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Merge branches 'doc.2023.01.05a', 'fixes.2023.01.23a', 'kvfree.2023.01.03a', 'srcu.2023.01.03a', 'srcu-always.2023.02.02a', 'tasks.2023.01.03a', 'torture.2023.01.05a' and 'torturescript.2023.01.03a' into HEAD

Browse Source 
doc.2023.01.05a: Documentation update.
fixes.2023.01.23a: Miscellaneous fixes.
kvfree.2023.01.03a: kvfree_rcu() updates.
srcu.2023.01.03a: SRCU updates.
srcu-always.2023.02.02a: Finish making SRCU be unconditionally available.
tasks.2023.01.03a: Tasks-RCU updates.
torture.2023.01.05a: Torture-test updates.
torturescript.2023.01.03a: Torture-test scripting updates.
This commit is contained in:
Paul E. McKenney
2023-02-02 16:33:43 -08:00
parent 5e013dc17e cf7066b97e 608723c41c dafc4d1603 5634469360 a4fcfbee8f d52d3a2bf4 5a6cd56ad7
commit 8e1704b6a8
39 changed files with 1019 additions and 515 deletions
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19
include/linux/rcupdate.h
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@@ -238,6 +238,7 @@ void synchronize_rcu_tasks_rude(void);
#define rcu_note_voluntary_context_switch(t) rcu_tasks_qs(t, false)
void exit_tasks_rcu_start(void);
void exit_tasks_rcu_stop(void);
void exit_tasks_rcu_finish(void);
#else /* #ifdef CONFIG_TASKS_RCU_GENERIC */
#define rcu_tasks_classic_qs(t, preempt) do { } while (0)
@@ -246,6 +247,7 @@ void exit_tasks_rcu_finish(void);
#define call_rcu_tasks call_rcu
#define synchronize_rcu_tasks synchronize_rcu
static inline void exit_tasks_rcu_start(void) { }
static inline void exit_tasks_rcu_stop(void) { }
static inline void exit_tasks_rcu_finish(void) { }
#endif /* #else #ifdef CONFIG_TASKS_RCU_GENERIC */
@@ -374,11 +376,18 @@ static inline int debug_lockdep_rcu_enabled(void)
* RCU_LOCKDEP_WARN - emit lockdep splat if specified condition is met
* @c: condition to check
* @s: informative message
*
* This checks debug_lockdep_rcu_enabled() before checking (c) to
* prevent early boot splats due to lockdep not yet being initialized,
* and rechecks it after checking (c) to prevent false-positive splats
* due to races with lockdep being disabled. See commit 3066820034b5dd
* ("rcu: Reject RCU_LOCKDEP_WARN() false positives") for more detail.
*/
#define RCU_LOCKDEP_WARN(c, s) \
do { \
static bool __section(".data.unlikely") __warned; \
if ((c) && debug_lockdep_rcu_enabled() && !__warned) { \
if (debug_lockdep_rcu_enabled() && (c) && \
debug_lockdep_rcu_enabled() && !__warned) { \
__warned = true; \
lockdep_rcu_suspicious(__FILE__, __LINE__, s); \
} \
@@ -1004,6 +1013,9 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
#define kvfree_rcu(...) KVFREE_GET_MACRO(__VA_ARGS__, \
kvfree_rcu_arg_2, kvfree_rcu_arg_1)(__VA_ARGS__)
#define kvfree_rcu_mightsleep(ptr) kvfree_rcu_arg_1(ptr)
#define kfree_rcu_mightsleep(ptr) kvfree_rcu_mightsleep(ptr)
#define KVFREE_GET_MACRO(_1, _2, NAME, ...) NAME
#define kvfree_rcu_arg_2(ptr, rhf) \
do { \
@@ -1011,8 +1023,7 @@ do { \
\
if (___p) { \
BUILD_BUG_ON(!__is_kvfree_rcu_offset(offsetof(typeof(*(ptr)), rhf))); \
kvfree_call_rcu(&((___p)->rhf), (rcu_callback_t)(unsigned long) \
(offsetof(typeof(*(ptr)), rhf))); \
kvfree_call_rcu(&((___p)->rhf), (void *) (___p)); \
} \
} while (0)
@@ -1021,7 +1032,7 @@ do { \
typeof(ptr) ___p = (ptr); \
\
if (___p) \
kvfree_call_rcu(NULL, (rcu_callback_t) (___p)); \
kvfree_call_rcu(NULL, (void *) (___p)); \
} while (0)
/*