Messages in this thread | | | Date | Thu, 17 Feb 2000 20:21:14 -0500 | From | Rui Sousa <> | Subject | Bottom Halfs never run, kernel > 2.3.44 |
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Hi,
I'm working on the emu10k1 sound driver (the creative open source one) and starting with kernel 2.3.45 I am seeing a problem where a schedule bottom half is never run.
I've browsed trough the 2.3.45 patch and realized that there were some changes in this area, so I would like to know if the semantics were changed and the driver code needs to be modified or if some bug was introduced :(
The relevant pieces of code are:
struct emu_timer { struct emu_timer *next; struct tq_struct *task; unsigned delay; };
timer_top_half(){ struct emu_timer *timer;
timer = sb_hw->timer; while (timer != NULL) { queue_task(timer->task, &tq_immediate); mark_bh(IMMEDIATE_BH); timer = timer->next; } }
The code works well in 2.2.14 and I have checked that the structures aren't corrupted. Also there is no oops and I can still remove the module, only the bottom half code is never executed...
I'm trying this on a SMP kernel.
Rui Sousa
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