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Merge branches 'docs.2025.02.04a', 'lazypreempt.2025.03.04a', 'misc.2025.03.04a', 'srcu.2025.02.05a' and 'torture.2025.02.05a'

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This commit is contained in:
Boqun Feng
2025-03-04 18:47:32 -08:00
parent 73298c7cf1 8d608f0801 5a562b8b3f 3cec27453d 6be43acb2a
commit 467c890f2d
35 changed files with 654 additions and 217 deletions
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29
include/linux/srcutiny.h
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@@ -64,13 +64,38 @@ static inline int __srcu_read_lock(struct srcu_struct *ssp)
{
int idx;
preempt_disable(); // Needed for PREEMPT_AUTO
preempt_disable(); // Needed for PREEMPT_LAZY
idx = ((READ_ONCE(ssp->srcu_idx) + 1) & 0x2) >> 1;
WRITE_ONCE(ssp->srcu_lock_nesting[idx], READ_ONCE(ssp->srcu_lock_nesting[idx]) + 1);
preempt_enable();
return idx;
}
struct srcu_ctr;
static inline bool __srcu_ptr_to_ctr(struct srcu_struct *ssp, struct srcu_ctr __percpu *scpp)
{
return (int)(intptr_t)(struct srcu_ctr __force __kernel *)scpp;
}
static inline struct srcu_ctr __percpu *__srcu_ctr_to_ptr(struct srcu_struct *ssp, int idx)
{
return (struct srcu_ctr __percpu *)(intptr_t)idx;
}
static inline struct srcu_ctr __percpu *__srcu_read_lock_fast(struct srcu_struct *ssp)
{
return __srcu_ctr_to_ptr(ssp, __srcu_read_lock(ssp));
}
static inline void __srcu_read_unlock_fast(struct srcu_struct *ssp, struct srcu_ctr __percpu *scp)
{
__srcu_read_unlock(ssp, __srcu_ptr_to_ctr(ssp, scp));
}
#define __srcu_read_lock_lite __srcu_read_lock
#define __srcu_read_unlock_lite __srcu_read_unlock
static inline void synchronize_srcu_expedited(struct srcu_struct *ssp)
{
synchronize_srcu(ssp);
@@ -82,7 +107,7 @@ static inline void srcu_barrier(struct srcu_struct *ssp)
}
#define srcu_check_read_flavor(ssp, read_flavor) do { } while (0)
#define srcu_check_read_flavor_lite(ssp) do { } while (0)
#define srcu_check_read_flavor_force(ssp, read_flavor) do { } while (0)
/* Defined here to avoid size increase for non-torture kernels. */
static inline void srcu_torture_stats_print(struct srcu_struct *ssp,