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-rw-r--r--kernel/fork.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index bb762b4dd217..4430eb1376f2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -62,6 +62,7 @@
#include <linux/blkdev.h>
#include <linux/fs_struct.h>
#include <linux/magic.h>
+#include <linux/perf_counter.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -1096,6 +1097,10 @@ static struct task_struct *copy_process(unsigned long clone_flags,
/* Perform scheduler related setup. Assign this task to a CPU. */
sched_fork(p, clone_flags);
+ retval = perf_counter_init_task(p);
+ if (retval)
+ goto bad_fork_cleanup_policy;
+
if ((retval = audit_alloc(p)))
goto bad_fork_cleanup_policy;
/* copy all the process information */
@@ -1290,6 +1295,7 @@ bad_fork_cleanup_semundo:
bad_fork_cleanup_audit:
audit_free(p);
bad_fork_cleanup_policy:
+ perf_counter_free_task(p);
#ifdef CONFIG_NUMA
mpol_put(p->mempolicy);
bad_fork_cleanup_cgroup:
@@ -1403,6 +1409,12 @@ long do_fork(unsigned long clone_flags,
if (clone_flags & CLONE_VFORK) {
p->vfork_done = &vfork;
init_completion(&vfork);
+ } else if (!(clone_flags & CLONE_VM)) {
+ /*
+ * vfork will do an exec which will call
+ * set_task_comm()
+ */
+ perf_counter_fork(p);
}
audit_finish_fork(p);