On Monday 11 May 2009 09:52 am, John Baldwin wrote: > On Tuesday 05 May 2009 5:43:01 pm Jung-uk Kim wrote: > > On Tuesday 05 May 2009 04:09 pm, Jung-uk Kim wrote: > > > On Tuesday 05 May 2009 12:51 pm, Andriy Gapon wrote: > > > > BTW, this issue seems to be fixed in Jung-uk's acpi patches > > > > for newer acpica imports, but it is not fixed both in > > > > stable/7 and head. > > > > > > Yes, it was fixed in my patchsets long ago, which uses spin > > > lock for AcpiOsAcquireLock(). :-) > > > > The attached patch is for -STABLE. Note that it is only compile > > tested on amd64. > > This looks fine to test. The patch has gratuitous style changes I > wouldn't include in a commit though.
It should work but I don't plan to commit it any time soon. :-) In fact, the patch was meant to be a rewrite for new ACPI-CA, which actually has a real mutex. Currently, mutex is emulated with semaphore. The problem is semaphore has no concept of ownership while mutex does, i.e., any thread can acquire/release it without checking its ownership or order. FYI, the OSL API (ACPI_MUTEX_TYPE) is finalized in ACPI-CA 20081204. Jung-uk Kim _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
