From: sashiko-bot@kernel.org
To: "Arnaldo Carvalho de Melo" <acme@kernel.org>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: [PATCH v2 01/11] perf scripts: Add a coverage harness for perf
Date: Fri, 13 Nov 2026 20:26:20 +0000 [thread overview]
Message-ID: <sashiko-outbox-213636@kernel.org> (raw)
In-Reply-To: <20261113200850.2803460-2-acme@kernel.org>
> From: Arnaldo Carvalho de Melo <acme@redhat.com>
>
> Build perf with clang source based coverage, run the complete perf test
> suite, merge the raw profiles and report line and function coverage for
> perf, optionally against a baseline. This is pahole's
> coverage/coverage.sh + coverage-diff.sh merged into one script, wired as
> 'make -C tools/perf coverage' and listed in 'make help'.
>
> Without -f the report lists the files with the most uncovered lines,
> which is where new tests should try to get more coverage; -t narrows
> the tests, -f focuses on specific files, --html writes a browsable
> report and --table/-T, also available as 'make -C tools/perf
> coverage-table', prints the last run as an ASCII table with the
> per-file line and function coverage, like pahole's coverage_table.py.
>
> [ ... ]
>
> The run above was unprivileged, so tests that need root are skipped or
> fail; the report still points at the gaps.
>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261113200850.2803460-1-acme@kernel.org?part=1
next prev parent reply other threads:[~2026-11-13 20:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-13 20:08 [PATCH v2 0/11] perf coverage: A harness for perf, and the fixes it found Arnaldo Carvalho de Melo
2026-11-13 20:08 ` [PATCH v2 01/11] perf scripts: Add a coverage harness for perf Arnaldo Carvalho de Melo
2026-11-13 20:26 ` sashiko-bot [this message]
2026-11-13 20:08 ` [PATCH v2 02/11] perf annotate-data: Resolve DW_OP_addrx global variables Arnaldo Carvalho de Melo
2026-11-13 20:31 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 03/11] perf tests: Exercise the flexible array member path Arnaldo Carvalho de Melo
2026-11-13 20:25 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 04/11] perf annotate-data: Count flexible array accesses for the whole struct Arnaldo Carvalho de Melo
2026-11-13 20:26 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 05/11] perf tests: Exercise data type resolution from a register Arnaldo Carvalho de Melo
2026-11-13 20:26 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 06/11] perf annotate: Print the stats after the annotations Arnaldo Carvalho de Melo
2026-11-13 20:24 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 07/11] perf tests: Silence the libbfd probe in build-test Arnaldo Carvalho de Melo
2026-11-13 20:18 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 08/11] perf build: Record the display-only features in FEATURE-DUMP Arnaldo Carvalho de Melo
2026-11-13 20:24 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 09/11] perf tests: Fix the Intel PT virtual LBR check Arnaldo Carvalho de Melo
2026-11-13 20:35 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 10/11] perf test: Drop samples without an IP in the dlfilter test Arnaldo Carvalho de Melo
2026-11-13 20:26 ` sashiko-bot
2026-11-13 20:08 ` [PATCH v2 11/11] perf test: Skip the LBR inline unwinding check when unsupported Arnaldo Carvalho de Melo
2026-11-13 20:26 ` sashiko-bot
2026-11-13 22:16 ` [PATCH v2 0/11] perf coverage: A harness for perf, and the fixes it found Ian Rogers
2026-11-13 23:58 ` Arnaldo Melo
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