| Message ID | 20181017144156.16639-1-daniel@iogearbox.net |
|---|---|
| Headers | show |
| Series | improve and fix barriers for walking perf rb | expand |
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 <acme@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
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(-)