| Message ID | 20201104191052.390657-1-ndesaulniers@google.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | BPF |
| Headers | show |
| Series | compiler-clang: remove version check for BPF Tracing | expand |
On Wed, Nov 04, 2020 at 11:10:51AM -0800, Nick Desaulniers wrote: > bpftrace parses the kernel headers and uses Clang under the hood. Remove > the version check when __BPF_TRACING__ is defined (as bpftrace does) so > that this tool can continue to parse kernel headers, even with older > clang sources. > > Cc: <stable@vger.kernel.org> > Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") > Reported-by: Chen Yu <yu.chen.surf@gmail.com> > Reported-by: Jarkko Sakkinen <jarkko@kernel.org> > Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> > --- Thank you, resolved my issue. Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Tested-by: Jarkko Sakkinen <jarkko@kernel.org> > include/linux/compiler-clang.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h > index dd7233c48bf3..98cff1b4b088 100644 > --- a/include/linux/compiler-clang.h > +++ b/include/linux/compiler-clang.h > @@ -8,8 +8,10 @@ > + __clang_patchlevel__) > > #if CLANG_VERSION < 100001 > +#ifndef __BPF_TRACING__ > # error Sorry, your version of Clang is too old - please use 10.0.1 or newer. > #endif > +#endif > > /* Compiler specific definitions for Clang compiler */ > > -- > 2.29.1.341.ge80a0c044ae-goog > > /Jarkko
> On Nov 4, 2020, at 12:33 PM, Jarkko Sakkinen <jarkko@kernel.org> wrote: > > On Wed, Nov 04, 2020 at 11:10:51AM -0800, Nick Desaulniers wrote: >> bpftrace parses the kernel headers and uses Clang under the hood. Remove >> the version check when __BPF_TRACING__ is defined (as bpftrace does) so >> that this tool can continue to parse kernel headers, even with older >> clang sources. >> >> Cc: <stable@vger.kernel.org> >> Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") >> Reported-by: Chen Yu <yu.chen.surf@gmail.com> >> Reported-by: Jarkko Sakkinen <jarkko@kernel.org> >> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> >> --- > > Thank you, resolved my issue. > > Acked-by: Jarkko Sakkinen <jarkko@kernel.org> > Tested-by: Jarkko Sakkinen <jarkko@kernel.org> Acked-by: Song Liu <songliubraving@fb.com>
On Wed, 4 Nov 2020 11:10:51 -0800 Nick Desaulniers <ndesaulniers@google.com> wrote: > bpftrace parses the kernel headers and uses Clang under the hood. Remove > the version check when __BPF_TRACING__ is defined (as bpftrace does) so > that this tool can continue to parse kernel headers, even with older > clang sources. > > Cc: <stable@vger.kernel.org> > Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") 1f7a44f63e6c is only in 5.10-rcX, so I shall remove the cc:stable.
On Wed, Nov 04, 2020 at 11:10:51AM -0800, Nick Desaulniers wrote: > bpftrace parses the kernel headers and uses Clang under the hood. Remove > the version check when __BPF_TRACING__ is defined (as bpftrace does) so > that this tool can continue to parse kernel headers, even with older > clang sources. > > Cc: <stable@vger.kernel.org> > Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") > Reported-by: Chen Yu <yu.chen.surf@gmail.com> > Reported-by: Jarkko Sakkinen <jarkko@kernel.org> > Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Acked-by: Nathan Chancellor <natechancellor@gmail.com> > --- > include/linux/compiler-clang.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h > index dd7233c48bf3..98cff1b4b088 100644 > --- a/include/linux/compiler-clang.h > +++ b/include/linux/compiler-clang.h > @@ -8,8 +8,10 @@ > + __clang_patchlevel__) > > #if CLANG_VERSION < 100001 > +#ifndef __BPF_TRACING__ > # error Sorry, your version of Clang is too old - please use 10.0.1 or newer. > #endif > +#endif > > /* Compiler specific definitions for Clang compiler */ > > -- > 2.29.1.341.ge80a0c044ae-goog >
On Wed, Nov 4, 2020 at 8:11 PM Nick Desaulniers <ndesaulniers@google.com> wrote: > > bpftrace parses the kernel headers and uses Clang under the hood. Remove > the version check when __BPF_TRACING__ is defined (as bpftrace does) so > that this tool can continue to parse kernel headers, even with older > clang sources. Acked-by: Miguel Ojeda <ojeda@kernel.org> Cheers, Miguel
On Wed, Nov 4, 2020 at 11:11 AM Nick Desaulniers <ndesaulniers@google.com> wrote: > > bpftrace parses the kernel headers and uses Clang under the hood. Remove > the version check when __BPF_TRACING__ is defined (as bpftrace does) so > that this tool can continue to parse kernel headers, even with older > clang sources. > > Cc: <stable@vger.kernel.org> > Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") > Reported-by: Chen Yu <yu.chen.surf@gmail.com> > Reported-by: Jarkko Sakkinen <jarkko@kernel.org> > Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> > --- > include/linux/compiler-clang.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h > index dd7233c48bf3..98cff1b4b088 100644 > --- a/include/linux/compiler-clang.h > +++ b/include/linux/compiler-clang.h > @@ -8,8 +8,10 @@ > + __clang_patchlevel__) > > #if CLANG_VERSION < 100001 > +#ifndef __BPF_TRACING__ > # error Sorry, your version of Clang is too old - please use 10.0.1 or newer. > #endif > +#endif I can take it through the bpf tree if no one objects.
On Thu, Nov 5, 2020 at 8:16 PM Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote: > > I can take it through the bpf tree if no one objects. Doesn't matter to me. You'll need to coordinate with Andrew though, since I got the email that this was picked up into -mm: >> This patch should soon appear at >> https://ozlabs.org/~akpm/mmots/broken-out/compiler-clang-remove-version-check-for-bpf-tracing.patch >> and later at >> https://ozlabs.org/~akpm/mmotm/broken-out/compiler-clang-remove-version-check-for-bpf-tracing.patch
On Fri, Nov 06, 2020 at 10:52:50AM -0800, Nick Desaulniers wrote: > On Thu, Nov 5, 2020 at 8:16 PM Alexei Starovoitov > <alexei.starovoitov@gmail.com> wrote: > > > > I can take it through the bpf tree if no one objects. > > Doesn't matter to me. You'll need to coordinate with Andrew though, > since I got the email that this was picked up into -mm: > > >> This patch should soon appear at > >> https://ozlabs.org/~akpm/mmots/broken-out/compiler-clang-remove-version-check-for-bpf-tracing.patch > >> and later at > >> https://ozlabs.org/~akpm/mmotm/broken-out/compiler-clang-remove-version-check-for-bpf-tracing.patch Thanks a lot for quick response to everyone :-) This ebpf tracing has been a great help lately with the SGX patch set. Hope I get chance to contribute to this work at some point in future. > -- > Thanks, > ~Nick Desaulniers /Jarkko
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index dd7233c48bf3..98cff1b4b088 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -8,8 +8,10 @@ + __clang_patchlevel__) #if CLANG_VERSION < 100001 +#ifndef __BPF_TRACING__ # error Sorry, your version of Clang is too old - please use 10.0.1 or newer. #endif +#endif /* Compiler specific definitions for Clang compiler */
bpftrace parses the kernel headers and uses Clang under the hood. Remove the version check when __BPF_TRACING__ is defined (as bpftrace does) so that this tool can continue to parse kernel headers, even with older clang sources. Cc: <stable@vger.kernel.org> Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1") Reported-by: Chen Yu <yu.chen.surf@gmail.com> Reported-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> --- include/linux/compiler-clang.h | 2 ++ 1 file changed, 2 insertions(+)