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 <nathan_lynch@xxxxxxxxxx> > --- > 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@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
