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locking/osq_lock: Move the definition of optimistic_spin_node into osq_lock.c

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struct optimistic_spin_node is private to the implementation.
Move it into the C file to ensure nothing is accessing it.

Signed-off-by: David Laight <david.laight@aculab.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Laight 2023-12-29 20:53:49 +00:00 committed by Linus Torvalds
parent f016f7547a
commit 7c22309821
2 changed files with 7 additions and 5 deletions
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5
include/linux/osq_lock.h
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@ -6,11 +6,6 @@
* An MCS like lock especially tailored for optimistic spinning for sleeping
* lock implementations (mutex, rwsem, etc).
*/
struct optimistic_spin_node {
struct optimistic_spin_node *next, *prev;
int locked; /* 1 if lock acquired */
int cpu; /* encoded CPU # + 1 value */
};
struct optimistic_spin_queue {
/*

7
kernel/locking/osq_lock.c
View File

@ -11,6 +11,13 @@
* called from interrupt context and we have preemption disabled while
* spinning.
*/
struct optimistic_spin_node {
struct optimistic_spin_node *next, *prev;
int locked; /* 1 if lock acquired */
int cpu; /* encoded CPU # + 1 value */
};
static DEFINE_PER_CPU_SHARED_ALIGNED(struct optimistic_spin_node, osq_node);
/*