Changeset 5b03a72 in mainline for kernel/generic/include/synch/rcu.h

Timestamp:

2012-07-29T17:53:48Z (12 years ago)

Author:

Adam Hraska <adam.hraska+hos@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f0fcb04

Parents:

8e3ed06

Message:

rcu: Switched from using THREAD→nesting_cnt to CPU→nesting_cnt as the main nesting count variable. RCU no longer has to mess with pointers to the corrent nesting_cnt (and gets rid of one level of indirection when accessing the nesting count in reader sections).

File:

• kernel/generic/include/synch/rcu.h (modified) (2 diffs)

kernel/generic/include/synch/rcu.h

@@ -181 +181 @@
 
         /* Record a QS if not in a reader critical section. */
-        if (0 == *CPU->rcu.pnesting_cnt)
+        if (0 == CPU->rcu.nesting_cnt)
                 _rcu_record_qs();
 
-        ++(*CPU->rcu.pnesting_cnt);
+        ++CPU->rcu.nesting_cnt;
 
         preemption_enable();
@@ -195 +195 @@
         preemption_disable();
         
-        if (0 == --(*CPU->rcu.pnesting_cnt)) {
+        if (0 == --CPU->rcu.nesting_cnt) {
                 _rcu_record_qs();