Changeset 637 for trunk/kernel/syscalls/sys_get_cycle.c

Timestamp:

Jul 18, 2019, 2:06:55 PM (5 years ago)

Author:

alain

Message:

Introduce the non-standard pthread_parallel_create() system call
and re-write the <fft> and <sort> applications to improve the
intrinsic paralelism in applications.

File:

• trunk/kernel/syscalls/sys_get_cycle.c (modified) (2 diffs)

trunk/kernel/syscalls/sys_get_cycle.c

@@ -45 +45 @@
     process_t * process = this->process;
 
+#if (DEBUG_SYS_GET_CYCLE || CONFIG_INSTRUMENTATION_SYSCALLS)
+uint64_t     tm_start = hal_get_cycles();
+#endif
+
     // check buffer in user space
     error = vmm_get_vseg( process , (intptr_t)cycle , &vseg );
@@ -63 +67 @@
 
     // copy to user space
-        hal_copy_to_uspace( local_cxy, &k_cycle, cycle, sizeof(uint64_t) );
+        hal_copy_to_uspace( cycle,
+                        XPTR( local_cxy , &k_cycle ),
+                        sizeof(uint64_t) );
+
+#if (DEBUG_SYS_GET_CYCLE || CONFIG_INSTRUMENTATION_SYSCALLS)
+uint64_t     tm_end = hal_get_cycles();
+#endif
+
+#if DEBUG_SYS_GET_CYCLE
+if( DEBUG_SYS_GET_CYCLE < tm_end )
+printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
+__FUNCTION__ , process->pid, this->trdid, (uint32_t)tm_end );
+#endif
+
+#if CONFIG_INSTRUMENTATION_SYSCALLS
+hal_atomic_add( &syscalls_cumul_cost[SYS_GET_CYCLE] , tm_end - tm_start );
+hal_atomic_add( &syscalls_occurences[SYS_GET_CYCLE] , 1 );
+#endif
 
         return 0;