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Merge pull request #861 from devarajabc/master

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Fix incorrect description of tasklet
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Alex Kuleshov 2025-04-13 20:42:57 +05:00 committed by GitHub
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Interrupts/linux-interrupts-9.md
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@ -283,7 +283,8 @@ As we can see this structure contains five fields, they are:
* Main callback of the tasklet;
* Parameter of the callback.
In our case, we set only for initialize only two arrays of tasklets in the `softirq_init` function: the `tasklet_vec` and the `tasklet_hi_vec`. Tasklets and high-priority tasklets are stored in the `tasklet_vec` and `tasklet_hi_vec` arrays, respectively. So, we have initialized these arrays and now we can see two calls of the `open_softirq` function that is defined in the [kernel/softirq.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/kernel/softirq.c) source code file:
In our case, we initialize only two per-CPU tasklet vectors: `tasklet_vec` for normal-priority tasklets and `tasklet_hi_vec` for high-priority tasklets. These vectors are implemented as linked lists, with each CPU maintaining its own instance.
After setting up the tasklet vectors, we register two softirq handlers using the `open_softirq` function that is defined in the [kernel/softirq.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/kernel/softirq.c) source code file:
```C
open_softirq(TASKLET_SOFTIRQ, tasklet_action);