[ARM] 4980/1: [AT91] emQbit ECB_AT91 board support

[linux-2.6-omap-h63xx.git] / ipc / sem.c

diff --git a/ipc/sem.c b/ipc/sem.c
index 7836edb0cf967f645470dfdac3239477f03bcb57..0b45a4d383c6ae662845f5e26c6bc19f25c10a22 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -87,16 +87,14 @@
 #include <asm/uaccess.h>
 #include "util.h"
 
-#define sem_ids(ns)    (*((ns)->ids[IPC_SEM_IDS]))
+#define sem_ids(ns)    ((ns)->ids[IPC_SEM_IDS])
 
 #define sem_unlock(sma)                ipc_unlock(&(sma)->sem_perm)
 #define sem_checkid(sma, semid)        ipc_checkid(&sma->sem_perm, semid)
 #define sem_buildid(id, seq)   ipc_buildid(id, seq)
 
-static struct ipc_ids init_sem_ids;
-
 static int newary(struct ipc_namespace *, struct ipc_params *);
-static void freeary(struct ipc_namespace *, struct sem_array *);
+static void freeary(struct ipc_namespace *, struct kern_ipc_perm *);
 #ifdef CONFIG_PROC_FS
 static int sysvipc_sem_proc_show(struct seq_file *s, void *it);
 #endif
@@ -118,60 +116,26 @@ static int sysvipc_sem_proc_show(struct seq_file *s, void *it);
 #define sc_semopm      sem_ctls[2]
 #define sc_semmni      sem_ctls[3]
 
-static void __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
+void sem_init_ns(struct ipc_namespace *ns)
 {
-       ns->ids[IPC_SEM_IDS] = ids;
        ns->sc_semmsl = SEMMSL;
        ns->sc_semmns = SEMMNS;
        ns->sc_semopm = SEMOPM;
        ns->sc_semmni = SEMMNI;
        ns->used_sems = 0;
-       ipc_init_ids(ids);
+       ipc_init_ids(&ns->ids[IPC_SEM_IDS]);
 }
 
 #ifdef CONFIG_IPC_NS
-int sem_init_ns(struct ipc_namespace *ns)
-{
-       struct ipc_ids *ids;
-
-       ids = kmalloc(sizeof(struct ipc_ids), GFP_KERNEL);
-       if (ids == NULL)
-               return -ENOMEM;
-
-       __sem_init_ns(ns, ids);
-       return 0;
-}
-
 void sem_exit_ns(struct ipc_namespace *ns)
 {
-       struct sem_array *sma;
-       struct kern_ipc_perm *perm;
-       int next_id;
-       int total, in_use;
-
-       down_write(&sem_ids(ns).rw_mutex);
-
-       in_use = sem_ids(ns).in_use;
-
-       for (total = 0, next_id = 0; total < in_use; next_id++) {
-               perm = idr_find(&sem_ids(ns).ipcs_idr, next_id);
-               if (perm == NULL)
-                       continue;
-               ipc_lock_by_ptr(perm);
-               sma = container_of(perm, struct sem_array, sem_perm);
-               freeary(ns, sma);
-               total++;
-       }
-       up_write(&sem_ids(ns).rw_mutex);
-
-       kfree(ns->ids[IPC_SEM_IDS]);
-       ns->ids[IPC_SEM_IDS] = NULL;
+       free_ipcs(ns, &sem_ids(ns), freeary);
 }
 #endif
 
 void __init sem_init (void)
 {
-       __sem_init_ns(&init_ipc_ns, &init_sem_ids);
+       sem_init_ns(&init_ipc_ns);
        ipc_init_proc_interface("sysvipc/sem",
                                "       key      semid perms      nsems   uid   gid  cuid  cgid      otime      ctime\n",
                                IPC_SEM_IDS, sysvipc_sem_proc_show);
@@ -560,10 +524,11 @@ static int count_semzcnt (struct sem_array * sma, ushort semnum)
  * as a writer and the spinlock for this semaphore set hold. sem_ids.rw_mutex
  * remains locked on exit.
  */
-static void freeary(struct ipc_namespace *ns, struct sem_array *sma)
+static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
 {
        struct sem_undo *un;
        struct sem_queue *q;
+       struct sem_array *sma = container_of(ipcp, struct sem_array, sem_perm);
 
        /* Invalidate the existing undo structures for this semaphore set.
         * (They will be freed without any further action in exit_sem()
@@ -944,7 +909,7 @@ static int semctl_down(struct ipc_namespace *ns, int semid, int semnum,
 
        switch(cmd){
        case IPC_RMID:
-               freeary(ns, sma);
+               freeary(ns, ipcp);
                err = 0;
                break;
        case IPC_SET: