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Open Source and information security mailing list archives
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Date: Tue, 2 Jan 2024 21:06:10 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>, Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>, Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>, Nick Terrell <terrelln@...com>,
Kan Liang <kan.liang@...ux.intel.com>, Andi Kleen <ak@...ux.intel.com>,
Kajol Jain <kjain@...ux.ibm.com>, Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
Huacai Chen <chenhuacai@...nel.org>, Masami Hiramatsu <mhiramat@...nel.org>,
Vincent Whitchurch <vincent.whitchurch@...s.com>, "Steinar H. Gunderson" <sesse@...gle.com>,
Liam Howlett <liam.howlett@...cle.com>, Miguel Ojeda <ojeda@...nel.org>,
Colin Ian King <colin.i.king@...il.com>, Dmitrii Dolgov <9erthalion6@...il.com>,
Yang Jihong <yangjihong1@...wei.com>, Ming Wang <wangming01@...ngson.cn>,
James Clark <james.clark@....com>, K Prateek Nayak <kprateek.nayak@....com>,
Sean Christopherson <seanjc@...gle.com>, Leo Yan <leo.yan@...aro.org>,
Ravi Bangoria <ravi.bangoria@....com>, German Gomez <german.gomez@....com>,
Changbin Du <changbin.du@...wei.com>, Paolo Bonzini <pbonzini@...hat.com>, Li Dong <lidong@...o.com>,
Sandipan Das <sandipan.das@....com>, liuwenyu <liuwenyu7@...wei.com>,
linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
Guilherme Amadio <amadio@...too.org>
Subject: [PATCH v7 00/25] maps/threads/dsos memory improvements and fixes
Modify the implementation of maps to not use an rbtree as the
container for maps, instead use a sorted array. Improve locking and
reference counting issues.
Similar to maps separate out and reimplement threads to use a hashmap
for lower memory consumption and faster look up. The fixes a
regression in memory usage where reference count checking switched to
using non-invasive tree nodes. Reduce its default size by 32 times
and improve locking discipline. Also, fix regressions where tids had
become unordered to make `perf report --tasks` and
`perf trace --summary` output easier to read.
Better encapsulate the dsos abstraction. Remove the linked list and
rbtree used for faster iteration and log(n) lookup to a sorted array
for similar performance but half the memory usage per dso. Improve
reference counting and locking discipline, adding reference count
checking to dso.
v7:
- rebase to latest perf-tools-next where 22 patches were applied by Arnaldo.
- resolve merge conflicts, in particular with fc044c53b99f ("perf
annotate-data: Add dso->data_types tree") that required more dso
accessor functions.
v6 series is here:
https://lore.kernel.org/lkml/20231207011722.1220634-1-irogers@google.com/
Ian Rogers (25):
perf maps: Switch from rbtree to lazily sorted array for addresses
perf maps: Get map before returning in maps__find
perf maps: Get map before returning in maps__find_by_name
perf maps: Get map before returning in maps__find_next_entry
perf maps: Hide maps internals
perf maps: Locking tidy up of nr_maps
perf dso: Reorder variables to save space in struct dso
perf report: Sort child tasks by tid
perf trace: Ignore thread hashing in summary
perf machine: Move fprintf to for_each loop and a callback
perf threads: Move threads to its own files
perf threads: Switch from rbtree to hashmap
perf threads: Reduce table size from 256 to 8
perf dsos: Attempt to better abstract dsos internals
perf dsos: Tidy reference counting and locking
perf dsos: Add dsos__for_each_dso
perf dso: Move dso functions out of dsos
perf dsos: Switch more loops to dsos__for_each_dso
perf dsos: Switch backing storage to array from rbtree/list
perf dsos: Remove __dsos__addnew
perf dsos: Remove __dsos__findnew_link_by_longname_id
perf dsos: Switch hand code to bsearch
perf dso: Add reference count checking and accessor functions
perf dso: Reference counting related fixes
perf dso: Use container_of to avoid a pointer in dso_data
tools/perf/arch/x86/tests/dwarf-unwind.c | 1 +
tools/perf/builtin-annotate.c | 8 +-
tools/perf/builtin-buildid-cache.c | 2 +-
tools/perf/builtin-buildid-list.c | 18 +-
tools/perf/builtin-inject.c | 96 +-
tools/perf/builtin-kallsyms.c | 2 +-
tools/perf/builtin-mem.c | 4 +-
tools/perf/builtin-record.c | 2 +-
tools/perf/builtin-report.c | 209 +--
tools/perf/builtin-script.c | 8 +-
tools/perf/builtin-top.c | 4 +-
tools/perf/builtin-trace.c | 43 +-
tools/perf/tests/code-reading.c | 8 +-
tools/perf/tests/dso-data.c | 67 +-
tools/perf/tests/hists_common.c | 6 +-
tools/perf/tests/hists_cumulate.c | 4 +-
tools/perf/tests/hists_output.c | 2 +-
tools/perf/tests/maps.c | 7 +-
tools/perf/tests/symbols.c | 2 +-
tools/perf/tests/thread-maps-share.c | 8 +-
tools/perf/tests/vmlinux-kallsyms.c | 16 +-
tools/perf/ui/browsers/annotate.c | 6 +-
tools/perf/ui/browsers/hists.c | 8 +-
tools/perf/ui/browsers/map.c | 4 +-
tools/perf/util/Build | 1 +
tools/perf/util/annotate-data.c | 6 +-
tools/perf/util/annotate.c | 45 +-
tools/perf/util/auxtrace.c | 2 +-
tools/perf/util/block-info.c | 2 +-
tools/perf/util/bpf-event.c | 9 +-
tools/perf/util/bpf_lock_contention.c | 8 +-
tools/perf/util/build-id.c | 136 +-
tools/perf/util/build-id.h | 2 -
tools/perf/util/callchain.c | 4 +-
tools/perf/util/data-convert-json.c | 2 +-
tools/perf/util/db-export.c | 6 +-
tools/perf/util/dlfilter.c | 12 +-
tools/perf/util/dso.c | 469 +++---
tools/perf/util/dso.h | 549 +++++--
tools/perf/util/dsos.c | 529 ++++---
tools/perf/util/dsos.h | 40 +-
tools/perf/util/event.c | 12 +-
tools/perf/util/header.c | 8 +-
tools/perf/util/hist.c | 4 +-
tools/perf/util/intel-pt.c | 22 +-
tools/perf/util/machine.c | 570 +++-----
tools/perf/util/machine.h | 32 +-
tools/perf/util/map.c | 73 +-
tools/perf/util/maps.c | 1280 +++++++++++------
tools/perf/util/maps.h | 65 +-
tools/perf/util/probe-event.c | 26 +-
tools/perf/util/rb_resort.h | 5 -
.../util/scripting-engines/trace-event-perl.c | 6 +-
.../scripting-engines/trace-event-python.c | 21 +-
tools/perf/util/session.c | 21 +
tools/perf/util/session.h | 2 +
tools/perf/util/sort.c | 19 +-
tools/perf/util/srcline.c | 65 +-
tools/perf/util/symbol-elf.c | 132 +-
tools/perf/util/symbol.c | 217 +--
tools/perf/util/symbol_fprintf.c | 4 +-
tools/perf/util/synthetic-events.c | 24 +-
tools/perf/util/thread.c | 8 +-
tools/perf/util/thread.h | 6 -
tools/perf/util/threads.c | 186 +++
tools/perf/util/threads.h | 35 +
tools/perf/util/unwind-libunwind-local.c | 20 +-
tools/perf/util/unwind-libunwind.c | 9 +-
tools/perf/util/vdso.c | 56 +-
69 files changed, 3127 insertions(+), 2158 deletions(-)
create mode 100644 tools/perf/util/threads.c
create mode 100644 tools/perf/util/threads.h
--
2.43.0.472.g3155946c3a-goog
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