linux-kernel - Re: [PATCH 03/19] context_tracking: Rename context_tracking_enter/exit() to ct_user

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Date:   Wed, 9 Mar 2022 22:21:57 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, Phil Auld <pauld@...hat.com>,
        Alex Belits <abelits@...vell.com>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Xiongfeng Wang <wangxiongfeng2@...wei.com>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yu Liao <liaoyu15@...wei.com>,
        Boqun Feng <boqun.feng@...il.com>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Uladzislau Rezki <uladzislau.rezki@...y.com>,
        Joel Fernandes <joel@...lfernandes.org>
Subject: Re: [PATCH 03/19] context_tracking: Rename
 context_tracking_enter/exit() to ct_user_enter/exit()

On Sat, Mar 05, 2022 at 03:02:33PM +0100, Peter Zijlstra wrote:
> On Wed, Mar 02, 2022 at 04:47:54PM +0100, Frederic Weisbecker wrote:
> > diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
> > index 83e050675b23..e8e58c10f135 100644
> > --- a/kernel/context_tracking.c
> > +++ b/kernel/context_tracking.c
> > @@ -103,7 +103,7 @@ void noinstr __ct_user_enter(enum ctx_state state)
> >  }
> >  EXPORT_SYMBOL_GPL(__ct_user_enter);
> >  
> > -void context_tracking_enter(enum ctx_state state)
> > +void ct_user_enter(enum ctx_state state)
> >  {
> >  	unsigned long flags;
> >  
> > @@ -122,8 +122,8 @@ void context_tracking_enter(enum ctx_state state)
> >  	__ct_user_enter(state);
> >  	local_irq_restore(flags);
> >  }
> > -NOKPROBE_SYMBOL(context_tracking_enter);
> > -EXPORT_SYMBOL_GPL(context_tracking_enter);
> > +NOKPROBE_SYMBOL(ct_user_enter);
> > +EXPORT_SYMBOL_GPL(ct_user_enter);
> >  
> >  /**
> >   * user_enter_callable() - Unfortunate ASM callable version of user_enter() for
> > @@ -173,7 +173,7 @@ void noinstr __ct_user_exit(enum ctx_state state)
> >  }
> >  EXPORT_SYMBOL_GPL(__ct_user_exit);
> >  
> > -void context_tracking_exit(enum ctx_state state)
> > +void ct_user_exit(enum ctx_state state)
> >  {
> >  	unsigned long flags;
> >  
> > @@ -184,8 +184,8 @@ void context_tracking_exit(enum ctx_state state)
> >  	__ct_user_exit(state);
> >  	local_irq_restore(flags);
> >  }
> > -NOKPROBE_SYMBOL(context_tracking_exit);
> > -EXPORT_SYMBOL_GPL(context_tracking_exit);
> > +NOKPROBE_SYMBOL(ct_user_exit);
> > +EXPORT_SYMBOL_GPL(ct_user_exit);
> >  
> >  /**
> >   * user_exit_callable() - Unfortunate ASM callable version of user_exit() for
> 
> Why is it NOKPROBE but not notrace, also local_irq_*() include explicit
> tracepoints.

Again stuff I need to fix ahead. Thanks for catching that.

Thanks!