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Zstd streams create dictionaries that can require significant RAM, especially when there is one per-CPU. Tools like 'perf record' won't use the streams without the -z option, and so the creation of the streams is pure overhead. Switch to creating the streams on first use. Committer notes: ssize_t comes from sys/types.h, size_t from stddef.h. This worked on glibc as stdlib.h includes both, but not on musl libc. So do what 'man size_t' says and include sys/types.h and stddef.h instead of stdlib.h Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Colin Ian King <colin.i.king@gmail.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: German Gomez <german.gomez@arm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Li Dong <lidong@vivo.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/r/20231102175735.2272696-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef PERF_COMPRESS_H
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#define PERF_COMPRESS_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <sys/types.h>
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#ifdef HAVE_ZSTD_SUPPORT
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#include <zstd.h>
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#endif
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#ifdef HAVE_ZLIB_SUPPORT
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int gzip_decompress_to_file(const char *input, int output_fd);
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bool gzip_is_compressed(const char *input);
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#endif
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#ifdef HAVE_LZMA_SUPPORT
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int lzma_decompress_to_file(const char *input, int output_fd);
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bool lzma_is_compressed(const char *input);
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#endif
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struct zstd_data {
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#ifdef HAVE_ZSTD_SUPPORT
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ZSTD_CStream *cstream;
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ZSTD_DStream *dstream;
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int comp_level;
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#endif
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};
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#ifdef HAVE_ZSTD_SUPPORT
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int zstd_init(struct zstd_data *data, int level);
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int zstd_fini(struct zstd_data *data);
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ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
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void *src, size_t src_size, size_t max_record_size,
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size_t process_header(void *record, size_t increment));
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size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
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void *dst, size_t dst_size);
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#else /* !HAVE_ZSTD_SUPPORT */
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static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
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{
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return 0;
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}
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static inline int zstd_fini(struct zstd_data *data __maybe_unused)
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{
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return 0;
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}
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static inline
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ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
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void *dst __maybe_unused, size_t dst_size __maybe_unused,
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void *src __maybe_unused, size_t src_size __maybe_unused,
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size_t max_record_size __maybe_unused,
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size_t process_header(void *record, size_t increment) __maybe_unused)
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{
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return 0;
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}
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static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
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size_t src_size __maybe_unused, void *dst __maybe_unused,
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size_t dst_size __maybe_unused)
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{
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return 0;
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}
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#endif
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#endif /* PERF_COMPRESS_H */
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