The following commit has been merged into the perf/core branch of tip: Commit-ID: e440979faf6ac8048e1792af383df6af78dd1cb0 Gitweb: https://git.kernel.org/tip/e440979faf6ac8048e1792af383df6af78dd1cb0 Author: Jiri Olsa <jo...@kernel.org> AuthorDate: Mon, 07 Oct 2019 14:53:10 +02:00 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitterDate: Thu, 10 Oct 2019 09:40:00 -03:00
libperf: Add 'struct perf_mmap_param' Add libperf's version of mmap params 'struct perf_mmap_param' object with the basics: 'prot' and 'mask'. Encapsulate it in the current 'struct mmap_params' object. Signed-off-by: Jiri Olsa <jo...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Michael Petlan <mpet...@redhat.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-3-jo...@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/lib/include/internal/mmap.h | 5 +++++ tools/perf/util/evlist.c | 14 +++++++++----- tools/perf/util/mmap.c | 4 ++-- tools/perf/util/mmap.h | 3 ++- 4 files changed, 18 insertions(+), 8 deletions(-) diff --git a/tools/perf/lib/include/internal/mmap.h b/tools/perf/lib/include/internal/mmap.h index e25890d..b26806b 100644 --- a/tools/perf/lib/include/internal/mmap.h +++ b/tools/perf/lib/include/internal/mmap.h @@ -29,6 +29,11 @@ struct perf_mmap { char event_copy[PERF_SAMPLE_MAX_SIZE] __aligned(8); }; +struct perf_mmap_param { + int prot; + int mask; +}; + void perf_mmap__init(struct perf_mmap *map, bool overwrite); #endif /* __LIBPERF_INTERNAL_MMAP_H */ diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 6c8de08..3a19a7c 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -667,7 +667,7 @@ static int evlist__mmap_per_evsel(struct evlist *evlist, int idx, int fd; int cpu; - mp->prot = PROT_READ | PROT_WRITE; + mp->core.prot = PROT_READ | PROT_WRITE; if (evsel->core.attr.write_backward) { output = _output_overwrite; maps = evlist->overwrite_mmap; @@ -680,7 +680,7 @@ static int evlist__mmap_per_evsel(struct evlist *evlist, int idx, if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY) perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING); } - mp->prot &= ~PROT_WRITE; + mp->core.prot &= ~PROT_WRITE; } if (evsel->core.system_wide && thread) @@ -921,8 +921,12 @@ int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, * Its value is decided by evsel's write_backward. * So &mp should not be passed through const pointer. */ - struct mmap_params mp = { .nr_cblocks = nr_cblocks, .affinity = affinity, .flush = flush, - .comp_level = comp_level }; + struct mmap_params mp = { + .nr_cblocks = nr_cblocks, + .affinity = affinity, + .flush = flush, + .comp_level = comp_level + }; if (!evlist->mmap) evlist->mmap = evlist__alloc_mmap(evlist, false); @@ -934,7 +938,7 @@ int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, evlist->core.mmap_len = evlist__mmap_size(pages); pr_debug("mmap size %zuB\n", evlist->core.mmap_len); - mp.mask = evlist->core.mmap_len - page_size - 1; + mp.core.mask = evlist->core.mmap_len - page_size - 1; auxtrace_mmap_params__init(&mp.auxtrace_mp, evlist->core.mmap_len, auxtrace_pages, auxtrace_overwrite); diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c index a35dc57..a496ced 100644 --- a/tools/perf/util/mmap.c +++ b/tools/perf/util/mmap.c @@ -370,8 +370,8 @@ int perf_mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu) */ refcount_set(&map->core.refcnt, 2); map->core.prev = 0; - map->core.mask = mp->mask; - map->core.base = mmap(NULL, perf_mmap__mmap_len(map), mp->prot, + map->core.mask = mp->core.mask; + map->core.base = mmap(NULL, perf_mmap__mmap_len(map), mp->core.prot, MAP_SHARED, fd, 0); if (map->core.base == MAP_FAILED) { pr_debug2("failed to mmap perf event ring buffer, error %d\n", diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h index e567c1c..4ff75d8 100644 --- a/tools/perf/util/mmap.h +++ b/tools/perf/util/mmap.h @@ -37,7 +37,8 @@ struct mmap { }; struct mmap_params { - int prot, mask, nr_cblocks, affinity, flush, comp_level; + struct perf_mmap_param core; + int nr_cblocks, affinity, flush, comp_level; struct auxtrace_mmap_params auxtrace_mp; };
