From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH] vdso.7: update for ARM Date: Thu, 04 Jun 2015 16:49:40 +0200 Message-ID: <55706584.9010503@gmail.com> References: <1433188139-5307-1-git-send-email-nathan_lynch@mentor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1433188139-5307-1-git-send-email-nathan_lynch-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Nathan Lynch Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Mike Frysinger List-Id: linux-man@vger.kernel.org Nathan, Mike, On 06/01/2015 09:48 PM, Nathan Lynch wrote: > The 32-bit ARM architecture in Linux has gained a vDSO as of the 4.1 > release. (I was the primary author.) > > Document the symbols exported by the ARM VDSO. > > Accepted kernel submission: > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/332573.html @Nathan: Thanks for the patch. Applied. @Mike: thanks for the Ack. Cheers, Michael > Signed-off-by: Nathan Lynch > --- > man7/vdso.7 | 21 ++++++++++++++++++++- > 1 file changed, 20 insertions(+), 1 deletion(-) > > diff --git a/man7/vdso.7 b/man7/vdso.7 > index 193fadeb52f8..4df579edd401 100644 > --- a/man7/vdso.7 > +++ b/man7/vdso.7 > @@ -148,6 +148,7 @@ l l. > user ABI vDSO name > _ > aarch64 linux-vdso.so.1 > +arm linux-vdso.so.1 > ia64 linux-gate.so.1 > ppc/32 linux-vdso32.so.1 > ppc/64 linux-vdso64.so.1 > @@ -175,9 +176,27 @@ an i386 32-bit kernel or under an x86_64 64-bit kernel. > Therefore, the name of the user-space ABI should be used to determine > which of the sections below is relevant. > .SS ARM functions > +.\" See linux/arch/arm/vdso/vdso.lds.S > +.\" Commit: 8512287a8165592466cb9cb347ba94892e9c56a5 > +The table below lists the symbols exported by the vDSO. > +.if t \{\ > +.ft CW > +\} > +.TS > +l l. > +symbol version > +_ > +__vdso_gettimeofday LINUX_2.6 (exported since Linux 4.1) > +__vdso_clock_gettime LINUX_2.6 (exported since Linux 4.1) > +.TE > +.if t \{\ > +.in > +.ft P > +\} > + > .\" See linux/arch/arm/kernel/entry-armv.S > .\" See linux/Documentation/arm/kernel_user_helpers.txt > -The ARM port has a code page full of utility functions. > +Additionally, the ARM port has a code page full of utility functions. > Since it's just a raw page of code, there is no ELF information for doing > symbol lookups or versioning. > It does provide support for different versions though. > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html