From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/kernel/time/hrtimer.c | 30 ------------------------------
1 files changed, 0 insertions(+), 30 deletions(-)
diff --git a/kernel/kernel/time/hrtimer.c b/kernel/kernel/time/hrtimer.c
index 3db616a..544ce87 100644
--- a/kernel/kernel/time/hrtimer.c
+++ b/kernel/kernel/time/hrtimer.c
@@ -2052,36 +2052,6 @@
}
#endif
-#ifdef CONFIG_PREEMPT_RT
-/*
- * Sleep for 1 ms in hope whoever holds what we want will let it go.
- */
-void cpu_chill(void)
-{
- unsigned int freeze_flag = current->flags & PF_NOFREEZE;
- struct task_struct *self = current;
- ktime_t chill_time;
-
- raw_spin_lock_irq(&self->pi_lock);
- self->saved_state = self->state;
- __set_current_state_no_track(TASK_UNINTERRUPTIBLE);
- raw_spin_unlock_irq(&self->pi_lock);
-
- chill_time = ktime_set(0, NSEC_PER_MSEC);
-
- current->flags |= PF_NOFREEZE;
- schedule_hrtimeout(&chill_time, HRTIMER_MODE_REL_HARD);
- if (!freeze_flag)
- current->flags &= ~PF_NOFREEZE;
-
- raw_spin_lock_irq(&self->pi_lock);
- __set_current_state_no_track(self->saved_state);
- self->saved_state = TASK_RUNNING;
- raw_spin_unlock_irq(&self->pi_lock);
-}
-EXPORT_SYMBOL(cpu_chill);
-#endif
-
/*
* Functions related to boot-time initialization:
*/
--
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