Date: Mon, 8 Jan 2024 16:21:26 +0100 From: =?UTF-8?Q?Bojan_Novkovi=C4=87?= <bnovkov@freebsd.org> To: himanshu@thechauhan.dev Cc: freebsd-riscv@freebsd.org Subject: Re: Calling a function on other CPUs in an SMP machine Message-ID: <CA%2B=MDrGxL19tenSwXXGNNr3iEhomgeo49isGdq90NoFPW%2B1Wew@mail.gmail.com> In-Reply-To: <9992B290-04CA-485C-A79B-5CDFC8AA917D@fer.hr> References: <7A8DC6C8-9582-455C-B05D-9F24838A9070@thechauhan.dev> <9992B290-04CA-485C-A79B-5CDFC8AA917D@fer.hr>
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On Mon, Jan 8, 2024 at 3:49=E2=80=AFPM Himanshu Chauhan <himanshu@thechauha=
n.dev>
wrote:
> What is the best way to call a function (like a per-cpu setup function fr=
om a driver) on remote CPUs in an SMP machine?
>
> The 'smp_rendezvous{_cpu}' functions in 'sys/smp.h' are what you are
looking for.
They are not listed in the manpages, but you can find more information
about them in 'kern/subr_smp.c'.
Bojan
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<div dir=3D"ltr"><div dir=3D"ltr">On Mon, Jan 8, 2024 at 3:49=E2=80=AFPM=C2=
=A0Himanshu Chauhan <<a href=3D"mailto:himanshu@thechauhan.dev" target=
=3D"_blank">himanshu@thechauhan.dev</a>> wrote:</div><div class=3D"gmail=
_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div dir=3D"auto"></div><pre><div dir=3D"auto">What is the best way to call=
a function (like a per-cpu setup function from a driver) on remote CPUs in=
an SMP machine?<br></div></pre></blockquote><div>The 'smp_rendezvous{_=
cpu}' functions in 'sys/smp.h' are what you are looking for. <b=
r></div><div>They are not listed in the manpages, but you can find more inf=
ormation about them in 'kern/subr_smp.c'.</div><div><br></div><div>=
Bojan<br></div></div></div>
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