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ANDROID: Export cpu_busy_with_softirqs()

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This function used to be called task_may_not_preempt() in older versions
and used by modules that have their extension to RT. Export it to allow
users to continue to use it.

Bug: 332629555
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I04affb8e9e6258f9fb36ebab4d7956a265e9e299
This commit is contained in:
Qais Yousef
2024-04-03 19:26:59 +00:00
parent baba019a00
commit dcdec80d6b
1 changed files with 5 additions and 2 deletions
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7
kernel/sched/rt.c
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@@ -1636,7 +1636,7 @@ static int find_lowest_rq(struct task_struct *task);
* task is likely to block preemptions soon because it is a * task is likely to block preemptions soon because it is a
* ksoftirq thread that is handling softirqs. * ksoftirq thread that is handling softirqs.
*/ */
static bool cpu_busy_with_softirqs(int cpu) bool cpu_busy_with_softirqs(int cpu)
{ {
u32 softirqs = per_cpu(active_softirqs, cpu) | u32 softirqs = per_cpu(active_softirqs, cpu) |
__cpu_softirq_pending(cpu); __cpu_softirq_pending(cpu);
@@ -1644,11 +1644,12 @@ static bool cpu_busy_with_softirqs(int cpu)
return softirqs & LONG_SOFTIRQ_MASK; return softirqs & LONG_SOFTIRQ_MASK;
} }
#else #else
static bool cpu_busy_with_softirqs(int cpu) bool cpu_busy_with_softirqs(int cpu)
{ {
return false; return false;
} }
#endif /* CONFIG_RT_SOFTIRQ_AWARE_SCHED */ #endif /* CONFIG_RT_SOFTIRQ_AWARE_SCHED */
EXPORT_SYMBOL_GPL(cpu_busy_with_softirqs);
static bool rt_task_fits_cpu(struct task_struct *p, int cpu) static bool rt_task_fits_cpu(struct task_struct *p, int cpu)
{ {
@@ -3168,3 +3169,5 @@ void print_rt_stats(struct seq_file *m, int cpu)
rcu_read_unlock(); rcu_read_unlock();
} }
#endif /* CONFIG_SCHED_DEBUG */ #endif /* CONFIG_SCHED_DEBUG */
extern bool cpu_busy_with_softirqs(int cpu);