linux/kernel/rcu
Paul E. McKenney 258f887aba rcu: Disable run-time single-CPU grace-period optimization
The run-time single-CPU grace-period optimization applies only to
kernels built with CONFIG_SMP=y && CONFIG_PREEMPTION=y that are running
on a single-CPU system.  But a kernel intended for a single-CPU system
should instead be built with CONFIG_SMP=n, and in any case, single-CPU
systems running Linux no longer appear to be the common case.  Plus this
optimization results in the rcu_gp_oldstate structure being half again
larger than it needs to be.

This commit therefore disables the run-time single-CPU grace-period
optimization, so that this optimization applies only during the
pre-scheduler portion of the boot sequence.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-08-31 05:08:08 -07:00
..
Kconfig Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
Kconfig.debug Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
Makefile
rcu_segcblist.c rcu: Clarify fill-the-gap comment in rcu_segcblist_advance() 2022-04-11 17:28:48 -07:00
rcu_segcblist.h rcu: Mark writes to the rcu_segcblist structure's ->flags field 2022-02-14 10:36:58 -08:00
rcu.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
rcuscale.c rcuscale: Fix smp_processor_id()-in-preemptible warnings 2022-06-21 15:57:04 -07:00
rcutorture.c rcu: Add full-sized polling for cond_sync_exp_full() 2022-08-31 05:08:08 -07:00
refscale.c refscale: Convert test_lock spinlock to raw_spinlock 2022-06-21 15:57:04 -07:00
srcutiny.c srcu: Prevent redundant __srcu_read_unlock() wakeup 2021-11-30 17:28:16 -08:00
srcutree.c srcu: Make expedited RCU grace periods block even less frequently 2022-07-19 11:39:59 -07:00
sync.c rcu_sync: Fix comment to properly reflect rcu_sync_exit() behavior 2022-04-20 16:51:11 -07:00
tasks.h rcu-tasks: Use delayed_work to delay rcu_tasks_verify_self_tests() 2022-06-21 15:49:38 -07:00
tiny.c rcu: Add full-sized polling for get_completed*() and poll_state*() 2022-08-31 05:08:07 -07:00
tree_exp.h rcu: Add full-sized polling for cond_sync_exp_full() 2022-08-31 05:08:08 -07:00
tree_nocb.h rcu/nocb: Avoid polling when my_rdp->nocb_head_rdp list is empty 2022-07-19 11:43:55 -07:00
tree_plugin.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
tree_stall.h RCU pull request for v5.20 (or whatever) 2022-08-02 19:12:45 -07:00
tree.c rcu: Disable run-time single-CPU grace-period optimization 2022-08-31 05:08:08 -07:00
tree.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
update.c Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00