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perf mmap: Simplify perf_mmap__read_init()

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It isn't necessary to pass the 'start', 'end' and 'overwrite' arguments
to perf_mmap__read_init().  The data is stored in the struct perf_mmap.

Discard the parameters.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1520350567-80082-8-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang
2018-03-06 10:36:07 -05:00
committed by Arnaldo Carvalho de Melo
parent 0019dc87b9
commit b9bae2c841
17 changed files with 18 additions and 40 deletions
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3
tools/perf/util/python.c
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@@ -984,7 +984,6 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
int sample_id_all = 1, cpu;
static char *kwlist[] = { "cpu", "sample_id_all", NULL };
struct perf_mmap *md;
u64 end, start;
int err;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist,
@@ -992,7 +991,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
return NULL;
md = &evlist->mmap[cpu];
if (perf_mmap__read_init(md, false, &start, &end) < 0)
if (perf_mmap__read_init(md) < 0)
goto end;
event = perf_mmap__read_event(md);