This seems to take about 3us on my Intel system. Two changes required:
- Have the caller to mi_switch() be responsible for calling spc_lock().
- Avoid using l->l_cpu in mi_switch().
While here:
- Add a couple of calls to membar_enter()
- Have the idle LWP set itself to LSIDL, to match softint_thread().
- Remove unused return value from mi_switch().
uniformly use 'j' in the user-provided formatting strings instead
of depending on _LP64 to use 'll' or 'l' (and the PRI macros). The
alternative is to parse the printf format manually to determine
which modifier to apply which would make this transparent to the
user (they could still always use '%u' or '%x'), but that's too
painful.
netbsd_elfcore_procinfo is still in version 1.
cpi_siglwp is stored in the same netbsd_elfcore_procinfo version (1).
The size of struct is stored in cpi_cpisize and the struct can be
expanded without versioning the struct.
The seed file is updated by entering the old seed into the system and
then hashing the old seed together with data from /dev/urandom, and
writing it atomically with write-to-temporary/rename-to-permanent.
This way, interruption by crash or power loss does not obliterate
your persistent entropy (unless it causes file system corruption).
changes macallan@ commited to fix FIRMWORKSBUGS issues
in openfirmware() have fixed the hangs seen on PegasosII.
hooray!
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Log Message:
workaround a problem with the pegasos firmware interface:
attempting to use /dev/openfirm on this machine hangs hard.
this isn't a new problem, and i've been meaning to try to
figure it out for years, but it's become a problem since
the xf86-video-radeon driver gained code to look for the
macppc model using this interface.
this is why xorg-server 1.18 and 1.20 hang recently on the
pegasosII.
this change is fairly ugly but i couldn't think of a less
ugly method to avoid /dev/openfirm working just on this
one platform. introduce new __OPENFIRMIO_OPEN_CHECK_BROKEN
macro and associated __openfirmio_open_check_broken(), and
use them in the new openfirmopen() to fail opens.
include proplib.h in macppc and ofppc autoconf.h since they
use it.
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