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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-10-03 23:43:40 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-11-27 17:42:03 +0100 |
| commit | 51a1fd30f13090be7750fed86cf3728afaf4e394 (patch) | |
| tree | 346dbd94f1ec39ed399403112a12698e33ee1dc3 /kernel/rcu/tree.h | |
| parent | rcu: Define rcu_irq_{enter,exit}() in terms of rcu_nmi_{enter,exit}() (diff) | |
| download | linux-51a1fd30f13090be7750fed86cf3728afaf4e394.tar.xz linux-51a1fd30f13090be7750fed86cf3728afaf4e394.zip | |
rcu: Make ->dynticks_nesting be a simple counter
Now that ->dynticks_nesting counts only process-level dyntick-idle
entry and exit, there is no need for the elaborate segmented counter
with its guard fields and overflow checking. This commit therefore
makes ->dynticks_nesting be a simple counter.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | kernel/rcu/tree.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 46a5d1991450..dbd7e3753bed 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -39,7 +39,6 @@ */ struct rcu_dynticks { long long dynticks_nesting; /* Track irq/process nesting level. */ - /* Process level is worth LLONG_MAX/2. */ int dynticks_nmi_nesting; /* Track NMI nesting level. */ atomic_t dynticks; /* Even value for idle, else odd. */ bool rcu_need_heavy_qs; /* GP old, need heavy quiescent state. */ |