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.
state into global and per-CPU scheduler state:
- Global state: sched_qs (run queues), sched_whichqs (bitmap
of non-empty run queues), sched_slpque (sleep queues).
NOTE: These may collectively move into a struct schedstate
at some point in the future.
- Per-CPU state, struct schedstate_percpu: spc_runtime
(time process on this CPU started running), spc_flags
(replaces struct proc's p_schedflags), and
spc_curpriority (usrpri of processes on this CPU).
- Every platform must now supply a struct cpu_info and
a curcpu() macro. Simplify existing cpu_info declarations
where appropriate.
- All references to per-CPU scheduler state now made through
curcpu(). NOTE: this will likely be adjusted in the future
after further changes to struct proc are made.
Tested on i386 and Alpha. Changes are mostly mechanical, but apologies
in advance if it doesn't compile on a particular platform.
contains the values __SIMPLELOCK_LOCKED and __SIMPLELOCK_UNLOCKED, which
replace the old SIMPLELOCK_LOCKED and SIMPLELOCK_UNLOCKED. These files
are also required to supply inline functions __cpu_simple_lock(),
__cpu_simple_lock_try(), and __cpu_simple_unlock() if locking is to be
supported on that platform (i.e. if MULTIPROCESSOR is defined in the
_KERNEL case). Change these functions to take an int * (&alp->lock_data)
rather than the struct simplelock * itself.
These changes make it possible for userland to use the locking primitives
by including <machine/lock.h>.
an extern for 'struct platform platform' further down this file anyway,
and this would have declared a 'platform' variable in any userland code
including this file.
- Add a bitmask for the CPUs which need an isync before this pmap returns
to userspace on that CPU.
- Define PMAP_USERRET(), a utility macro for userret() to use to process
the deferred isync, and call it as appropriate in userret().
- Add sysarch methods for "get bus window count", "get bus window",
and "pci conf read/write".
These are a hack, but they're what's necessary in order to make
XFree86 work in its current state.
processors. Instead, allocate separate idle PCBs for them (including
the primary -- don't use proc0's for its idle context).
- Use SysValue to store the cpu_info for each processor.
