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([2001:a61:2482:101:a081:4793:30bf:f3d5]) by smtp.gmail.com with ESMTPSA id v124sm35279304wme.45.2020.05.13.01.30.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 May 2020 01:30:23 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 01/14] prctl.2: tfix clarify that prctl can apply to threads To: Dave Martin References: <1589301419-24459-1-git-send-email-Dave.Martin@arm.com> <1589301419-24459-2-git-send-email-Dave.Martin@arm.com> From: "Michael Kerrisk (man-pages)" Message-ID: Date: Wed, 13 May 2020 10:30:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <1589301419-24459-2-git-send-email-Dave.Martin@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org On 5/12/20 6:36 PM, Dave Martin wrote: > The current synopsis for prctl(2) misleadingly claims that prctl > operates on a process. Rather, some (in fact, most) prctls operate > on a thread. > > The wording probably dates back to the old days when Linux didn't > really have threads at all. > > Reword as appropriate. Thanks, Dave. Patch applied. Cheers, Michael > Signed-off-by: Dave Martin > --- > man2/prctl.2 | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/man2/prctl.2 b/man2/prctl.2 > index 7a5af76..7932ada 100644 > --- a/man2/prctl.2 > +++ b/man2/prctl.2 > @@ -53,7 +53,7 @@ > .\" > .TH PRCTL 2 2020-04-11 "Linux" "Linux Programmer's Manual" > .SH NAME > -prctl \- operations on a process > +prctl \- operations on a process or thread > .SH SYNOPSIS > .nf > .B #include > @@ -63,6 +63,10 @@ prctl \- operations on a process > .fi > .SH DESCRIPTION > .BR prctl () > +manipulates various aspects of the behavior > +of the calling thread or process. > +.PP > +.BR prctl () > is called with a first argument describing what to do > (with values defined in \fI\fP), and further > arguments with a significance depending on the first one. > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/