- 23 Mar, 2006 40 commits
-
-
Jes Sorensen authored
Convert from semaphore to mutex. Untested as I have no access to a floppy drive at the moment. Signed-off-by:
Jes Sorensen <jes@sgi.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Cc: Jens Axboe <axboe@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
-
Jes Sorensen authored
Convert to use mutex from a semaphore Signed-off-by:
-
Arjan van de Ven authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
Arjan van de Ven <arjan@infradead.org> Signed-off-by:
-
Jes Sorensen authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
-
Arjan van de Ven authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
-
Arjan van de Ven authored
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by:
-
Ingo Molnar authored
Convert fs/9p/mux.c from semaphore to mutex. NOTE: fixed locking bugs in the process - the code was using semaphores the other way around. Signed-off-by:
-
Ingo Molnar authored
Convert kernel/rcupdate's rcu_barrier_sema to mutex. Signed-off-by:
"Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
-
Ingo Molnar authored
convert cpuset.c's callback_sem and manage_sem to mutexes. Build and boot tested by Ingo. Build, boot, unit and stress tested by pj. Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
-
Jan Kara authored
When quota is being turned off we assumed that all the references to dquots were already dropped. That need not be true as inodes being deleted are not on superblock's inodes list and hence we need not reach it when removing quota references from inodes. So invalidate_dquots() has to wait for all the users of dquots (as quota is already marked as turned off, no new references can be acquired and so this is bound to happen rather early). When we do this, we can also remove the iprune_sem locking as it was protecting us against exactly the same problem when freeing inodes icache memory. Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
-
Kyle McMartin authored
Seems like needless clutter having a bunch of #if defined(CONFIG_$ARCH) in include/linux/cache.h. Move the per architecture section definition to asm/cache.h, and keep the if-not-defined dummy case in linux/cache.h to catch architectures which don't implement the section. Verified that symbols still go in .data.read_mostly on parisc, and the compile doesn't break. Signed-off-by:
Kyle McMartin <kyle@parisc-linux.org> Signed-off-by:
-
Christoph Hellwig authored
Since early 2.4.x all cdrom drivers implement the block_device methods themselves, so they can handle additional ioctls directly instead of going through the cdrom layer. Signed-off-by:
Christoph Hellwig <hch@lst.de> Acked-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
-
Christoph Hellwig authored
Add a small helper for each ioctl to cut down cdrom_ioctl to a readable size. Signed-off-by:
Benoit Boissinot <benoit.boissinot@ens-lyon.org> Signed-off-by:
-
Ravikiran G Thirumalai authored
Avoid taking the global tasklist_lock when possible, if a process is single threaded during getrusage(). Any avoidance of tasklist_lock is good for NUMA boxes (and possibly for large SMPs). Thanks to Oleg Nesterov for review and suggestions. Signed-off-by:
Nippun Goel <nippung@calsoftinc.com> Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Signed-off-by:
-
Eric Dumazet authored
1) Reduce the size of (struct fdtable) to exactly 64 bytes on 32bits platforms, lowering kmalloc() allocated space by 50%. 2) Reduce the size of (files_struct), using a special 32 bits (or 64bits) embedded_fd_set, instead of a 1024 bits fd_set for the close_on_exec_init and open_fds_init fields. This save some ram (248 bytes per task) as most tasks dont open more than 32 files. D-Cache footprint for such tasks is also reduced to the minimum. 3) Reduce size of allocated fdset. Currently two full pages are allocated, that is 32768 bits on x86 for example, and way too much. The minimum is now L1_CACHE_BYTES. UP and SMP should benefit from this patch, because most tasks will touch only one cache line when open()/close() stdin/stdout/stderr (0/1/2), (next_fd, close_on_exec_init, open_fds_init, fd_array[0 .. 2] being in the same cache line) Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
-
Andrew Morton authored
Linus points out that ext3_readdir's readahead only cuts in when ext3_readdir() is operating at the very start of the directory. So for large directories we end up performing no readahead at all and we suck. So take it all out and use the core VM's page_cache_readahead(). This means that ext3 directory reads will use all of readahead's dynamic sizing goop. Note that we're using the directory's filp->f_ra to hold the readahead state, but readahead is actually being performed against the underlying blockdev's address_space. Fortunately the readahead code is all set up to handle this. Tested with printk. It works. I was struggling to find a real workload which actually cared. (The patch also exports page_cache_readahead() to GPL modules) Cc: "Stephen C. Tweedie" <sct@redhat.com> Signed-off-by:
-
Jean Delvare authored
Use the standard BCD macros instead of redefining them. Signed-off-by:
Jean Delvare <khali@linux-fr.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
-
Luca Tettamanti authored
Add the SNAPSHOT_S2RAM ioctl to the snapshot device. This ioctl allows a userland application to make the system (previously frozen with the SNAPSHOT_FREE ioctl) enter the S3 state without freezing processes and disabling nonboot CPUs for the second time. This will allow us to implement the suspend-to-disk-and-RAM (STDR) functionality in the userland suspend tools. Signed-off-by:
Luca Tettamanti <kronos.it@gmail.com> Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
Rafael J. Wysocki authored
Remove the console-switching code from the suspend part of the swsusp userland interface and let the userland tools switch the console. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
-
Rafael J. Wysocki authored
It is unsafe to suspend devices if the hardware is controlled by X. Add an extra check to prevent this from happening. Signed-off-by:
-
Shaohua Li authored
Highmem could be in pcp list as well. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Acked-by:
Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by:
-
Rafael J. Wysocki authored
This patch from Pavel moves userland freeze signals handling into more logical place. It now hits even with mysqld running. Signed-off-by:
-
Pavel Machek authored
Combination of printk/pr_debug led to <7> in the middle of the line, and we printed way too many dots. Signed-off-by:
-
Rafael J. Wysocki authored
Allow swsusp to freeze processes successfully under heavy load by freezing userspace processes before kernel threads. [Thanks to Nigel Cunningham <nigel@suspend2.net> for suggesting the way to go.] Signed-off-by:
-
Rafael J. Wysocki authored
This patch introduces a user space interface for swsusp. The interface is based on a special character device, called the snapshot device, that allows user space processes to perform suspend and resume-related operations with the help of some ioctls and the read()/write() functions. Additionally it allows these processes to allocate free swap pages from a selected swap partition, called the resume partition, so that they know which sectors of the resume partition are available to them. The interface uses the same low-level system memory snapshot-handling functions that are used by the built-it swap-writing/reading code of swsusp. The interface documentation is included in the patch. The patch assumes that the major and minor numbers of the snapshot device will be 10 (ie. misc device) and 231, the registration of which has already been requested. Signed-off-by:
-
Pavel Machek authored
Update suspend-to-RAM documentation with new machines, and makes message when processes can't be stopped little clearer. (In one case, waiting longer actually did help). From: "Rafael J. Wysocki" <rjw@sisk.pl> Warn in the documentation that data may be lost if there are some filesystems mounted from USB devices before suspend. [Thanks to Alan Stern for providing the answer to the question in the Q:-A: part.] Signed-off-by:
-
Randy Dunlap authored
Move externs from C source files to header files. Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
Rafael J. Wysocki authored
Move the swap-writing/reading code of swsusp to a separate file. Signed-off-by:
-
Rafael J. Wysocki authored
Introduce the low level interface that can be used for handling the snapshot of the system memory by the in-kernel swap-writing/reading code of swsusp and the userland interface code (to be introduced shortly). Also change the way in which swsusp records the allocated swap pages and, consequently, simplifies the in-kernel swap-writing/reading code (this is necessary for the userland interface too). To this end, it introduces two helper functions in mm/swapfile.c, so that the swsusp code does not refer directly to the swap internals. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
-
Andrew Morton authored
This was a temporary thing for 2.6.16. Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
Ashok Raj authored
Don't create "online" control file for BSP (i386/x86_64) since its not removable. We originally added this to support ppc64 if the kernel has support but BIOS indicated no offline support, we just didnt create online files for them. We used the same method in ia64 as well, if we have a cpu taking platform interrupts but cannot be removed if those interrupts cannot be re-targeted to another cpu. Signed-off-by:
Ashok Raj <ashok.raj@intel.com> Signed-off-by:
-
Markus Gutschke authored
Gcc reserves %ebx when compiling position-independent-code on i386. This means, the _syscallX() macros in include/asm-i386/unistd.h will not compile. This patch is changes the existing macros to take special care to preserve %ebx. The bug can be tracked at http://bugzilla.kernel.org/show_bug.cgi?id=6204Signed-off-by:
Markus Gutschke <markus@google.com> Signed-off-by:
-
Adrian Bunk authored
You must always ensure to fulfill the dependencies of what you are select'ing. Signed-off-by:
-
Chuck Ebbert authored
_raw_spin_lock_flags() is entered with interrupts disabled. If it cannot obtain a spinlock, it checks the flags that were passed and re-enables interrupts before spinning if that's how the flags are set. When the spinlock might be available, it disables interrupts (even if they are already disabled) before trying to get the lock. Change that so interrupts are only disabled if they have been enabled. This costs nine bytes of duplicated spinloop code. Fastpath before patch: jle <keep looping> not-taken conditional jump cli disable interrupts jmp <try for lock> unconditional jump Fastpath after patch, if interrupts were not enabled: jg <try for lock> taken conditional branch Signed-off-by:Chuck Ebbert <76306.1226@compuserve.com> Acked-by:
-
Shaohua Li authored
Checking APIC version instead of CPU family to determine XAPIC. Family 6 CPU could have xapic as well. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: "Seth, Rohit" <rohit.seth@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
-
Shaohua Li authored
Detecting cache line using cpuid.4, cpuid level 4 is enough. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: "Seth, Rohit" <rohit.seth@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
-
Chuck Ebbert authored
i386 has a small bug in the stack dump code where it prints an extra log level code. Remove that and fix the alignment of normal stack dump printout. Also remove some unnecessary printk() calls. Signed-off-by:
-
Jan Beulich authored
With cpu_gdt_descr having been converted to per-CPU data, the old object (in head.S) no longer needs to reserve space for each CPU's instance. With cpu_gdt_table not being used for CPU 0 anymore, it doesn't seem to need page alignment (or if in fact there is a need for it to retain that alignment, the whole object should go into .data.page_align). Signed-off-by:
Jan Beulich <jbeulich@novell.com> Acked-by:
Zachary Amsden <zach@vmware.com> Signed-off-by:
-
Jesper Juhl authored
arch/i386/kernel/cpu/centaur.c: In function `centaur_mcr_insert': arch/i386/kernel/cpu/centaur.c:33: warning: implicit declaration of function `mtrr_centaur_report_mcr' Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
-
Jesper Juhl authored
arch/i386/kernel/apic.c:840: warning: implicit declaration of function `GET_APIC_ID' Signed-off-by:
-
