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Groups > linux.kernel > #1626555
| From | "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 tip/core/rcu 31/40] srcu: Allow a second bit in rcu_seq for SRCU state |
| Date | 2017-04-19 19:00 +0200 |
| Message-ID | <ty17s-5PA-35@gated-at.bofh.it> (permalink) |
| References | <ty17r-5PA-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This commit increases the number of reserved bits at the bottom of an rcu_seq grace-period counter from one to two, as will be needed to accommodate SRCU's three-state grace periods. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> --- kernel/rcu/rcu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index c62df93bfc1b..87a0ac95b551 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -61,7 +61,7 @@ * Grace-period counter management. */ -#define RCU_SEQ_CTR_SHIFT 1 +#define RCU_SEQ_CTR_SHIFT 2 #define RCU_SEQ_STATE_MASK ((1 << RCU_SEQ_CTR_SHIFT) - 1) /* -- 2.5.2
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[PATCH v3 tip/core/rcu 31/40] srcu: Allow a second bit in rcu_seq for SRCU state "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-19 19:00 +0200
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