Arnaldo Carvalho de Melo 7435c4069a libperf: Document code simplification case for widening struct perf_cpu ...

Add a bullet point to the libperf ABI TODO explaining the code
simplification benefit of widening struct perf_cpu.cpu from int16_t
to int: the narrow type forces defensive truncation checks at every
boundary where wider CPU indices are narrowed, and values > 32767
silently wrap to negative numbers (two's complement), bypassing
bounds validation without them.

Acked-by: Ian Rogers <irogers@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Assisted-by: Claude:claude-opus-4.6
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2026-06-10 15:23:54 -03:00

..

Documentation

perf sched stats: Add record and rawdump support

2026-01-22 12:29:28 -03:00

include

libperf: Document struct perf_cpu int16_t ABI limitation

2026-06-06 14:46:37 -03:00

tests

libperf cpumap: Replace usage of perf_cpu_map__new(NULL) with perf_cpu_map__new_online_cpus()

2023-12-12 14:55:13 -03:00

.gitignore

libperf: Add gitignore

2024-08-01 12:11:33 -03:00

Build

libperf: Change tests to single static and shared binaries

2021-07-07 11:41:58 -03:00

core.c

libperf: Move to tools/lib/perf

2020-01-06 11:46:09 -03:00

cpumap.c

libperf cpumap: Make index and nr types unsigned

2026-04-01 14:50:53 -07:00

evlist.c

perf evlist: Special map propagation for tool events that read on 1 CPU

2026-02-10 09:33:28 -03:00

evsel.c

libperf cpumap: Make index and nr types unsigned

2026-04-01 14:50:53 -07:00

internal.h

libperf: Move to tools/lib/perf

2020-01-06 11:46:09 -03:00

lib.c

libperf: Add preadn()

2022-05-23 10:11:12 -03:00

libperf.map

libperf cpumap: Remove perf_cpu_map__read()

2024-12-09 17:52:41 -03:00

libperf.pc.template

libperf: Move to tools/lib/perf

2020-01-06 11:46:09 -03:00

Makefile

libperf build: Always place libperf includes first

2026-02-03 18:01:27 -03:00

mmap.c

libperf mmap: In user mmap rdpmc avoid undefined behavior

2025-10-02 15:02:47 -03:00

threadmap.c

libperf threadmap: Add perf_thread_map__idx()

2025-05-21 15:07:13 -03:00

TODO

libperf: Document code simplification case for widening struct perf_cpu

2026-06-10 15:23:54 -03:00

xyarray.c

libperf: Move to tools/lib/perf

2020-01-06 11:46:09 -03:00