- 11 Feb, 2007 40 commits
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Jeff Dike authored
Comment the use of a mysterious-looking lock. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jeff Dike authored
Tidying the irq code - make a variable static activate_fd can call kmalloc directly since it's now kernel code added a no-locking comment fixed a style violation Signed-off-by:
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Robert P. J. Day authored
Fix apparent typo, where CONFIG_64_BIT should read CONFIG_64BIT. Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Jeff Dike authored
Fix a bunch of style violations in mem.c. Signed-off-by:
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Jeff Dike authored
We shouldn't be using the os wrappers from os code - we can use libc directly. This patch replaces wrapper calls with libc calls. It turns out that os_sigio_async had only one caller, which was in startup.c, so that function is moved there and its name changed. Signed-off-by:
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Jeff Dike authored
Some style fixes in startup.c. Signed-off-by:
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Jeff Dike authored
Add a couple of comments about some non-locked data. Signed-off-by:
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Jeff Dike authored
Locking comments and emacs comment removal in the low-level memory and temp file code. Signed-off-by:
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Jeff Dike authored
Some small locking and formatting fixes in the ubd driver. Signed-off-by:
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Jeff Dike authored
Replace global queue and lock with per-device queues and locks. Mostly a straightforward replacement of ubd_io_lock with dev->lock and ubd_queue with dev->queue. Complications - There was no way to get a request struct (and queue) from the structure sent to the io_thread, so a pointer to the request was added. This is needed in ubd_handler in order to kick do_ubd_request to process another request. Queue initialization is moved from ubd_init to ubd_add. Signed-off-by:
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Jeff Dike authored
CONFIG_HOST_TASK_SIZE doesn't exist any more. Signed-off-by:
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Jeff Dike authored
kstack_depth_to_print can be made const. Signed-off-by:
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Jeff Dike authored
A bunch of the signal handlers can be made static. Signed-off-by:
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Jeff Dike authored
syscall_index and next_syscall_index turn out not to be used. Signed-off-by:
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Jeff Dike authored
It turns out that resource.c isn't needed. Signed-off-by:
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Jeff Dike authored
prev_nsecs and delta need to be arrays, and indexed by CPU number. Signed-off-by:
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Jeff Dike authored
We need to initialize lists properly. Signed-off-by:
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Jeff Dike authored
Fix a bunch of style violations in mem.c and physmem.c Signed-off-by:
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Jeff Dike authored
Comment some lack of locking in the iomem driver. Also, a couple of variables are in the wrong place, so they are moved. Signed-off-by:
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Jeff Dike authored
Eliminate the open_mutex after complaints from Blaisorblade. It turns out that the tty count provides the information needed to tell whether we are the first opener or last closer. Signed-off-by:
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Jeff Dike authored
Remove the last vestiges of devfs from console registration. Change the name of the function, plus remove a couple of unused fields from the line_driver structure. struct lines is no longer needed, all traces of it are gone. The only way that I can see to mark a structure as being almost-const is to individually const the fields. This is the case for the line_driver structure, which has only one modifiable field - a list_head in a sub-structure. Signed-off-by:
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Jeff Dike authored
Whitespace fixes and emacs comment removal. Signed-off-by:
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Jeff Dike authored
The chan_opts structure is mostly const, and needs no locking. Comment the lack of locking on the one field that can change. Make all the other fields const. It turned out that console_open_chan didn't use its chan_opts argument, so that is deleted from the function and its callers. Signed-off-by:
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Jeff Dike authored
Comment the lack of locking. Signed-off-by:
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Jeff Dike authored
A couple of list_head declarations can be improved through the use of LIST_HEAD(). Signed-off-by:
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Jeff Dike authored
Add some missing locking to walks of the transports and opened lists. Delete some dead code. Comment the lack of some locking. Signed-off-by:
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Jeff Dike authored
Kill a compilation warning. Signed-off-by:
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Jeff Dike authored
Whitespace and style fixes. Signed-off-by:
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Jeff Dike authored
Make a couple of variables static. Signed-off-by:
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Jeff Dike authored
Locking fixes. Locking was totally lacking for the mconsole_devices, which got a spin lock, and the unplugged pages data, which got a mutex. The locking of the mconsole console output code was confused. Now, the console_lock (renamed to client_lock) protects the clients list. Signed-off-by:
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Jeff Dike authored
Whitespace and style fixes. Signed-off-by:
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Jeff Dike authored
Comment the lack of locking and make a couple of variables static. Signed-off-by:
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Jeff Dike authored
Whitespace and style fixes. Signed-off-by:
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Jeff Dike authored
Replace BKL use with a spinlock. Also fix the control so that open doesn't return holding a lock. Signed-off-by:
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Jeff Dike authored
Some whitespace and coding style cleanups in the network driver code. Signed-off-by:
Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Jeff Dike authored
The registration of host network transports needed some locking. The transport list itself is locked, but calls to the registration routines are not. This is compensated for by checking that a transport structure is not yet on any list. I also took the opportunity to const all fields in the transport structure except the list, which obviously can be modified. Signed-off-by:
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Jeff Dike authored
Fix (i.e. add some) the locking around the irqs_to_free list. Signed-off-by:
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Jeff Dike authored
Some comment and whitespace cleanups in the console and mconsole code. Signed-off-by:
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Jeff Dike authored
I noticed that errors happening while hotplugging devices from the host were never returned back to the mconsole client. In some cases, success was returned instead of even an information-free error. This patch cleans that up by having the low-level configuration code pass back an error string along with an error code. At the top level, which knows whether it is early boot time or responding to an mconsole request, the string is printk'd or returned to the mconsole client. There are also whitespace and trivial code cleanups in the surrounding code. Signed-off-by:
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Jeff Dike authored
Clean up the console driver locking. There are various problems here, including sleeping under a spinlock and spinlock recursion, some of which are fixed here. This patch deals with the locking involved with opens and closes. The problem is that an mconsole request to change a console's configuration can race with an open. Changing a configuration should only be done when a console isn't opened. Also, an open must be looking at a stable configuration. In addition, a get configuration request must observe the same locking since it must also see a stable configuration. With the old locking, it was possible for this to hang indefinitely in some cases because open would block for a long time waiting for a connection from the host while holding the lock needed by the mconsole request. As explained in the long comment, this is fixed by adding a spinlock for the use count and configuration and a mutex for the actual open and close. Signed-off-by:
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