Em Wed, Oct 17, 2018 at 04:41:53PM +0200, Daniel Borkmann escreveu:
> This set first adds smp_* barrier variants to tools infrastructure
> and in a second step updates perf and libbpf to make use of them.
> For details, please see individual patches, thanks!
>
> Arnaldo, if there are no objections, could this be routed via bpf-next
> with Acked-by's due to later dependencies in libbpf? Alternatively,
> I could also get the 2nd patch out during merge window, but perhaps
> it's okay to do in one go as there shouldn't be much conflict in perf.
Right, when updating kernel/events/ring_buffer.c the corresponding
code in tools/ should've been changed :-)
Acked-by: Arnaldo Carvalho de Melo <a...@redhat.com>
- Arnaldo
> Thanks!
>
> Daniel Borkmann (3):
> tools: add smp_* barrier variants to include infrastructure
> tools, perf: use smp_{rmb,mb} barriers instead of {rmb,mb}
> bpf, libbpf: use proper barriers in perf ring buffer walk
>
> tools/arch/arm64/include/asm/barrier.h | 10 ++++++++++
> tools/arch/x86/include/asm/barrier.h | 9 ++++++---
> tools/include/asm/barrier.h | 11 +++++++++++
> tools/lib/bpf/libbpf.c | 25 +++++++++++++++++++------
> tools/perf/util/mmap.h | 5 +++--
> 5 files changed, 49 insertions(+), 11 deletions(-)
>
> --
> 2.9.5
