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* Fix common misspellingsLucas De Marchi2011-03-312-2/+2
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* Merge branch 'for-linus' of git://www.jni.nu/crisLinus Torvalds2011-03-292-2/+2
|\ | | | | | | | | | | | | * 'for-linus' of git://www.jni.nu/cris: Correct auto-restart of syscalls via restartblock CRISv10: Fix return before mutex_unlock in pcf8563 Drop the CRISv32 version of pcf8563
| * Correct auto-restart of syscalls via restartblockJesper Nilsson2011-03-211-1/+1
| | | | | | | | | | | | This would for example be poll(2) Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
| * CRISv10: Fix return before mutex_unlock in pcf8563Jesper Nilsson2011-03-211-1/+1
| | | | | | | | | | Signed-off-by: Simone Contini <s.contini@oltrelinux.com> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* | Merge branch 'master' of ↵Artem Bityutskiy2011-03-253-4/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1 * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6: (9356 commits) [media] rc: update for bitop name changes fs: simplify iget & friends fs: pull inode->i_lock up out of writeback_single_inode fs: rename inode_lock to inode_hash_lock fs: move i_wb_list out from under inode_lock fs: move i_sb_list out from under inode_lock fs: remove inode_lock from iput_final and prune_icache fs: Lock the inode LRU list separately fs: factor inode disposal fs: protect inode->i_state with inode->i_lock lib, arch: add filter argument to show_mem and fix private implementations SLUB: Write to per cpu data when allocating it slub: Fix debugobjects with lockless fastpath autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd() autofs4 - remove autofs4_lock autofs4 - fix d_manage() return on rcu-walk autofs4 - fix autofs4_expire_indirect() traversal autofs4 - fix dentry leak in autofs4_expire_direct() autofs4 - reinstate last used update on access vfs - check non-mountpoint dentry might block in __follow_mount_rcu() ... NOTE! This merge commit was created to fix compilation error. The block tree was merged upstream and removed the 'elv_queue_empty()' function which the new 'mtdswap' driver is using. So a simple merge of the mtd tree with upstream does not compile. And the mtd tree has already be published, so re-basing it is not an option. To fix this unfortunate situation, I had to merge upstream into the mtd-2.6.git tree without committing, put the fixup patch on top of this, and then commit this. The result is that we do not have commits which do not compile. In other words, this merge commit "merges" 3 things: the MTD tree, the upstream tree, and the fixup patch.
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| *-. \ Merge branches 'irq-fixes-for-linus' and 'sched-fixes-for-linus' of ↵Linus Torvalds2011-03-181-1/+1
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Fix incorrect unlock in __setup_irq() cris: Use generic show_interrupts() genirq: show_interrupts: Check desc->name before printing it blindly cris: Use accessor functions to set IRQ_PER_CPU flag cris: Fix irq conversion fallout * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched, kernel-doc: Fix runqueue_is_locked() description
| | * | | cris: Fix irq conversion falloutThomas Gleixner2011-03-171-1/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/cris/arch-v10/kernel/irq.c: In function 'init_IRQ': arch/cris/arch-v10/kernel/irq.c:202:3: error: implicit declaration of function 'set_irq_desc_and_handler' Should have been set_irq_chip_and_handler() Fix it and convert to the new function names while at it. Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | Merge branch 'for-linus' of ↵Linus Torvalds2011-03-181-1/+1
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (47 commits) doc: CONFIG_UNEVICTABLE_LRU doesn't exist anymore Update cpuset info & webiste for cgroups dcdbas: force SMI to happen when expected arch/arm/Kconfig: remove one to many l's in the word. asm-generic/user.h: Fix spelling in comment drm: fix printk typo 'sracth' Remove one to many n's in a word Documentation/filesystems/romfs.txt: fixing link to genromfs drivers:scsi Change printk typo initate -> initiate serial, pch uart: Remove duplicate inclusion of linux/pci.h header fs/eventpoll.c: fix spelling mm: Fix out-of-date comments which refers non-existent functions drm: Fix printk typo 'failled' coh901318.c: Change initate to initiate. mbox-db5500.c Change initate to initiate. edac: correct i82975x error-info reported edac: correct i82975x mci initialisation edac: correct commented info fs: update comments to point correct document target: remove duplicate include of target/target_core_device.h from drivers/target/target_core_hba.c ... Trivial conflict in fs/eventpoll.c (spelling vs addition)
| | * | cris: fix comment typo occationally to occasionallyJustin P. Mattock2011-02-161-1/+1
| | |/ | | | | | | | | | | | | | | | Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * / cris: arch-v10: Switch do_timer() to xtime_update()Torben Hohn2011-01-311-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code failed to take the xtime_lock, which must be held when calling do_timer(). Use the safe version xtime_update() Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: hch@infradead.org Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: Mikael Starvik <starvik@axis.com> Cc: yong.zhang0@gmail.com LKML-Reference: <20110127145936.23248.16192.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* / CRIS: stop checking for MTD_CONCATDmitry Eremin-Solenikov2011-03-111-6/+0
|/ | | | | | | | | | | | | | | As MTD_CONCAT support is becoming an integral part of MTD core, there is no need for it's special treatment. So stop checking for MTD_CONCAT availability. Acked by Jesper Nilsson <jesper.nilsson@axis.com> for merging this via the MTD tree. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* cris: Convert V10 interrupt handlingThomas Gleixner2011-01-211-31/+10
| | | | | | | | | Convert the irq_chip functions and install handle_simple_irq for each interrupt. This converts V10 to the flow handling and lets us remove __do_IRQ(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mikael Starvik <starvik@axis.com>
* ptrace: cleanup arch_ptrace() on crisNamhyung Kim2010-10-281-9/+8
| | | | | | | | | | | | Use new 'regno' variable in order to remove redandunt expression and remove checking @addr less than 0 because @addr is now unsigned. Also update 'datap' on PTRACE_GET/SETREGS to fix a bug on arch-v10. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Acked-by: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ptrace: change signature of arch_ptrace()Namhyung Kim2010-10-281-3/+4
| | | | | | | | | | | | | | | Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-225-1/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: vfs: make no_llseek the default vfs: don't use BKL in default_llseek llseek: automatically add .llseek fop libfs: use generic_file_llseek for simple_attr mac80211: disallow seeks in minstrel debug code lirc: make chardev nonseekable viotape: use noop_llseek raw: use explicit llseek file operations ibmasmfs: use generic_file_llseek spufs: use llseek in all file operations arm/omap: use generic_file_llseek in iommu_debug lkdtm: use generic_file_llseek in debugfs net/wireless: use generic_file_llseek in debugfs drm: use noop_llseek
| * llseek: automatically add .llseek fopArnd Bergmann2010-10-155-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
* | cris: autoconvert trivial BKL usersArnd Bergmann2010-09-263-11/+13
|/ | | | | | | | | | | | | | | All uses of the big kernel lock in the cris architecture are for ioctl and open functions of character device drivers, which can be trivially converted to a per-driver mutex. Most of these are probably unnecessary, so it may make sense to audit them and eventually remove the extra mutex introduced by this patch. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: linux-cris-kernel@axis.com
* Make do_execve() take a const filename pointerDavid Howells2010-08-181-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* CRIS: Correct address of the romfs in boot imageJesper Nilsson2010-08-041-1/+1
| | | | | | The romfs should land after __init_end Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: Fasttimer: Remove obsolete ifdefJesper Nilsson2010-08-041-5/+1
| | | | Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: Better link to rs485 in helpJesper Nilsson2010-08-041-1/+1
| | | | Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: Remove CVS tag.Jesper Nilsson2010-08-041-2/+1
| | | | Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: v10: remove all BKL usageJesper Nilsson2010-08-041-26/+13
| | | | | | | We don't need to take the BKL here. Also fixes compile error after last commit (smp_lock.h was not included) Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* CRIS: gpio: don't call copy_to_user()/copy_from_user() while holding spinlocksJesper Nilsson2010-08-041-32/+48
| | | | | | | | | | | copy_to_user()/copy_from_user() must not be used with spinlocks held. Move locks inside each case so we have better control of when the locks are held. Also, since we use spinlocks, we don't need to hold the BKL, so remove it. Reported-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* cris: autoconvert trivial BKL users to private mutexJesper Nilsson2010-08-042-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All these files use the big kernel lock in a trivial way to serialize their private file operations, typically resulting from an earlier semi-automatic pushdown from VFS. None of these drivers appears to want to lock against other code, and they all use the BKL as the top-level lock in their file operations, meaning that there is no lock-order inversion problem. Consequently, we can remove the BKL completely, replacing it with a per-file mutex in every case. Using a scripted approach means we can avoid typos. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* cris: Pushdown the bkl from ioctlJesper Nilsson2010-08-043-25/+57
| | | | | | | | | | | | | From: Frederic Weisbecker <fweisbec@gmail.com> Pushdown the bkl to the remaining drivers using the deprecated .ioctl. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com>
* CRIS: GENERIC_TIME fixesJesper Nilsson2010-08-041-52/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | GENERIC_TIME was not functional for CRIS, giving random backward time jumps. For CRISv32 implement a new clocksource using the free running counter and ditch the arch_gettimeoffset. The random time jumps still existed, but turned out to be the write_seqlock which was missing around our do_timer() call. So switch over to GENERIC_TIME using the clocksource for CRISv32. CRISv10 doesn't have the free running counter needed for the clocksource trick, but we can still use GENERIC_TIME with arch_gettimeoffset. Unfortunately, there were problems in using the prescaler register to timer0 for the gettimeoffset calculation, so it is now ignored, making our resolution worse by the tune of 40usec (0.4%) worst case. At the same time, clean up some formatting and use NSEC_PER_SEC instead of 1000000000. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* Merge branch 'for-linus' of git://www.jni.nu/crisLinus Torvalds2010-06-015-29/+47
|\ | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://www.jni.nu/cris: CRIS: Don't use mask_irq as symbol name CRIS: Simplify param.h by simply including <asm-generic/param.h> CRISv10: Whitespace fixes for hw_settings.S CRISv10: Trivial fixes. CRISv32: Fix RS485 port 4 CD Kconfig item. CRISv32: Remove duplicated Kconfig items. cris: push down BKL into some device drivers
| * CRIS: Don't use mask_irq as symbol nameJesper Nilsson2010-05-251-4/+4
| | | | | | | | | | | | | | kernel/irq/chip.c now uses these, which lead to compile error for CRISv32. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
| * CRISv10: Whitespace fixes for hw_settings.SJesper Nilsson2010-05-251-8/+6
| | | | | | | | | | | | | | Remove trailing whitespace. Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
| * CRISv10: Trivial fixes.Jesper Nilsson2010-05-251-8/+7
| | | | | | | | | | | | | | | | - Removed CVS id tag. - Formatting fixes Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
| * cris: push down BKL into some device driversArnd Bergmann2010-04-292-9/+30
| | | | | | | | | | | | | | | | | | A number of cris specific device drivers still use the locked ->ioctl operation. Convert them to unlocked_ioctl with explicit lock_kernel calls. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* | fix handling of offsets in cris eeprom.c, get rid of fake on-stack filesAl Viro2010-05-221-14/+7
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | get rid of home-grown mutex in cris eeprom.cAl Viro2010-05-221-19/+8
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'timers-for-linus-cleanups' of ↵Linus Torvalds2010-05-201-35/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: avr32: Fix typo in read_persistent_clock() sparc: Convert sparc to use read/update_persistent_clock cris: Convert cris to use read/update_persistent_clock m68k: Convert m68k to use read/update_persistent_clock m32r: Convert m32r to use read/update_peristent_clock blackfin: Convert blackfin to use read/update_persistent_clock ia64: Convert ia64 to use read/update_persistent_clock avr32: Convert avr32 to use read/update_persistent_clock h8300: Convert h8300 to use read/update_persistent_clock frv: Convert frv to use read/update_persistent_clock mn10300: Convert mn10300 to use read/update_persistent_clock alpha: Convert alpha to use read/update_persistent_clock xtensa: Fix unnecessary setting of xtime time: Clean up direct xtime usage in xen
| * cris: Convert cris to use read/update_persistent_clockJohn Stultz2010-03-131-35/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the cris architecture to use the generic read_persistent_clock and update_persistent_clock interfaces, reducing the amount of arch specific code we have to maintain, and allowing for further cleanups in the future. I have not built or tested this patch, so help from arch maintainers would be appreciated. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1267675049-12337-14-git-send-email-johnstul@us.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-303-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-03-131-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits) doc: fix typo in comment explaining rb_tree usage Remove fs/ntfs/ChangeLog doc: fix console doc typo doc: cpuset: Update the cpuset flag file Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed Remove drivers/parport/ChangeLog Remove drivers/char/ChangeLog doc: typo - Table 1-2 should refer to "status", not "statm" tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h devres/irq: Fix devm_irq_match comment Remove reference to kthread_create_on_cpu tree-wide: Assorted spelling fixes tree-wide: fix 'lenght' typo in comments and code drm/kms: fix spelling in error message doc: capitalization and other minor fixes in pnp doc devres: typo fix s/dev/devm/ Remove redundant trailing semicolons from macros fix typo "definetly" -> "definitely" in comment tree-wide: s/widht/width/g typo in comments ... Fix trivial conflict in Documentation/laptops/00-INDEX
| * \ Merge branch 'for-next' into for-linusJiri Kosina2010-03-081-1/+1
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
| | * tree-wide: Assorted spelling fixesDaniel Mack2010-02-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | cris arch-v10: use generic ptrace_resume codeChristoph Hellwig2010-03-131-51/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT and PTRACE_KILL. This also makes PTRACE_SINGLESTEP return -EIO while it previously succeeded despite not actually causing any kind of single stepping. Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which it previously wasn't which is consistent with all architectures using the modern ptrace code. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Add generic sys_old_mmap()Christoph Hellwig2010-03-131-1/+1
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a generic implementation of the old mmap() syscall, which expects its argument in a memory block and switch all architectures over to use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-03-031-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: add __percpu sparse annotations to what's left percpu: add __percpu sparse annotations to fs percpu: add __percpu sparse annotations to core kernel subsystems local_t: Remove leftover local.h this_cpu: Remove pageset_notifier this_cpu: Page allocator conversion percpu, x86: Generic inc / dec percpu instructions local_t: Move local.h include to ringbuffer.c and ring_buffer_benchmark.c module: Use this_cpu_xx to dynamically allocate counters local_t: Remove cpu_local_xx macros percpu: refactor the code in pcpu_[de]populate_chunk() percpu: remove compile warnings caused by __verify_pcpu_ptr() percpu: make accessors check for percpu pointer in sparse percpu: add __percpu for sparse. percpu: make access macros universal percpu: remove per_cpu__ prefix.
| * | Merge branch 'master' into percpuTejun Heo2010-01-052-24/+1
| |\| | | | | | | | | | | | | | | | Conflicts: arch/powerpc/platforms/pseries/hvCall.S include/linux/percpu.h
| * | percpu: remove per_cpu__ prefix.Rusty Russell2009-10-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the return from alloc_percpu is compatible with the address of per-cpu vars, it makes sense to hand around the address of per-cpu variables. To make this sane, we remove the per_cpu__ prefix we used created to stop people accidentally using these vars directly. Now we have sparse, we can use that (next patch). tj: * Updated to convert stuff which were missed by or added after the original patch. * Kill per_cpu_var() macro. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
* | | Merge branch 'for-linus' of git://repo.or.cz/cris-mirrorLinus Torvalds2010-03-011-1/+1
|\ \ \ | |_|/ |/| | | | | | | | | | | * 'for-linus' of git://repo.or.cz/cris-mirror: cris: Fixup last users of irq_chip->typename CRIS v32: Should index be positive?
| * | cris: Fixup last users of irq_chip->typenameThomas Gleixner2009-11-191-1/+1
| |/ | | | | | | | | | | | | | | | | | | The typename member of struct irq_chip was kept for migration purposes and is obsolete since more than 2 years. Fix up the leftovers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mikael Starvik <starvik@axis.com> Cc: linux-cris-kernel@axis.com Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
* | CRIS: remove code that has been commented out for many yearsJiri Kosina2009-11-091-22/+0
| | | | | | | | | | | | | | | | Remove the dump_tlb_all() function that has been commented out for many years. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Jesper Nilsson <Jesper.Nilsson@axis.com>
* | CIRS: turn local_save_flags() + local_irq_disable()into local_irq_save()Jiri Kosina2009-11-091-2/+1
|/ | | | | | | | | | | This is a followup to my patches that fixed this all over the tree quite some time ago. This one went unnoticed for some reason. TLB handling for CRIS contains local_irq_disable() after local_save_flags(). Turn this into local_irq_save(). Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Jesper Nilsson <Jesper.Nilsson@axis.com>
* const: constify remaining file_operationsAlexey Dobriyan2009-10-021-1/+1
| | | | | | | | [akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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