xnu-4903.231.4.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_kmsg.h

diff --git a/osfmk/ipc/ipc_kmsg.h b/osfmk/ipc/ipc_kmsg.h
index 6e11487c509a4caa229f4b758cf9e6b37afcdef4..f5598615f557d06f84f9f0aafb934a376c74f61a 100644 (file)
--- a/osfmk/ipc/ipc_kmsg.h
+++ b/osfmk/ipc/ipc_kmsg.h
@@ -92,6 +92,9 @@
  *
  *     The ikm_header.msgh_remote_port field is the destination
  *     of the message.
+ *
+ *     sync_qos and special_port_qos stores the qos for prealloced
+ *     port, this fields could be deleted once we remove ip_prealloc.
  */
 
 struct ipc_kmsg {
@@ -105,6 +108,7 @@ struct ipc_kmsg {
        mach_msg_priority_t        ikm_qos_override; /* qos override on this kmsg */
        struct ipc_importance_elem *ikm_importance;  /* inherited from */
        queue_chain_t              ikm_inheritance;  /* inherited from link */
+       struct turnstile           *ikm_turnstile;   /* send turnstile for ikm_prealloc port */
 #if MACH_FLIPC
        struct mach_node           *ikm_node;        /* Originating node - needed for ack */
 #endif
@@ -164,12 +168,17 @@ MACRO_BEGIN                                                     \
        (kmsg)->ikm_prealloc = IP_NULL;                             \
        (kmsg)->ikm_voucher = IP_NULL;                              \
        (kmsg)->ikm_importance = IIE_NULL;                          \
-       (kmsg)->ikm_qos = MACH_MSG_PRIORITY_UNSPECIFIED;            \
-       (kmsg)->ikm_qos_override = MACH_MSG_PRIORITY_UNSPECIFIED;   \
+       ikm_qos_init(kmsg);                                         \
        ikm_flipc_init(kmsg);                                       \
        assert((kmsg)->ikm_prev = (kmsg)->ikm_next = IKM_BOGUS);    \
 MACRO_END
 
+#define ikm_qos_init(kmsg)                                              \
+MACRO_BEGIN                                                             \
+        (kmsg)->ikm_qos = MACH_MSG_PRIORITY_UNSPECIFIED;                \
+        (kmsg)->ikm_qos_override = MACH_MSG_PRIORITY_UNSPECIFIED;       \
+MACRO_END
+
 #define        ikm_check_init(kmsg, size)                                      \
 MACRO_BEGIN                                                            \
        assert((kmsg)->ikm_size == (size));                             \