Changeset 700 for soft/giet_vm/giet_kernel

Timestamp:

Aug 7, 2015, 5:42:07 PM (9 years ago)

Author:

guerin

Message:

kernel: add fbf_cma release, call it on task kill

Location:

soft/giet_vm/giet_kernel

Files:

• ctx_handler.c (modified) (1 diff)
• sys_handler.c (modified) (1 diff)
• sys_handler.h (modified) (1 diff)

soft/giet_vm/giet_kernel/ctx_handler.c

@@ -60 +60 @@
         _sys_nic_release( 0 );
         psched->context[ltid][CTX_NIC_TX_ID] = -1;
+    }
+
+    // release private FBF_CMA channel if required
+    if ( psched->context[ltid][CTX_CMA_FB_ID] < NB_CMA_CHANNELS )
+    {
+        _sys_fbf_cma_release();
+        psched->context[ltid][CTX_CMA_FB_ID] = -1;
     }
 

soft/giet_vm/giet_kernel/sys_handler.c

@@ -1686 +1686 @@
 } // end sys_fbf_cma_alloc()
 
+////////////////////////
+// NOTE: not a syscall
+int _sys_fbf_cma_release()
+{
+    unsigned int channel = _get_context_slot( CTX_CMA_FB_ID );
+
+    if ( channel >= NB_CMA_CHANNELS )
+    {
+        _printf("\n[GIET_ERROR] in _sys_fbf_cma_release() : CMA channel already released\n");
+        return -1;
+    }
+
+    // stop fb
+    _sys_fbf_cma_stop();
+
+    // reset CTX_CMA_FB_ID for task
+    _set_context_slot( CTX_CMA_FB_ID, -1 );
+
+    // release CMA channel
+    _cma_channel[channel] = 0;
+
+    return 0;
+}
 
 ///////////////////////////////////////////////////

soft/giet_vm/giet_kernel/sys_handler.h

@@ -180 +180 @@
 int _sys_fbf_cma_alloc();
 
+int _sys_fbf_cma_release();
+
 int _sys_fbf_cma_init_buf(void*        buf0_vbase, 
                           void*        buf1_vbase,