linux-kernel - Re: [PATCH v16 06/10] unwind deferred: Use bitmask to determine which callbacks to call

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Message-ID: <20250921194741.77e6f3b8@batman.local.home>
Date: Sun, 21 Sep 2025 19:47:41 -0400
From: Steven Rostedt <rostedt@...nel.org>
To: Josh Poimboeuf <jpoimboe@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 bpf@...r.kernel.org, Masami Hiramatsu <mhiramat@...nel.org>, Mathieu
 Desnoyers <mathieu.desnoyers@...icios.com>, Peter Zijlstra
 <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, Jiri Olsa
 <jolsa@...nel.org>, Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung
 Kim <namhyung@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Andrii
 Nakryiko <andrii@...nel.org>, Indu Bhagat <indu.bhagat@...cle.com>, "Jose
 E. Marchesi" <jemarch@....org>, Beau Belgrave <beaub@...ux.microsoft.com>,
 Jens Remus <jremus@...ux.ibm.com>, Linus Torvalds
 <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>,
 Jens Axboe <axboe@...nel.dk>, Florian Weimer <fweimer@...hat.com>, Sam
 James <sam@...too.org>
Subject: Re: [PATCH v16 06/10] unwind deferred: Use bitmask to determine
 which callbacks to call

On Fri, 19 Sep 2025 18:00:30 -0700
Josh Poimboeuf <jpoimboe@...nel.org> wrote:

> > +		return old & bit;  
> 
> Per the function comment, the function returns 0, 1, or negative.  So
> this should be 
> 
> 		return !!(old & bit)
> 
> right?

Right. Thanks!

-- Steve