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Date: Tue, 10 Aug 2021 16:14:39 -0000
From: "tip-bot2 for Randy Dunlap" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Randy Dunlap <rdunlap@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
linux-kernel@...r.kernel.org
Subject: [tip: smp/core] cpu/hotplug: Eliminate all kernel-doc warnings
The following commit has been merged into the smp/core branch of tip:
Commit-ID: 11bc021d1fbaaa1a6e7b92d6631faa875dd40b7d
Gitweb: https://git.kernel.org/tip/11bc021d1fbaaa1a6e7b92d6631faa875dd40b7d
Author: Randy Dunlap <rdunlap@...radead.org>
AuthorDate: Mon, 09 Aug 2021 15:38:25 -07:00
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Tue, 10 Aug 2021 18:07:38 +02:00
cpu/hotplug: Eliminate all kernel-doc warnings
kernel/cpu.c:57: warning: cannot understand function prototype: 'struct cpuhp_cpu_state '
kernel/cpu.c:115: warning: cannot understand function prototype: 'struct cpuhp_step '
kernel/cpu.c:146: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* cpuhp_invoke_callback _ Invoke the callbacks for a given state
kernel/cpu.c:75: warning: Function parameter or member 'fail' not described in 'cpuhp_cpu_state'
kernel/cpu.c:75: warning: Function parameter or member 'cpu' not described in 'cpuhp_cpu_state'
kernel/cpu.c:75: warning: Function parameter or member 'node' not described in 'cpuhp_cpu_state'
kernel/cpu.c:75: warning: Function parameter or member 'last' not described in 'cpuhp_cpu_state'
kernel/cpu.c:130: warning: Function parameter or member 'list' not described in 'cpuhp_step'
kernel/cpu.c:130: warning: Function parameter or member 'multi_instance' not described in 'cpuhp_step'
kernel/cpu.c:158: warning: No description found for return value of 'cpuhp_invoke_callback'
kernel/cpu.c:1188: warning: No description found for return value of 'cpu_device_down'
kernel/cpu.c:1400: warning: No description found for return value of 'cpu_device_up'
kernel/cpu.c:1425: warning: No description found for return value of 'bringup_hibernate_cpu'
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20210809223825.24512-1-rdunlap@infradead.org
---
kernel/cpu.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 8930a4e..62fb67e 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -41,14 +41,19 @@
#include "smpboot.h"
/**
- * cpuhp_cpu_state - Per cpu hotplug state storage
+ * struct cpuhp_cpu_state - Per cpu hotplug state storage
* @state: The current cpu state
* @target: The target state
+ * @fail: Current CPU hotplug callback state
* @thread: Pointer to the hotplug thread
* @should_run: Thread should execute
* @rollback: Perform a rollback
* @single: Single callback invocation
* @bringup: Single callback bringup or teardown selector
+ * @cpu: CPU number
+ * @node: Remote CPU node; for multi-instance, do a
+ * single entry callback for install/remove
+ * @last: For multi-instance rollback, remember how far we got
* @cb_state: The state for a single callback (install/uninstall)
* @result: Result of the operation
* @done_up: Signal completion to the issuer of the task for cpu-up
@@ -106,11 +111,12 @@ static inline void cpuhp_lock_release(bool bringup) { }
#endif
/**
- * cpuhp_step - Hotplug state machine step
+ * struct cpuhp_step - Hotplug state machine step
* @name: Name of the step
* @startup: Startup function of the step
* @teardown: Teardown function of the step
* @cant_stop: Bringup/teardown can't be stopped at this step
+ * @multi_instance: State has multiple instances which get added afterwards
*/
struct cpuhp_step {
const char *name;
@@ -124,7 +130,9 @@ struct cpuhp_step {
int (*multi)(unsigned int cpu,
struct hlist_node *node);
} teardown;
+ /* private: */
struct hlist_head list;
+ /* public: */
bool cant_stop;
bool multi_instance;
};
@@ -143,7 +151,7 @@ static bool cpuhp_step_empty(bool bringup, struct cpuhp_step *step)
}
/**
- * cpuhp_invoke_callback _ Invoke the callbacks for a given state
+ * cpuhp_invoke_callback - Invoke the callbacks for a given state
* @cpu: The cpu for which the callback should be invoked
* @state: The state to do callbacks for
* @bringup: True if the bringup callback should be invoked
@@ -151,6 +159,8 @@ static bool cpuhp_step_empty(bool bringup, struct cpuhp_step *step)
* @lastp: For multi-instance rollback, remember how far we got
*
* Called from cpu hotplug and from the state register machinery.
+ *
+ * Return: %0 on success or a negative errno code
*/
static int cpuhp_invoke_callback(unsigned int cpu, enum cpuhp_state state,
bool bringup, struct hlist_node *node,
@@ -1183,6 +1193,8 @@ static int cpu_down(unsigned int cpu, enum cpuhp_state target)
* This function is meant to be used by device core cpu subsystem only.
*
* Other subsystems should use remove_cpu() instead.
+ *
+ * Return: %0 on success or a negative errno code
*/
int cpu_device_down(struct device *dev)
{
@@ -1395,6 +1407,8 @@ out:
* This function is meant to be used by device core cpu subsystem only.
*
* Other subsystems should use add_cpu() instead.
+ *
+ * Return: %0 on success or a negative errno code
*/
int cpu_device_up(struct device *dev)
{
@@ -1420,6 +1434,8 @@ EXPORT_SYMBOL_GPL(add_cpu);
* On some architectures like arm64, we can hibernate on any CPU, but on
* wake up the CPU we hibernated on might be offline as a side effect of
* using maxcpus= for example.
+ *
+ * Return: %0 on success or a negative errno code
*/
int bringup_hibernate_cpu(unsigned int sleep_cpu)
{
@@ -1985,9 +2001,9 @@ EXPORT_SYMBOL_GPL(__cpuhp_state_add_instance);
* added afterwards.
*
* The caller needs to hold cpus read locked while calling this function.
- * Returns:
+ * Return:
* On success:
- * Positive state number if @state is CPUHP_AP_ONLINE_DYN
+ * Positive state number if @state is CPUHP_AP_ONLINE_DYN;
* 0 for all other states
* On failure: proper (negative) error code
*/
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