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2006-12-07[PATCH] initrd: remove unused false condition for initrd_startHenry Nestler7-16/+7
After LOADER_TYPE && INITRD_START are true, the short if-condition for INITRD_START can never be false. Remove unused code from the else condition. Signed-off-by: Henry Nestler <henry.ne@arcor.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] ver_linux additionsValdis Kletnieks1-0/+8
scripts/ver_linux needed some minor clean-ups, as follows: 1) Add reporting of actual oprofile release 2) Add reporting of actual wireless-tools release 3) Add reporting of actual pcmciautils release Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] remove the syslog interface when printk is disabledMike Galbraith3-7/+5
Attempts to read() from the non-existent dmesg buffer will return zero and userspace tends to get stuck in a busyloop. So just remove /dev/kmsg altogether if CONFIG_PRINTK=n. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] qconf: support old QTakpm@osdl.org1-4/+4
Might make qconf compilable with qt-3.1 as well as qt-3.3 Cc: greg chesson <xtp@google.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] ktime: Fix signed / unsigned mismatch in ktime_to_nsThomas Gleixner1-2/+2
The 32 bit implementation of ktime_to_ns returns unsigned value, while the 64 bit version correctly returns an signed value. There is no current user affected by this, but it has to be fixed, as ktime values can be negative. Pointed-out-by: Helmut Duregger <Helmut.Duregger@student.uibk.ac.at> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] retries in ext4_prepare_write() violate ordering requirementsAndrey Savochkin1-10/+75
In journal=ordered or journal=data mode retry in ext4_prepare_write() breaks the requirements of journaling of data with respect to metadata. The fix is to call commit_write to commit allocated zero blocks before retry. Signed-off-by: Kirill Korotaev <dev@openvz.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ken Chen <kenneth.w.chen@intel.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] retries in ext3_prepare_write() violate ordering requirementsAndrey Savochkin1-10/+75
In journal=ordered or journal=data mode retry in ext3_prepare_write() breaks the requirements of journaling of data with respect to metadata. The fix is to call commit_write to commit allocated zero blocks before retry. Signed-off-by: Kirill Korotaev <dev@openvz.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ken Chen <kenneth.w.chen@intel.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] remove HASH_HIGHMEMAndrew Morton2-3/+2
It has no users and it's doubtful that we'll need it again. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] protect ext2 ioctl modifying append_only immutable etc with i_mutexAndrew Morton1-1/+5
Port commit a090d9132c1e53e3517111123680c15afb25c0a4 into ext2: All modifications of ->i_flags in inodes that might be visible to somebody else must be under ->i_mutex. That patch fixes ext2 ioctl() setting S_APPEND. Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] remove kernel syscallsArnd Bergmann20-2701/+1
The last thing we agreed on was to remove the macros entirely for 2.6.19, on all architectures. Unfortunately, I think nobody actually _did_ that, so they are still there. [akpm@osdl.org: x86_64 fix] Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg Schafer <gschafer@zip.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] driver/base/memory.c: handle errors properlyAndrew Morton1-11/+23
Do proper error-checking and propagation in drivers/base/memory.c, hence fix __must_check warnings. Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] PCEngines WRAP LED SupportKristian Kielhofner3-0/+149
A driver for the PCEngines WRAP boards (http://www.pcengines.ch), which are very similar to the Soekris net4801 (same NS SC1100 geode reference design). The LEDs on the WRAP are on different GPIO lines and I have modified and copied the net48xx error led support for this. It also includes support for an "extra" led (in addition to error). The three LEDs on the WRAP are at GPIO lines 2,3,18 (WRAP LEDs from left to right). This driver gives access to the second and third LEDs by twiddling GPIO lines 3 & 18. Because these boards are so similar to the net48xx, I basically sed-ed that driver to form the basis for leds-wrap.c. The only changes from leds-net48xx.c are: - #define WRAP_EXTRA_LED_GPIO - name changes - duplicate relevant sections to provide support for the "extra" led - reverse the various *_led_set values. The WRAP is "backwards" from the net48xx, and these needed to be updated for that. [akpm@osdl.org: build fix] Signed-off-by: Kristian Kielhofner <kris@krisk.org> Acked-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] HZ: 300Hz supportAlan Cox1-5/+15
Fix two things. Firstly the unit is "Hz" not "HZ". Secondly it is useful to have 300Hz support when doing multimedia work. 250 is fine for us in Europe but the US frame rate is 30fps (29.99 blah for pedants). 300 gives us a tick divisible by both 25 and 30, and for interlace work 50 and 60. It's also giving similar performance to 250Hz. I'd argue we should remove 250 and add 300, but that might be excess disruption for now. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] debug: workqueue locking sanityPeter Zijlstra2-0/+18
Workqueue functions should not leak locks, assert so, printing the last function ran. Use macros in lockdep.h to avoid include dependency pains. [akpm@osdl.org: build fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] ext4_ext_split(): remove dead codeAdrian Bunk1-3/+0
The Coverity checker noted that this was dead code, since in all places above in this function, "err" is immediately checked. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] sleep profilingIngo Molnar4-10/+65
Implement prof=sleep profiling. TASK_UNINTERRUPTIBLE sleeps will be taken as a profile hit, and every millisecond spent sleeping causes a profile-hit for the call site that initiated the sleep. Sample readprofile output on i386: 306 ps2_sendbyte 1.3973 432 call_usermodehelper_keys 1.9548 484 ps2_command 0.6453 790 __driver_attach 4.7879 1593 msleep 44.2500 3976 sync_buffer 64.1290 4076 do_lookup 12.4648 8587 sync_page 122.6714 20820 total 0.0067 (NOTE: architectures need to check whether get_wchan() can be called from deep within the wakeup path.) akpm: we need to mark more functions __sched. lock_sock(), msleep(), others.. akpm: the contention in do_lookup() is a surprise. Presumably doing disk reads for directory contents while holding i_mutex. [akpm@osdl.org: various fixes] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Documentation: remount_fs() needs lock_kernelVasily Averin1-1/+1
Fixed long-lived typo: remount_fs() needs BKL Signed-off-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] lockdep: name some old style locksPeter Zijlstra11-13/+16
Name some of the remaning 'old_style_spin_init' locks Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] lockdep: print current locks on in_atomic warningsPeter Zijlstra1-0/+2
Add debug_show_held_locks(current) to __might_sleep() and schedule(); this makes finding the offending lock leak easier. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] corrupted cramfs filesystems cause kernel oopsPhillip Lougher1-0/+2
Steve Grubb's fzfuzzer tool (http://people.redhat.com/sgrubb/files/ fsfuzzer-0.6.tar.gz) generates corrupt Cramfs filesystems which cause Cramfs to kernel oops in cramfs_uncompress_block(). The cause of the oops is an unchecked corrupted block length field read by cramfs_readpage(). This patch adds a sanity check to cramfs_readpage() which checks that the block length field is sensible. The (PAGE_CACHE_SIZE << 1) size check is intentional, even though the uncompressed data is not going to be larger than PAGE_CACHE_SIZE, gzip sometimes generates compressed data larger than the original source data. Mkcramfs checks that the compressed size is always less than or equal to PAGE_CACHE_SIZE << 1. Of course Cramfs could use the original uncompressed data in this case, but it doesn't. Signed-off-by: Phillip Lougher <phillip@lougher.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Make initramfs printk a warning on incorrect cpio typeArjan van de Ven1-0/+4
It turns out that the "-c" option of cpio is highly unportable even between distros let alone unix variants, and may actually make the wrong type of cpio archive. I just wasted quite some time on this, and the kernel can detect this and warn about it (it's __init memory so it gets thrown away and thus there is no runtime overhead) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] i2lib unused variable cleanupMariusz Kozlowski1-1/+0
In file included from drivers/char/ip2/ip2main.c:285: drivers/char/ip2/i2lib.c: In function `i2Output': drivers/char/ip2/i2lib.c:1019: warning: unused variable `rc' Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] ext4: uninline large functionsAndrew Morton3-60/+78
Saves nearly 4kbytes on x86. Cc: Arnaldo Carvalho de Melo <acme@mandriva.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] ext3: uninline large functionsAndrew Morton3-60/+77
Saves nearly 4kbytes on x86. Cc: Arnaldo Carvalho de Melo <acme@mandriva.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] vfs_getattr(): remove dead codeAndrew Morton1-7/+0
As Mikulas points out, (1 << anything) won't be evaluating to zero. This code is long-dead. Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] get_options to allow a hypenated range for isolcpusDerek Fults2-2/+40
This allows a hyphenated range of positive numbers in the string passed to command line helper function, get_options. Currently the command line option "isolcpus=" takes as its argument a list of cpus. Format: <cpu number>,...,<cpu number> Valid values of <cpu_number> include all cpus, 0 to "number of CPUs in system - 1". This can get extremely long when isolating the majority of cpus on a large system. The kernel isolcpus code would not need any changing to use this feature. To use it, the change would be in the command line format for 'isolcpus=' Format: <cpu number>,...,<cpu number> or <cpu number>-<cpu number> (must be a positive range in ascending order.) or a mixture <cpu number>,...,<cpu number>-<cpu number> Signed-off-by: Derek Fults <dfults@sgi.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] More list debugging contextDave Jones1-4/+6
Print the other (hopefully) known good pointer when list_head debugging too, which may yield additional clues. Also fix for 80-columns to win akpm brownie points. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Correct misc_register return code handling in several driversNeil Horman5-7/+26
Clean up several code points in which the return code from misc_register is not handled properly. Several modules failed to deregister various hooks when misc_register fails, and this patch cleans them up. Also there are a few modules that legitimately don't care about the failure status of misc register. These drivers however unilaterally call misc_deregister on module unload. Since misc_register doesn't initialize the list_head in the init_routine if it fails, the deregister operation is at risk for oopsing when list_del is called. The initial solution was to manually init the list in the miscdev structure in each of those modules, but the consensus in this thread was to consolodate and do that universally inside misc_register. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Kylene Jo Hall <kjhall@us.ibm.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Olaf Hering <olh@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] VFS: extra check inside dentry_unhash()Vasily Averin1-2/+1
d_count check after dget() is always true. Signed-off-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] drivers/cdrom/*: trivial vsnprintf() conversionAlexey Dobriyan2-4/+3
Fixing sbpcd.c baroque error printing in process. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] hpfs: fix printk format warningsRandy Dunlap5-16/+37
Fix hpfs printk warnings: fs/hpfs/dir.c:87: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/dir.c:147: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long int' fs/hpfs/dir.c:148: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long int' fs/hpfs/dnode.c:537: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int' fs/hpfs/dnode.c:854: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'loff_t' fs/hpfs/ea.c:247: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/inode.c:254: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' fs/hpfs/map.c:129: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:135: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:140: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:147: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' fs/hpfs/map.c:154: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'ino_t' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] hpfs: bring hpfs_error() into shapeAlexey Dobriyan2-15/+11
- switch to error message buffer in .bss - missing va_end() (htf it worked before?) - use vsnprintf() - rename variables to understandable "fmt", "args". - "const char *fmt", yes. - add __attribute__((format ... Still, put that coffee down before reading more. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] fs/*: trivial vsnprintf() conversionAlexey Dobriyan6-11/+11
It would very lame to get buffer overflow via one of the following. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Exar quad port serialPaul B Schroeder4-0/+65
This is on our "Envoy" boxes which we have, according to the documentation, an "Exar ST16C554/554D Quad UART with 16-byte Fifo's". The box also has two other "on-board" serial ports and a modem chip. The two on-board serial UARTs were being detected along with the first two Exar UARTs. The last two Exar UARTs were not showing up and neither was the modem. This patch was the only way I could the kernel to see beyond the standard four serial ports and get all four of the Exar UARTs to show up. [akpm@osdl.org: build fix] Signed-off-by: Paul B Schroeder <pschroeder@uplogix.com> Cc: Lennart Sorensen <lsorense@csclub.uwaterloo.ca> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] lockdep: annotate bcsp driverPeter Zijlstra1-2/+2
============================================= [ INFO: possible recursive locking detected ] 2.6.18-1.2699.fc6 #1 --------------------------------------------- swapper/0 is trying to acquire lock: (&list->lock#3){+...}, at: [<c05ad307>] skb_dequeue+0x12/0x43 but task is already holding lock: (&list->lock#3){+...}, at: [<df98cd79>] bcsp_dequeue+0x6a/0x11e [hci_uart] Two different list locks nest, annotate so. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Marcel Holtmann <marcel@holtmann.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Compile-time check re world-writeable module paramsAlexey Dobriyan1-0/+3
One of the mistakes a module_param() user can make is to supply default value of module parameter as the last argument. module_param() accepts permissions instead. If default value is, say, 3 (-------wx), parameter becomes world-writeable. So far, the only remedy was to apply grep(1) and read drivers submitted to -mm. BTDT. With this patch applied, compiler will finally do some job. *) bounds checking on permissions *) world-writeable bit checking on permissions *) compile breakage if checks trigger First version of this check (only "& 2" part) directly caught 4 out of 7 places during my last grep. Subject: Neverending module_param() bugs [X] drivers/acpi/sbs.c:101:module_param(capacity_mode, int, CAPACITY_UNIT); [X] drivers/acpi/sbs.c:102:module_param(update_mode, int, UPDATE_MODE); [ ] drivers/acpi/sbs.c:103:module_param(update_info_mode, int, UPDATE_INFO_MODE); [ ] drivers/acpi/sbs.c:104:module_param(update_time, int, UPDATE_TIME); [ ] drivers/acpi/sbs.c:105:module_param(update_time2, int, UPDATE_TIME2); [X] drivers/char/watchdog/sbc8360.c:203:module_param(timeout, int, 27); [X] drivers/media/video/tuner-simple.c:13:module_param(offset, int, 0666); Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats: cleanup reply assemblingOleg Nesterov1-22/+16
Thomas Graf wrote: > > nla_nest_start() may return NULL, either rely on prepare_reply() to be > correct and BUG() on failure or do proper error handling for all > functions. nla_put() in taskstat.c can fail only if the 'size' argument of alloc_skb() was not right. This is a kernel bug, we should not hide it. So add 'BUG()' on error path and check for 'na == NULL'. > genlmsg_cancel() is only required in error paths for dumping > procedures. So we can remove 'genlmsg_cancel()' calls and 'void *reply' (saves 227 bytes). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Thomas Graf <tgraf@suug.ch> Cc: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Jay Lan <jlan@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats: use nla_reserve() for reply assemblingOleg Nesterov1-42/+44
Currently taskstats_user_cmd()/taskstats_exit() do: 1) allocate stats 2) fill stats 3) make a temporary copy on stack (236 bytes) 4) copy that copy to skb 5) free stats With the help of nla_reserve() we can operate on skb->data directly, thus avoiding all these steps except 2). So, before this patch: // copy *stats to skb->data int mk_reply(skb, ..., struct taskstats *stats); fill_pid(stats); mk_reply(skb, ..., stats); After: // return a pointer to skb->data struct taskstats *mk_reply(skb, ...); stat = mk_reply(skb, ...); fill_pid(stats); Shrinks taskatsks.o by 162 bytes. A stupid benchmark (send one million TASKSTATS_CMD_ATTR_PID) shows the real user sys before: 4.02 0.06 3.96 4.02 0.04 3.98 4.02 0.04 3.97 after: 3.86 0.08 3.78 3.88 0.10 3.77 3.89 0.09 3.80 but this looks suspiciously good. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Jay Lan <jlan@sgi.com> Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats: factor out reply assemblingOleg Nesterov1-27/+28
Introduce mk_reply() helper which does all nla_put()s on reply. Saves 453 bytes and a preparation for the next patch. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Shailabh Nagar <nagar@watson.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Jay Lan <jlan@sgi.com> Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats: cleanup ->signal->stats allocationOleg Nesterov3-26/+25
Allocate ->signal->stats on demand in taskstats_exit(), this allows us to remove taskstats_tgid_alloc() (the last non-trivial inline) from taskstat's public interface. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Shailabh Nagar <nagar@watson.ibm.com> Cc: Jay Lan <jlan@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats: cleanup do_exit() pathOleg Nesterov3-47/+19
do_exit: taskstats_exit_alloc() ... taskstats_exit_send() taskstats_exit_free() I think this is not good, let it be a single function exported to the core kernel, taskstats_exit(), which does alloc + send + free itself. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Shailabh Nagar <nagar@watson.ibm.com> Cc: Jay Lan <jlan@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] taskstats_exit_alloc: optimize/simplifyOleg Nesterov1-13/+4
If there are no listeners, every task does unneeded kmem_cache alloc/free on exit. We don't need listeners->sem for 'if (!list_empty())' check. Yes, we may have a false positive, but this doesn't differ from the case when the listener is unregistered after we drop the semaphore. So we don't need to do allocation beforehand. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Balbir Singh <balbir@in.ibm.com> Acked-by: Shailabh Nagar <nagar@watson.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] read_cache_pages() cleanupOGAWA Hirofumi1-7/+1
Use put_pages_list() instead of opencoding it. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] paride: return proper error codeAkinobu Mita4-12/+12
This patch makes module init return proper value instead of -1 (-EPERM). Cc: Tim Waugh <tim@cyberelk.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] slab: use probe_kernel_address()Andrew Morton1-5/+2
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] probe_kernel_address() needs to do set_fs()Andrew Morton1-0/+8
probe_kernel_address() purports to be generic, only it forgot to select KERNEL_DS, so it presently won't work right on all architectures. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] parport_pc: Add support for OX16PCI952 parallel portRyan Underwood2-0/+5
Add support for the parallel port (implemented as separate PCI function) on the Oxford Semiconductor OX16PCI952. Signed-off-by: Ryan Underwood <nemesis@icequake.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] kconfig: PRINTK_TIME depends on PRINTKRandy Dunlap1-0/+1
Make PRINTK_TIME depend on PRINTK. Only display/offer it if PRINTK is enabled. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] profile: fix uaccess handlingHeiko Carstens1-1/+2
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] compat: fix uaccess handlingHeiko Carstens2-29/+39
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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