pussuw commented on code in PR #15563:
URL: https://github.com/apache/nuttx/pull/15563#discussion_r1916606055
##########
arch/risc-v/include/irq.h:
##########
@@ -749,6 +749,34 @@ int up_this_cpu(void);
* Inline Functions
****************************************************************************/
+/****************************************************************************
+ * Schedule acceleration macros
+ ****************************************************************************/
+
+/* When thread local storage is disabled (the usual case), the TP
+ * (Thread Pointer) register is available for use as a general purpose
+ * register. We use it to store the current task's TCB pointer for quick
+ * access.
+ * Note: If you want to use TLS (CONFIG_SCHED_THREAD_LOCAL), your toolchain
+ * must be compiled with --enable-tls option to properly support
+ * thread-local storage.
+ */
+
+#ifndef CONFIG_SCHED_THREAD_LOCAL
+#define up_this_task() \
+ ({ \
+ struct tcb_s* t; \
+ __asm__ __volatile__("mv %0, tp" : "=r"(t)); \
+ t; \
+ })
+
+/* Update the current task pointer stored in TP register */
+#define up_update_task(t) \
Review Comment:
You should call this when a context switch occurs.
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