X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=cgroup.c;h=4fab977aeb8c3ddadadf1680692d7bf5210d70dd;hp=de00d986eb05246b25e853c3af524149f1b53e22;hb=69c594d81d4067fadd70fa4909e19d615efa5f1c;hpb=599e72b74ed2c44fd846b95160c5037c16438994

diff --git a/cgroup.c b/cgroup.c
index de00d986..4fab977a 100644
--- a/cgroup.c
+++ b/cgroup.c
@@ -11,7 +11,7 @@
 #include "cgroup.h"
 #include "smalloc.h"
 
-static struct fio_mutex *lock;
+static struct fio_sem *lock;
 
 struct cgroup_member {
 	struct flist_head list;
@@ -52,14 +52,27 @@ static void add_cgroup(struct thread_data *td, const char *name,
 {
 	struct cgroup_member *cm;
 
+	if (!lock)
+		return;
+
 	cm = smalloc(sizeof(*cm));
+	if (!cm) {
+err:
+		log_err("fio: failed to allocate cgroup member\n");
+		return;
+	}
+
 	INIT_FLIST_HEAD(&cm->list);
 	cm->root = smalloc_strdup(name);
+	if (!cm->root) {
+		sfree(cm);
+		goto err;
+	}
 	if (td->o.cgroup_nodelete)
 		cm->cgroup_nodelete = 1;
-	fio_mutex_down(lock);
+	fio_sem_down(lock);
 	flist_add_tail(&cm->list, clist);
-	fio_mutex_up(lock);
+	fio_sem_up(lock);
 }
 
 void cgroup_kill(struct flist_head *clist)
@@ -67,7 +80,10 @@ void cgroup_kill(struct flist_head *clist)
 	struct flist_head *n, *tmp;
 	struct cgroup_member *cm;
 
-	fio_mutex_down(lock);
+	if (!lock)
+		return;
+
+	fio_sem_down(lock);
 
 	flist_for_each_safe(n, tmp, clist) {
 		cm = flist_entry(n, struct cgroup_member, list);
@@ -78,7 +94,7 @@ void cgroup_kill(struct flist_head *clist)
 		sfree(cm);
 	}
 
-	fio_mutex_up(lock);
+	fio_sem_up(lock);
 }
 
 static char *get_cgroup_root(struct thread_data *td, char *mnt)
@@ -99,7 +115,7 @@ static int write_int_to_file(struct thread_data *td, const char *path,
 {
 	char tmp[256];
 	FILE *f;
-	
+
 	sprintf(tmp, "%s/%s", path, filename);
 	f = fopen(tmp, "w");
 	if (!f) {
@@ -182,10 +198,12 @@ void cgroup_shutdown(struct thread_data *td, char **mnt)
 
 static void fio_init cgroup_init(void)
 {
-	lock = fio_mutex_init(1);
+	lock = fio_sem_init(FIO_SEM_UNLOCKED);
+	if (!lock)
+		log_err("fio: failed to allocate cgroup lock\n");
 }
 
 static void fio_exit cgroup_exit(void)
 {
-	fio_mutex_remove(lock);
+	fio_sem_remove(lock);
 }