netdev - [PATCH bpf-next 0/3] improve and fix barriers for walking perf rb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20181017144156.16639-1-daniel@iogearbox.net>
Date:   Wed, 17 Oct 2018 16:41:53 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     alexei.starovoitov@...il.com
Cc:     peterz@...radead.org, paulmck@...ux.vnet.ibm.com,
        will.deacon@....com, acme@...hat.com, yhs@...com,
        john.fastabend@...il.com, netdev@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>
Subject: [PATCH bpf-next 0/3] improve and fix barriers for walking perf rb

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.

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