Commit Graph

29 Commits

Author SHA1 Message Date
phk
fc5bad60e3 Use unit number allocation functions for GEOM minor numbers. 2004-10-25 12:28:28 +00:00
phk
042d10f8ef Make withering water tight.
When we orphan/wither a provider, an attached geom+consumer could
end up being withered as a result and it may be in front of us in
the normal object scanning order so we need to do multi-pass.  On
the other hand, there may be withering stuff we can't get rid off
(yet), so we need to keep track of both the existence of withering
stuff and if there is more we can do at this time.
2004-07-08 16:17:14 +00:00
phk
9a7074f4cb Rearrange some of the GEOM debugging tools to be more structured.
Retire g_sanity() and corresponding debugflag (0x8)

  Retire g_{stall,release}_events().

  Under #ifdef DIAGNOSTIC:

    Make g_valid_obj() an official function and have it return an an
    non-zero integer which indicates the kind of object when found.

    Implement G_VALID_{CLASS,GEOM,CONSUMER,PROVIDER}() macros based
    on g_valid_obj().

    Sprinkle calls to these macros liberally over the infrastructure.

    Always check that we do not free a live object.
2004-03-10 08:49:08 +00:00
phk
7a7d406136 More of the event stuff can now be private to geom_event.c 2003-04-23 20:54:42 +00:00
phk
3bbfe9f43b Rename g_call_me() to g_post_event(), and give it a flag
argument to determine if we can M_WAITOK in malloc.
2003-04-23 20:46:12 +00:00
phk
b4c26d2e1a Remove the now unused hardcoded g_post_event() event support. 2003-04-23 20:25:33 +00:00
phk
7c462ceb2b Turn EV_NEW_PROVIDER into a g_call_me() event. 2003-04-23 20:16:13 +00:00
phk
67a31a6107 Convert EV_SPOILED event to use g_call_me(). 2003-04-23 20:06:38 +00:00
phk
16bcc257a6 Turn the hardwired NEW_CLASS event into a g_call_me() event. 2003-04-23 19:34:38 +00:00
phk
51e68a1f27 Move the shutdown eventhandler stuff to a more logical place. 2003-04-23 19:15:27 +00:00
phk
39cbb43bab Add handling for cancelled events in the g_call_me() methods. 2003-04-02 21:10:04 +00:00
phk
cedf04c475 Change events to have an array of "void *" references, and give the
event posting functions varargs to fill these.

Attribute g_call_me() to appropriate g_geom's where necessary.

Add a flag argument to g_call_me() methods which will be used to signal
cancellation of events in the future.

This commit should be a no-op.
2003-04-02 20:41:18 +00:00
phk
5b75c05966 Remove some debugging in the new OAM[*] and add a debug flag for other
parts of it.

[*] I've been asked what "OAM" means:  It's an acronym used in the
telecom industry, "Operations And Maintenance", and there it covers
anything from a single unlabeled led on the frontpanel the the full
nightmare of CMIP for SS7.
2003-03-31 18:35:37 +00:00
phk
063b352331 Turn /dev/geom.ctl from a GEOM class into a plain character device driver
instead, it will never see a disk-I/O transaction, so this is a lot simpler.
2003-03-24 13:37:15 +00:00
phk
8e76f1cefa Introduce g_cancel_events() and use it a couple of places where it makes
sense.
2003-03-23 23:01:40 +00:00
phk
3e8d794231 Introduce an SX lock which allows us to stall event processing
during OAM operations.
2003-03-23 21:58:09 +00:00
phk
9dd05c47c0 Mitigate deadlock situation pending a more complete solution. 2003-03-21 22:05:33 +00:00
phk
abd9cc6d2b Retire the GEOM private statistics code and use devstat instead. 2003-03-18 09:42:33 +00:00
phk
ba1e23916c Implement a handle for efficient implementation of perforations in
lower extremities.

Setting bit 4 in debugflags (sysctl kern.geom.debugflags=16) will
allow any open to succeed on rank#1 providers.  This will generally
correspond to the physical disk devices: ad0, da0, md0 etc.

This fundamentally violates the mechanics of GEOMs autoconfiguration,
and is only provided as a debugging facility, so obviously error
reports on GEOM where this bit is or has been set will not be
accepted.
2003-02-12 09:48:27 +00:00
phk
04a4ba381f 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.
2003-02-08 13:03:57 +00:00
phk
15f4f6a52b Move #defines of major/minor to internal header file so other bits can
share and coordinate with geom_dev.
2003-02-08 12:30:12 +00:00
phk
e8f2dea5dd 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.
2003-02-07 23:08:24 +00:00
phk
36b357552e Add the remaning part of the new libdisk interaction.
WARNING:  This is not a published interface, it is a stopgap measure for
WARNING:  libdisk so we can get 5.0-R out of the door.

Sponsored by:	DARPA & NAI Labs
2002-10-28 22:43:54 +00:00
phk
614e9a7774 Properly isolate the locking domains of sysctl from the topology lock
for the sysctls which report the configuration.

Sponsored by:	DARPA & NAI Labs.
2002-10-04 10:38:36 +00:00
phk
02a0f0a003 Disable the g_sanity() check unless people ask for it in the debugflags.
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:46:29 +00:00
phk
6b59496dd8 Style, whitespace and lint fixes.
Sponsored by:	DARPA & NAI Labs.
2002-09-28 11:57:20 +00:00
phk
83aec680cb 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.
2002-09-27 20:38:36 +00:00
phk
46a753d1ac s/classs/classes/ to fixup grammer after the previous global renaming.
Sponsored by: DARPA & NAI Labs
2002-04-04 09:41:47 +00:00
phk
aeded84143 Eliminate some thread pointers which do not make sense anymore.
Split private parts of geom.h into geom_int.h.  The latter should
never be included in class implemtations.
2002-03-26 22:07:38 +00:00