- 07 May, 2007 40 commits
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Jeff Dike authored
kernel_thread() should just return an error value on do_fork failure, not panic. Signed-off-by:
Jeff Dike <jdike@linux.intel.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
userspace code used to have to call the kernelspace function page_size() in order to determine the value of the kernel's PAGE_SIZE. Since this is now available directly from kern_constants.h as UM_KERN_PAGE_SIZE, page_size() can be deleted and calls changed to use the constant. Signed-off-by:
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Jeff Dike authored
Clean up arch/um/kernel/process.c: - lots of return(x); -> return x; conversions - a number of the small functions are either unused, in which case they are gone, along any declarations in a header, or could be made static. - current_pid is ifdefed on CONFIG_MODE_TT and its declaration is ifdefed on both CONFIG_MODE_TT and UML_CONFIG_MODE_TT because we don't know whether it's being used in a userspace or kernel file. Signed-off-by:
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Jeff Dike authored
Comment the lack of locking on a couple of globals. Also fix the formatting of __setup_host_supports_tls. Signed-off-by:
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Jeff Dike authored
flush_thread doesn't need to do a full page table walk in order to clear the address space. It knows what the end result needs to be, so it can call unmap directly. This results in a 10-20% speedup in an exec from bash. Signed-off-by:
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Davide Brini authored
Calls lines_init() *after* xterm_title is modified to include umid. Signed-off-by:
Davide Brini <davide.brini@unibo.it> Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
To look at users I did: $ find arch/um/ include/asm-um -name '*.[ch]'|xargs grep -r 'net_kern\.h' +-l|xargs grep '\<user\>' Most users just cast user to the appropriate pointer, the remaining ones are fixed here. In net_kern.c, I'm almost sure that save trick is not needed anymore, but I've not verified it. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Avoid using the temporary buffer introduced by previous patch to hold the device name. Btw, avoid leaking device on an error path. Other error paths may need cleanup. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Improve checking and diagnostics for broadcast and multicast Ethernet MAC addresses, and distinguish between those cases in output; also make sure the device is assigned a MAC address valid only locally to avoid collisions. Signed-off-by:
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Robert P. J. Day authored
Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Acked-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Jeff Dike authored
The build started finding calls from non-init to init functions. These are just cases of init functions not being properly marked, so this patch fixes that. Signed-off-by:
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Jeff Dike authored
user_util.h isn't needed any more, so delete it and remove all includes of it. Signed-off-by:
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Jeff Dike authored
Rescue the useful contents of the soon-to-be-gone user-util.h. pty.c now gets ptsname from stdlib.h like it should have always done. CATCH_EINTR is now in os.h, although perhaps all usage should be under os-Linux at some point. get_pty is also in os.h. This patch restores the old definition of ARRAY_SIZE in user.h. This file is included only in userspace files, so there will be no conflict with the kernel's new ARRAY_SIZE. The copy of the kernel's ARRAY_SIZE and associated infrastructure is now gone. Signed-off-by:
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Jeff Dike authored
This patch moves all the the symbols defined in um_arch.c, which are mostly boundaries between different parts of the UML kernel address space, to a new header, as-layout.h. There are also a few things here which aren't really related to address space layout, but which don't really have a better place to go. Signed-off-by:
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Jeff Dike authored
This patch moves the declarations of the architecture hooks from user_util.h to a new header, arch.c, and adds the necessary includes to files which need those declarations. Signed-off-by:
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Jeff Dike authored
This patch narrows the sigio interface. The boot-time SIGIO testing used to be in start_up.c, which meant that pty_output_sigio and pty_close_sigio needed to be global. By moving that code here, those can become static and the declarations moved from user_util.h. os_check_bugs is also here because it only does the SIGIO checking. If it does more, it'll probably move back to start_up.c. Signed-off-by:
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Rusty Russell authored
We can use a gcc extension to ensure that ARRAY_SIZE() is handed an array, not a pointer. This is especially important when code is changed from a fixed array to a pointer. I assume the Intel compiler doesn't support __builtin_types_compatible_p. [jdike@addtoit.com: uml: update UML definition of ARRAY_SIZE] Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Jeff Dike authored
This fixes a number of problems associated with network interface hotplug. The userspace initialization function can fail in some cases, but the failure was never passed back to eth_configure, which proceeded with the configuration. This results in a zombie device that is present, but can't work. This is fixed by allowing the initialization routines to return an error, which is checked, and the configuration aborted on failure. eth_configure failed to check for many failures. Even when it did check, it didn't undo whatever initializations has already happened, so a present, but partially initialized and non-working device could result. It now checks everything that can fail, and bails out, undoing whatever had been done. The return value of eth_configure was always ignored, so it is now just void. Signed-off-by:
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Andrew Morton authored
Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Jeff Dike authored
Fix a bunch of formatting violations in the drivers: return(n) -> return n whitespace fixes emacs formatting comment removal breaking if(foo) return(n) into two lines There are also a couple of errno use bugs: using errno in a printk when the failure put errno into a local variable saving errno after a printk, which can change it Signed-off-by:
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Jeff Dike authored
If a disk fails to open, i.e. its host file doesn't exist, it won't be removable because the hot-unplug code checks the existence of its gendisk. This won't exist because it is only allocated for successfully opened disks. Thus, a typo on the command line can result in a unusable and unfixable disk. This is fixed by freeing the gendisk if it's there, but not letting that affect the removal. Signed-off-by:
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Jeff Dike authored
Print out core dump limits at boot time. This is to allow core dumps to be collected if something goes very wrong and to tell if a core dump isn't going to happen because of a resource limit. Signed-off-by:
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Jeff Dike authored
Mark some tt-mode-only code as such. Also cleaned up some formatting. Signed-off-by:
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Jeff Dike authored
Move the host_info string from util.c to um_arch.c, where it is actually initialized and used. Also document its lack of locking. Signed-off-by:
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Jeff Dike authored
Formatting fixes - style violations whitespace breakage emacs formatting comment removal Signed-off-by:
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Jeff Dike authored
Get rid of a bunch of unused stuff - cpu_feature had no users linux_prog is little-used, so its declaration is moved to the user for easy deletion when the whole file goes away a long-unused debugging aid in helper.c is gone Signed-off-by:
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Robert P. J. Day authored
Remove conditionals and code related to checking for a pre-2.2 kernel. Signed-off-by:
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Cyrill Gorcunov authored
Add checking for allocated memory. Indents and spaces are added to be familiar with the kernel coding style. Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Acked-by:
Mikael Starvik <starvik@axis.com> Signed-off-by:
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Robert P. J. Day authored
Signed-off-by:
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Milind Arun Choudhary authored
SPIN_LOCK_UNLOCKED cleanup,use __SPIN_LOCK_UNLOCKED instead Signed-off-by:
Milind Arun Choudhary <milindchoudhary@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Robert P. J. Day authored
Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Rafael J. Wysocki authored
Move the definition of PAGES_FOR_IO to kernel/power/power.h and introduce SPARE_PAGES representing the number of pages that should be freed by the swsusp's memory shrinker in addition to PAGES_FOR_IO so that device drivers can allocate some memory (up to 1 MB total) in their .suspend() routines without causing the suspend to fail. Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Signed-off-by:
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Rafael J. Wysocki authored
Remove the leftover enable_nonboot_cpus() from snapshot_release(). Signed-off-by:
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David Brownell authored
Clarify that "software suspend" is what's called "hibernation" in most user interfaces, shrinking a terminology gap. (Examples include Gnome and MS-Windows.) Also provide a more succinct description of what it does, so you won't have to read the whole novel in Kconfig; and highlights just why the lack of BIOS requirements for swsusp are a big deal. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Acked-by:
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Johannes Berg authored
Change /sys/power/disk to display all valid modes as well as the currently selected one in a fashion known from the LED subsystem. This changes userspace API, but it is apparently not used much (we asked some userspace developers) Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Acked-by:
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Johannes Berg authored
Remove software_suspend() and all its users since pm_suspend(PM_SUSPEND_DISK) should be equivalent and there's no point in having two interfaces for the same thing. The patch also changes the valid_state function to return 0 (false) for PM_SUSPEND_DISK when SOFTWARE_SUSPEND is not configured instead of accepting it and having the whole thing fail later. Signed-off-by:
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Rafael J. Wysocki authored
Currently we can miss freeze_process()->signal_wake_up() in kswapd() if it happens between try_to_freeze() and prepare_to_wait(). To prevent this from happening we should check freezing(current) before calling schedule(). Signed-off-by:
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Rafael J. Wysocki authored
Make swsusp use extents instead of a bitmap to trace swap pages allocated for saving the image (the tracking is only needed in case there's an error, so that the allocated swap pages can be released). This should allow us to reduce the memory usage, practically always, and improve performance. Signed-off-by:
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Rafael J. Wysocki authored
Make handle_initrd() call try_to_freeze() in a suitable place instead of setting PF_NOFREEZE for the current task. Signed-off-by:
Nigel Cunningham <nigel@nigel.suspend2.net> Acked-by:
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Rafael J. Wysocki authored
Make swsusp call create_basic_memory_bitmaps() before processes are frozen, so that GFP_KERNEL allocations can be made in it. Additionally, ensure that the swsusp's userland interface won't be used while either pm_suspend_disk() or software_resume() is being executed. Signed-off-by:
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