aboutsummaryrefslogtreecommitdiff
path: root/arch/um/drivers
AgeCommit message (Collapse)AuthorFilesLines
2008-02-23uml: fix helper_wait calls in watchdogJohann Felix Soden1-2/+2
In commit 1aa351a308d2c3ddb92b6cc45083fc54271d0010 ("uml: tidy helper code") the arguments of helper_wait() were changed. The adaptation of harddog_user.c was forgotten, so this errors occur: /arch/um/drivers/harddog_user.c: In function 'start_watchdog': /arch/um/drivers/harddog_user.c:82: error: too many arguments to function 'helper_wait' /arch/um/drivers/harddog_user.c:89: error: too many arguments to function 'helper_wait' Signed-off-by: Johann Felix Soden <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-14Embed a struct path into struct nameidata instead of nd->{dentry,mnt}Jan Blunck1-3/+3
This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on <dentry,vfsmount> pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [[email protected]: coding-style fixes] [[email protected]: fix cifs] [[email protected]: fix smack] Signed-off-by: Jan Blunck <[email protected]> Signed-off-by: Andreas Gruenbacher <[email protected]> Acked-by: Christoph Hellwig <[email protected]> Cc: Al Viro <[email protected]> Cc: Casey Schaufler <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: make mconsole_stack namespace-awareJeff Dike1-17/+18
Also fixed the include syntax while I was there. Signed-off-by: Jeff Dike <[email protected]> Cc: Pavel Emelyanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: port mutex conversionDaniel Walker1-3/+4
The port_sem is already used as a mutex since it's using DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This patch switches it over to a struct mutex. Signed-off-by: Daniel Walker <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: mconsole mutex conversionDaniel Walker1-3/+4
The plug_mem_mutex is already used as a mutex since it's using DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This patch switches it over to a struct mutex. Signed-off-by: Daniel Walker <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: use of a public MAC is a warning, not an errorJeff Dike1-5/+4
Downgrade one of the MAC validity checks. If it's one that could be possibly assigned to a physical NIC, then nothing will break. So, emit a warning in this case, but keep the requested MAC. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: fix infinite mconsole loopKarol Swietlicki1-1/+3
This patch takes care of a problem with the stopping code. The function inside the while condition returns 0 to signify a problem. A problem could be for example a bad command or a bad version of the mconsole client. A bad command would terminate the stopping loop and resume the kernel. This is a problem. A better solution is to make the loop infinite and don't leave it until we are explicitly told to. Signed-off-by: Karol Swietlicki <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: DEBUG_SHIRQ fixesJeff Dike2-4/+12
A couple more DEBUG_SHIRQ fixes. The previous mconsole blocking fix exposed the lack of O_NONBLOCK on the mconsole socket. Also, winch_interrupt started crashing because it is called at irq free time and it tries to dereference tty->driver_data, which has already been set to NULL. I added some error cleanup in mconsole_init while I was there. Cc: "Karol Swietlicki" <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: remove fakehdJeff Dike1-16/+4
The fakehd switch lost its implementation at some point. Since no one is screaming for it, we might as well remove it. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: SMP locking commentaryJeff Dike1-1/+6
Add some more commentary about various pieces of global data not needing locking. Also got rid of unmap_physmem since that is no longer used. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: tidy helper codeJeff Dike3-3/+3
Style fixes to arch/um/os/helper.c and tidying up the breakpoint fix a bit. helper.c gets all the usual style fixes - updated copyright all printks get severities Also - errval changes to err in helper_child fixed an obsolete comment run_helper was killing a child process which is guaranteed to be dead or dying anyway Removed the nohang and pname arguments from helper_wait and fixed the declaration and callers. nohang was used only in the slirp driver and I don't think it was needed. I think pname was a bit of overkill in putting out an error message when something goes wrong. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: fix mconsole stopKarol Swietlicki1-3/+2
Bring back the functionality of stopping user mode linux with the help of mconsole. [jdike - the bug being fixed is that the mconsole file descriptor is already set O_NONBLOCK or not, depending on whether we want no blocking (the normal case) or we want blocking (when an mconsole stop is in effect), so the MSG_DONTWAIT is redundant in the normal case, and wrong when we want to block.] Signed-off-by: Karol Swietlicki <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: remove duplicate config symbol and unused file and variablesKarol Swietlicki1-3/+0
Fix the repetition of the NET symbol. It was once in UML specific options and once in networking. I removed the first occurrence, as it makes more sense to me to keep it only in networking. It also removes a mostly empty file which is not used anymore and some unused variables. Signed-off-by: Karol Swietlicki <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: add missing spaceJoe Perches1-1/+1
Add missing space between merged string constants. Signed-off-by: Joe Perches <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: header untanglingJeff Dike1-0/+1
Untangle UML headers somewhat and add some includes where they were needed explicitly, but gotten accidentally via some other header. arch/um/include/um_uaccess.h loses asm/fixmap.h because it uses no fixmap stuff and gains elf.h, because it needs FIXADDR_USER_*, and archsetjmp.h, because it needs jmp_buf. pmd_alloc_one is uninlined because it needs mm_struct, and that's inconvenient to provide in asm-um/pgtable-3level.h. elf_core_copy_fpregs is also uninlined from elf-i386.h and elf-x86_64.h, which duplicated the code anyway, to arch/um/kernel/process.c, so that the reference to current_thread doesn't pull sched.h or anything related into asm/elf.h. arch/um/sys-i386/ldt.c, arch/um/kernel/tlb.c and arch/um/kernel/skas/uaccess.c got sched.h because they dereference task_structs. Its includes of linux and asm headers got turned from "" to <>. arch/um/sys-i386/bug.c gets asm/errno.h because it needs errno constants. asm/elf-i386 gets asm/user.h because it needs user_regs_struct. asm/fixmap.h gets page.h because it needs PAGE_SIZE and PAGE_MASK and system.h for BUG_ON. asm/pgtable doesn't need sched.h. asm/processor-generic.h defined mm_segment_t, but didn't use it. So, that definition is moved to uaccess.h, which defines a bunch of mm_segment_t-related stuff. thread_info.h uses mm_segment_t, and includes uaccess.h, which causes a recursion. So, the definition is placed above the include of thread_info. in uaccess.h. thread_info.h also gets page.h because it needs PAGE_SIZE. ObCheckpatchViolationJustification - I'm not adding a typedef; I'm moving mm_segment_t from one place to another. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: reconst a parameterJeff Dike1-1/+1
The previous const-ing patch consted a string which shouldn't have been, and I didn't notice the gcc warning. ubd_setup can't take a const char * because its address is assigned to something which expects a char *arg. Many setups modify the string they are given, they can't be const. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: tidy kern_util.hJeff Dike5-3/+2
Tidy kern_util.h. It turns out that most of the function declarations aren't used, so they can go away. os.h no longer includes kern_util.h, so files which got it through os.h now need to include it directly. A number of other files never needed it, so these includes are deleted. The structure which was used to pass signal handlers from the kernel side to the userspace side is gone. Instead, the handlers are declared here, and used directly from libc code. This allows arch/um/os-Linux/trap.c to be deleted, with its remnants being moved to arch/um/os-Linux/skas/trap.c. arch/um/os-Linux/tty.c had its inclusions changed, and it needed some style attention, so it got tidied. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: console driver cleanupsJeff Dike1-17/+2
Console driver cleanups - Changed an instance of foo = bar + foo to foo += bar Removed checks of tty->stopped - I don't think the low-level driver has any business looking at that Removed an annoying warning Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: const and other tidyingWANG Cong1-3/+3
This patch also does some improvements for uml code. Improvements include dropping unnecessary cast, killing some unnecessary code and still some constifying for pointers etc.. Signed-off-by: WANG Cong <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-05uml: document new ubd flagJeff Dike1-1/+4
The ubd help message didn't document the 'c' flag. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-01-28blk_end_request: changing um (take 4)Kiyoshi Ueda1-12/+4
This patch converts um to use blk_end_request interfaces. Related 'uptodate' arguments are converted to 'error'. As a result, the interface of internal function, ubd_end_request(), is changed. Cc: Jeff Dike <[email protected]> Signed-off-by: Kiyoshi Ueda <[email protected]> Signed-off-by: Jun'ichi Nomura <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2007-12-23uml: user of helper_wait() got missed when it got extra argumentsAl Viro1-2/+2
Signed-off-by: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-12-17uml: stop gdb from deleting breakpoints when running UMLStanislaw Gruszka4-25/+7
Sometimes when UML is debugged gdb miss breakpoints. When process traced by gdb do fork, debugger remove breakpoints from child address space. There is possibility to trace more than one fork, but this not work with UML, I guess (only guess) there is a deadlock - gdb waits for UML and UML waits for gdb. When clone() is called with SIGCHLD and CLONE_VM flags, gdb see this as PTRACE_EVENT_FORK not as PTRACE_EVENT_CLONE and remove breakpoints from child and at the same time from traced process, because either have the same address space. Maybe it is possible to do fix in gdb, but I'm not sure if there is easy way to find out if traced and child processes share memory. So I do fix for UML, it simply do not call clone() with both SIGCHLD and CLONE_VM flags together. Additionally __WALL flag is used for waitpid() to assure not miss clone and normal process events. [ jdike - checkpatch fixes ] Signed-off-by: Stanislaw Gruszka <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-12-11[UM]: Fix use of skb after netif_rxJulia Lawall1-1/+1
Recently, Wang Chen submitted a patch (d30f53aeb31d453a5230f526bea592af07944564) to move a call to netif_rx(skb) after a subsequent reference to skb, because netif_rx may call kfree_skb on its argument. The same problem occurs in some other drivers as well. This was found using the following semantic match. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression skb, e,e1; @@ ( netif_rx(skb); | netif_rx_ni(skb); ) ... when != skb = e ( skb = e1 | * skb ) // </smpl> Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-12-03uml: work around host tcsetattr bugJeff Dike1-1/+10
Under the conditions that UML uses it, tcgetattr is guaranteed to return -EINTR when the console is attached to /dev/ptmx, making generic_console_write hang because it loops, calling tcgetattr until it succeeds. This is a host bug - see http://marc.info/?l=linux-kernel&m=119618990807182&w=2 for the details. This patch works around it by blocking SIGIO while the terminal attributes are being fiddled. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-11-29leak in do_ubd_requestMiklos Szeredi1-0/+1
Signed-off-by: Miklos Szeredi <[email protected]> Cc: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-11-14uml: fix build for !CONFIG_TCPJeff Dike1-2/+12
Make UML build in the absence of CONFIG_INET by making the inetaddr_notifier registration depend on it. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-11-05uml: fix incompatible types warning in previous SG fixWANG Cong1-1/+1
Fix an incompatible-pointer warning. Signed-off-by: WANG Cong <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Cc: Jens Axboe <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-24arch/um/drivers/ubd_kern.c: fix a building errorWANG Cong1-0/+2
Fix this uml building error: arch/um/drivers/ubd_kern.c: In function 'do_ubd_request': arch/um/drivers/ubd_kern.c:1118: error: implicit declaration of function 'sg_page' arch/um/drivers/ubd_kern.c:1118: warning: passing argument 6 of 'prepare_request' makes pointer from integer without a cast make[1]: *** [arch/um/drivers/ubd_kern.o] Error 1 make: *** [arch/um/drivers] Error 2 Signed-off-by: WANG Cong <[email protected]> Add sg_init_table() call as well. Signed-off-by: Jens Axboe <[email protected]>
2007-10-22[SG] Update drivers to use sg helpersJens Axboe1-1/+1
Signed-off-by: Jens Axboe <[email protected]>
2007-10-20spelling fixes: arch/um/Simon Arlott3-3/+3
Spelling fixes in arch/um/. Signed-off-by: Simon Arlott <[email protected]> Acked-by: Jeff Dike <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2007-10-17[UMP]: header_ops conversion needed for non-ethernet driversJeff Dike2-6/+2
UML's two non-ethernet drivers need some header_ops conversion. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2007-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds1-1/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits) kbuild: introduce ccflags-y, asflags-y and ldflags-y kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP kbuild: enable use of AFLAGS and CFLAGS on commandline kbuild: enable 'make AFLAGS=...' to add additional options to AS kbuild: fix AFLAGS use in h8300 and m68knommu kbuild: check for wrong use of CFLAGS kbuild: enable 'make CFLAGS=...' to add additional options to CC kbuild: fix up CFLAGS usage kbuild: make modpost detect unterminated device id lists kbuild: call export_report from the Makefile kbuild: move Kai Germaschewski to CREDITS kconfig/menuconfig: distinguish between selected-by-another options and comments kconfig: tristate choices with mixed tristate and boolean values include/linux/Kbuild: remove duplicate entries kbuild: kill backward compatibility checks kbuild: kill EXTRA_ARFLAGS kbuild: fix documentation in makefiles.txt kbuild: call make once for all targets when O=.. is used kbuild: pass -g to assembler under CONFIG_DEBUG_INFO kbuild: update _shipped files for kconfig syntax cleanup ... Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.
2007-10-16uml: arch/um/drivers formattingJeff Dike9-253/+244
Style fixes for the rest of the drivers. arch/um/drivers should be pretty CodingStyle-compliant now. Except for the ubd driver, which will have to be treated separately. [[email protected]: coding-style fixes] Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: correctly handle skb allocation failuresJeff Dike1-0/+47
Handle memory allocation failures when reading packets. We have to read something from the host, even if we can't allocate any memory. If we don't, the host side of the device may fill up and stop delivering interrupts because no new packets can be queued. A single sk_buff is allocated whenever an MTU is seen which is larger than any seen earlier. This is used to read packets if there is a memory allocation failure. The large MTU check is done from eth_configure, which is called when a interface is added to the system. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: network driver MTU cleanupsJeff Dike13-133/+53
A bunch of MTU-related cleanups in the network code. First, there is the addition of the notion of a maximally-sized packet, which is the MTU plus headers. This is used to size the skb that will receive a packet. This allows ether_adjust_skb to go away, as it was used to resize the skb after it was allocated. Since the skb passed into the low-level read routine is no longer resized, and possibly reallocated, there, they (and the write routines) don't need to get an sk_buff **. They just need the sk_buff * now. The callers of ether_adjust_skb still need to do the skb_put, so that's now inlined. The MAX_PACKET definitions in most of the drivers are gone. The set_mtu methods were all the same and did nothing, so they can be removed. The ethertap driver had a typo which doubled the size of the packet rather than adding two bytes to it. It also wasn't defining its setup_size, causing a zero-byte kmalloc and crash when the invalid pointer returned from kmalloc was dereferenced. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: network formattingJeff Dike16-479/+479
Style and other non-functional changes in the UML networking code, including include tidying style violations copyright updates printks getting severities userspace code calling libc directly rather than using the os_* wrappers There's also a exit path cleanup in the pcap driver. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: more idiomatic parameter parsingJeff Dike1-2/+2
Make mconsole parameter parsing slightly more idiomatic. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: remove unneeded void * castJesper Juhl1-1/+1
vmalloc() returns a void pointer, so casting to (void *) is pretty pointless. Signed-off-by: Jesper Juhl <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: sysrq and mconsole fixesJeff Dike1-14/+9
Fix the passing of printk output back to the mconsole client. The existing code was somewhat confused, accumulating output in a buffer, but writing it out entirely whenever a new chunk was added. This is fixed. The earlier include cleanups caused linux/sysrq.h to not be included - this is fixed by adding the include back, under CONFIG_MAGIC_SYSRQ. CONFIG_MAGIC_SYSRQ is also defaulted to on in defconfig. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: remove os_* usage from userspace filesJeff Dike2-43/+48
This patch fixes some userspace files which were calling libc through the os_* wrappers. It turns out that there was only one user of os_new_tty_pgrp, so it can be deleted. There are also some style and whitespace fixes in here. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: remove code made redundant by CHOOSE_MODE removalJeff Dike1-1/+0
This patch makes a number of simplifications enabled by the removal of CHOOSE_MODE. There were lots of functions that looked like int foo(args){ foo_skas(args); } The bodies of foo_skas are now folded into foo, and their declarations (and sometimes entire header files) are deleted. In addition, the union uml_pt_regs, which was a union between the tt and skas register formats, is now a struct, with the tt-mode arm of the union being removed. It turns out that usr2_handler was unused, so it is gone. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: style fixes pass 2Jeff Dike1-123/+127
Formatting changes in the files which have been changed in the course of removing CHOOSE_MODE. These include: copyright updates header file trimming style fixes adding severity to printks These changes should be entirely non-functional. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: throw out CHOOSE_MODEJeff Dike3-5/+2
The next stage after removing code which depends on CONFIG_MODE_TT is removing the CHOOSE_MODE abstraction, which provided both compile-time and run-time branching to either tt-mode or skas-mode code. This patch removes choose-mode.h and all inclusions of it, and replaces all CHOOSE_MODE invocations with the skas branch. This leaves a number of trivial functions which will be dealt with in a later patch. There are some changes in the uaccess and tls support which go somewhat beyond this and eliminate some of the now-redundant functions. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: throw out CONFIG_MODE_TTJeff Dike1-14/+1
This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: add VDE networking supportJeff Dike4-2/+313
Added vde network backend in uml to introduce native Virtual Distributed Ethernet support (using libvdeplug). Signed-off-by: Luca Bigliardi <[email protected]> Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: fix nonremovability of watchdogJeff Dike1-1/+1
The UML watchdog driver was using the wrong config variable to control whether it can be unloaded once active. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: console tidyingJeff Dike1-114/+114
Tidy line.c: The includes are more minimal Lots of style fixes All the printks have severities Removed some commented-out code Deleted a useless printk when ioctl is called Fixed some whitespace damage Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: fix console writing bugsJeff Dike3-7/+16
The previous console cleanup patch switched generic_read and generic_write from calling os_{read,write}_file to calling read and write directly. Because the calling convention is different, they now need to get any error from errno rather than the return value. I did this for generic_read, but forgot about generic_write. While chasing some output corruption, I noticed that line_write was unnecessarily calling flush_buffer, and deleted it. I don't understand why, but the corruption disappeared. This is unneeded because there already is a perfectly good mechanism for finding out when the host output device has some room to write data - there is an interrupt that comes in when writes can happen again. line_write calling flush_buffer seemed to just be an attempt to opportunistically get some data out to the host. I also made write_chan short-circuit calling into the host-level code for zero-length writes. Calling libc write with a length of zero conflated write not being able to write anything with asking it not to write anything. Better to just cut it off as soon as possible. Signed-off-by: Jeff Dike <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-16uml: console subsystem tidyingJeff Dike9-299/+296
This does a lot of cleanup on the UML console system. This patch should be entirely non-functional. The tidying is as follows: header cleanups - the includes should be closer to minimal and complete all printks now have a severity lots of style fixes fd_close is restructured a little in order to reduce the nesting some functions were calling the os_* wrappers when they can call libc directly port_accept had a unnecessary variable it also tested a pid unecessarily before killing it some functions were made static xterm_free is gone, as it was identical to generic_free Signed-off-by: Jeff Dike <[email protected]> Cc: Paolo 'Blaisorblade' Giarrusso <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>