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From: sashiko-bot@kernel.org
To: "Ian Rogers" <irogers@google.com>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: [PATCH 04/10] perf jevents: Encapsulate big_c_string lookups behind pmu_events__get_string()
Date: Fri, 13 Nov 2026 21:12:10 +0000	[thread overview]
Message-ID: <sashiko-outbox-213693@kernel.org> (raw)
In-Reply-To: <20261113210822.3112700-5-irogers@google.com>

> Replace direct &big_c_string[offset] indexing in decompress_event(),
> decompress_metric(), and describe_metricgroup() with calls to
> pmu_events__get_string(uint32_t offset), and change compact_pmu_event
> and metricgroups offsets to uint32_t.
> 
> When generating a single file (such as empty-pmu-events.c), emit
> pmu_events__get_string() as a static inline helper indexing
> static const char big_c_string[]. When generating separate pmu-events.c
> and pmu-events-string.c files, keep big_c_string static to
> pmu-events-string.c and expose pmu_events__get_string() across the two
> generated translation units. Also add explicit POSIX standard header
> inclusions to the generated C files.
> 
> This cleanly isolates the string storage representation inside
> pmu-events-string.c so subsequent patches can replace flat byte offsets
> into big_c_string[] with block-indexed string compression (where each
> uint32_t offset encodes (block_id << 16) | sub_offset into independently
> compressed ~8 KiB blocks decompressed on demand) without changing
> pmu-events.c.
> 
> Signed-off-by: Ian Rogers <irogers@google.com>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261113210822.3112700-1-irogers@google.com?part=4


  reply	other threads:[~2026-11-13 21:12 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-13 21:08 [PATCH 00/10] perf jevents: Block-indexed string compression and default JEVENTS_ARCH=all Ian Rogers
2026-11-13 21:08 ` [PATCH 01/10] perf jevents: Store raw bytes in BigCString instead of C-escaped strings Ian Rogers
2026-11-13 21:21   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 02/10] perf jevents: Sort BigCString entries alphabetically Ian Rogers
2026-11-13 21:12   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 03/10] perf jevents: Store PMU names as string literals in struct pmu_table_entry Ian Rogers
2026-11-13 21:13   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 04/10] perf jevents: Encapsulate big_c_string lookups behind pmu_events__get_string() Ian Rogers
2026-11-13 21:12   ` sashiko-bot [this message]
2026-11-13 21:08 ` [PATCH 05/10] perf jevents: Add block-indexed string packing and --compress=zlib Ian Rogers
2026-11-13 21:16   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 06/10] perf jevents: Add --compress=lzma block compression backend Ian Rogers
2026-11-13 21:13   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 07/10] perf jevents: Add --compress=zstd " Ian Rogers
2026-11-13 21:13   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 08/10] perf build: Enable jevents string compression when available Ian Rogers
2026-11-13 21:17   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 09/10] perf tests pmu-events: Test metricgroup descriptions and concurrent lookups Ian Rogers
2026-11-13 21:20   ` sashiko-bot
2026-11-13 21:08 ` [PATCH 10/10] perf build: Default JEVENTS_ARCH to all Ian Rogers
2026-11-13 21:21   ` sashiko-bot

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