diff options
author | Jiri Olsa <jolsa@kernel.org> | 2019-07-21 13:24:44 +0200 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-07-29 18:34:45 -0300 |
commit | 4b247fa7314ce48282f3da400a9ffb7f3fd3f863 (patch) | |
tree | 24382bbdf28160daa8e2278e709d7432e78b50c9 /tools/perf/lib | |
parent | 453fa03090a64c0e0a561f10dfd5e8747796949c (diff) | |
download | linux-4b247fa7314ce48282f3da400a9ffb7f3fd3f863.tar.bz2 |
libperf: Adopt xyarray class from perf
Move the xyarray class from perf to libperf, because it's going to be
used in both.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-58-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/lib')
-rw-r--r-- | tools/perf/lib/Build | 1 | ||||
-rw-r--r-- | tools/perf/lib/include/internal/xyarray.h | 35 | ||||
-rw-r--r-- | tools/perf/lib/xyarray.c | 33 |
3 files changed, 69 insertions, 0 deletions
diff --git a/tools/perf/lib/Build b/tools/perf/lib/Build index faf64db13e37..4f78ec0b4e10 100644 --- a/tools/perf/lib/Build +++ b/tools/perf/lib/Build @@ -4,6 +4,7 @@ libperf-y += threadmap.o libperf-y += evsel.o libperf-y += evlist.o libperf-y += zalloc.o +libperf-y += xyarray.o $(OUTPUT)zalloc.o: ../../lib/zalloc.c FORCE $(call rule_mkdir) diff --git a/tools/perf/lib/include/internal/xyarray.h b/tools/perf/lib/include/internal/xyarray.h new file mode 100644 index 000000000000..3bf70e4d474c --- /dev/null +++ b/tools/perf/lib/include/internal/xyarray.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LIBPERF_INTERNAL_XYARRAY_H +#define __LIBPERF_INTERNAL_XYARRAY_H + +#include <sys/types.h> + +struct xyarray { + size_t row_size; + size_t entry_size; + size_t entries; + size_t max_x; + size_t max_y; + char contents[]; +}; + +struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size); +void xyarray__delete(struct xyarray *xy); +void xyarray__reset(struct xyarray *xy); + +static inline void *xyarray__entry(struct xyarray *xy, int x, int y) +{ + return &xy->contents[x * xy->row_size + y * xy->entry_size]; +} + +static inline int xyarray__max_y(struct xyarray *xy) +{ + return xy->max_y; +} + +static inline int xyarray__max_x(struct xyarray *xy) +{ + return xy->max_x; +} + +#endif /* __LIBPERF_INTERNAL_XYARRAY_H */ diff --git a/tools/perf/lib/xyarray.c b/tools/perf/lib/xyarray.c new file mode 100644 index 000000000000..dcd901d154bb --- /dev/null +++ b/tools/perf/lib/xyarray.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <internal/xyarray.h> +#include <linux/zalloc.h> +#include <stdlib.h> +#include <string.h> + +struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size) +{ + size_t row_size = ylen * entry_size; + struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size); + + if (xy != NULL) { + xy->entry_size = entry_size; + xy->row_size = row_size; + xy->entries = xlen * ylen; + xy->max_x = xlen; + xy->max_y = ylen; + } + + return xy; +} + +void xyarray__reset(struct xyarray *xy) +{ + size_t n = xy->entries * xy->entry_size; + + memset(xy->contents, 0, n); +} + +void xyarray__delete(struct xyarray *xy) +{ + free(xy); +} |