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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 14:52:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 14:52:48 -0800
commite431f2d74e1b91e00e71e97cadcadffc4cda8a9b (patch)
treef034a1380709ffa4fb44ff4855ba9b3037eea9e3 /include/linux
parent45763bf4bc1ebdf8eb95697607e1fd042a3e1221 (diff)
parent36cf3b1363f464c40f6ce647d3ac0ae9617d5fbc (diff)
Merge tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH: "Here is the big driver core patchset for 5.1-rc1 More patches than "normal" here this merge window, due to some work in the driver core by Alexander Duyck to rework the async probe functionality to work better for a number of devices, and independant work from Rafael for the device link functionality to make it work "correctly". Also in here is: - lots of BUS_ATTR() removals, the macro is about to go away - firmware test fixups - ihex fixups and simplification - component additions (also includes i915 patches) - lots of minor coding style fixups and cleanups. All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits) driver core: platform: remove misleading err_alloc label platform: set of_node in platform_device_register_full() firmware: hardcode the debug message for -ENOENT driver core: Add missing description of new struct device_link field driver core: Fix PM-runtime for links added during consumer probe drivers/component: kerneldoc polish async: Add cmdline option to specify drivers to be async probed driver core: Fix possible supplier PM-usage counter imbalance PM-runtime: Fix __pm_runtime_set_status() race with runtime resume driver: platform: Support parsing GpioInt 0 in platform_get_irq() selftests: firmware: fix verify_reqs() return value Revert "selftests: firmware: remove use of non-standard diff -Z option" Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config" device: Fix comment for driver_data in struct device kernfs: Allocating memory for kernfs_iattrs with kmem_cache. sysfs: remove unused include of kernfs-internal.h driver core: Postpone DMA tear-down until after devres release driver core: Document limitation related to DL_FLAG_RPM_ACTIVE PM-runtime: Take suppliers into account in __pm_runtime_set_status() device.h: Add __cold to dev_<level> logging functions ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/async.h82
-rw-r--r--include/linux/component.h2
-rw-r--r--include/linux/device.h30
-rw-r--r--include/linux/ihex.h29
-rw-r--r--include/linux/platform_device.h1
-rw-r--r--include/linux/workqueue.h2
6 files changed, 119 insertions, 27 deletions
diff --git a/include/linux/async.h b/include/linux/async.h
index 6b0226bdaadc..f81d6dbffe68 100644
--- a/include/linux/async.h
+++ b/include/linux/async.h
@@ -14,6 +14,8 @@
#include <linux/types.h>
#include <linux/list.h>
+#include <linux/numa.h>
+#include <linux/device.h>
typedef u64 async_cookie_t;
typedef void (*async_func_t) (void *data, async_cookie_t cookie);
@@ -37,9 +39,83 @@ struct async_domain {
struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \
.registered = 0 }
-extern async_cookie_t async_schedule(async_func_t func, void *data);
-extern async_cookie_t async_schedule_domain(async_func_t func, void *data,
- struct async_domain *domain);
+async_cookie_t async_schedule_node(async_func_t func, void *data,
+ int node);
+async_cookie_t async_schedule_node_domain(async_func_t func, void *data,
+ int node,
+ struct async_domain *domain);
+
+/**
+ * async_schedule - schedule a function for asynchronous execution
+ * @func: function to execute asynchronously
+ * @data: data pointer to pass to the function
+ *
+ * Returns an async_cookie_t that may be used for checkpointing later.
+ * Note: This function may be called from atomic or non-atomic contexts.
+ */
+static inline async_cookie_t async_schedule(async_func_t func, void *data)
+{
+ return async_schedule_node(func, data, NUMA_NO_NODE);
+}
+
+/**
+ * async_schedule_domain - schedule a function for asynchronous execution within a certain domain
+ * @func: function to execute asynchronously
+ * @data: data pointer to pass to the function
+ * @domain: the domain
+ *
+ * Returns an async_cookie_t that may be used for checkpointing later.
+ * @domain may be used in the async_synchronize_*_domain() functions to
+ * wait within a certain synchronization domain rather than globally.
+ * Note: This function may be called from atomic or non-atomic contexts.
+ */
+static inline async_cookie_t
+async_schedule_domain(async_func_t func, void *data,
+ struct async_domain *domain)
+{
+ return async_schedule_node_domain(func, data, NUMA_NO_NODE, domain);
+}
+
+/**
+ * async_schedule_dev - A device specific version of async_schedule
+ * @func: function to execute asynchronously
+ * @dev: device argument to be passed to function
+ *
+ * Returns an async_cookie_t that may be used for checkpointing later.
+ * @dev is used as both the argument for the function and to provide NUMA
+ * context for where to run the function. By doing this we can try to
+ * provide for the best possible outcome by operating on the device on the
+ * CPUs closest to the device.
+ * Note: This function may be called from atomic or non-atomic contexts.
+ */
+static inline async_cookie_t
+async_schedule_dev(async_func_t func, struct device *dev)
+{
+ return async_schedule_node(func, dev, dev_to_node(dev));
+}
+
+/**
+ * async_schedule_dev_domain - A device specific version of async_schedule_domain
+ * @func: function to execute asynchronously
+ * @dev: device argument to be passed to function
+ * @domain: the domain
+ *
+ * Returns an async_cookie_t that may be used for checkpointing later.
+ * @dev is used as both the argument for the function and to provide NUMA
+ * context for where to run the function. By doing this we can try to
+ * provide for the best possible outcome by operating on the device on the
+ * CPUs closest to the device.
+ * @domain may be used in the async_synchronize_*_domain() functions to
+ * wait within a certain synchronization domain rather than globally.
+ * Note: This function may be called from atomic or non-atomic contexts.
+ */
+static inline async_cookie_t
+async_schedule_dev_domain(async_func_t func, struct device *dev,
+ struct async_domain *domain)
+{
+ return async_schedule_node_domain(func, dev, dev_to_node(dev), domain);
+}
+
void async_unregister_domain(struct async_domain *domain);
extern void async_synchronize_full(void);
extern void async_synchronize_full_domain(struct async_domain *domain);
diff --git a/include/linux/component.h b/include/linux/component.h
index 30bcc7e590eb..16de18f473d7 100644
--- a/include/linux/component.h
+++ b/include/linux/component.h
@@ -98,7 +98,7 @@ void component_match_add_typed(struct device *master,
int (*compare_typed)(struct device *, int, void *), void *compare_data);
/**
- * component_match_add - add a compent match
+ * component_match_add - add a component match entry
* @master: device with the aggregate driver
* @matchptr: pointer to the list of component matches
* @compare: compare function to match against all components
diff --git a/include/linux/device.h b/include/linux/device.h
index d88d2362e8c3..928e899ccbfb 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -341,6 +341,7 @@ struct device *driver_find_device(struct device_driver *drv,
struct device *start, void *data,
int (*match)(struct device *dev, void *data));
+void driver_deferred_probe_add(struct device *dev);
int driver_deferred_probe_check_state(struct device *dev);
/**
@@ -827,12 +828,14 @@ enum device_link_state {
* PM_RUNTIME: If set, the runtime PM framework will use this link.
* RPM_ACTIVE: Run pm_runtime_get_sync() on the supplier during link creation.
* AUTOREMOVE_SUPPLIER: Remove the link automatically on supplier driver unbind.
+ * AUTOPROBE_CONSUMER: Probe consumer driver automatically after supplier binds.
*/
#define DL_FLAG_STATELESS BIT(0)
#define DL_FLAG_AUTOREMOVE_CONSUMER BIT(1)
#define DL_FLAG_PM_RUNTIME BIT(2)
#define DL_FLAG_RPM_ACTIVE BIT(3)
#define DL_FLAG_AUTOREMOVE_SUPPLIER BIT(4)
+#define DL_FLAG_AUTOPROBE_CONSUMER BIT(5)
/**
* struct device_link - Device link representation.
@@ -845,6 +848,7 @@ enum device_link_state {
* @rpm_active: Whether or not the consumer device is runtime-PM-active.
* @kref: Count repeated addition of the same link.
* @rcu_head: An RCU head to use for deferred execution of SRCU callbacks.
+ * @supplier_preactivated: Supplier has been made active before consumer probe.
*/
struct device_link {
struct device *supplier;
@@ -853,11 +857,12 @@ struct device_link {
struct list_head c_node;
enum device_link_state status;
u32 flags;
- bool rpm_active;
+ refcount_t rpm_active;
struct kref kref;
#ifdef CONFIG_SRCU
struct rcu_head rcu_head;
#endif
+ bool supplier_preactivated; /* Owned by consumer probe. */
};
/**
@@ -985,7 +990,7 @@ struct device {
void *platform_data; /* Platform specific data, device
core doesn't touch it */
void *driver_data; /* Driver data, set and get with
- dev_set/get_drvdata */
+ dev_set_drvdata/dev_get_drvdata */
struct dev_links_info links;
struct dev_pm_info power;
struct dev_pm_domain *pm_domain;
@@ -1035,7 +1040,6 @@ struct device {
spinlock_t devres_lock;
struct list_head devres_head;
- struct klist_node knode_class;
struct class *class;
const struct attribute_group **groups; /* optional groups */
@@ -1392,28 +1396,28 @@ void device_link_remove(void *consumer, struct device *supplier);
#ifdef CONFIG_PRINTK
-__printf(3, 0)
+__printf(3, 0) __cold
int dev_vprintk_emit(int level, const struct device *dev,
const char *fmt, va_list args);
-__printf(3, 4)
+__printf(3, 4) __cold
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
-__printf(3, 4)
+__printf(3, 4) __cold
void dev_printk(const char *level, const struct device *dev,
const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_emerg(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_alert(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_crit(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_err(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_warn(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_notice(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
void _dev_info(const struct device *dev, const char *fmt, ...);
#else
diff --git a/include/linux/ihex.h b/include/linux/ihex.h
index 75c194391869..98cb5ce0b0a0 100644
--- a/include/linux/ihex.h
+++ b/include/linux/ihex.h
@@ -21,12 +21,24 @@ struct ihex_binrec {
uint8_t data[0];
} __attribute__((packed));
+static inline uint16_t ihex_binrec_size(const struct ihex_binrec *p)
+{
+ return be16_to_cpu(p->len) + sizeof(*p);
+}
+
/* Find the next record, taking into account the 4-byte alignment */
static inline const struct ihex_binrec *
+__ihex_next_binrec(const struct ihex_binrec *rec)
+{
+ const void *p = rec;
+
+ return p + ALIGN(ihex_binrec_size(rec), 4);
+}
+
+static inline const struct ihex_binrec *
ihex_next_binrec(const struct ihex_binrec *rec)
{
- int next = ((be16_to_cpu(rec->len) + 5) & ~3) - 2;
- rec = (void *)&rec->data[next];
+ rec = __ihex_next_binrec(rec);
return be16_to_cpu(rec->len) ? rec : NULL;
}
@@ -34,18 +46,15 @@ ihex_next_binrec(const struct ihex_binrec *rec)
/* Check that ihex_next_binrec() won't take us off the end of the image... */
static inline int ihex_validate_fw(const struct firmware *fw)
{
- const struct ihex_binrec *rec;
- size_t ofs = 0;
+ const struct ihex_binrec *end, *rec;
- while (ofs <= fw->size - sizeof(*rec)) {
- rec = (void *)&fw->data[ofs];
+ rec = (const void *)fw->data;
+ end = (const void *)&fw->data[fw->size - sizeof(*end)];
+ for (; rec <= end; rec = __ihex_next_binrec(rec)) {
/* Zero length marks end of records */
- if (!be16_to_cpu(rec->len))
+ if (rec == end && !be16_to_cpu(rec->len))
return 0;
-
- /* Point to next record... */
- ofs += (sizeof(*rec) + be16_to_cpu(rec->len) + 3) & ~3;
}
return -EINVAL;
}
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index c7c081dc6034..466a8d02e298 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -63,6 +63,7 @@ extern int platform_add_devices(struct platform_device **, int);
struct platform_device_info {
struct device *parent;
struct fwnode_handle *fwnode;
+ bool of_node_reused;
const char *name;
int id;
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index d9a1a480e920..d59525fca4d3 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -443,6 +443,8 @@ int workqueue_set_unbound_cpumask(cpumask_var_t cpumask);
extern bool queue_work_on(int cpu, struct workqueue_struct *wq,
struct work_struct *work);
+extern bool queue_work_node(int node, struct workqueue_struct *wq,
+ struct work_struct *work);
extern bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
struct delayed_work *work, unsigned long delay);
extern bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq,