From f4fe11b7bf7ff6a1ccf15d7a9484f0ff7d1e92ae Mon Sep 17 00:00:00 2001 From: Alexey Budankov Date: Tue, 22 Jan 2019 20:52:03 +0300 Subject: perf record: Implement --affinity=node|cpu option Implement --affinity=node|cpu option for the record mode defaulting to system affinity mask bouncing. Signed-off-by: Alexey Budankov Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/083f5422-ece9-10dd-8305-bf59c860f10f@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-record.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools/perf/Documentation') diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 02b4aa2621e7..8f0c2be34848 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -454,6 +454,11 @@ Use control blocks in asynchronous (Posix AIO) trace writing mode (default: Asynchronous mode is supported only when linking Perf tool with libc library providing implementation for Posix AIO API. +--affinity=mode:: +Set affinity mask of trace reading thread according to the policy defined by 'mode' value: + node - thread affinity mask is set to NUMA node cpu mask of the processed mmap buffer + cpu - thread affinity mask is set to cpu of the processed mmap buffer + --all-kernel:: Configure all used events to run in kernel space. -- cgit v1.2.3