mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
df5bd5144a
Currently, the piggybacked-work checks carried out by sync_exp_work_done() atomically increment a small set of variables (the ->expedited_workdone0, ->expedited_workdone1, ->expedited_workdone2, ->expedited_workdone3 fields in the rcu_state structure), which will form a memory-contention bottleneck given a sufficiently large number of CPUs concurrently invoking either synchronize_rcu_expedited() or synchronize_sched_expedited(). This commit therefore moves these for fields to the per-CPU rcu_data structure, eliminating the memory contention. The show_rcuexp() function also changes to sum up each field in the rcu_data structures. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
||
|---|---|---|
| .. | ||
| Makefile | ||
| rcu.h | ||
| rcutorture.c | ||
| srcu.c | ||
| sync.c | ||
| tiny_plugin.h | ||
| tiny.c | ||
| tree_plugin.h | ||
| tree_trace.c | ||
| tree.c | ||
| tree.h | ||
| update.c | ||