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Message-Id: <20230110152447.5611-1-jiasheng@iscas.ac.cn>
Date: Tue, 10 Jan 2023 23:24:47 +0800
From: Jiasheng Jiang <jiasheng@...as.ac.cn>
To: maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
tzimmermann@...e.de, airlied@...il.com, daniel@...ll.ch
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH 1/2] drm: Add DRM-managed alloc_workqueue() and alloc_ordered_workqueue()
Add drmm_alloc_workqueue() and drmm_alloc_ordered_workqueue(), the helpers
that provide managed workqueue cleanup. The workqueue will be destroyed
with the final reference of the DRM device.
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
drivers/gpu/drm/drm_managed.c | 66 +++++++++++++++++++++++++++++++++++
include/drm/drm_managed.h | 8 +++++
2 files changed, 74 insertions(+)
diff --git a/drivers/gpu/drm/drm_managed.c b/drivers/gpu/drm/drm_managed.c
index 4cf214de50c4..d3bd6247eec9 100644
--- a/drivers/gpu/drm/drm_managed.c
+++ b/drivers/gpu/drm/drm_managed.c
@@ -271,6 +271,13 @@ static void drmm_mutex_release(struct drm_device *dev, void *res)
mutex_destroy(lock);
}
+static void drmm_destroy_workqueue(struct drm_device *dev, void *res)
+{
+ struct workqueue_struct *wq = res;
+
+ destroy_workqueue(wq);
+}
+
/**
* drmm_mutex_init - &drm_device-managed mutex_init()
* @dev: DRM device
@@ -289,3 +296,62 @@ int drmm_mutex_init(struct drm_device *dev, struct mutex *lock)
return drmm_add_action_or_reset(dev, drmm_mutex_release, lock);
}
EXPORT_SYMBOL(drmm_mutex_init);
+
+/**
+ * drmm_alloc_workqueue - &drm_device-managed alloc_workqueue()
+ * @dev: DRM device
+ * @wq: workqueue to be allocated
+ *
+ * Returns:
+ * 0 on success, or a negative errno code otherwise.
+ *
+ * This is a &drm_device-managed version of alloc_workqueue().
+ * The initialized lock is automatically destroyed on the final
+ * drm_dev_put().
+ */
+int drmm_alloc_workqueue(struct drm_device *dev,
+ struct workqueue_struct *wq, const char *fmt,
+ unsigned int flags, int max_active, ...)
+{
+ va_list args;
+
+ va_start(args, max_active);
+ wq = alloc_workqueue(fmt, flags, max_active, args);
+ va_end(args);
+
+ if (!wq)
+ return -ENOMEM;
+
+ return drmm_add_action_or_reset(dev, drmm_destroy_workqueue, wq);
+}
+EXPORT_SYMBOL(drmm_alloc_workqueue);
+
+/**
+ * drmm_alloc_ordered_workqueue - &drm_device-managed
+ * alloc_ordered_workqueue()
+ * @dev: DRM device
+ * @wq: workqueue to be allocated
+ *
+ * Returns:
+ * 0 on success, or a negative errno code otherwise.
+ *
+ * This is a &drm_device-managed version of alloc_ordered_workqueue().
+ * The initialized lock is automatically destroyed on the final
+ * drm_dev_put().
+ */
+int drmm_alloc_ordered_workqueue(struct drm_device *dev,
+ struct workqueue_struct *wq,
+ const char *fmt, unsigned int flags, ...)
+{
+ va_list args;
+
+ va_start(args, flags);
+ wq = alloc_ordered_workqueue(fmt, flags, args);
+ va_end(args);
+
+ if (!wq)
+ return -ENOMEM;
+
+ return drmm_add_action_or_reset(dev, drmm_destroy_workqueue, wq);
+}
+EXPORT_SYMBOL(drmm_alloc_ordered_workqueue);
diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h
index 359883942612..68cecc14e1af 100644
--- a/include/drm/drm_managed.h
+++ b/include/drm/drm_managed.h
@@ -107,4 +107,12 @@ void drmm_kfree(struct drm_device *dev, void *data);
int drmm_mutex_init(struct drm_device *dev, struct mutex *lock);
+int drmm_alloc_workqueue(struct drm_device *dev,
+ struct workqueue_struct *wq, const char *fmt,
+ unsigned int flags, int max_active, ...);
+
+int drmm_alloc_ordered_workqueue(struct drm_device *dev,
+ struct workqueue_struct *wq,
+ const char *fmt, unsigned int flags, ...);
+
#endif
--
2.25.1
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