linux-kernel - Re: [PATCH 2/5] ftrace: Comment __ftrace_hash_rec_update() and make filter

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Message-ID: <20240605101832.09fb4211@gandalf.local.home>
Date: Wed, 5 Jun 2024 10:18:32 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Mark Rutland <mark.rutland@....com>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, Masami
 Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 2/5] ftrace: Comment __ftrace_hash_rec_update() and make
 filter_hash bool

On Wed, 5 Jun 2024 11:15:38 +0100
Mark Rutland <mark.rutland@....com> wrote:
> > diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> > index 9dcdefe9d1aa..93c7c5fd4249 100644
> > --- a/kernel/trace/ftrace.c
> > +++ b/kernel/trace/ftrace.c
> > @@ -1701,8 +1701,20 @@ static bool skip_record(struct dyn_ftrace *rec)
> >  		!(rec->flags & FTRACE_FL_ENABLED);
> >  }
> >  
> > +/*
> > + * This is the main engine to the ftrace updates.
> > + *
> > + * It will iterate through all the available ftrace functions
> > + * (the ones that ftrace can have callbacks to) and set the flags
> > + * to the associated dyn_ftrace records.  
> 
> I beleive s/to/in/ here, to make this one of:
> 
> 	set the flags in the associated dyn_ftrace records.
> 
> ... rather than:
> 
> 	set the flags to the associated dyn_ftrace records.

Thanks. It's good to get a "native English speaker" response ;-)

> 
> > + *
> > + * @filter_hash: True if for the filter hash is udpated, false for the
> > + *               notrace hash  
> 
> Typo: s/udpated/updated/
> 
> ... though I couldn't parse this regardless; maybe:
> 
> 	@filter_hash: true to update the filter hash, false to update
> 		      the notrace hash

Sure.

-- Steve

> 
> Mark.
> 
> > + * @inc: True to add this hash, false to remove it (increment the
> > + *       recorder counters or decrement them).
> > + */
> >  static bool __ftrace_hash_rec_update(struct ftrace_ops *ops,
> > -				     int filter_hash,
> > +				     bool filter_hash,
> >  				     bool inc)
> >  {
> >  	struct ftrace_hash *hash;
> > -- 
> > 2.43.0
> > 
> >