marked SONPROC.
- Fix a bug where all cpu_info structures except for the boot CPUs
would exist at both a CPU-local VA (CPUINFO_VA) and a gloal VA;
The boot CPU's existed only a CPUINFO_VA.
- Add a self-reference pointer to the cpu_info that references the
global address in the MULTIPROCESSOR case. Just allow it to reference
the `local' VA in the single-processor case, as CPUINFO_VA is global
enough when there's only one processor to care about. Change curcpu()
to return the global address.
marked SONPROC.
- Always make curproc, fpcurproc, astpending, and want_resched per-CPU
variables in struct cpu_info. Restructure code accordingly, and trim
a few instructions from a few spots in various places in locore.
p_cpu member to struct proc. Use this in certain places when
accessing scheduler state, etc. For the single-processor case,
just initialize p_cpu in fork1() to avoid having to set it in the
low-level context switch code on platforms which will never have
multiprocessing.
While I'm here, comment a few places where there are known issues
for the SMP implementation.
* Move the clearing of IN_MODIFIED and IN_ACCESSED later, so they are not
cleared if the bread() failed.
* Explicitly set waitfor to 0 in the softdep case, if IN_MODIFIED is not
set (mirroring the bwrite()/bdwrite() decision).
case, which created inodes with dependencies, but no IN_* flag set,
so the dependencies were never flushed (after the waitfor check in
ffs_update was removed).
and bus-independent module that just begins to print things out. No real
code behind it. THIS IS A WORK IN PROGRESS. The *reg.h are woefully
incomplete.
long as at least one of the master or the mirror is available for each
of the N/2 'rows' of the set. (No, RAIDframe doesn't do N-way mirroring..)
Thanks to Manuel Bouyer for noting the problem.
asm statements, obsoluting asm routines in locore.S. They are
designed to work in symmetry as names suggests. savefpregs()
does not clear a global variable fpcurproc. Both would be noops when
NOFPU global symbol is defined.
- MDP_FPUSED flag is not turned on for FPA-less processors like Vr4100
and TX3900 even when processes execute FP insns.
augustss