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2008-05-01kexec: make extended crashkernel= syntax less confusingMichael Ellerman
The extended crashkernel syntax is a little confusing in the way it handles ranges. eg: crashkernel=512M-2G:64M,2G-:128M Means if the machine has between 512M and 2G of memory the crash region should be 64M, and if the machine has 2G of memory the region should be 64M. Only if the machine has more than 2G memory will 128M be allocated. Although that semantic is correct, it is somewhat baffling. Instead I propose that the end of the range means the first address past the end of the range, ie: 512M up to but not including 2G. [bwalle@suse.de: clarify inclusive/exclusive in crashkernel commandline in documentation] Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Bernhard Walle <bwalle@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01docbook: fix vmalloc missing parameter notationRandy Dunlap
Fix vmalloc kernel-doc warning: Warning(linux-2.6.25-git14//mm/vmalloc.c:555): No description found for parameter 'caller' 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>
2008-05-01isdn: hysdn_procconf.c build fixIngo Molnar
x86.git randconfig testing found the following build error in latest -git: CC [M] drivers/isdn/hysdn/hysdn_procconf.o CC [M] drivers/isdn/hysdn/hysdn_init.o drivers/isdn/hysdn/hysdn_procconf.c: In function 'hysdn_procconf_init': drivers/isdn/hysdn/hysdn_procconf.c:408: error: too few arguments to function 'proc_create' with the following config: http://redhat.com/~mingo/misc/config-Wed_Apr_30_15_12_48_CEST_2008.bad Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: "Denis V. Lunev" <den@openvz.org> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01Embedded Maintainer(s), linux-embedded@vger listDavid Woodhouse
Add Paul and myself, and the linux-embedded list, to MAINTAINERS. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01vfs: fix permission checking in sys_utimensatMiklos Szeredi
If utimensat() is called with both times set to UTIME_NOW or one of them to UTIME_NOW and the other to UTIME_OMIT, then it will update the file time without any permission checking. I don't think this can be used for anything other than a local DoS, but could be quite bewildering at that (e.g. "Why was that large source tree rebuilt when I didn't modify anything???") This affects all kernels from 2.6.22, when the utimensat() syscall was introduced. Fix by doing the same permission checking as for the "times == NULL" case. Thanks to Michael Kerrisk, whose utimensat-non-conformances-and-fixes.patch in -mm also fixes this (and breaks other stuff), only he didn't realize the security implications of this bug. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01sysfs: sysfs_update_group stub for CONFIG_SYSFS=nRandy Dunlap
scsi_transport_spi uses sysfs_update_group() when CONFIG_SYSFS=n, so provide a stub for it. next-20080423/drivers/scsi/scsi_transport_spi.c:1467: error: implicit declaration of function 'sysfs_update_group' make[3]: *** [drivers/scsi/scsi_transport_spi.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01Add a new sysfs_streq() string comparison functionDavid Brownell
Add a new sysfs_streq() string comparison function, which ignores the trailing newlines found in sysfs inputs. By example: sysfs_streq("a", "b") ==> false sysfs_streq("a", "a") ==> true sysfs_streq("a", "a\n") ==> true sysfs_streq("a\n", "a") ==> true This is intended to simplify parsing of sysfs inputs, letting them avoid the need to manually strip off newlines from inputs. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: handle leap second via timerRoman Zippel
Remove the leap second handling from second_overflow(), which doesn't have to check for it every second anymore. With CONFIG_NO_HZ this also makes sure the leap second is handled close to the full second. Additionally this makes it possible to abort a leap second properly by resetting the STA_INS/STA_DEL status bits. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: remove current_tick_length()Roman Zippel
current_tick_length used to do a little more, but now it just returns tick_length, which we can also access directly at the few places, where it's needed. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: rename TICK_LENGTH_SHIFT to NTP_SCALE_SHIFTRoman Zippel
As TICK_LENGTH_SHIFT is used for more than just the tick length, the name isn't quite approriate anymore, so this renames it to NTP_SCALE_SHIFT. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: support for TAIRoman Zippel
This adds support for setting the TAI value (International Atomic Time). The value is reported back to userspace via timex (as we don't have a ntp_gettime() syscall). Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: increase time_offset resolutionRoman Zippel
time_offset is already a 64bit value but its resolution barely used, so this makes better use of it by replacing SHIFT_UPDATE with TICK_LENGTH_SHIFT. Side note: the SHIFT_HZ in SHIFT_UPDATE was incorrect for CONFIG_NO_HZ and the primary reason for changing time_offset to 64bit to avoid the overflow. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: increase time_freq resolutionRoman Zippel
This changes time_freq to a 64bit value and makes it static (the only outside user had no real need to modify it). Intermediate values were already 64bit, so the change isn't that big, but it saves a little in shifts by replacing SHIFT_NSEC with TICK_LENGTH_SHIFT. PPM_SCALE is then used to convert between user space and kernel space representation. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: NTP4 user space bits updateRoman Zippel
This adds a few more things from the ntp nanokernel related to user space. It's now possible to select the resolution used of some values via STA_NANO and the kernel reports in which mode it works (pll/fll). If some values for adjtimex() are outside the acceptable range, they are now simply normalized instead of letting the syscall fail. I removed MOD_CLKA/MOD_CLKB as the mapping didn't really makes any sense, the kernel doesn't support setting the clock. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: cleanup ntp.cRoman Zippel
This is mostly a style cleanup of ntp.c and extracts part of do_adjtimex as ntp_update_offset(). Otherwise the functionality is still the same as before. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01remove div_long_long_remRoman Zippel
x86 is the only arch right now, which provides an optimized for div_long_long_rem and it has the downside that one has to be very careful that the divide doesn't overflow. The API is a little akward, as the arguments for the unsigned divide are signed. The signed version also doesn't handle a negative divisor and produces worse code on 64bit archs. There is little incentive to keep this API alive, so this converts the few users to the new API. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01rename div64_64 to div64_u64Roman Zippel
Rename div64_64 to div64_u64 to make it consistent with the other divide functions, so it clearly includes the type of the divide. Move its definition to math64.h as currently no architecture overrides the generic implementation. They can still override it of course, but the duplicated declarations are avoided. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: Avi Kivity <avi@qumranet.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01convert a few do_div usersRoman Zippel
This converts a few users of do_div to div_[su]64 and this demonstrates nicely how it can reduce some expressions to one-liners. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01introduce explicit signed/unsigned 64bit divideRoman Zippel
The current do_div doesn't explicitly say that it's unsigned and the signed counterpart is missing, which is e.g. needed when dealing with time values. This introduces 64bit signed/unsigned divide functions which also attempts to cleanup the somewhat awkward calling API, which often requires the use of temporary variables for the dividend. To avoid the need for temporary variables everywhere for the remainder, each divide variant also provides a version which doesn't return the remainder. Each architecture can now provide optimized versions of these function, otherwise generic fallback implementations will be used. As an example I provided an alternative for the current x86 divide, which avoids the asm casts and using an union allows gcc to generate better code. It also avoids the upper divde in a few more cases, where the result is known (i.e. upper quotient is zero). Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01frv: unbreak misalignment handling changesDavid Howells
Fix a reference in a arch/frv/mm/Makefile to unaligned.c which has now been deleted. Also revert the change to the guard macro name in include/asm-frv/unaligned.h. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01Fix cpu hotplug problem in softirq codeChristian Borntraeger
currently cpu hotplug (unplug) seems broken on s390 and likely others. On cpu unplug the system starts to behave very strange and hangs. I bisected the problem to the following commit: commit 48f20a9a9488c432fc86df1ff4b7f4fa895d1183 Author: Olof Johansson <olof@lixom.net> Date: Tue Mar 4 15:23:25 2008 -0800 tasklets: execute tasklets in the same order they were queued Reverting this patch seems to fix the problem. I looked into takeover_tasklet and it seems that there is a way to corrupt the tail pointer of the current cpu. If the tasklet list of the frozen cpu is empty, the tail pointer of the current cpu points to the address of the head pointer of the stopped cpu and not to the next pointer of a tasklet_struct. This patch avoids the list splice of the list is empty and cpu hotplug seems to work as the tail pointer is not corrupted. Olof, can you look into that patch and ACK/NACK it so Andrew can push this to Linus, if appropriate? Please note that some lines are longer than 80 chars, but line-wrapping looked worse that this version. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01cpusets: update maintainersPaul Jackson
Update CPUSETS MAINTAINERS to reflect the more active role of Paul Menage (secondary to his work on cgroups) and the retirement of the original author of cpusets, Simon Derr. Thanks, Simon! Best of luck to you. Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Paul Menage <menage@google.com> Acked-by: Simon Derr <simon.derr@bull.net> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01Merge branch 'smsc47b397-new-id' into releaseMark M. Hoffman
2008-05-01module: add MODULE_STATE_GOING notifier callPeter Oberparleiter
Provide module unload callback. Required by the gcov profiling infrastructure to keep track of profiling data structures. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01module: Enhance verify_export_symbolsRusty Russell
Make verify_export_symbols check the modules unused, unused_gpl and gpl_future syms. Inspired by Jan Beulich's fix, but table-driven. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01module: set unused_gpl_crcs instead of overwriting unused_crcsRusty Russell
Obvious typo, but I don't know of any modules with unused GPL exports, and then it would take someone noticing that the version shouldn't have matched in a dependent module. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01module: neaten __find_symbol, rename to find_symbolRusty Russell
__find_symbol() has grown over time: there are now 5 different arrays of symbols it traverses. It also shouldn't print out a warning on some calls (ie. verify_symbol which simply checks for name clashes, and __symbol_put which checks for bugs). 1) Rename to find_symbol: no need for underscores. 2) Use bool and add "warn" parameter to suppress warnings. 3) Make table-driven rather than open coded. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01module: reduce module image and resident sizeRusty Russell
Resulting reduction (x86-64, gcc 4.1.2) with my (special purpose, i.e. much reduced) configurations: - 16k kernel resident size - 180k module resident size - 10k module image size Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01module: make module_sect_attrs private to kernel/module.cRusty Russell
No-one else is using these afaics. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-01[CRYPTO] cryptd: Correct kzalloc error testJulia Lawall
Normally, kzalloc returns NULL or a valid pointer value, not a value to be tested using IS_ERR. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-05-01[CRYPTO] eseqiv: Fix off-by-one encryptionHerbert Xu
After attaching the IV to the head during encryption, eseqiv does not increase the encryption length by that amount. As such the last block of the actual plain text will be left unencrypted. Fortunately the only user of this code hifn currently crashes so this shouldn't affect anyone :) Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-05-01[CRYPTO] api: Fix scatterwalk_sg_chainHerbert Xu
When I backed out of using the generic sg chaining (as it isn't currently portable) and introduced scatterwalk_sg_chain/scatterwalk_sg_next I left out the sg_is_last check in the latter. This causes it to potentially dereference beyond the end of the sg array. As most uses of scatterwalk_sg_next are bound by an overall length, this only affected the chaining code in authenc and eseqiv. Thanks to Patrick McHardy for identifying this problem. This patch also clears the "last" bit on the head of the chained list as it's no longer last. This also went missing in scatterwalk_sg_chain and is present in sg_chain. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-05-01[CRYPTO] authenc: Fix async crypto crash in crypto_authenc_genicv()Patrick McHardy
crypto_authenc_givencrypt_done uses req->data as struct aead_givcrypt_request, while it really points to a struct aead_request, causing this crash: BUG: unable to handle kernel paging request at 6b6b6b6b IP: [<dc87517b>] :authenc:crypto_authenc_genicv+0x23/0x109 *pde = 00000000 Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC Modules linked in: hifn_795x authenc esp4 aead xfrm4_mode_tunnel sha1_generic hmac crypto_hash] Pid: 3074, comm: ping Not tainted (2.6.25 #4) EIP: 0060:[<dc87517b>] EFLAGS: 00010296 CPU: 0 EIP is at crypto_authenc_genicv+0x23/0x109 [authenc] EAX: daa04690 EBX: daa046e0 ECX: dab0a100 EDX: daa046b0 ESI: 6b6b6b6b EDI: dc872054 EBP: c033ff60 ESP: c033ff0c DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process ping (pid: 3074, ti=c033f000 task=db883a80 task.ti=dab6c000) Stack: 00000000 daa046b0 c0215a3e daa04690 dab0a100 00000000 ffffffff db9fd7f0 dba208c0 dbbb1720 00000001 daa04720 00000001 c033ff54 c0119ca9 dc852a75 c033ff60 c033ff60 daa046e0 00000000 00000001 c033ff6c dc87527b 00000001 Call Trace: [<c0215a3e>] ? dev_alloc_skb+0x14/0x29 [<c0119ca9>] ? printk+0x15/0x17 [<dc87527b>] ? crypto_authenc_givencrypt_done+0x1a/0x27 [authenc] [<dc850cca>] ? hifn_process_ready+0x34a/0x352 [hifn_795x] [<dc8353c7>] ? rhine_napipoll+0x3f2/0x3fd [via_rhine] [<dc851a56>] ? hifn_check_for_completion+0x4d/0xa6 [hifn_795x] [<dc851ab9>] ? hifn_tasklet_callback+0xa/0xc [hifn_795x] [<c011d046>] ? tasklet_action+0x3f/0x66 [<c011d230>] ? __do_softirq+0x38/0x7a [<c0105a5f>] ? do_softirq+0x3e/0x71 [<c011d17c>] ? irq_exit+0x2c/0x65 [<c010e0c0>] ? smp_apic_timer_interrupt+0x5f/0x6a [<c01042e4>] ? apic_timer_interrupt+0x28/0x30 [<dc851640>] ? hifn_handle_req+0x44a/0x50d [hifn_795x] ... Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-04-30Update .gitignore to include include/linux/bounds.hTheodore Ts'o
(which is autogenerated by kbuild) Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ipv6: Compilation fix for compat MCAST_MSFILTER sockopts.
2008-04-30Fix dnotify/close raceAl Viro
We have a race between fcntl() and close() that can lead to dnotify_struct inserted into inode's list *after* the last descriptor had been gone from current->files. Since that's the only point where dnotify_struct gets evicted, we are screwed - it will stick around indefinitely. Even after struct file in question is gone and freed. Worse, we can trigger send_sigio() on it at any later point, which allows to send an arbitrary signal to arbitrary process if we manage to apply enough memory pressure to get the page that used to host that struct file and fill it with the right pattern... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30x86: Mark OPTIMIZE_INLINING brokenLinus Torvalds
So Ingo finally did figure out why UML broke with this option: UML passes gcc the -fno-unit-at-a-time flag, and apparently that wreaks havoc with gcc's inlining. We could turn off -fno-unit-at-a-time for UML for gcc4+ (which is what x86 does), but there's bad blood about this whole option, and it does show that the thing is just fragile as heck. So let tempers cool, and disable the thing, and we can revisit the decision later. Cc: Adrian Bunk <bunk@kernel.org> Cc: David Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixes3 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixes3: (21 commits) x86: numaq fix x86: 8K stacks by default x86: ioremap ram check fix x86: fix HT cpu booting on 32-bit x86: optimize inlining off x86: CONFIG_X86_ELAN fix x86: Kconfig fix x86 PAT: fix performance drop for glx, use UC minus for ioremap(), ioremap_nocache() and pci_mmap_page_range() x86: use defconfigs from x86/configs/* toshiba: use ioremap_cached revert: "x86: ioremap(), extend check to all RAM pages" x86: don't bother printing compat vdso address fix: x86: support for new UV apic x86: fix early-BUG message x86: iommu_sac_force can become static x86: add proper header for reboot_force x86 VISWS: build fix x86, voyager: fix ioremap_nocache() hpet: fix x86: unexport kmap_atomic_to_page ...
2008-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: klist: fix coding style errors in klist.h and klist.c driver core: remove no longer used "struct class_device" pcmcia: remove pccard_sysfs_interface warnings devres: support addresses greater than an unsigned long via dev_ioremap kobject: do not copy vargs, just pass them around sysfs: sysfs_update_group stub for CONFIG_SYSFS=n DEBUGFS: Correct location of debugfs API documentation. driver core: warn about duplicate driver names on the same bus klist: implement klist_add_{after|before}() klist: implement KLIST_INIT() and DEFINE_KLIST() sysfs: Disallow truncation of files in sysfs
2008-04-30klist: fix coding style errors in klist.h and klist.cGreg Kroah-Hartman
Finally clean up the odd spacing in these files. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30driver core: remove no longer used "struct class_device"Kay Sievers
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30pcmcia: remove pccard_sysfs_interface warningsDavid Brownell
Make the PCMCIA core stop using class_interface to hide socket attribute registration. This removes the associated section mismatch warnings, and helps get to the point where that mechanism can finally be removed. Simplify that attribute registration by using an attribute_group. This is a net shrink in object size. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30devres: support addresses greater than an unsigned long via dev_ioremapKumar Gala
Use a resource_size_t instead of unsigned long since some arch's are capable of having ioremap deal with addresses greater than the size of a unsigned long. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Cc: Tejun Heo <htejun@gmail.com> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30kobject: do not copy vargs, just pass them aroundKay Sievers
This prevents a few unneeded copies. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30sysfs: sysfs_update_group stub for CONFIG_SYSFS=nRandy Dunlap
scsi_transport_spi uses sysfs_update_group() when CONFIG_SYSFS=n, so provide a stub for it. next-20080423/drivers/scsi/scsi_transport_spi.c:1467: error: implicit declaration of function 'sysfs_update_group' make[3]: *** [drivers/scsi/scsi_transport_spi.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30DEBUGFS: Correct location of debugfs API documentation.Robert P. J. Day
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30driver core: warn about duplicate driver names on the same busStas Sergeev
Currently an attempt to register multiple drivers with the same name causes the stack trace with some cryptic error message. The attached patch adds the necessary check and the clear error message. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30klist: implement klist_add_{after|before}()Tejun Heo
Add klist_add_after() and klist_add_before() which puts a new node after and before an existing node, respectively. This is useful for callers which need to keep klist ordered. Note that synchronizing between simultaneous additions for ordering is the caller's responsibility. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30klist: implement KLIST_INIT() and DEFINE_KLIST()Tejun Heo
klist is missing static initializers and definition helper. Add them. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-30sysfs: Disallow truncation of files in sysfsBen Hutchings
sysfs allows attribute files to be truncated, e.g. using ftruncate(), with the expected effect on their inode. For most attributes, this doesn't change the "real" size of the file i.e. how much can be read from it. However, the parameter validation for reading and writing binary attribute files is based on the inode size and not the size specified in the file's bin_attribute, so it can be broken by this. For example, if we try using dd to write to such a file: # pwd /sys/bus/pci/devices/0000:08:00.0 # ls -l config -rw-r--r-- 1 root root 4096 Feb 1 17:35 config # dd if=/dev/zero of=config bs=4 count=1 1+0 records in 1+0 records out # ls -l config -rw-r--r-- 1 root root 0 Feb 1 17:50 config # dd if=/dev/zero of=config bs=4 count=1 seek=128 dd: writing `config': No space left on device 1+0 records in 0+0 records out Also, after truncation to 0, parameter validation for read and write is disabled. Most bin_attribute read and write methods also validate the size and offset, but for some this will allow out-of-range access. This may be a security issue, though access to such files is often limited to root. In any case, the validation should remain for safety's sake!) This was previously reported in Bugzilla as bug 9867. sysfs should ignore size changes or else refuse them (by returning -EINVAL). This patch makes it ignore them. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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