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| author |   Alexey Budankov <alexey.budankov@linux.intel.com> | 2018-11-06 12:03:35 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-17 14:55:01 -0300 |
| commit | 0b77383134f3dbb461189a9c4f3b46b20152045d (patch) | |
| tree | 7feb64c63da57d61415e61308e6ff122586e550e /tools/perf/util/mmap.h | |
| parent | tools build feature: Check if libaio is available (diff) | |
| download | linux-dev-0b77383134f3dbb461189a9c4f3b46b20152045d.tar.xz linux-dev-0b77383134f3dbb461189a9c4f3b46b20152045d.zip | |
perf mmap: Map data buffer for preserving collected data
The map->data buffer is used to preserve map->base profiling data for
writing to disk. AIO map->cblock is used to queue corresponding
map->data buffer for asynchronous writing.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5fcda10c-6c63-68df-383a-c6d9e5d1f918@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/mmap.h')
| -rw-r--r-- | tools/perf/util/mmap.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h index cc5e2d6d17a9..3f10ad030c5e 100644 --- a/tools/perf/util/mmap.h +++ b/tools/perf/util/mmap.h @@ -6,6 +6,9 @@ #include <linux/types.h> #include <linux/ring_buffer.h> #include <stdbool.h> +#ifdef HAVE_AIO_SUPPORT +#include <aio.h> +#endif #include "auxtrace.h" #include "event.h" @@ -26,6 +29,12 @@ struct perf_mmap { bool overwrite; struct auxtrace_mmap auxtrace_mmap; char event_copy[PERF_SAMPLE_MAX_SIZE] __aligned(8); +#ifdef HAVE_AIO_SUPPORT + struct { + void *data; + struct aiocb cblock; + } aio; +#endif }; /* @@ -57,7 +66,7 @@ enum bkw_mmap_state { }; struct mmap_params { - int prot, mask; + int prot, mask, nr_cblocks; struct auxtrace_mmap_params auxtrace_mp; }; |