diff options
Diffstat (limited to 'drivers/core')
| -rw-r--r-- | drivers/core/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/core/devres.c | 29 |
2 files changed, 31 insertions, 1 deletions
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig index 8ae0072aa9..c82b5645cd 100644 --- a/drivers/core/Kconfig +++ b/drivers/core/Kconfig @@ -93,10 +93,11 @@ config DEVRES devm_kmalloc() to kmalloc(), etc. config DEBUG_DEVRES - bool "Managed device resources verbose debug messages" + bool "Managed device resources debugging functions" depends on DEVRES help If this option is enabled, devres debug messages are printed. + Also, a function is available to dump a list of device resources. Select this if you are having a problem with devres or want to debug resource management for a managed device. diff --git a/drivers/core/devres.c b/drivers/core/devres.c index f235c1bcfd..605295bd14 100644 --- a/drivers/core/devres.c +++ b/drivers/core/devres.c @@ -13,6 +13,8 @@ #include <linux/kernel.h> #include <linux/list.h> #include <dm/device.h> +#include <dm/root.h> +#include <dm/util.h> /** * struct devres - Bookkeeping info for managed device resource @@ -195,6 +197,33 @@ void devres_release_all(struct udevice *dev) release_nodes(dev, &dev->devres_head, false); } +#ifdef CONFIG_DEBUG_DEVRES +static void dump_resources(struct udevice *dev, int depth) +{ + struct devres *dr; + struct udevice *child; + + printf("- %s\n", dev->name); + + list_for_each_entry(dr, &dev->devres_head, entry) + printf(" %p (%lu byte) %s %s\n", dr, + (unsigned long)dr->size, dr->name, + dr->probe ? "PROBE" : "BIND"); + + list_for_each_entry(child, &dev->child_head, sibling_node) + dump_resources(child, depth + 1); +} + +void dm_dump_devres(void) +{ + struct udevice *root; + + root = dm_root(); + if (root) + dump_resources(root, 0); +} +#endif + /* * Managed kmalloc/kfree */ |
