all open TCP connections in tcp_slowtimo() (which is called 2x
per second). It's fairly rare for TCP timers to actually fire,
so saving this list traversal is good, especially if you want
to scale to thousands of open connections.
This will allow improvements to the pmaps so that they can more easily defer expensive operations, eg tlb/cache flush, til the last possible moment.
Currently this is a no-op on most platforms, so they should see no difference.
Reviewed by Jason.
and call it directly from tcp_slowtimo() (via a table) rather
than going through tcp_userreq().
This will allow us to call TCP timers directly from callouts,
in a future revision.
this file; while I'm here, rework the GIO arbitrator parameter setup to
match more closely what is done by lunix on the same hardware... Finally,
on a tip from Wilbern Cobb, preserve the graphics-related bits of the
GIO arbitrator parameter register from the PROM-initialized settings so
ARCS console on the graphics display works (tested on both my Indy with
Newport and my Indigo2 with XL gfx).
Instead of incrementing t_idle and t_rtt in tcp_slowtimo(), we now
take a timstamp (via tcp_now) and use subtraction to compute the
delta when we actually need it (using unsigned arithmetic so that
tcp_now wrapping is handled correctly).
Based on similar changes in FreeBSD.
be spread over several devices, and the phcb is usually the main one.
Add agp_machdep.c file which implements MD agp functions (currently
just agp_flush_cache).
function on all (probed) PCI buses:
int pci_find_device(struct pci_attach_args *pa,
int (*match)(struct pci_attach_args *));
The pci_attach_args structure pointed to by pa is filled in if the
device is found, and 1 is returned. Otherwise 0 is returned.
This function is, unfortunately, needed by the i810 agp code. It's
also of use for LKMs.
Also frob pci_probe_bus to take 2 extra args when used by pci_find_device.
APM_IOC_GETPOWER ioctl read/write. Setting the batteryid in the passed
structure returns the data for just that battery. The old ioctl
remains for binary compatibility but has been renamed.
Itojun already did the hard work -- I just added a couple of lines.
reviewed by: thorpej
Thorpe as an extension to the bus_space(9) API.
Only the mainbus has a working mmap... iomd, podulebus and isa dont have
one yet. Its trivial to add the iomd and isa's memory part but am a bit
hessistant to add it without knowing its implications by heart.
Podulebus might be implemented in 32 bits EASI but otherwise its not really
transparent since there is AFAIK no function to explicitly read one byte or
so .. or is this implemented in a higher level ?
ARM26 and arch/arm32/dnard (Shark) kernels compile and RiscPC and Shark
kernels are tested and function OK.
Implications of other ARM systems like hpcarm and ebarm are propably
minimal or solved trivially.
need to check for curproc being non-NULL since none of the pmap
interfaces which are legal to use in interrupt handlers use this macro.
- use the hit op when flushing the cache in pmap_kremove().
- avoid trusting the optimizer in pmap_clear_reference().
- fix pmap_clear_modify() to reset the mod-bit emulation so we can
detect further modifications to the page, also flushing the cache
for any mappings which might have dirty lines.
kernel_map. use this instead of the static map entries when allocating
map entries for kernel_map. this greatly reduces the number of static
map entries used and should eliminate the problems with running out.
chris