as that seems to be enough to accomodate the current biggest stack usages
there are about six functions which use over 3KiB local stack, and
about a dozen between 2-3 KiB, so pushing this further needs more work
if desired
compile tested on amd64, i386, sparc64, sparc, powerpc (evbppc - BookE),
m68k (mac68k)
of (1 << UBC_WINSHIFT, MAX_PAGE_SIZE)
given that default UBC_WINSHIFT is 13, this changes behaviour only
for mips and powerpc (BookE/OEA), which will now have twice as much
memory used for UBC windows; if this ever becomes a problem, it's
possible to reduce ubc_nwins in MD code similar to what is done on sparc
this eliminates variable-length arrays in ubc_fault(),
ubc_uiomove(), and ubc_zerorange() so that the stack usage can be
determined and checked in compile time
in uvm_aio_aiodone() so that the stack usage can be determined and
checked in compile time; this is not called recursively not
particularly deep in call stack, so there is no need to save every
last drop of stack space here
- Use workqueue instead of softint to make some functions sleepable.
- Use new workqueue and enqueue it in ixgbe_local_timer() and
ixgbe_recovery_mode_timer() to make them sleepable.
- Make new ixgbe_delay() and use it. This functions sleeps if the time is
more than equals 1 tick. If it's not, do delay().
GNU m4 --error-output is the same as -o despite the name. It does NOT
affect warnings, error messages, and 'errprint' output so drop the
misguided bit of code that tried to freopen stderr without closing it
on failure. Drop -e (which was our local invention) and make merge
--error-output with -o so that both set traceout. Make trace_file()
preserve the old traceout on error and return error status so that the
caller can emit appropriate warning.
Do not yet support disabling tracing with an empty name, the rest of
the code is not ready, we don't do -o positionally and we don't have
`debugfile'.
it's too early for kmem_alloc(), so use static variable in BSS; it's used
post reloc, so don't need to use the RELOC() macros
XXX compile-tested only on i386
`mv -h source target' just issues rename(source, target) without
discriminating on whether target resolves to a directory; this way
you can atomically replace a symlink to a directory.
Try to avoid the trap we set up ourselves while avoiding freopen(3).
When exit flushes and closes open streams it may close sfp first and
when it comes about to flush and close stderr, the descriptor is
already gone and we lose any buffered error output. This actually
happens on some hosts, breaking --trace output used by autoconf.
temporary zbookmark_phys_t using kmem_alloc() rather than stack;
this recuses several times usually, and this saves 2x
sizeof(zbookmark_phys_t) == 64 bytes per recursion
part of fix for PR kern/55402 by Frank Kardel
on-stack - this function is called recursively, and the 120 bytes per call
add up; also remove unused variable
part of fix for PR kern/55402 by Frank Kardel
the field indeed is supposed to be set to GRANT_INVALID_REF at this moment,
the grant must be already revoked by this time
pointed out by Taylor R Campbell
