Changes in kernel/generic/src/proc/scheduler.c [ba9a150:aae365bc] in mainline

File:

• kernel/generic/src/proc/scheduler.c (modified) (2 diffs)

kernel/generic/src/proc/scheduler.c

@@ -134 +134 @@
 void scheduler_fpu_lazy_request(void)
 {
+restart:
         fpu_enable();
         irq_spinlock_lock(&CPU->lock, false);
@@ -152 +153 @@
                 fpu_context_restore(THREAD->saved_fpu_context);
         } else {
+                /* Allocate FPU context */
+                if (!THREAD->saved_fpu_context) {
+                        /* Might sleep */
+                        irq_spinlock_unlock(&THREAD->lock, false);
+                        irq_spinlock_unlock(&CPU->lock, false);
+                        THREAD->saved_fpu_context =
+                            (fpu_context_t *) slab_alloc(fpu_context_cache, 0);
+
+                        /* We may have switched CPUs during slab_alloc */
+                        goto restart;
+                }
                 fpu_init();
                 THREAD->fpu_context_exists = true;