On Sun, Dec 14, 2014 at 01:25:56PM -0500, Steven Rostedt wrote:
> On Sun, 14 Dec 2014 10:18:35 -0800
> "Paul E. McKenney" wrote:
>
> > > With your feed back, and because I would like this to go into 3.19, I
> > > would like to keep the current patch as is (with the read_mostly
> > > update, which
On Sun, 14 Dec 2014 10:18:35 -0800
"Paul E. McKenney" wrote:
> > With your feed back, and because I would like this to go into 3.19, I
> > would like to keep the current patch as is (with the read_mostly
> > update, which I'm currently testing). We can always change it later
> > after call_rcu()
On Sun, Dec 14, 2014 at 01:15:38PM -0500, Steven Rostedt wrote:
> On Sun, 14 Dec 2014 10:08:54 -0800
> "Paul E. McKenney" wrote:
>
> > On Sun, Dec 14, 2014 at 11:53:32AM -0500, Steven Rostedt wrote:
> > > On Sun, 14 Dec 2014 11:41:05 -0500
> > > Steven Rostedt wrote:
> > >
> > > > From: "Steven
On Sun, 14 Dec 2014 10:08:54 -0800
"Paul E. McKenney" wrote:
> On Sun, Dec 14, 2014 at 11:53:32AM -0500, Steven Rostedt wrote:
> > On Sun, 14 Dec 2014 11:41:05 -0500
> > Steven Rostedt wrote:
> >
> > > From: "Steven Rostedt (Red Hat)"
> > >
> > > In order to move enabling of trace events to j
On Sun, Dec 14, 2014 at 12:44:31PM -0500, Steven Rostedt wrote:
> On Sun, 14 Dec 2014 17:29:28 + (UTC)
> Mathieu Desnoyers wrote:
>
> > Given that your reason for having this RCU-specific logic in tracepoint.c
> > rather than within call_rcu*() is not slowing down a fast-path, how about
> > c
On Sun, Dec 14, 2014 at 11:53:32AM -0500, Steven Rostedt wrote:
> On Sun, 14 Dec 2014 11:41:05 -0500
> Steven Rostedt wrote:
>
> > From: "Steven Rostedt (Red Hat)"
> >
> > In order to move enabling of trace events to just after mm_init(), the
> > tracepoint enable code can not use call_rcu_sche
On Sun, 14 Dec 2014 17:29:28 + (UTC)
Mathieu Desnoyers wrote:
> Given that your reason for having this RCU-specific logic in tracepoint.c
> rather than within call_rcu*() is not slowing down a fast-path, how about
> creating a new call_rcu_early() and call_rcu_sched_early() which can be
> cal
cKenney"
>
> Sent: Sunday, December 14, 2014 12:21:36 PM
> Subject: Re: [PATCH 1/3] tracepoints: Do not use call_rcu_sched() before
> early_initcall()
>
> On Sun, 14 Dec 2014 12:14:57 -0500
> Steven Rostedt wrote:
>
> > If IRQ setup, or other core pieces of code can
On Sun, 14 Dec 2014 12:14:57 -0500
Steven Rostedt wrote:
> If IRQ setup, or other core pieces of code can use this, then I would
> agree that rcu should be changed. But until then, I rather not add
> another conditional to the core RCU code.
Also, call_rcu*() is called from several hot paths. Th
On Sun, 14 Dec 2014 17:05:49 + (UTC)
Mathieu Desnoyers wrote:
> > #ifdef CONFIG_MODULES
> > /*
> > * Tracepoint module list mutex protects the local module list.
> > @@ -76,7 +85,16 @@ static inline void release_probes(struct tracepoint_func
> > *old)
> > if (old) {
> > s
- Original Message -
> From: "Steven Rostedt"
> To: linux-kernel@vger.kernel.org
> Cc: "Linus Torvalds" , "Ingo Molnar"
> , "Andrew Morton"
> , "Thomas Gleixner" , "Mathieu
> Desnoyers"
> , "Paul E. McKenney"
>
> Sent: Sunday, December 14, 2014 11:41:05 AM
> Subject: [PATCH 1/3] tracep
On Sun, 14 Dec 2014 11:41:05 -0500
Steven Rostedt wrote:
> From: "Steven Rostedt (Red Hat)"
>
> In order to move enabling of trace events to just after mm_init(), the
> tracepoint enable code can not use call_rcu_sched() because rcu isn't
> even initialized yet. Since this can only happen befo
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