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Ian Rogers ff8548172f perf evlist: Special map propagation for tool events that read on 1 CPU 
Tool events like duration_time don't need a perf_cpu_map that contains
all online CPUs.

Having such a perf_cpu_map causes overheads when iterating between
events for CPU affinity.

During parsing mark events that just read on a single CPU map index as
such, then during map propagation set up the evsel's CPUs and thereby
the evlists accordingly.

The setting cannot be done early in parsing as user CPUs are only fully
known when evlist__create_maps is called.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Dr. David Alan Gilbert <linux@treblig.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-02-10 09:33:28 -03:00
..
arch perf regs: Remove __weak attributive arch_sdt_arg_parse_op() function 2026-02-06 12:16:12 -03:00
bench perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m") 2026-01-14 17:22:50 -03:00
check-header_ignore_hunks/lib perf tools: update expected diff for lib/list_sort.c 2024-11-05 17:12:33 -08:00
dlfilters perf tools: Simplify evsel__add_modifier() 2024-10-22 09:52:11 -07:00
Documentation perf sched stats: Fixes in man page 2026-01-28 15:18:41 -03:00
include/perf perf dso: Move build_id to dso_id 2025-07-25 10:37:56 -07:00
jvmti perf tools: Use const for variables receiving str{str,r?chr}() returns 2025-12-17 09:30:37 -03:00
pmu-events perf build: Reduce pmu-events related copying and mkdirs 2026-02-06 19:11:36 -03:00
python perf ilist: Be tolerant of reading a metric on the wrong CPU 2025-12-02 16:12:49 -08:00
scripts perf script: Fix script_fetch_insn for more than just x86 2026-01-27 01:35:22 -03:00
tests perf test code_with_type.sh: Skip test if rust wasn't available at build time 2026-02-09 15:47:03 -03:00
trace tools headers: Sync linux/socket.h with kernel sources 2025-12-24 11:43:29 -08:00
ui perf disasm: Refactor arch__find and initialization of arch structs 2026-01-23 16:58:39 -03:00
util perf evlist: Special map propagation for tool events that read on 1 CPU 2026-02-10 09:33:28 -03:00
.gitignore perf jevents: Build support for generating metrics from python 2026-01-28 15:18:44 -03:00
Build perf build: Specify shellcheck should use bash 2025-06-30 09:43:06 -07:00
builtin-annotate.c perf tool: Add the perf_tool argument to all callbacks 2025-11-07 13:25:05 -08:00
builtin-bench.c perf bench mem: Add mmap() workloads 2025-09-19 12:43:59 -03:00
builtin-buildid-cache.c perf symbol: Fix ENOENT case for filename__read_build_id 2025-12-17 07:30:51 -08:00
builtin-buildid-list.c perf machine: Explicitly pass in host perf_env 2025-07-25 10:37:57 -07:00
builtin-c2c.c perf c2c: Clean up some defensive gets and make asan clean 2025-12-03 11:07:46 -08:00
builtin-check.c tools build: Add a feature test for rust compiler 2026-02-08 11:30:45 -03:00
builtin-config.c perf config: Add a function to set one variable in .perfconfig 2025-01-14 15:05:56 -03:00
builtin-daemon.c perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m") 2026-01-14 17:22:50 -03:00
builtin-data.c perf data: Allow filtering conversion by time range 2026-01-06 19:20:02 -03:00
builtin-diff.c perf diff: Constify strchr() return variables 2025-12-17 09:30:37 -03:00
builtin-evlist.c perf tool: Add the perf_tool argument to all callbacks 2025-11-07 13:25:05 -08:00
builtin-ftrace.c perf: ftrace: add graph tracer options args/retval/retval-hex/retaddr 2025-07-22 17:47:22 -07:00
builtin-help.c perf help: Move common_cmds into builtin-help 2026-01-14 17:22:50 -03:00
builtin-inject.c perf inject: With --convert-callchain ignore the dummy event for dwarf stacks 2026-01-23 16:58:39 -03:00
builtin-kallsyms.c perf machine: Explicitly pass in host perf_env 2025-07-25 10:37:57 -07:00
builtin-kmem.c perf session: Add accessor for session->header.env 2025-07-25 10:37:56 -07:00
builtin-kvm.c perf session: Add e_flags to the e_machine helper 2026-02-03 18:01:27 -03:00
builtin-kwork.c perf tools kwork: Add missed memory allocation check and free 2025-10-02 15:30:30 -03:00
builtin-list.c Merge remote-tracking branch 'torvalds/master' into perf-tools-next 2026-01-26 17:03:53 -03:00
builtin-lock.c perf lock: Fix segfault due to missing kernel map 2025-11-13 17:17:41 -03:00
builtin-mem.c perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies 2025-11-13 23:03:11 -08:00
builtin-probe.c perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m") 2026-01-14 17:22:50 -03:00
builtin-record.c perf record: Make logs more readable for event open failures 2026-02-06 11:53:10 -03:00
builtin-report.c perf session: Add e_flags to the e_machine helper 2026-02-03 18:01:27 -03:00
builtin-sched.c perf sched stats: Define macro for SEP_LEN 2026-01-28 15:18:39 -03:00
builtin-script.c perf session: Add e_flags to the e_machine helper 2026-02-03 18:01:27 -03:00
builtin-stat.c perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m") 2026-01-14 17:22:50 -03:00
builtin-timechart.c perf timechart: Add record support for output perf.data path 2025-12-03 11:07:23 -08:00
builtin-top.c perf top: Use evlist__new_default when no events specified 2025-10-15 23:59:11 +09:00
builtin-trace.c perf thread: Add optional e_flags output argument to thread__e_machine 2026-01-26 18:21:20 -03:00
builtin-version.c perf check: Share the feature status printing routine with 'perf version' 2025-04-10 10:44:04 -03:00
builtin.h perf check: Allow showing a tip for opt-in features not built into perf 2025-04-10 10:44:42 -03:00
check-headers.sh tools headers: Don't check arm64's unistd.h 2026-01-26 17:09:31 -03:00
CREDITS
design.txt
Makefile perf tools: Fix wrong message when running "make JOBS=1" 2024-08-01 12:11:33 -03:00
Makefile.config tools build: Fix rust feature detection 2026-02-09 11:10:56 -03:00
Makefile.perf perf test workload: Add code_with_type test workload 2026-02-08 19:16:24 -03:00
MANIFEST perf tools: Fix arm64 source package build 2025-05-13 17:26:35 -03:00
perf-archive.sh tools/perf: Add --exclude-buildids option to perf archive command 2025-06-26 15:40:19 -07:00
perf-completion.sh
perf-iostat.sh
perf-read-vdso.c
perf-sys.h
perf.c perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m") 2026-01-14 17:22:50 -03:00
perf.h perf: Completely remove possibility to override MAX_NR_CPUS 2025-09-12 10:52:22 -03:00