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libperf: Introduce perf_evlist__mmap_ops() 

To be able to pass specific callbacks to evlist's mmap.

There will be a specific call to this function from perf's
evlist__mmap() and libperf's perf_evlist__mmap() functions in following
changes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191007125344.14268-15-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
This commit is contained in:
Jiri Olsa 2019-10-07 14:53:22 +02:00 committed by Arnaldo Carvalho de Melo
parent d1a177595b
commit 0b5ea10d4c
2 changed files with 26 additions and 6 deletions
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24
tools/perf/lib/evlist.c
View File

@ -472,12 +472,16 @@ mmap_per_cpu(struct perf_evlist *evlist, struct perf_mmap_param *mp)
return -1;
}
int perf_evlist__mmap(struct perf_evlist *evlist, int pages)
int perf_evlist__mmap_ops(struct perf_evlist *evlist,
struct perf_evlist_mmap_ops *ops,
struct perf_mmap_param *mp)
{
struct perf_evsel *evsel;
const struct perf_cpu_map *cpus = evlist->cpus;
const struct perf_thread_map *threads = evlist->threads;
struct perf_mmap_param mp;
if (!ops)
return -EINVAL;
if (!evlist->mmap)
evlist->mmap = perf_evlist__alloc_mmap(evlist, false);
@ -491,13 +495,21 @@ int perf_evlist__mmap(struct perf_evlist *evlist, int pages)
return -ENOMEM;
}
if (perf_cpu_map__empty(cpus))
return mmap_per_thread(evlist, mp);
return mmap_per_cpu(evlist, mp);
}
int perf_evlist__mmap(struct perf_evlist *evlist, int pages)
{
struct perf_mmap_param mp;
struct perf_evlist_mmap_ops ops;
evlist->mmap_len = (pages + 1) * page_size;
mp.mask = evlist->mmap_len - page_size - 1;
if (perf_cpu_map__empty(cpus))
return mmap_per_thread(evlist, &mp);
return mmap_per_cpu(evlist, &mp);
return perf_evlist__mmap_ops(evlist, &ops, &mp);
}
void perf_evlist__munmap(struct perf_evlist *evlist)

8
tools/perf/lib/include/internal/evlist.h
View File

@ -11,6 +11,7 @@
struct perf_cpu_map;
struct perf_thread_map;
struct perf_mmap_param;
struct perf_evlist {
struct list_head entries;
@ -26,10 +27,17 @@ struct perf_evlist {
struct perf_mmap *mmap_ovw;
};
struct perf_evlist_mmap_ops {
};
int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
void *ptr, short revent);
int perf_evlist__mmap_ops(struct perf_evlist *evlist,
struct perf_evlist_mmap_ops *ops,
struct perf_mmap_param *mp);
/**
* __perf_evlist__for_each_entry - iterate thru all the evsels
* @list: list_head instance to iterate