[tip:perf/core] perf evlist: Always do automatic allocation of pollfd and mmap structures
From: tip-bot for Arnaldo Carvalho de Melo
Date: Mon Dec 05 2011 - 08:08:13 EST
Commit-ID: 806fb63007447622dd61d9767b4403919737e120
Gitweb: http://git.kernel.org/tip/806fb63007447622dd61d9767b4403919737e120
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 29 Nov 2011 08:05:52 -0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 29 Nov 2011 08:05:52 -0200
perf evlist: Always do automatic allocation of pollfd and mmap structures
At first tools were required to do that, but while writing the python
bindings to simplify the API I made them auto-allocate when needed.
This just makes record, stat and top use that auto allocation,
simplifying them a bit.
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-iokhcvkzzijr3keioubx8hlq@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-record.c | 6 ------
tools/perf/builtin-stat.c | 3 +--
tools/perf/builtin-top.c | 19 ++++---------------
tools/perf/util/evlist.c | 4 ++--
tools/perf/util/evlist.h | 2 --
5 files changed, 7 insertions(+), 27 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7d4fdaa..766fa0a 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -778,16 +778,10 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
usage_with_options(record_usage, record_options);
list_for_each_entry(pos, &evsel_list->entries, node) {
- if (perf_evsel__alloc_fd(pos, evsel_list->cpus->nr,
- evsel_list->threads->nr) < 0)
- goto out_free_fd;
if (perf_header__push_event(pos->attr.config, event_name(pos)))
goto out_free_fd;
}
- if (perf_evlist__alloc_pollfd(evsel_list) < 0)
- goto out_free_fd;
-
if (rec->opts.user_interval != ULLONG_MAX)
rec->opts.default_interval = rec->opts.user_interval;
if (rec->opts.user_freq != UINT_MAX)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 227befb..4356144 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1240,8 +1240,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_stat_priv(pos) < 0 ||
- perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
- perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
+ perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0)
goto out_free_fd;
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 50ff362..c3836b9 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1034,9 +1034,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
symbol_conf.use_callchain = false;
return 0;
- }
-
- else
+ } else
return -1;
/* get the min percentage */
@@ -1225,22 +1223,13 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
}
list_for_each_entry(pos, &top.evlist->entries, node) {
- if (perf_evsel__alloc_fd(pos, top.evlist->cpus->nr,
- top.evlist->threads->nr) < 0)
- goto out_free_fd;
/*
* Fill in the ones not specifically initialized via -c:
*/
- if (pos->attr.sample_period)
- continue;
-
- pos->attr.sample_period = top.default_interval;
+ if (!pos->attr.sample_period)
+ pos->attr.sample_period = top.default_interval;
}
- if (perf_evlist__alloc_pollfd(top.evlist) < 0 ||
- perf_evlist__alloc_mmap(top.evlist) < 0)
- goto out_free_fd;
-
top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
symbol_conf.priv_size = sizeof(struct annotation);
@@ -1270,7 +1259,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
}
status = __cmd_top(&top);
-out_free_fd:
+
perf_evlist__delete(top.evlist);
return status;
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index b36f26f..8b19e7a 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -275,7 +275,7 @@ void perf_evlist__enable(struct perf_evlist *evlist)
}
}
-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
+static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
{
int nfds = evlist->cpus->nr * evlist->threads->nr * evlist->nr_entries;
evlist->pollfd = malloc(sizeof(struct pollfd) * nfds);
@@ -431,7 +431,7 @@ void perf_evlist__munmap(struct perf_evlist *evlist)
evlist->mmap = NULL;
}
-int perf_evlist__alloc_mmap(struct perf_evlist *evlist)
+static int perf_evlist__alloc_mmap(struct perf_evlist *evlist)
{
evlist->nr_mmaps = evlist->cpus->nr;
if (evlist->cpus->map[0] == -1)
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index f94ed7e..8922aee 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -72,7 +72,6 @@ int perf_evlist__set_tracepoints_handlers(struct perf_evlist *evlist,
void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
int cpu, int thread, u64 id);
-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
@@ -89,7 +88,6 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
const char *argv[]);
int perf_evlist__start_workload(struct perf_evlist *evlist);
-int perf_evlist__alloc_mmap(struct perf_evlist *evlist);
int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
bool overwrite);
void perf_evlist__munmap(struct perf_evlist *evlist);
--
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