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Wed, 14 Oct 2026 10:34:18 -0700 (PDT) Received: from localhost ([2a00:1358:e0ce:6800::3db]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48de7273a0esm8994724f8f.29.2026.10.14.10.34.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 10:34:18 -0700 (PDT) From: Ivan Shapovalov Date: Wed, 14 Oct 2026 20:34:07 +0300 Subject: [PATCH 1/4] perf: zstd: zstd_decompress_stream -> zstd_decompress_buffer Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261014-perf-zstd-v1-1-9652727886fa@intelfx.name> References: <20261014-perf-zstd-v1-0-9652727886fa@intelfx.name> In-Reply-To: <20261014-perf-zstd-v1-0-9652727886fa@intelfx.name> To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Nick Terrell , David Sterba Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Ivan Shapovalov X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2632; i=intelfx@intelfx.name; h=from:subject:message-id; bh=UmwoUy2RLKROTQa9nLKvk2PAEQc/mPogh9co6DXStm4=; b=LS0tLS1CRUdJTiBQR1AgTUVTU0FHRS0tLS0tCgpvd0did012TXdDVVdHM2x2aGVTbFF6Mk1wO VdTR0xMTzd4Vks4STdSL0x4K3dtb2Uxc2Q4M3B5WE0rZEwvRGxWCituaU4ySlU3dWVVaE4rVjNk NVN5TUloeE1jaUtLYkxzdmo4dDdOSGNDVXFIUERma3dzeGhaUUlad3NERktRQVQKcVhuSHlMREp vVm5lKzMvc2Y2WW5iUWFTN0wrZXFmSHVjVFRmWEJjWG1mUlFlT24xMTlLTURITmlNK1AwUGh4VQ pPNmkxVitUM1ZCYXJTS0c2d20vWGY5NytlUHJVcm03alNRd0EKPUlOQ0sKLS0tLS1FTkQgUEdQI E1FU1NBR0UtLS0tLQo= X-Developer-Key: i=intelfx@intelfx.name; a=openpgp; fpr=04DEA27EEF682F17083D892295D5D5F5A5A5E5E5 Existing zstd_decompress_stream() function is a misnomer. Rename that to zstd_decompress_buffer() to free the name for a future _actual_ streaming decompression function. Signed-off-by: Ivan Shapovalov --- tools/perf/util/compress.h | 4 ++-- tools/perf/util/tool.c | 2 +- tools/perf/util/zstd.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/compress.h b/tools/perf/util/compress.h index ec6c38129e248..e7aa89d31fc6f 100644 --- a/tools/perf/util/compress.h +++ b/tools/perf/util/compress.h @@ -57,7 +57,7 @@ ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_ ssize_t process_header(void *record, size_t dst_size, size_t data_size)); -size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size, +size_t zstd_decompress_buffer(struct zstd_data *data, void *src, size_t src_size, void *dst, size_t dst_size); #else /* !HAVE_ZSTD_SUPPORT */ @@ -82,7 +82,7 @@ ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused, return 0; } -static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused, +static inline size_t zstd_decompress_buffer(struct zstd_data *data __maybe_unused, void *src __maybe_unused, size_t src_size __maybe_unused, void *dst __maybe_unused, size_t dst_size __maybe_unused) { diff --git a/tools/perf/util/tool.c b/tools/perf/util/tool.c index 25c9b378aa163..d7956cd75c26d 100644 --- a/tools/perf/util/tool.c +++ b/tools/perf/util/tool.c @@ -101,7 +101,7 @@ static int perf_session__process_compressed_event(const struct perf_tool *tool _ goto err_decomp; } - decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size, + decomp_size = zstd_decompress_buffer(session->active_decomp->zstd_decomp, src, src_size, &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem); if (!decomp_size) { munmap(decomp, mmap_len); diff --git a/tools/perf/util/zstd.c b/tools/perf/util/zstd.c index d98014902f012..af113660d1ce0 100644 --- a/tools/perf/util/zstd.c +++ b/tools/perf/util/zstd.c @@ -104,7 +104,7 @@ ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_ return -1; } -size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size, +size_t zstd_decompress_buffer(struct zstd_data *data, void *src, size_t src_size, void *dst, size_t dst_size) { size_t ret; -- 2.55.0.8.g37e2a0019f