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| author | Arnd Bergmann <arnd@arndb.de> | 2023-06-09 14:05:14 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-15 00:01:49 +0200 |
| commit | e0a34641eb551e3c51e1588ef7874f2de2844a06 (patch) | |
| tree | 586c749460dc2922388cf558ec01088823c7abf9 /kernel/rcu/rcuscale.c | |
| parent | rcuscale: Add RCU Tasks Rude testing (diff) | |
| download | linux-e0a34641eb551e3c51e1588ef7874f2de2844a06.tar.xz linux-e0a34641eb551e3c51e1588ef7874f2de2844a06.zip | |
rcuscale: fix building with RCU_TINY
Both the CONFIG_TASKS_RCU and CONFIG_TASKS_RUDE_RCU options
are broken when RCU_TINY is enabled as well, as some functions
are missing a declaration.
In file included from kernel/rcu/update.c:649:
kernel/rcu/tasks.h:1271:21: error: no previous prototype for 'get_rcu_tasks_rude_gp_kthread' [-Werror=missing-prototypes]
1271 | struct task_struct *get_rcu_tasks_rude_gp_kthread(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/rcu/rcuscale.c:330:27: error: 'get_rcu_tasks_rude_gp_kthread' undeclared here (not in a function); did you mean 'get_rcu_tasks_trace_gp_kthread'?
330 | .rso_gp_kthread = get_rcu_tasks_rude_gp_kthread,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| get_rcu_tasks_trace_gp_kthread
In file included from /home/arnd/arm-soc/kernel/rcu/update.c:649:
kernel/rcu/tasks.h:1113:21: error: no previous prototype for 'get_rcu_tasks_gp_kthread' [-Werror=missing-prototypes]
1113 | struct task_struct *get_rcu_tasks_gp_kthread(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~
Also, building with CONFIG_TASKS_RUDE_RCU but not CONFIG_TASKS_RCU is
broken because of some missing stub functions:
kernel/rcu/rcuscale.c:322:27: error: 'tasks_scale_read_lock' undeclared here (not in a function); did you mean 'srcu_scale_read_lock'?
322 | .readlock = tasks_scale_read_lock,
| ^~~~~~~~~~~~~~~~~~~~~
| srcu_scale_read_lock
kernel/rcu/rcuscale.c:323:27: error: 'tasks_scale_read_unlock' undeclared here (not in a function); did you mean 'srcu_scale_read_unlock'?
323 | .readunlock = tasks_scale_read_unlock,
| ^~~~~~~~~~~~~~~~~~~~~~~
| srcu_scale_read_unlock
Move the declarations outside of the RCU_TINY #ifdef and duplicate the
shared stub functions to address all of the above.
Fixes: 88d7ff818f0ce ("rcuscale: Add RCU Tasks Rude testing")
Fixes: 755f1c5eb416b ("rcuscale: Measure RCU Tasks Trace grace-period kthread CPU time")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/rcuscale.c')
| -rw-r--r-- | kernel/rcu/rcuscale.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index 5ce3b4e7ce71..a0eae1900708 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -316,11 +316,20 @@ static struct rcu_scale_ops tasks_ops = { * Definitions for RCU-tasks-rude scalability testing. */ +static int tasks_rude_scale_read_lock(void) +{ + return 0; +} + +static void tasks_rude_scale_read_unlock(int idx) +{ +} + static struct rcu_scale_ops tasks_rude_ops = { .ptype = RCU_TASKS_RUDE_FLAVOR, .init = rcu_sync_scale_init, - .readlock = tasks_scale_read_lock, - .readunlock = tasks_scale_read_unlock, + .readlock = tasks_rude_scale_read_lock, + .readunlock = tasks_rude_scale_read_unlock, .get_gp_seq = rcu_no_completed, .gp_diff = rcu_seq_diff, .async = call_rcu_tasks_rude, |