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2009-09-27const: mark struct vm_struct_operationsAlexey Dobriyan
* mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-21trivial: fix typo "to to" in multiple filesAnand Gadiyar
Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-27generic compat_sys_ustatChristoph Hellwig
Due to a different size of ino_t ustat needs a compat handler, but currently only x86 and mips provide one. Add a generic compat_sys_ustat and switch all architectures over to it. Instead of doing various user copy hacks compat_sys_ustat just reimplements sys_ustat as it's trivial. This was suggested by Arnd Bergmann. Found by Eric Sandeen when running xfstests/017 on ppc64, which causes stack smashing warnings on RHEL/Fedora due to the too large amount of data writen by the syscall. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-01-14[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2Heiko Carstens
Remove __attribute__((weak)) from common code sys_pipe implemantation. IA64, ALPHA, SUPERH (32bit) and SPARC (32bit) have own implemantations with the same name. Just rename them. For sys_pipe2 there is no architecture specific implementation. Cc: Richard Henderson <rth@twiddle.net> Cc: David S. Miller <davem@davemloft.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-11-13CRED: Wrap current->cred and a few other accessorsDavid Howells
Wrap current->cred and a few other accessors to hide their actual implementation. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2008-11-13CRED: Separate task security context from task_structDavid Howells
Separate the task security context from task_struct. At this point, the security data is temporarily embedded in the task_struct with two pointers pointing to it. Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in entry.S via asm-offsets. With comment fixes Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2008-10-23Merge branch 'x86/um-header' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits) x86: canonicalize remaining header guards x86: drop double underscores from header guards x86: Fix ASM_X86__ header guards x86, um: get rid of uml-config.h x86, um: get rid of arch/um/Kconfig.arch x86, um: get rid of arch/um/os symlink x86, um: get rid of excessive includes of uml-config.h x86, um: get rid of header symlinks x86, um: merge Kconfig.i386 and Kconfig.x86_64 x86, um: get rid of sysdep symlink x86, um: trim the junk from uml ptrace-*.h x86, um: take vm-flags.h to sysdep x86, um: get rid of uml asm/arch x86, um: get rid of uml highmem.h x86, um: get rid of uml unistd.h x86, um: get rid of system.h -> system.h include x86, um: uml atomic.h is not needed anymore x86, um: untangle uml ldt.h x86, um: get rid of more uml asm/arch uses x86, um: remove dead header (uml module-generic.h; never used these days) ...
2008-10-23x86, um: ... and asm-x86 moveAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-17Pull utrace into release branchTony Luck
2008-10-17[IA64] kill sys32_pipeChristoph Hellwig
It's just a duplicate of the generic sys_pipe that still lacks the recently added error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-10-17[IA64] remove sys32_pauseChristoph Hellwig
It's just a duplicate of the native sys_pause, which we can use after defining __ARCH_WANT_SYS_PAUSE. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-10-16Merge branch 'personality' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'personality' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY
2008-10-16compat: generic compat get/settimeofdayChristoph Hellwig
Nothing arch specific in get/settimeofday. The details of the timeval conversion varied a little from arch to arch, but all with the same results. Also add an extern declaration for sys_tz to linux/time.h because externs in .c files are fowned upon. I'll kill the externs in various other files in a sparate patch. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: David S. Miller <davem@davemloft.net> [ sparc bits ] Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16compat: move cp_compat_stat to common codeChristoph Hellwig
struct stat / compat_stat is the same on all architectures, so cp_compat_stat should be, too. Turns out it is, except that various architectures have slightly and some high2lowuid/high2lowgid or the direct assignment instead of the SET_UID/SET_GID that expands to the correct one anyway. This patch replaces the arch-specific cp_compat_stat implementations with a common one based on the x86-64 one. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: David S. Miller <davem@davemloft.net> [ sparc bits ] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [ parisc bits ] Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16[PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITYMartin Schwidefsky
The SET_PERSONALITY macro is always called with a second argument of 0. Remove the ibcs argument and the various tests to set the PER_SVR4 personality. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-06[IA64] utrace Convert compat ptrace to use compat_sys_ptraceShaohua Li
Convert IA64 32-bit ptrace to use compat_sys_ptrace. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-10-06[IA64] utrace use generic trace hookShaohua Li
Make IA64 use generic trace hook in some paths. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-08-18[IA64] use generic compat_old_sys_readdirChristoph Hellwig
Switch ia64 to the generic compat_sys_old_readdir which is identical except for slightly better error handling. Also remove sys32_getdents which already isn't wired up to the syscall table anymore in favour of compat_sys_getdents. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-07-24flag parameters: pipeUlrich Drepper
This patch introduces the new syscall pipe2 which is like pipe but it also takes an additional parameter which takes a flag value. This patch implements the handling of O_CLOEXEC for the flag. I did not add support for the new syscall for the architectures which have a special sys_pipe implementation. I think the maintainers of those archs have the chance to go with the unified implementation but that's up to them. The implementation introduces do_pipe_flags. I did that instead of changing all callers of do_pipe because some of the callers are written in assembler. I would probably screw up changing the assembly code. To avoid breaking code do_pipe is now a small wrapper around do_pipe_flags. Once all callers are changed over to do_pipe_flags the old do_pipe function can be removed. The following test must be adjusted for architectures other than x86 and x86-64 and in case the syscall numbers changed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <sys/syscall.h> #ifndef __NR_pipe2 # ifdef __x86_64__ # define __NR_pipe2 293 # elif defined __i386__ # define __NR_pipe2 331 # else # error "need __NR_pipe2" # endif #endif int main (void) { int fd[2]; if (syscall (__NR_pipe2, fd, 0) != 0) { puts ("pipe2(0) failed"); return 1; } for (int i = 0; i < 2; ++i) { int coe = fcntl (fd[i], F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if (coe & FD_CLOEXEC) { printf ("pipe2(0) set close-on-exit for fd[%d]\n", i); return 1; } } close (fd[0]); close (fd[1]); if (syscall (__NR_pipe2, fd, O_CLOEXEC) != 0) { puts ("pipe2(O_CLOEXEC) failed"); return 1; } for (int i = 0; i < 2; ++i) { int coe = fcntl (fd[i], F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if ((coe & FD_CLOEXEC) == 0) { printf ("pipe2(O_CLOEXEC) does not set close-on-exit for fd[%d]\n", i); return 1; } } close (fd[0]); close (fd[1]); puts ("OK"); return 0; } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Ulrich Drepper <drepper@redhat.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-15[IA64] fix personality(PER_LINUX32) performance issueHuang, Xiaolan
The patch aims to fix a performance issue for the syscall personality(PER_LINUX32). On IA-64 box, the syscall personality (PER_LINUX32) has poor performance because it failed to find the Linux/x86 execution domain. Then it tried to load the kernel module however it failed always and it used the default execution domain PER_LINUX instead. Requesting kernel modules is very expensive. It caused the performance issue. (see the function lookup_exec_domain in kernel/exec_domain.c). To resolve the issue, execution domain Linux/x86 is always registered in initialization time for IA-64 architecture. Signed-off-by: Xiaolan Huang <xiaolan.huang@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-01[IA64] TS_RESTORE_SIGMASKRoland McGrath
Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-17Pull regset into release branchTony Luck
2008-04-17Pull virt-cpu-accounting into release branchTony Luck
2008-03-12[IA64] regset: 32-bit supportShaohua Li
This is the 32-bit regset implementation under IA64. Basically register read/write, which is derived from current ptrace register read/write. This version added TLS support. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06[IA64] remove unnecessary nfs includes from sys_ia32.cKOSAKI Motohiro
Compilation of 2.6.25-rc2-mm1 on ia64 generates many warnings. IA64 support 2 ELF format (IA64 binary and IA32 binary), thus if 2 elf related header included, cause many warning or error. about 2 week ago, J. Bruce Fields proposed this problem fixed patch. (http://marc.info/?l=linux-ia64&m=120329313305695&w=2) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04[IA64] signal(ia64_ia32): add a signal stack overflow checkShi Weihua
The similar check has been added to x86_32(i386) in commit id 83bd01024b1fdfc41d9b758e5669e80fca72df66. So we add this check to ia64_ia32 and improve it a liitle bit in that we need to check for stack overflow only when the signal is on stack. Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-02-20[IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting)Hidetoshi Seto
This patch implements VIRT_CPU_ACCOUNTING for ia64, which enable us to use more accurate cpu time accounting. The VIRT_CPU_ACCOUNTING is an item of kernel config, which s390 and powerpc arch have. By turning this config on, these archs change the mechanism of cpu time accounting from tick-sampling based one to state-transition based one. The state-transition based accounting is done by checking time (cycle counter in processor) at every state-transition point, such as entrance/exit of kernel, interrupt, softirq etc. The difference between point to point is the actual time consumed during in the state. There is no doubt about that this value is more accurate than that of tick-sampling based accounting. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-02-05[IA64] honor notify_die() returning NOTIFY_STOPJan Beulich
This requires making die() and die_if_kernel() return a value, and their callers to honor this (and be prepared that it returns). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-01-30x86: PIE executable randomization, checkpatch fixesAndrew Morton
#39: FILE: arch/ia64/ia32/binfmt_elf32.c:229: +elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type, unsigned long unused) WARNING: no space between function name and open parenthesis '(' #39: FILE: arch/ia64/ia32/binfmt_elf32.c:229: +elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type, unsigned long unused) WARNING: line over 80 characters #67: FILE: arch/x86/kernel/sys_x86_64.c:80: + new_begin = randomize_range(*begin, *begin + 0x02000000, 0); ERROR: use tabs not spaces #110: FILE: arch/x86/kernel/sys_x86_64.c:185: + ^I mm->cached_hole_size = 0;$ ERROR: use tabs not spaces #111: FILE: arch/x86/kernel/sys_x86_64.c:186: + ^I^Imm->free_area_cache = mm->mmap_base;$ ERROR: use tabs not spaces #112: FILE: arch/x86/kernel/sys_x86_64.c:187: + ^I}$ ERROR: use tabs not spaces #141: FILE: arch/x86/kernel/sys_x86_64.c:216: + ^I^I/* remember the largest hole we saw so far */$ ERROR: use tabs not spaces #142: FILE: arch/x86/kernel/sys_x86_64.c:217: + ^I^Iif (addr + mm->cached_hole_size < vma->vm_start)$ ERROR: use tabs not spaces #143: FILE: arch/x86/kernel/sys_x86_64.c:218: + ^I^I mm->cached_hole_size = vma->vm_start - addr;$ ERROR: use tabs not spaces #157: FILE: arch/x86/kernel/sys_x86_64.c:232: + ^Imm->free_area_cache = TASK_UNMAPPED_BASE;$ ERROR: need a space before the open parenthesis '(' #291: FILE: arch/x86/mm/mmap_64.c:101: + } else if(mmap_is_legacy()) { WARNING: braces {} are not necessary for single statement blocks #302: FILE: arch/x86/mm/mmap_64.c:112: + if (current->flags & PF_RANDOMIZE) { + mm->mmap_base += ((long)rnd) << PAGE_SHIFT; + } WARNING: line over 80 characters #314: FILE: fs/binfmt_elf.c:48: +static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); WARNING: no space between function name and open parenthesis '(' #314: FILE: fs/binfmt_elf.c:48: +static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); WARNING: line over 80 characters #429: FILE: fs/binfmt_elf.c:438: + eppnt, elf_prot, elf_type, total_size); ERROR: need space after that ',' (ctx:VxV) #480: FILE: fs/binfmt_elf.c:939: + elf_prot, elf_flags,0); ^ total: 9 errors, 7 warnings, 461 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: PIE executable randomizationJiri Kosina
main executable of (specially compiled/linked -pie/-fpie) ET_DYN binaries onto a random address (in cases in which mmap() is allowed to perform a randomization). The code has been extraced from Ingo's exec-shield patch http://people.redhat.com/mingo/exec-shield/ [akpm@linux-foundation.org: fix used-uninitialsied warning] [kamezawa.hiroyu@jp.fujitsu.com: fixed ia32 ELF on x86_64 handling] Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-12-19[IA64] ia32 nopageNick Piggin
Convert ia64's ia32 support from nopage to fault. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-11-06[IA64] Remove duplicate includes from ia32priv.hLucas Woods
Don't need asm/processor.h twice Signed-off-by: Lucas Woods <woodzy@gmail.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-10-19Use helpers to obtain task pid in printks (arch code)Alexey Dobriyan
One of the easiest things to isolate is the pid printed in kernel log. There was a patch, that made this for arch-independent code, this one makes so for arch/xxx files. It took some time to cross-compile it, but hopefully these are all the printks in arch code. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Make unregister_binfmt() return voidAlexey Dobriyan
list_del() hardly can fail, so checking for return value is pointless (and current code always return 0). Nobody really cared that return value anyway. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17x86: replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE #defineMark Nelson
Replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE in the coredump code which allows for more flexibility in the note type for the state of 'extended floating point' implementations in coredumps. New note types can now be added with an appropriate #define. This does #define ELF_CORE_XFPREG_TYPE to be NT_PRXFPREG in all current users so there's are no change in behaviour. This will let us use different note types on powerpc for the Altivec/VMX state that some PowerPC cpus have (G4, PPC970, POWER6) and for the SPE (signal processing extension) state that some embedded PowerPC cpus from Freescale have. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-11i386/x86_64: move headers to include/asm-x86Thomas Gleixner
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-30[IA64] Remove a few duplicate includesJesper Juhl
This patch removes a few duplicate includes from arch/ia64/ Acked-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-25[IA64] rename partial_pageakpm@linux-foundation.org
Jens has added a partial_page thing in splice whcih conflicts with the ia64 one. Rename ia64 out of the way. (ia64 chose poorly). Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-07-22revert "PIE randomization"Andrew Morton
There are reports of this causing userspace failures (http://lkml.org/lkml/2007/7/20/421). Revert. Cc: Jan Kratochvil <honza@jikos.cz> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Ulrich Kunitz <kune@deine-taler.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Bret Towe" <magnade@gmail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-20mm: Remove slab destructors from kmem_cache_create().Paul Mundt
Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-19mm: variable length argument supportOllie Wild
Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from the old mm into the new mm. We create the new mm before the binfmt code runs, and place the new stack at the very top of the address space. Once the binfmt code runs and figures out where the stack should be, we move it downwards. It is a bit peculiar in that we have one task with two mm's, one of which is inactive. [a.p.zijlstra@chello.nl: limit stack size] Signed-off-by: Ollie Wild <aaw@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Cc: Hugh Dickins <hugh@veritas.com> [bunk@stusta.de: unexport bprm_mm_init] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16diskquota: 32bit quota tools on 64bit architecturesVasily Tarasov
OpenVZ Linux kernel team has discovered the problem with 32bit quota tools working on 64bit architectures. In 2.6.10 kernel sys32_quotactl() function was replaced by sys_quotactl() with the comment "sys_quotactl seems to be 32/64bit clean, enable it for 32bit" However this isn't right. Look at if_dqblk structure: struct if_dqblk { __u64 dqb_bhardlimit; __u64 dqb_bsoftlimit; __u64 dqb_curspace; __u64 dqb_ihardlimit; __u64 dqb_isoftlimit; __u64 dqb_curinodes; __u64 dqb_btime; __u64 dqb_itime; __u32 dqb_valid; }; For 32 bit quota tools sizeof(if_dqblk) == 0x44. But for 64 bit kernel its size is 0x48, 'cause of alignment! Thus we got a problem. Attached patch reintroduce sys32_quotactl() function, that handles this and related situations. [michal.k.k.piotrowski@gmail.com: build fix] [akpm@linux-foundation.org: Make it link with CONFIG_QUOTA=n] Signed-off-by: Vasily Tarasov <vtaras@openvz.org> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Jan Kara <jack@ucw.cz> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16PIE randomizationJan Kratochvil
This patch is using mmap()'s randomization functionality in such a way that it maps the main executable of (specially compiled/linked -pie/-fpie) ET_DYN binaries onto a random address (in cases in which mmap() is allowed to perform a randomization). Origin of this patch is in exec-shield (http://people.redhat.com/mingo/exec-shield/) [jkosina@suse.cz: pie randomization: fix BAD_ADDR macro] Signed-off-by: Jan Kratochvil <honza@jikos.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11[PATCH] add SIGNAL syscall class (v3)Amy Griffis
Add a syscall class for sending signals. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-05-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] wire up pselect, ppoll [IA64] Add TIF_RESTORE_SIGMASK [IA64] unwind did not work for processes born with CLONE_STOPPED [IA64] Optional method to purge the TLB on SN systems [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64 [IA64-SN2][KJ] mmtimer.c-kzalloc [IA64] fix stack alignment for ia32 signal handlers [IA64] - Altix: hotplug after intr redirect can crash system [IA64] save and restore cpus_allowed in cpu_idle_wait [IA64] Removal of percpu TR cleanup in kexec code [IA64] Fix some section mismatch errors
2007-05-08[IA64] Add TIF_RESTORE_SIGMASKAlexey Dobriyan
Preparation for pselect and ppoll. ia32 compat code not tested. :-( Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08[IA64] fix stack alignment for ia32 signal handlersMarkus F.X.J. Oberhumer
This fixes the setup of the alignment of the signal frame, so that all signal handlers are run with a properly aligned stack frame. The current code "over-aligns" the stack pointer so that the stack frame is effectively always mis-aligned by 4 bytes. But what we really want is that on function entry ((sp + 4) & 15) == 0, which matches what would happen if the stack were aligned before a "call" instruction. i386 and x86_64 are already fixed by d347f372273c2b3d86a66e2e1c94c790c208e166 Signed-off-by: Markus F.X.J. Oberhumer <markus@oberhumer.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08use SLAB_PANIC flag cleanupAkinobu Mita
Use SLAB_PANIC and delete duplicated panic(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Ian Molton <spyro@f2s.com> Cc: David Howells <dhowells@redhat.com> Cc: Andi Kleen <ak@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-06[IA64] sync compat getdentsAlexandr Andreev
Add VERIFY_WRITE check in the beginning like compat_sys_getdents() (EINVAL vs EFAULT). Signed-off-by: Alexandr Andreev <aandreev@openvz.org> Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>