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authorPeter Zijlstra <peterz@infradead.org>2023-05-26 13:23:48 +0300
committerPeter Zijlstra <peterz@infradead.org>2023-06-26 12:14:18 +0300
commit54da6a0924311c7cf5015533991e44fb8eb12773 (patch)
treeaf497256995d40431b9c214e7faa45639bf3d991 /include/linux/device.h
parent9a1f37ebcfe061721564042254719dc8fd5c9fa0 (diff)
downloadlinux-54da6a0924311c7cf5015533991e44fb8eb12773.tar.xz
locking: Introduce __cleanup() based infrastructure
Use __attribute__((__cleanup__(func))) to build: - simple auto-release pointers using __free() - 'classes' with constructor and destructor semantics for scope-based resource management. - lock guards based on the above classes. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230612093537.614161713%40infradead.org
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index 472dd24d4823..2b64268d776c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -30,6 +30,7 @@
#include <linux/device/bus.h>
#include <linux/device/class.h>
#include <linux/device/driver.h>
+#include <linux/cleanup.h>
#include <asm/device.h>
struct device;
@@ -899,6 +900,9 @@ void device_unregister(struct device *dev);
void device_initialize(struct device *dev);
int __must_check device_add(struct device *dev);
void device_del(struct device *dev);
+
+DEFINE_FREE(device_del, struct device *, if (_T) device_del(_T))
+
int device_for_each_child(struct device *dev, void *data,
int (*fn)(struct device *dev, void *data));
int device_for_each_child_reverse(struct device *dev, void *data,
@@ -1066,6 +1070,9 @@ extern int (*platform_notify_remove)(struct device *dev);
*/
struct device *get_device(struct device *dev);
void put_device(struct device *dev);
+
+DEFINE_FREE(put_device, struct device *, if (_T) put_device(_T))
+
bool kill_device(struct device *dev);
#ifdef CONFIG_DEVTMPFS