From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752659AbcEYVfJ (ORCPT ); Wed, 25 May 2016 17:35:09 -0400 Received: from merlin.infradead.org ([205.233.59.134]:44268 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752543AbcEYVex (ORCPT ); Wed, 25 May 2016 17:34:53 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Alexander Shishkin , Alexei Starovoitov , Andi Kleen , Brendan Gregg , David Ahern , Frederic Weisbecker , He Kuang , Jiri Olsa , Linus Torvalds , Masami Hiramatsu , Milian Wolff , Namhyung Kim , Peter Zijlstra , pi3orama@163.com, Stephane Eranian , Thomas Gleixner , Vince Weaver , Wang Nan , Zefan Li , Arnaldo Carvalho de Melo Subject: [GIT PULL 00/10] perf/core improvements and fixes Date: Wed, 25 May 2016 18:34:11 -0300 Message-Id: <1464212061-7222-1-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.5.5 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Ingo, Please consider pulling, - Arnaldo The following changes since commit 275ae411e56f8f900fa364da29c4706f9af4e1f3: perf/x86/intel/rapl: Fix pmus free during cleanup (2016-05-25 10:56:43 +0200) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-20160525 for you to fetch changes up to 83e1e314baf9a1424bf2f50953ed7d50612763c4: tools: Pass arg to fdarray__filter's call back function (2016-05-25 17:27:25 -0300) ---------------------------------------------------------------- perf/core improvements and fixes: User visible/kernel ABI: - Per event callchain limit: Recently we introduced a sysctl to tune the max-stack for all events for which callchains were requested: $ sysctl kernel.perf_event_max_stack kernel.perf_event_max_stack = 127 Now this patch introduces a way to configure this per event, i.e. this becomes possible: $ perf record -e sched:*/max-stack=2/ -e block:*/max-stack=10/ -a allowing finer tuning of how much buffer space callchains use. This uses an u16 from the reserved space at the end, leaving another u16 for future use. There has been interest in even finer tuning, namely to control the max stack for kernel and userspace callchains separately. Further discussion is needed, we may for instance use the remaining u16 for that and when it is present, assume that the sample_max_stack introduced in this patch applies for the kernel, and the u16 left is used for limiting the userspace callchain. (Arnaldo Carvalho de Melo) - Fix kptr_restrict=2 related 'perf record' segfault (Wang Nan) Infrastructure; - Adopt get_main_thread from db-export.c (Andi Kleen) - More prep work for backward ring buffer support (Wang Nan) Signed-off-by: Arnaldo Carvalho de Melo ---------------------------------------------------------------- Andi Kleen (1): perf thread: Adopt get_main_thread from db-export.c Arnaldo Carvalho de Melo (2): perf core: Per event callchain limit perf tools: Per event max-stack settings Wang Nan (7): perf symbols: Check kptr_restrict for root perf record: Fix crash when kptr is restricted perf record: Robustify perf_event__synth_time_conv() perf evlist: Don't poll and mmap overwritable events perf evlist: Check 'base' pointer before checking refcnt when put a mmap perf evlist: Choose correct reading direction according to evlist->backward tools: Pass arg to fdarray__filter's call back function include/linux/perf_event.h | 2 +- include/uapi/linux/perf_event.h | 6 +++++- kernel/bpf/stackmap.c | 2 +- kernel/events/callchain.c | 14 ++++++++++++-- kernel/events/core.c | 5 ++++- tools/lib/api/fd/array.c | 5 +++-- tools/lib/api/fd/array.h | 3 ++- tools/perf/arch/x86/util/tsc.c | 2 ++ tools/perf/builtin-record.c | 9 ++++++++- tools/perf/tests/fdarray.c | 8 ++++---- tools/perf/util/callchain.h | 1 + tools/perf/util/db-export.c | 13 +------------ tools/perf/util/event.c | 2 ++ tools/perf/util/evlist.c | 43 ++++++++++++++++++++++++++++++++--------- tools/perf/util/evlist.h | 2 ++ tools/perf/util/evsel.c | 16 +++++++++++++-- tools/perf/util/evsel.h | 2 ++ tools/perf/util/parse-events.c | 8 ++++++++ tools/perf/util/parse-events.h | 1 + tools/perf/util/parse-events.l | 1 + tools/perf/util/session.c | 2 ++ tools/perf/util/symbol.c | 16 +++++++-------- tools/perf/util/thread.c | 11 +++++++++++ tools/perf/util/thread.h | 2 ++ 24 files changed, 131 insertions(+), 45 deletions(-)