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As soon as we have several threads per process now, it is not correct to

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use process ID as ACPI thread ID. Concurrent requests with equal thread
IDs broke ACPI mutexes operation causing unpredictable errors including
AE_AML_MUTEX_NOT_ACQUIRED that I have seen.

Use kernel thread ID instead of process ID for ACPI thread.
This commit is contained in:
Alexander Motin 2008-11-02 12:50:16 +00:00
parent 2a9e5e2e7c
commit 57675eb3fa
1 changed files with 1 additions and 5 deletions
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6
sys/dev/acpica/Osd/OsdSchedule.c
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@ -187,13 +187,9 @@ AcpiOsStall(UINT32 Microseconds)
ACPI_THREAD_ID
AcpiOsGetThreadId(void)
{
struct proc *p;
/* XXX do not add ACPI_FUNCTION_TRACE here, results in recursive call. */
p = curproc;
KASSERT(p != NULL, ("%s: curproc is NULL!", __func__));
/* Returning 0 is not allowed. */
return (p->p_pid + 1);
return (curthread->td_tid + 1);
}