2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-18 01:50:31 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
firewire: reorganize header files
The three header files of firewire-core, i.e.
"drivers/firewire/fw-device.h",
"drivers/firewire/fw-topology.h",
"drivers/firewire/fw-transaction.h",
are replaced by
"drivers/firewire/core.h",
"include/linux/firewire.h".
The latter includes everything which a firewire high-level driver (like
firewire-sbp2) needs besides linux/firewire-constants.h, while core.h
contains the rest which is needed by firewire-core itself and by low-
level drivers (card drivers) like firewire-ohci.
High-level drivers can now also reside outside of drivers/firewire
without having to add drivers/firewire to the header file search path in
makefiles. At least the firedtv driver will be such a driver.
I also considered to spread the contents of core.h over several files,
one for each .c file where the respective implementation resides. But
it turned out that most core .c files will end up including most of the
core .h files. Also, the combined core.h isn't unreasonably big, and it
will lose more of its contents to linux/firewire.h anyway soon when more
firewire drivers are added. (IP-over-1394, firedtv, and there are plans
for one or two more.)
Furthermore, fw-ohci.h is renamed to ohci.h. The name of core.h and
ohci.h is chosen with regard to name changes of the .c files in a
follow-up change.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-06-05 16:26:18 +02:00
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
2009-02-15 23:12:34 +01:00
|
|
|
|
2009-06-04 21:09:38 +02:00
|
|
|
|
2008-10-05 10:37:11 +02:00
|
|
|
|
2008-04-18 22:21:05 -04:00
|
|
|
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 17:04:11 +09:00
|
|
|
|
2008-10-03 11:19:09 -04:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-04 21:09:38 +02:00
|
|
|
|
|
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
firewire: reorganize header files
The three header files of firewire-core, i.e.
"drivers/firewire/fw-device.h",
"drivers/firewire/fw-topology.h",
"drivers/firewire/fw-transaction.h",
are replaced by
"drivers/firewire/core.h",
"include/linux/firewire.h".
The latter includes everything which a firewire high-level driver (like
firewire-sbp2) needs besides linux/firewire-constants.h, while core.h
contains the rest which is needed by firewire-core itself and by low-
level drivers (card drivers) like firewire-ohci.
High-level drivers can now also reside outside of drivers/firewire
without having to add drivers/firewire to the header file search path in
makefiles. At least the firedtv driver will be such a driver.
I also considered to spread the contents of core.h over several files,
one for each .c file where the respective implementation resides. But
it turned out that most core .c files will end up including most of the
core .h files. Also, the combined core.h isn't unreasonably big, and it
will lose more of its contents to linux/firewire.h anyway soon when more
firewire drivers are added. (IP-over-1394, firedtv, and there are plans
for one or two more.)
Furthermore, fw-ohci.h is renamed to ohci.h. The name of core.h and
ohci.h is chosen with regard to name changes of the .c files in a
follow-up change.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-06-05 16:26:18 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-07-07 13:26:18 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
2009-12-26 01:43:21 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
2009-02-16 00:22:05 +01:00
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: fix Model_ID in modalias
The modalias string of devices that represent units on a FireWire node
did not show Module_ID entries within unit directories. This was
because firewire-core searched only the root directory of the
configuration ROM for a Model_ID entry.
We now search first the root directory, then the unit directory. IOW
honor a unit directory's Model_ID if present, otherwise fall back to the
root directory's model ID (if present).
Furthermore, apply the same change to Vendor_ID. This had the same
issue but it was less apparent because most devices provide Vendor_ID
only in the root directory.
And finally, also use this strategy for the remaining two IDs in the
modalias, Specifier_ID and Version. It does not actually make sense to
look for them elsewhere than in the unit directory because they are
mandatory there. However, a uniform search order simplifies the
implementation and has no adverse affect in practice.
Side notes:
- The older counterpart of this, nodemgr.c of ieee1394, looked for
Vendor_ID first in the root directory, then in the unit directory,
and for Model_ID only in the unit directory.
- There is a single mainline driver which requires Vendor_ID and
Model_ID --- the firedtv driver. This one worked because FireDTVs
provide Vendor_ID in the root directory and Model_ID identically in
root directory and unit directory.
- Apart from firedtv, there are currently no drivers known to me
(including userspace drivers) that look at the Vendor_ID or Model_ID
of the modalias.
Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-03-19 00:38:29 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-03-19 00:39:07 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: fix Model_ID in modalias
The modalias string of devices that represent units on a FireWire node
did not show Module_ID entries within unit directories. This was
because firewire-core searched only the root directory of the
configuration ROM for a Model_ID entry.
We now search first the root directory, then the unit directory. IOW
honor a unit directory's Model_ID if present, otherwise fall back to the
root directory's model ID (if present).
Furthermore, apply the same change to Vendor_ID. This had the same
issue but it was less apparent because most devices provide Vendor_ID
only in the root directory.
And finally, also use this strategy for the remaining two IDs in the
modalias, Specifier_ID and Version. It does not actually make sense to
look for them elsewhere than in the unit directory because they are
mandatory there. However, a uniform search order simplifies the
implementation and has no adverse affect in practice.
Side notes:
- The older counterpart of this, nodemgr.c of ieee1394, looked for
Vendor_ID first in the root directory, then in the unit directory,
and for Model_ID only in the unit directory.
- There is a single mainline driver which requires Vendor_ID and
Model_ID --- the firedtv driver. This one worked because FireDTVs
provide Vendor_ID in the root directory and Model_ID identically in
root directory and unit directory.
- Apart from firedtv, there are currently no drivers known to me
(including userspace drivers) that look at the Vendor_ID or Model_ID
of the modalias.
Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-03-19 00:38:29 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-09 19:23:14 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-08-14 15:15:12 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-02-06 14:49:37 -05:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
2009-12-24 11:59:57 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
2007-03-27 19:35:13 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-27 19:35:13 -04:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
2009-05-22 23:16:27 +02:00
|
|
|
|
2007-03-27 19:35:13 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-24 10:06:31 -07:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:46 -05:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-07 12:12:46 -05:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-07 12:12:46 -05:00
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:35 -04:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:35 -04:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-20 20:58:35 -04:00
|
|
|
|
|
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
firewire: core: add sysfs attribute for easier udev rules
This adds the attribute /sys/bus/firewire/devices/fw[0-9]+/units. It
can be used in udev rules like the following ones:
# IIDC devices: industrial cameras and some webcams
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010?*", GROUP="video"
# AV/C devices: camcorders, set-top boxes, TV sets, audio devices, ...
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", GROUP="video"
Background:
firewire-core manages two device types:
- fw_device is a FireWire node. A character device file is associated
with it.
- fw_unit is a unit directory on a node. Each fw_device may have 0..n
children of type fw_unit. The units tell us what kinds of protocols
a node implements.
We want to set ownership or ACLs or permissions of the character device
file of an fw_device, or/and create symlinks to it, based on available
protocols. Until now udev rules had to look at the fw_unit devices and
then modify their parent's character device file accordingly. This is
problematic for two reasons: 1) It happens sometime after the creation
of the fw_device, 2) an access policy may require that information from
all children is evaluated before a decision about the parent is made.
Problem 1) can ultimately not be avoided since this is the nature of
FireWire nodes: They may add or remove unit directories at any point in
time.
However, we can still help userland a lot by providing the protocol type
information of all units in a summary sysfs attribute directly at the
fw_device. This way,
- the information is immediately available at the affected device
when userspace goes about to handle an ADD or CHANGE event of the
fw_device,
- with most policies, it won't be necessary anymore to dig through
child attributes.
The new attribute is called "units". It contains space-separated tuples
of specifier_id and version of each present unit. The delimiter within
tuples is a colon. Specifier_id and version are printed as 0x%06x.
Here is an example of a node which implements an IPv4 unit and an IPv6
unit: $ cat /sys/bus/firewire/devices/fw2/units
0x00005e:0x000001 0x00005e:0x000002
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-05-23 00:03:29 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:35 -04:00
|
|
|
|
firewire: core: add sysfs attribute for easier udev rules
This adds the attribute /sys/bus/firewire/devices/fw[0-9]+/units. It
can be used in udev rules like the following ones:
# IIDC devices: industrial cameras and some webcams
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010?*", GROUP="video"
# AV/C devices: camcorders, set-top boxes, TV sets, audio devices, ...
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", GROUP="video"
Background:
firewire-core manages two device types:
- fw_device is a FireWire node. A character device file is associated
with it.
- fw_unit is a unit directory on a node. Each fw_device may have 0..n
children of type fw_unit. The units tell us what kinds of protocols
a node implements.
We want to set ownership or ACLs or permissions of the character device
file of an fw_device, or/and create symlinks to it, based on available
protocols. Until now udev rules had to look at the fw_unit devices and
then modify their parent's character device file accordingly. This is
problematic for two reasons: 1) It happens sometime after the creation
of the fw_device, 2) an access policy may require that information from
all children is evaluated before a decision about the parent is made.
Problem 1) can ultimately not be avoided since this is the nature of
FireWire nodes: They may add or remove unit directories at any point in
time.
However, we can still help userland a lot by providing the protocol type
information of all units in a summary sysfs attribute directly at the
fw_device. This way,
- the information is immediately available at the affected device
when userspace goes about to handle an ADD or CHANGE event of the
fw_device,
- with most policies, it won't be necessary anymore to dig through
child attributes.
The new attribute is called "units". It contains space-separated tuples
of specifier_id and version of each present unit. The delimiter within
tuples is a colon. Specifier_id and version are printed as 0x%06x.
Here is an example of a node which implements an IPv4 unit and an IPv6
unit: $ cat /sys/bus/firewire/devices/fw2/units
0x00005e:0x000001 0x00005e:0x000002
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-05-23 00:03:29 +02:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2007-03-07 12:12:46 -05:00
|
|
|
|
|
|
|
|
|
2008-12-14 21:47:04 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-07-20 14:20:53 +02:00
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-07-20 14:20:53 +02:00
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
2008-07-20 14:20:53 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-07-20 14:20:53 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-12-26 01:44:10 +01:00
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-06-10 21:31:36 +02:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-06-10 21:31:36 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
|
|
|
|
|
2007-06-10 21:31:36 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
2010-02-18 01:52:45 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
2010-02-18 01:52:45 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2010-02-18 01:50:31 +01:00
|
|
|
|
2008-01-25 17:53:49 +01:00
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2010-02-18 01:50:31 +01:00
|
|
|
|
2010-02-18 01:54:00 +01:00
|
|
|
|
2010-02-18 01:50:31 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2010-02-18 01:50:31 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2009-06-09 23:56:55 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-03-02 19:35:42 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-09 19:23:14 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-05-22 23:16:27 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-27 19:35:13 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-05-22 23:16:27 +02:00
|
|
|
|
2007-03-21 10:55:19 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-11-24 20:40:00 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
|
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: sbp2: parallelize login, reconnect, logout
The struct sbp2_logical_unit.work items can all be executed in parallel
but are not reentrant. Furthermore, reconnect or re-login work must be
executed in a WQ_MEM_RECLAIM workqueue.
Hence replace the old single-threaded firewire-sbp2 workqueue by a
concurrency-managed but non-reentrant workqueue with rescuer.
firewire-core already maintains one, hence use this one.
In earlier versions of this change, I observed occasional failures of
parallel INQUIRY to an Initio INIC-2430 FireWire 800 to dual IDE bridge.
More testing indicates that parallel INQUIRY is not actually a problem,
but too quick successions of logout and login + INQUIRY, e.g. a quick
sequence of cable plugout and plugin, can result in failed INQUIRY.
This does not seem to be something that should or could be addressed by
serialization.
Another dual-LU device to which I currently have access to, an
OXUF924DSB FireWire 800 to dual SATA bridge with firmware from MacPower,
has been successfully tested with this too.
This change is beneficial to environments with two or more FireWire
storage devices, especially if they are located on the same bus.
Management tasks that should be performed as soon and as quickly as
possible, especially reconnect, are no longer held up by tasks on other
devices that may take a long time, especially login with INQUIRY and sd
or sr driver probe.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2011-05-01 20:50:31 +02:00
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: sbp2: parallelize login, reconnect, logout
The struct sbp2_logical_unit.work items can all be executed in parallel
but are not reentrant. Furthermore, reconnect or re-login work must be
executed in a WQ_MEM_RECLAIM workqueue.
Hence replace the old single-threaded firewire-sbp2 workqueue by a
concurrency-managed but non-reentrant workqueue with rescuer.
firewire-core already maintains one, hence use this one.
In earlier versions of this change, I observed occasional failures of
parallel INQUIRY to an Initio INIC-2430 FireWire 800 to dual IDE bridge.
More testing indicates that parallel INQUIRY is not actually a problem,
but too quick successions of logout and login + INQUIRY, e.g. a quick
sequence of cable plugout and plugin, can result in failed INQUIRY.
This does not seem to be something that should or could be addressed by
serialization.
Another dual-LU device to which I currently have access to, an
OXUF924DSB FireWire 800 to dual SATA bridge with firmware from MacPower,
has been successfully tested with this too.
This change is beneficial to environments with two or more FireWire
storage devices, especially if they are located on the same bus.
Management tasks that should be performed as soon and as quickly as
possible, especially reconnect, are no longer held up by tasks on other
devices that may take a long time, especially login with INQUIRY and sd
or sr driver probe.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2011-05-01 20:50:31 +02:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
|
|
|
|
|
2011-01-22 15:05:03 +01:00
|
|
|
|
|
|
|
|
|
2009-01-24 20:35:38 +01:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:48 -05:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
|
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-17 10:57:05 -08:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2010-02-17 10:57:05 -08:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-03-10 21:09:28 +01:00
|
|
|
|
|
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
2009-03-10 21:09:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-09 23:56:55 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-03-10 21:09:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2009-02-03 17:55:19 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-02-27 22:14:27 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2011-03-15 00:08:41 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-01-26 00:38:45 -05:00
|
|
|
|
2008-11-29 17:44:57 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-09 20:49:37 +01:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2009-02-03 17:55:19 +01:00
|
|
|
|
2009-01-09 20:49:37 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
2009-02-03 17:55:19 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-20 20:58:33 -04:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2009-05-22 23:16:27 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-27 19:35:13 -04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-05-22 23:16:27 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2007-01-27 10:34:55 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2008-02-03 23:03:00 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2008-02-03 23:03:00 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2008-02-03 23:03:00 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2009-03-10 21:09:28 +01:00
|
|
|
|
2009-06-06 18:37:25 +02:00
|
|
|
|
2008-02-03 23:03:00 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2008-11-29 17:44:57 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-07 12:12:44 -05:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2007-03-04 14:45:18 +01:00
|
|
|
|
2008-02-02 15:01:09 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-02-19 21:00:31 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010-07-07 15:36:07 +02:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
firewire: core: add sysfs attribute for easier udev rules
This adds the attribute /sys/bus/firewire/devices/fw[0-9]+/units. It
can be used in udev rules like the following ones:
# IIDC devices: industrial cameras and some webcams
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010?*", GROUP="video"
# AV/C devices: camcorders, set-top boxes, TV sets, audio devices, ...
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", GROUP="video"
Background:
firewire-core manages two device types:
- fw_device is a FireWire node. A character device file is associated
with it.
- fw_unit is a unit directory on a node. Each fw_device may have 0..n
children of type fw_unit. The units tell us what kinds of protocols
a node implements.
We want to set ownership or ACLs or permissions of the character device
file of an fw_device, or/and create symlinks to it, based on available
protocols. Until now udev rules had to look at the fw_unit devices and
then modify their parent's character device file accordingly. This is
problematic for two reasons: 1) It happens sometime after the creation
of the fw_device, 2) an access policy may require that information from
all children is evaluated before a decision about the parent is made.
Problem 1) can ultimately not be avoided since this is the nature of
FireWire nodes: They may add or remove unit directories at any point in
time.
However, we can still help userland a lot by providing the protocol type
information of all units in a summary sysfs attribute directly at the
fw_device. This way,
- the information is immediately available at the affected device
when userspace goes about to handle an ADD or CHANGE event of the
fw_device,
- with most policies, it won't be necessary anymore to dig through
child attributes.
The new attribute is called "units". It contains space-separated tuples
of specifier_id and version of each present unit. The delimiter within
tuples is a colon. Specifier_id and version are printed as 0x%06x.
Here is an example of a node which implements an IPv4 unit and an IPv6
unit: $ cat /sys/bus/firewire/devices/fw2/units
0x00005e:0x000001 0x00005e:0x000002
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-05-23 00:03:29 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-10-30 01:41:56 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
2008-11-29 17:44:57 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2011-03-15 00:08:41 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2009-01-09 20:49:37 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
2007-01-27 10:34:55 +01:00
|
|
|
|
2008-05-24 16:50:22 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009-05-13 21:42:14 +02:00
|
|
|
|
2008-10-05 10:37:11 +02:00
|
|
|
|
2007-03-07 12:12:41 -05:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
2011-03-15 00:08:41 +01:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2009-05-13 21:42:14 +02:00
|
|
|
|
2008-03-24 20:54:28 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2011-03-15 00:08:41 +01:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-01-25 18:57:41 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-03-07 12:12:39 -05:00
|
|
|
|
|
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2007-03-07 12:12:39 -05:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-05-07 20:33:32 -04:00
|
|
|
|
|
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
2007-01-27 10:34:55 +01:00
|
|
|
|
2009-01-17 22:45:54 +01:00
|
|
|
|
2007-03-07 12:12:39 -05:00
|
|
|
|
firewire: core: use non-reentrant workqueue with rescuer
firewire-core manages the following types of work items:
fw_card.br_work:
- resets the bus on a card and possibly sends a PHY packet before that
- does not sleep for long or not at all
- is scheduled via fw_schedule_bus_reset() by
- firewire-ohci's pci_probe method
- firewire-ohci's set_config_rom method, called by kernelspace
protocol drivers and userspace drivers which add/remove
Configuration ROM descriptors
- userspace drivers which use the bus reset ioctl
- itself if the last reset happened less than 2 seconds ago
fw_card.bm_work:
- performs bus management duties
- usually does not (but may in corner cases) sleep for long
- is scheduled via fw_schedule_bm_work() by
- firewire-ohci's self-ID-complete IRQ handler tasklet
- firewire-core's fw_device.work instances whenever the root node
device was (successfully or unsuccessfully) discovered,
refreshed, or rediscovered
- itself in case of resource allocation failures or in order to
obey the 125ms bus manager arbitration interval
fw_device.work:
- performs node probe, update, shutdown, revival, removal; including
kernel driver probe, update, shutdown and bus reset notification to
userspace drivers
- usually sleeps moderately long, in corner cases very long
- is scheduled by
- firewire-ohci's self-ID-complete IRQ handler tasklet via the
core's fw_node_event
- firewire-ohci's pci_remove method via core's fw_destroy_nodes/
fw_node_event
- itself during retries, e.g. while a node is powering up
iso_resource.work:
- accesses registers at the Isochronous Resource Manager node
- usually does not (but may in corner cases) sleep for long
- is scheduled via schedule_iso_resource() by
- the owning userspace driver at addition and removal of the
resource
- firewire-core's fw_device.work instances after bus reset
- itself in case of resource allocation if necessary to obey the
1000ms reallocation period after bus reset
fw_card.br_work instances should not, and instances of the others must
not, be executed in parallel by multiple CPUs -- but were not protected
against that. Hence allocate a non-reentrant workqueue for them.
fw_device.work may be used in the memory reclaim path in case of SBP-2
device updates. Hence we need a workqueue with rescuer and cannot use
system_nrt_wq.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
2010-10-13 13:39:46 +02:00
|
|
|
|
2009-01-24 20:35:38 +01:00
|
|
|
|
2006-12-19 19:58:31 -05:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
