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perf tools: Allocate thread map_groups's dynamically

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Moving towards sharing map groups within a process threads.

Because of this we need the map groups to be dynamically allocated. No
other functional change is intended in here.

Based on a patch by Jiri Olsa, but this time _just_ making the
conversion from statically allocating thread->mg to turning it into a
pointer and instead of initializing it at thread's constructor,
introduce a constructor/destructor for the map_groups class and
call at thread creation time.

Later we will introduce the get/put methods when we move to sharing
those map_groups, when the get/put refcounting semantics will be needed.

Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1397490723-1992-3-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
This commit is contained in:
Arnaldo Carvalho de Melo
2014-03-21 17:57:01 -03:00
committed by Jiri Olsa
parent 4e85edfc3f
commit 93d5731dcb
7 changed files with 35 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
tools/perf/util/thread.c
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@@ -15,7 +15,10 @@ struct thread *thread__new(pid_t pid, pid_t tid)
struct thread *thread = zalloc(sizeof(*thread));
if (thread != NULL) {
map_groups__init(&thread->mg);
thread->mg = map_groups__new();
if (thread->mg == NULL)
goto out_free;
thread->pid_ = pid;
thread->tid = tid;
thread->ppid = -1;
@@ -37,6 +40,8 @@ struct thread *thread__new(pid_t pid, pid_t tid)
return thread;
err_thread:
map_groups__delete(thread->mg);
out_free:
free(thread);
return NULL;
}
@@ -45,7 +50,8 @@ void thread__delete(struct thread *thread)
{
struct comm *comm, *tmp;
map_groups__exit(&thread->mg);
map_groups__delete(thread->mg);
thread->mg = NULL;
list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
list_del(&comm->list);
comm__free(comm);
@@ -111,13 +117,13 @@ int thread__comm_len(struct thread *thread)
size_t thread__fprintf(struct thread *thread, FILE *fp)
{
return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
map_groups__fprintf(&thread->mg, verbose, fp);
map_groups__fprintf(thread->mg, verbose, fp);
}
void thread__insert_map(struct thread *thread, struct map *map)
{
map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
map_groups__insert(&thread->mg, map);
map_groups__fixup_overlappings(thread->mg, map, verbose, stderr);
map_groups__insert(thread->mg, map);
}
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
@@ -135,7 +141,7 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
}
for (i = 0; i < MAP__NR_TYPES; ++i)
if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
if (map_groups__clone(thread->mg, parent->mg, i) < 0)
return -ENOMEM;
thread->ppid = parent->tid;