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-rw-r--r--firmware/thread.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/firmware/thread.c b/firmware/thread.c
index 71656e1711..0f4273107f 100644
--- a/firmware/thread.c
+++ b/firmware/thread.c
@@ -161,6 +161,13 @@ void switch_thread(void)
* Processor-specific section
*/
+#if defined(MAX_PHYS_SECTOR_SIZE) && MEM == 64
+/* Support a special workaround object for large-sector disks */
+#define IF_NO_SKIP_YIELD(...) __VA_ARGS__
+#else
+#define IF_NO_SKIP_YIELD(...)
+#endif
+
#if defined(CPU_ARM)
/*---------------------------------------------------------------------------
* Start the thread running and terminate it if it returns
@@ -1945,8 +1952,9 @@ void switch_thread(void)
#endif
#ifdef HAVE_PRIORITY_SCHEDULING
+ IF_NO_SKIP_YIELD( if (thread->skip_count != -1) )
/* Reset the value of thread's skip count */
- thread->skip_count = 0;
+ thread->skip_count = 0;
#endif
for (;;)
@@ -2002,6 +2010,7 @@ void switch_thread(void)
* priority threads are runnable. The highest priority runnable
* thread(s) are never skipped. */
if (priority <= max ||
+ IF_NO_SKIP_YIELD( thread->skip_count == -1 || )
(diff = priority - max, ++thread->skip_count > diff*diff))
{
cores[core].running = thread;
@@ -2146,7 +2155,8 @@ unsigned int wakeup_thread(struct thread_entry **list)
if (bl == NULL)
{
/* No inheritance - just boost the thread by aging */
- thread->skip_count = thread->priority;
+ IF_NO_SKIP_YIELD( if (thread->skip_count != -1) )
+ thread->skip_count = thread->priority;
current = cores[CURRENT_CORE].running;
}
else