Move the g_stat struct to its own .h file, we will export it to other code.

Insted of embedding a struct g_stat in consumers and providers, merely
include a pointer.

Remove a couple of <sys/time.h>

Move the g_stat struct to its own .h file, we will export it to other code.

Insted of embedding a struct g_stat in consumers and providers, merely
include a pointer.

Remove a couple of <sys/time.h> includes now unneeded.

Add a special allocator for struct g_stat. This allocator will allocate
entire pages and hand out g_stat functions from there. The "id" field
indicates free/used status.

Add "/dev/geom.stats" device driver whic exports the pages from the
allocator to userland with mmap(2) in read-only mode.

This mmap(2) interface should be considered a non-public interface and
the functions in libgeom (not yet committed) should be used to access
the statistics data.

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Commit the correct copy of the g_stat structure.

Add debug.sizeof.g_stat sysctl.

Set the id field of the g_stat when we create consumers and providers.

Remove biocount from consumer, we will use t

Commit the correct copy of the g_stat structure.

Add debug.sizeof.g_stat sysctl.

Set the id field of the g_stat when we create consumers and providers.

Remove biocount from consumer, we will use the counters in the g_stat
structure instead. Replace one field which will need to be atomically
manipulated with two fields which will not (stat.nop and stat.nend).

Change add companion field to bio_children: bio_inbed for the exact
same reason.

Don't output the biocount in the confdot output.

Fix KASSERT in g_io_request().

Add sysctl kern.geom.collectstats defaulting to off.

Collect the following raw statistics conditioned on this sysctl:

for each consumer and provider {
total number of operations started.
total number of operations completed.
time last operation completed.
sum of idle-time.
for each of BIO_READ, BIO_WRITE and BIO_DELETE {
number of operations completed.
number of bytes completed.
number of ENOMEM errors.
number of other errors.
sum of transaction time.
}
}

API for getting hold of these statistics data not included yet.

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Add the new statistics structure, put one in consumers and providers.
include <sys/time.h> as necessary.

Use a void * to carry the private data for return-call'ed ioctl requests.
Amongst other things this avoids a complex workaround in the userland
regression bits.

Remove g_silence(). It does not do anything anymore.

Constification and some s/int/u_int/ changes.

Use more mnemonic argument names in the access functions.

Sponsored by: DARPA & NAI Labs
Approved by: re (blanket)

Straighten up the geom.ctl config interface definitions.

Sponsored by: DARPA & NAI Labs

Add a g_dev_print() function which prints all the /dev entries GEOM
know about.

Make the sectorsize a property of providers so we can include it in the XML
output.

Sponsored by: DARPA & NAI Labs

Make it possible to specify also via geom_t ID in the geom.ctl config ioctl.

Sponsored by: DARPA & NAI Labs.

Constification ? Yes, out that door, row on the left, one patch each.

Sponsored by: DARPA & NAI Labs

Moved geom class initialization to SI_SUB_DRIVERS from SI_SUB_PSEUDO.
This fixes mounting root from md(4) which calls disk_create() early.

Implement the GEOMCONFIGGEOM ioctl which can be used to manually create
and configure an instance of a class on a give provider.

Sponsored by: DARPA & NAI Labs

Add the outline of the "/dev/geom.ctl" handling code.

Sponsored by: DARPA & NAI Labs.

Give GEOM modules a chance to specify their own init routine, in case they
have special requirements.

Sponsored by: DARPA & NAI Labs.

Copyin and copyout are only possible from a process-native thread,
and therefore we need a way for ioctl handlers to run in that thread
in GEOM. Rather than invent a complicated registration system

Copyin and copyout are only possible from a process-native thread,
and therefore we need a way for ioctl handlers to run in that thread
in GEOM. Rather than invent a complicated registration system to
recognize which ioctl handler to use for a given ioctl, we still
schedule all ioctls down the tree as bio transactions but add a
special return code that means "call me directly" and have the
geom_dev layer do that.

Use this for all ioctls that make it as far as a diskdriver to
avoid any backwards compatibility problems.

Requested by: scottl
Sponsored by: DARPA & NAI Labs

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Retire g_io_fail() and let g_io_deliver() take an error argument instead.

Sponsored by: DARPA & NAI Labs.

Introduce g_write_data() function.

Sponsored by: DARPA & NAI Labs

Add missing g_enc_le2().

Sponsored by: DARPA & NAI Labs.

Various no-ops:

Add a __unused.

Make the 2byte decoder functions return 16 bits for the benefits
of picky lints.

No need to grab giant around a tsleep() when we have a timeout.

Sponsored by: DARP

Various no-ops:

Add a __unused.

Make the 2byte decoder functions return 16 bits for the benefits
of picky lints.

No need to grab giant around a tsleep() when we have a timeout.

Sponsored by: DARPA & NAI Labs.

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Implement g_call_me() as a way for geom methods to schedule operations
to be performed in the event-thread.

To do this, we need to lock the eventlist with g_eventlock (nee g_doorlock),
since g_call_

Implement g_call_me() as a way for geom methods to schedule operations
to be performed in the event-thread.

To do this, we need to lock the eventlist with g_eventlock (nee g_doorlock),
since g_call_me() being called from the UP/DOWN paths will not be able to
aquire g_topology_lock.

This also means that for now these events are not referenced on any
particular consumer/provider/geom.

For UP/DOWN path use, this will not become a problem since the access()
function will make sure we drain any bio's before we dismantle.

Sponsored by: DARPA & NAI Labs.

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Add a couple more of the big/little-endian conversion routines and make
them visible from userland, if need be.

I wish that the C language contained this as part of struct definintions,
but failing

Add a couple more of the big/little-endian conversion routines and make
them visible from userland, if need be.

I wish that the C language contained this as part of struct definintions,
but failing that, I would settle for an agreed upon set of functions for
packing/unpacking integers in various sizes from byte-streams which may
have unfriendly alignment.

This really belongs in <sys/endian.h> I guess.

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Remove "magicspace". It looks good on paper, it doesn't work in practice.

Sponsored by: DARPA & NAI Labs.

Improve some on the naming.

Submitted by: iedowse