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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-08-02 15:32:47 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-08-31 05:10:15 -0700 |
| commit | 5fe89191e43fb37e874b8e5177fb2a5c72379b06 (patch) | |
| tree | 79e8da6c41a1828c7dca12c6c3aad7704ea80ad4 /include/linux/srcutiny.h | |
| parent | de3f2671ae563d24c679dcca36c9e0ebd9564ebd (diff) | |
| download | linux-stable-5fe89191e43fb37e874b8e5177fb2a5c72379b06.tar.gz linux-stable-5fe89191e43fb37e874b8e5177fb2a5c72379b06.tar.bz2 linux-stable-5fe89191e43fb37e874b8e5177fb2a5c72379b06.zip | |
srcu: Make Tiny SRCU use full-sized grace-period counters
This commit makes Tiny SRCU use full-sized grace-period counters to
further avoid counter-wrap issues when using polled grace-period APIs.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'include/linux/srcutiny.h')
| -rw-r--r-- | include/linux/srcutiny.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h index 4fcec6f5af90..5aa5e0faf6a1 100644 --- a/include/linux/srcutiny.h +++ b/include/linux/srcutiny.h @@ -15,10 +15,10 @@ struct srcu_struct { short srcu_lock_nesting[2]; /* srcu_read_lock() nesting depth. */ - unsigned short srcu_idx; /* Current reader array element in bit 0x2. */ - unsigned short srcu_idx_max; /* Furthest future srcu_idx request. */ u8 srcu_gp_running; /* GP workqueue running? */ u8 srcu_gp_waiting; /* GP waiting for readers? */ + unsigned long srcu_idx; /* Current reader array element in bit 0x2. */ + unsigned long srcu_idx_max; /* Furthest future srcu_idx request. */ struct swait_queue_head srcu_wq; /* Last srcu_read_unlock() wakes GP. */ struct rcu_head *srcu_cb_head; /* Pending callbacks: Head. */ @@ -82,7 +82,7 @@ static inline void srcu_torture_stats_print(struct srcu_struct *ssp, int idx; idx = ((data_race(READ_ONCE(ssp->srcu_idx)) + 1) & 0x2) >> 1; - pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%hd,%hd) gp: %hu->%hu\n", + pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%hd,%hd) gp: %lu->%lu\n", tt, tf, idx, data_race(READ_ONCE(ssp->srcu_lock_nesting[!idx])), data_race(READ_ONCE(ssp->srcu_lock_nesting[idx])), |