[tip: sched/fifo] sched,watchdog: Convert to sched_set_fifo()

[tip-bot2 for Peter Zijlstra]

The following commit has been merged into the sched/fifo branch of tip:

Commit-ID:     94beddacb53cddb78baab6b4597195bb766d70b0
Gitweb:        
https://git.kernel.org/tip/94beddacb53cddb78baab6b4597195bb766d70b0
Author:        Peter Zijlstra <pet...@infradead.org>
AuthorDate:    Tue, 21 Apr 2020 12:09:13 +02:00
Committer:     Peter Zijlstra <pet...@infradead.org>
CommitterDate: Mon, 15 Jun 2020 14:10:24 +02:00

sched,watchdog: Convert to sched_set_fifo()

Because SCHED_FIFO is a broken scheduler model (see previous patches)
take away the priority field, the kernel can't possibly make an
informed decision.

Effectively changes prio from 99 to 50.

Cc: w...@linux-watchdog.org
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Reviewed-by: Ingo Molnar <mi...@kernel.org>
---
 drivers/watchdog/watchdog_dev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 7e4cd34..b9dc2c3 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -1144,14 +1144,13 @@ void watchdog_dev_unregister(struct watchdog_device 
*wdd)
 int __init watchdog_dev_init(void)
 {
        int err;
-       struct sched_param param = {.sched_priority = MAX_RT_PRIO - 1,};
 
        watchdog_kworker = kthread_create_worker(0, "watchdogd");
        if (IS_ERR(watchdog_kworker)) {
                pr_err("Failed to create watchdog kworker\n");
                return PTR_ERR(watchdog_kworker);
        }
-       sched_setscheduler(watchdog_kworker->task, SCHED_FIFO, &param);
+       sched_set_fifo(watchdog_kworker->task);
 
        err = class_register(&watchdog_class);
        if (err < 0) {