24:04 -0400 [thread overview]
Message-ID: <20180808122404.67bdb77b@gandalf.local.home> (raw)
In-Reply-To: <20180808160243.GQ24813@linux.vnet.ibm.com>
On Wed, 8 Aug 2018 09:02:43 -0700
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> > Which leaves us with sparc, arm, mips, sh and powerpc.
> >
> > sh is almost dead, and powerpc can be fixed, which I guess leaves us
> > with sparc, arm and mips.
>
> If we want to stick with the current srcu_read_lock() and srcu_read_unlock(),
> you mean? I would like that sort of outcome, at least assuming we are not
> hammering any of the architectures.
I would go with the local_inc approach, and even add a
srcu_read_un/lock_nmi() that does that if you want. Probably should add
lockdep to detect if the _nmi calls is ever used along with non _nmi
calls and complain about that.
But this will be something for the next merge window, not the one
coming up.
-- Steve
next prev parent reply other threads:[~2018-08-08 16:24 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-30 22:24 [PATCH v12 0/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 1/3] lockdep: use this_cpu_ptr instead of get_cpu_var stats Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 2/3] tracepoint: Make rcuidle tracepoint callers use SRCU Joel Fernandes
2018-07-30 23:10 ` Steven Rostedt
2018-08-10 15:35 ` Steven Rostedt
2018-08-10 16:32 ` Steven Rostedt
2018-07-30 22:24 ` [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-08-06 19:50 ` Steven Rostedt
2018-08-07 0:43 ` Joel Fernandes
2018-08-07 1:43 ` Steven Rostedt
2018-08-07 13:33 ` Joel Fernandes
2018-08-07 13:49 ` Steven Rostedt
2018-08-07 14:10 ` Joel Fernandes
2018-08-07 14:34 ` Steven Rostedt
2018-08-07 14:48 ` Joel Fernandes
2018-08-07 15:09 ` Steven Rostedt
2018-08-07 15:24 ` Joel Fernandes
2018-08-07 23:45 ` Steven Rostedt
2018-08-07 23:54 ` Joel Fernandes
2018-08-08 0:48 ` Steven Rostedt
2018-08-08 1:17 ` Joel Fernandes
2018-08-08 1:55 ` Steven Rostedt
2018-08-08 2:13 ` Joel Fernandes
2018-08-08 2:28 ` Steven Rostedt
2018-08-08 3:44 ` Joel Fernandes
2018-08-08 3:53 ` Joel Fernandes
2018-08-08 5:06 ` Joel Fernandes
2018-08-08 12:46 ` Steven Rostedt
2018-08-08 13:03 ` Paul E. McKenney
2018-08-08 13:07 ` Steven Rostedt
2018-08-08 14:33 ` Paul E. McKenney
2018-08-08 14:49 ` Steven Rostedt
2018-08-08 15:05 ` Paul E. McKenney
2018-08-08 15:23 ` Steven Rostedt
2018-08-08 16:02 ` Paul E. McKenney
2018-08-08 16:24 ` Steven Rostedt [this message]
2018-08-08 17:21 ` Paul E. McKenney
2018-08-08 13:00 ` Paul E. McKenney
2018-08-08 14:10 ` Joel Fernandes
2018-08-08 14:49 ` Paul E. McKenney
2018-08-08 19:24 ` Joel Fernandes
2018-08-08 20:18 ` Paul E. McKenney
2018-08-08 22:15 ` Joel Fernandes
2018-08-08 22:47 ` Paul E. McKenney
2018-08-09 12:18 ` joel
2018-08-08 14:27 ` Steven Rostedt
2018-08-08 14:42 ` Paul E. McKenney
2018-08-08 15:27 ` Steven Rostedt
2018-08-08 16:03 ` Paul E. McKenney
2018-08-02 14:55 ` [PATCH v12 0/3] " Masami Hiramatsu
2018-08-03 2:57 ` Joel Fernandes
2018-08-03 7:23 ` Masami Hiramatsu
2018-08-04 4:51 ` Joel Fernandes
2018-08-05 16:46 ` Joel Fernandes
2018-08-06 2:07 ` Masami Hiramatsu
2018-08-06 15:24 ` Joel Fernandes
2018-08-03 7:34 ` Masami Hiramatsu
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