Hello Alex, On 7/28/21 10:19 PM, Alejandro Colomar wrote: > Christophe Leroy via Bugzilla: For the commit message, it would be good to have a URL for the bug. (I could not find the bug.) > [ > https://man7.org/linux/man-pages/man7/vdso.7.html > (as of today, flagged 2021-03-22) > > ppc/32 and ppc/64 sections both have the following note: > > The CLOCK_REALTIME_COARSE and CLOCK_MONOTONIC_COARSE clocks > are not supported by the __kernel_clock_getres and > __kernel_clock_gettime interfaces; the kernel falls back to > the real system call > > This note has been wrong from quite some time now, > since commit 654abc69ef2e > ("powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE") > and commit 5c929885f1bb > ("powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE") > ] > > Reported-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > Signed-off-by: Alejandro Colomar <alx.manpages@xxxxxxxxx> In cases such as this, I prefer not to drop the historical info. See below. > --- > man7/vdso.7 | 26 -------------------------- > 1 file changed, 26 deletions(-) > > diff --git a/man7/vdso.7 b/man7/vdso.7 > index ef6bef5bd..1d527c38e 100644 > --- a/man7/vdso.7 > +++ b/man7/vdso.7 > @@ -385,19 +385,6 @@ __kernel_sync_dicache_p5 LINUX_2.6.15 > .in > .ft P > \} > -.PP > -The > -.B CLOCK_REALTIME_COARSE > -and > -.B CLOCK_MONOTONIC_COARSE > -clocks are > -.I not > -supported by the > -.I __kernel_clock_getres > -and > -.I __kernel_clock_gettime > -interfaces; > -the kernel falls back to the real system call. > .SS ppc/64 functions > .\" See linux/arch/powerpc/kernel/vdso64/vdso64.lds.S > The table below lists the symbols exported by the vDSO. > @@ -423,19 +410,6 @@ __kernel_sync_dicache_p5 LINUX_2.6.15 > .in > .ft P > \} > -.PP > -The > -.B CLOCK_REALTIME_COARSE > -and > -.B CLOCK_MONOTONIC_COARSE > -clocks are > -.I not > -supported by the > -.I __kernel_clock_getres > -and > -.I __kernel_clock_gettime > -interfaces; > -the kernel falls back to the real system call. > .SS riscv functions > .\" See linux/arch/riscv/kernel/vdso/vdso.lds.S > The table below lists the symbols exported by the vDSO. I instead applied the patch below. Cheers, Michael diff --git a/man7/vdso.7 b/man7/vdso.7 index ef6bef5bd..39d6dc4ad 100644 --- a/man7/vdso.7 +++ b/man7/vdso.7 @@ -386,7 +386,9 @@ __kernel_sync_dicache_p5 LINUX_2.6.15 .ft P \} .PP -The +In kernel versions before Linux 5.6, +.\" commit 654abc69ef2e69712e6d4e8a6cb9292b97a4aa39 +the .B CLOCK_REALTIME_COARSE and .B CLOCK_MONOTONIC_COARSE @@ -424,7 +426,9 @@ __kernel_sync_dicache_p5 LINUX_2.6.15 .ft P \} .PP -The +In kernel versions before Linux 4.16, +.\" commit 5c929885f1bb4b77f85b1769c49405a0e0f154a1 +the .B CLOCK_REALTIME_COARSE and .B CLOCK_MONOTONIC_COARSE -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
