Merge tag 'perf-tools-for-v7.0-1-2026-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Arnaldo Carvalho de Melo:

- Introduce 'perf sched stats'

Merge tag 'perf-tools-for-v7.0-1-2026-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Arnaldo Carvalho de Melo:

- Introduce 'perf sched stats' tool with record/report/diff workflows
using schedstat counters

- Add a faster libdw based addr2line implementation and allow selecting
it or its alternatives via 'perf config addr2line.style='

- Data-type profiling fixes and improvements including the ability to
select fields using 'perf report''s -F/-fields, e.g.:

'perf report --fields overhead,type'

- Add 'perf test' regression tests for Data-type profiling with C and
Rust workloads

- Fix srcline printing with inlines in callchains, make sure this has
coverage in 'perf test'

- Fix printing of leaf IP in LBR callchains

- Fix display of metrics without sufficient permission in 'perf stat'

- Print all machines in 'perf kvm report -vvv', not just the host

- Switch from SHA-1 to BLAKE2s for build ID generation, remove SHA-1
code

- Fix 'perf report's histogram entry collapsing with '-F' option

- Use system's cacheline size instead of a hardcoded value in 'perf
report'

- Allow filtering conversion by time range in 'perf data'

- Cover conversion to CTF using 'perf data' in 'perf test'

- Address newer glibc const-correctness (-Werror=discarded-qualifiers)
issues

- Fixes and improvements for ARM's CoreSight support, simplify ARM SPE
event config in 'perf mem', update docs for 'perf c2c' including the
ARM events it can be used with

- Build support for generating metrics from arch specific python
script, add extra AMD, Intel, ARM64 metrics using it

- Add AMD Zen 6 events and metrics

- Add JSON file with OpenHW Risc-V CVA6 hardware counters

- Add 'perf kvm' stats live testing

- Add more 'perf stat' tests to 'perf test'

- Fix segfault in `perf lock contention -b/--use-bpf`

- Fix various 'perf test' cases for s390

- Build system cleanups, bump minimum shellcheck version to 0.7.2

- Support building the capstone based annotation routines as a plugin

- Allow passing extra Clang flags via EXTRA_BPF_FLAGS

* tag 'perf-tools-for-v7.0-1-2026-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (255 commits)
perf test script: Add python script testing support
perf test script: Add perl script testing support
perf script: Allow the generated script to be a path
perf test: perf data --to-ctf testing
perf test: Test pipe mode with data conversion --to-json
perf json: Pipe mode --to-ctf support
perf json: Pipe mode --to-json support
perf check: Add libbabeltrace to the listed features
perf build: Allow passing extra Clang flags via EXTRA_BPF_FLAGS
perf test data_type_profiling.sh: Skip just the Rust tests if code_with_type workload is missing
tools build: Fix feature test for rust compiler
perf libunwind: Fix calls to thread__e_machine()
perf stat: Add no-affinity flag
perf evlist: Reduce affinity use and move into iterator, fix no affinity
perf evlist: Missing TPEBS close in evlist__close()
perf evlist: Special map propagation for tool events that read on 1 CPU
perf stat-shadow: In prepare_metric fix guard on reading NULL perf_stat_evsel
Revert "perf tool_pmu: More accurately set the cpus for tool events"
tools build: Emit dependencies file for test-rust.bin
tools build: Make test-rust.bin be removed by the 'clean' target
...

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perf powerpc: Unify the skip-callchain-idx libdw with that for addr2line

Rather than have 2 Dwfl unify the Dwfl in skip-callchain-idx with that
is used by libdw__addr2line().

Rename that variable i

perf powerpc: Unify the skip-callchain-idx libdw with that for addr2line

Rather than have 2 Dwfl unify the Dwfl in skip-callchain-idx with that
is used by libdw__addr2line().

Rename that variable in 'struct dso' from 'a2l_libdw' to just 'libdw' as
it is now used in more than addr2line.

The Dwfl in skip-callchain-idx uses a map address when being read with
dwfl_report_elf (rather than dwfl_report_offline that addr2line
uses).

skip-callchain-idx is wrong as the map address can vary between
processes because of ASLR, ie it should need a different Dwfl per
process.

In the code after this patch the base address becomes 0 and the mapped
PC is used with the dwfl functions.

This should increase the accuracy of skip-callchain-idx, but the impact
has only been build tested.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Aditya Bodkhe <aditya.b1@linux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.ibm.com>
Cc: Chun-Tse Shao <ctshao@google.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Dr. David Alan Gilbert <linux@treblig.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Haibo Xu <haibo1.xu@intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Krzysztof Łopatowski <krzysztof.m.lopatowski@gmail.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Wielaard <mark@klomp.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergei Trofimovich <slyich@gmail.com>
Cc: Shimin Guo <shimin.guo@skydio.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf addr2line: Add a libdw implementation

Add an implementation of addr2line that uses libdw.

Other addr2line implementations are slow, particularly in the case of
forking addr2line.

Add an imple

perf addr2line: Add a libdw implementation

Add an implementation of addr2line that uses libdw.

Other addr2line implementations are slow, particularly in the case of
forking addr2line.

Add an implementation that caches the libdw information in the dso and
uses it to find the file and line number information.

Inline information is supported but because cu_walk_functions_at visits
the leaf function last add a inline_list__append_tail to reverse the
lists order.

Committer testing:

# perf probe -x ~/bin/perf libdw__addr2line
Added new event:
probe_perf:libdw_addr2line (on libdw__addr2line in /home/acme/bin/perf)

You can now use it in all perf tools, such as:

perf record -e probe_perf:libdw_addr2line -aR sleep 1

#
# perf stat -e probe_perf:libdw_addr2line perf report -f --dso perf --stdio -s srcfile,srcline
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 4K of event 'cpu/cycles/Pu'
# Event count (approx.): 5535180842
#
# Overhead Source File Source:Line
# ........ ............ ...............
#
99.04% inlineloop.c inlineloop.c:21
0.46% inlineloop.c inlineloop.c:20

#
# (Tip: For tracepoint events, try: perf report -s trace_fields)
#

Performance counter stats for 'perf report -f --dso perf --stdio -s srcfile,srcline':

44 probe_perf:libdw_addr2line

0.037260744 seconds time elapsed

0.025299000 seconds user
0.011918000 seconds sys
#

Adding probes to the other addr2line implementations (llvm__addr2line,
libbfd__addr2line and cmd__addr2line) I noticed some fallbacks to the
llvm one:

Performance counter stats for 'perf report -f --dso perf --stdio -s srcfile,srcline':

44 probe_perf:libdw_addr2line
23 probe_perf:llvm_addr2line
0 probe_perf:libbfd_addr2line
0 probe_perf:cmd_addr2line

Something to investigate further, but at least we don't fallback to the
cmd based one :-)

Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Tony Jones <tonyj@suse.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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