diff mbox series

[Concept,11/23] ext4l: Add linux/hrtimer.h with timer stubs

Message ID 20260119061529.3383191-12-sjg@u-boot.org
State New
Headers
Series Reduce ext4_uboot.h by moving definitions to linux headers |

Commit Message

Simon Glass Jan. 19, 2026, 6:15 a.m. UTC 
  From: Simon Glass <simon.glass@canonical.com>

Create include/linux/hrtimer.h with high-resolution timer definitions.
This includes the hrtimer_mode enum values and schedule_hrtimeout()
stub, matching Linux kernel organisation.

These are stubs since U-Boot does not support high-resolution timers.

Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>
---

 fs/ext4l/ext4_uboot.h   |  5 ++---
 include/linux/hrtimer.h | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 3 deletions(-)
 create mode 100644 include/linux/hrtimer.h
diff mbox series

Patch

diff --git a/fs/ext4l/ext4_uboot.h b/fs/ext4l/ext4_uboot.h
index 58479ccb2fe..89d1296c18b 100644
--- a/fs/ext4l/ext4_uboot.h
+++ b/fs/ext4l/ext4_uboot.h
@@ -839,9 +839,8 @@  static inline unsigned long memweight(const void *ptr, size_t bytes)
 /* ktime functions - use linux/ktime.h */
 #include <linux/ktime.h>
 
-/* hrtimer stubs */
-#define HRTIMER_MODE_ABS		0
-#define schedule_hrtimeout(exp, mode)	({ (void)(exp); (void)(mode); 0; })
+/* hrtimer - use linux/hrtimer.h */
+#include <linux/hrtimer.h>
 
 /* write lock variants */
 #define write_trylock(lock)		({ (void)(lock); 1; })
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
new file mode 100644
index 00000000000..98178498b2d
--- /dev/null
+++ b/include/linux/hrtimer.h
@@ -0,0 +1,39 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * High-resolution timer definitions for U-Boot
+ *
+ * Based on Linux hrtimer.h - high resolution timers.
+ * U-Boot stub - high-resolution timers not supported.
+ */
+#ifndef _LINUX_HRTIMER_H
+#define _LINUX_HRTIMER_H
+
+/* High-resolution timer modes */
+enum hrtimer_mode {
+	HRTIMER_MODE_ABS	= 0x00,
+	HRTIMER_MODE_REL	= 0x01,
+	HRTIMER_MODE_PINNED	= 0x02,
+	HRTIMER_MODE_SOFT	= 0x04,
+	HRTIMER_MODE_HARD	= 0x08,
+
+	HRTIMER_MODE_ABS_PINNED = HRTIMER_MODE_ABS | HRTIMER_MODE_PINNED,
+	HRTIMER_MODE_REL_PINNED = HRTIMER_MODE_REL | HRTIMER_MODE_PINNED,
+	HRTIMER_MODE_ABS_SOFT	= HRTIMER_MODE_ABS | HRTIMER_MODE_SOFT,
+	HRTIMER_MODE_REL_SOFT	= HRTIMER_MODE_REL | HRTIMER_MODE_SOFT,
+	HRTIMER_MODE_ABS_HARD	= HRTIMER_MODE_ABS | HRTIMER_MODE_HARD,
+	HRTIMER_MODE_REL_HARD	= HRTIMER_MODE_REL | HRTIMER_MODE_HARD,
+};
+
+/**
+ * schedule_hrtimeout() - sleep until timeout with high-resolution timer
+ * @expires: timeout value (ktime_t)
+ * @mode: timer mode
+ *
+ * U-Boot stub - returns immediately.
+ *
+ * Return: 0
+ */
+#define schedule_hrtimeout(expires, mode) \
+	({ (void)(expires); (void)(mode); 0; })
+
+#endif /* _LINUX_HRTIMER_H */