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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-03-26 02:39:01 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-04-21 02:53:19 +0300 |
| commit | 4df002d908796c1ff87b985af1d31a0e36e6c66f (patch) | |
| tree | 7db00121a446072dcab18501497d5a6934f753df /kernel/rcu | |
| parent | dec86781a54f4a527386a0b86b22e99e2ac67a09 (diff) | |
| download | linux-4df002d908796c1ff87b985af1d31a0e36e6c66f.tar.xz | |
rcuscale: Allow rcuscale without RCU Tasks
Currently, a CONFIG_PREEMPT_NONE=y kernel substitutes normal RCU for
RCU Tasks. Unless that kernel builds rcuscale, whether built-in or as
a module, in which case RCU Tasks is (unnecessarily) built. This both
increases kernel size and increases the complexity of certain tracing
operations. This commit therefore decouples the presence of rcuscale
from the presence of RCU Tasks.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/Kconfig.debug | 1 | ||||
| -rw-r--r-- | kernel/rcu/rcuscale.c | 12 |
2 files changed, 11 insertions, 2 deletions
diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug index dceaa3e754e5..71e73fceff87 100644 --- a/kernel/rcu/Kconfig.debug +++ b/kernel/rcu/Kconfig.debug @@ -28,7 +28,6 @@ config RCU_SCALE_TEST depends on DEBUG_KERNEL select TORTURE_TEST select SRCU - select TASKS_RCU select TASKS_RUDE_RCU select TASKS_TRACE_RCU default n diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index 5e4f1f83d38e..311dbcb064ed 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -268,6 +268,8 @@ static struct rcu_scale_ops srcud_ops = { .name = "srcud" }; +#ifdef CONFIG_TASKS_RCU + /* * Definitions for RCU-tasks scalability testing. */ @@ -295,6 +297,14 @@ static struct rcu_scale_ops tasks_ops = { .name = "tasks" }; +#define TASKS_OPS &tasks_ops, + +#else // #ifdef CONFIG_TASKS_RCU + +#define TASKS_OPS + +#endif // #else // #ifdef CONFIG_TASKS_RCU + /* * Definitions for RCU-tasks-trace scalability testing. */ @@ -797,7 +807,7 @@ rcu_scale_init(void) long i; int firsterr = 0; static struct rcu_scale_ops *scale_ops[] = { - &rcu_ops, &srcu_ops, &srcud_ops, &tasks_ops, &tasks_tracing_ops + &rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS &tasks_tracing_ops }; if (!torture_init_begin(scale_type, verbose)) |