linux-imx
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committed 1342d8080f682
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* right now. Let ksoftirqd handle this at its own rate, to get fairness,83
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* unless we're doing some of the synchronous softirqs.84
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*/85
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#define SOFTIRQ_NOW_MASK ((1 << HI_SOFTIRQ) | (1 << TASKLET_SOFTIRQ))86
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static bool ksoftirqd_running(unsigned long pending)87
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{88
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struct task_struct *tsk = __this_cpu_read(ksoftirqd);89
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if (pending & SOFTIRQ_NOW_MASK)91
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return false;92
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return tsk && (tsk->state == TASK_RUNNING);92
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return tsk && (tsk->state == TASK_RUNNING) &&93
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!__kthread_should_park(tsk);93
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}94
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/*96
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* preempt_count and SOFTIRQ_OFFSET usage:97
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* - preempt_count is changed by SOFTIRQ_OFFSET on entering or leaving98
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* softirq processing.99
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* - preempt_count is changed by SOFTIRQ_DISABLE_OFFSET (= 2 * SOFTIRQ_OFFSET)100
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* on local_bh_disable or local_bh_enable.101
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* This lets us distinguish between whether we are currently processing102
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* softirq and whether we just have bh disabled.