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* sched: remove the 'u64 now' parameter from ->enqueue_task()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from ->enqueue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_curr_rt()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_curr_rt(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from put_prev_entity()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from put_prev_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from pick_next_entity()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from pick_next_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from set_next_entity()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from set_next_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from dequeue_entity()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from dequeue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from enqueue_entity()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from enqueue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from enqueue_sleeper()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from __enqueue_sleeper()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from __enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_curr_end()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_curr_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_dequeue()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_dequeue(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_curr_start()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_curr_start(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_wait_end()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_wait_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from __update_stats_wait_end()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from __update_stats_wait_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_enqueue()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_enqueue(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_stats_wait_start()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_stats_wait_start(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from update_curr()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from update_curr(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove the 'u64 now' parameter from print_cfs_rq()Ingo Molnar2007-08-09
| | | | | | | | remove the 'u64 now' parameter from print_cfs_rq(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove 'now' use from assignmentsIngo Molnar2007-08-09
| | | | | | | | | | change all 'now' timestamp uses in assignments to rq->clock. ( this is an identity transformation that causes no functionality change: all such new rq->clock is necessarily preceded by an update_rq_clock() call. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove __rq_clock()Ingo Molnar2007-08-09
| | | | | | remove the (now unused) __rq_clock() function. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: eliminate __rq_clock() useIngo Molnar2007-08-09
| | | | | | | | | | | eliminate __rq_clock() use by changing it to: __update_rq_clock(rq) now = rq->clock; identity transformation - no change in behavior. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove rq_clock()Ingo Molnar2007-08-09
| | | | | | remove the now unused rq_clock() function. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: eliminate rq_clock() useIngo Molnar2007-08-09
| | | | | | | | | | | eliminate rq_clock() use by changing it to: update_rq_clock(rq) now = rq->clock; identity transformation - no change in behavior. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: add [__]update_rq_clock(rq)Ingo Molnar2007-08-09
| | | | | | | | add the [__]update_rq_clock(rq) functions. (No change in functionality, just reorganization to prepare for elimination of the heavy 64-bit timestamp-passing in the scheduler.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: fix bug in balance_tasks()Peter Williams2007-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are two problems with balance_tasks() and how it used: 1. The variables best_prio and best_prio_seen (inherited from the old move_tasks()) were only required to handle problems caused by the active/expired arrays, the order in which they were processed and the possibility that the task with the highest priority could be on either. These issues are no longer present and the extra overhead associated with their use is unnecessary (and possibly wrong). 2. In the absence of CONFIG_FAIR_GROUP_SCHED being set, the same this_best_prio variable needs to be used by all scheduling classes or there is a risk of moving too much load. E.g. if the highest priority task on this at the beginning is a fairly low priority task and the rt class migrates a task (during its turn) then that moved task becomes the new highest priority task on this_rq but when the sched_fair class initializes its copy of this_best_prio it will get the priority of the original highest priority task as, due to the run queue locks being held, the reschedule triggered by pull_task() will not have taken place. This could result in inappropriate overriding of skip_for_load and excessive load being moved. The attached patch addresses these problems by deleting all reference to best_prio and best_prio_seen and making this_best_prio a reference parameter to the various functions involved. load_balance_fair() has also been modified so that this_best_prio is only reset (in the loop) if CONFIG_FAIR_GROUP_SCHED is set. This should preserve the effect of helping spread groups' higher priority tasks around the available CPUs while improving system performance when CONFIG_FAIR_GROUP_SCHED isn't set. Signed-off-by: Peter Williams <pwil3058@bigpond.net.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: document nice levelsIngo Molnar2007-08-09
| | | | | | Document the design thinking behind nice levels. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: remove binary sysctls from kernel.sched_domainAlexey Dobriyan2007-08-09
| | | | | | | | | kernel.sched_domain hierarchy is under CTL_UNNUMBERED and thus unreachable to sysctl(2). Generating .ctl_number's in such situation is not useful. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: delta_exec accounting fixIngo Molnar2007-08-09
| | | | | | | small delta_exec accounting fix: increase delta_exec and increase sum_exec_runtime even if the task is not on the runqueue anymore. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: clean up delta_mineIngo Molnar2007-08-09
| | | | | | | | | | | | cleanup: delta_mine is an unsigned value. no code impact: text data bss dec hex filename 27823 2726 16 30565 7765 sched.o.before 27823 2726 16 30565 7765 sched.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: schedule() speedupIngo Molnar2007-08-09
| | | | | | | | | | speed up schedule(): share the 'now' parameter that deactivate_task() was calculating internally. ( this also fixes the small accounting window between the deactivate call and the pick_next_task() call. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: uninline rq_clock()Ingo Molnar2007-08-09
| | | | | | | | | | uninline rq_clock() to save 263 bytes of code: text data bss dec hex filename 39561 3642 24 43227 a8db sched.o.before 39298 3642 24 42964 a7d4 sched.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: mark print_cfs_stats staticJosh Triplett2007-08-09
| | | | | | | | | | | | | sched_fair.c defines print_cfs_stats, and sched_debug.c uses it, but sched.c includes both sched_fair.c and sched_debug.c, so all the references to print_cfs_stats occur in the same compilation unit. Thus, mark print_cfs_stats static. Eliminates a sparse warning: warning: symbol 'print_cfs_stats' was not declared. Should it be static? Signed-off-by: Josh Triplett <josh@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: clean up sched_getaffinity()Ulrich Drepper2007-08-09
| | | | | | | | | here's another tiny cleanup. The generated code is not affected (gcc is smart enough) but for people looking over the code it is just irritating to have the extra conditional. Signed-off-by: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: mention CONFIG_SCHED_DEBUG in documentationThomas Voegtle2007-08-09
| | | | | | a little hint to switch on CONFIG_SCHED_DEBUG should be given. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: simplify move_tasks()Peter Williams2007-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The move_tasks() function is currently multiplexed with two distinct capabilities: 1. attempt to move a specified amount of weighted load from one run queue to another; and 2. attempt to move a specified number of tasks from one run queue to another. The first of these capabilities is used in two places, load_balance() and load_balance_idle(), and in both of these cases the return value of move_tasks() is used purely to decide if tasks/load were moved and no notice of the actual number of tasks moved is taken. The second capability is used in exactly one place, active_load_balance(), to attempt to move exactly one task and, as before, the return value is only used as an indicator of success or failure. This multiplexing of sched_task() was introduced, by me, as part of the smpnice patches and was motivated by the fact that the alternative, one function to move specified load and one to move a single task, would have led to two functions of roughly the same complexity as the old move_tasks() (or the new balance_tasks()). However, the new modular design of the new CFS scheduler allows a simpler solution to be adopted and this patch addresses that solution by: 1. adding a new function, move_one_task(), to be used by active_load_balance(); and 2. making move_tasks() a single purpose function that tries to move a specified weighted load and returns 1 for success and 0 for failure. One of the consequences of these changes is that neither move_one_task() or the new move_tasks() care how many tasks sched_class.load_balance() moves and this enables its interface to be simplified by returning the amount of load moved as its result and removing the load_moved pointer from the argument list. This helps simplify the new move_tasks() and slightly reduces the amount of work done in each of sched_class.load_balance()'s implementations. Further simplification, e.g. changes to balance_tasks(), are possible but (slightly) complicated by the special needs of load_balance_fair() so I've left them to a later patch (if this one gets accepted). NB Since move_tasks() gets called with two run queue locks held even small reductions in overhead are worthwhile. [ mingo@elte.hu ] this change also reduces code size nicely: text data bss dec hex filename 39216 3618 24 42858 a76a sched.o.before 39173 3618 24 42815 a73f sched.o.after Signed-off-by: Peter Williams <pwil3058@bigpond.net.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: reorder update_cpu_load(rq) with the ->task_tick() callIngo Molnar2007-08-09
| | | | | | | | | Peter Williams suggested to flip the order of update_cpu_load(rq) with the ->task_tick() call. This is a NOP for the current scheduler (the two functions are independent of each other), ->task_tick() might create some state for update_cpu_load() in the future (or in PlugSched). Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: batch sleeper bonusIngo Molnar2007-08-09
| | | | | | | | | | | batch up the sleeper bonus sum a bit more. Anything below sched-granularity is too small to make a practical difference anyway. this optimization reduces the math in high-frequency scheduling scenarios. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-08-06
|\ | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] rpc: update defconfig [ARM] pata_icside: fix the FIXMEs [ARM] 4542/1: AT91: include atmel_lcdc.h in at91sam926{1,3}_devices.c [ARM] 4541/1: iop: defconfig updates [ARM] 4531/1: remove is_in_rom() protptype
| * [ARM] rpc: update defconfigRussell King2007-08-06
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] pata_icside: fix the FIXMEsRussell King2007-08-06
| | | | | | | | | | | | | | | | | | | | | | | | Alan Cox suggested that the solution to the FIXMEs in pata_icside is to use a private postreset method to detect the lack of devices on a port, and in such a case, disable the interrupt for the port. This patch implements such a method, and removes the hard coded disable of port 0. Tested as working. Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 4542/1: AT91: include atmel_lcdc.h in at91sam926{1,3}_devices.cJan Altenberg2007-08-04
| | | | | | | | | | | | | | - Include atmel_lcdc.h in at91sam926{1,3}_devices.c Signed-off-by: Jan Altenberg <jan.altenberg@linutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 4541/1: iop: defconfig updatesDan Williams2007-08-04
| | | | | | | | | | | | | | | | | | | | With the availability of the iop-adma driver iop platforms can now use their offload engines for md-raid5 (copy+xor) and net-dma (tcp receive copy) offload. Cc: Lennert Buytenhek <kernel@wantstofly.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 4531/1: remove is_in_rom() protptypeGreg Ungerer2007-08-04
| | | | | | | | | | | | | | Remove unused is_in_rom() function prototype. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2007-08-06
|\ \ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: [CRYPTO] api: fix writting into unallocated memory in setkey_aligned
| * | [CRYPTO] api: fix writting into unallocated memory in setkey_alignedSebastian Siewior2007-08-06
| |/ | | | | | | | | | | | | | | | | setkey_unaligned() commited in ca7c39385ce1a7b44894a4b225a4608624e90730 overwrites unallocated memory in the following memset() because I used the wrong buffer length. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | take sched_debug.c out of nasal demon territoryAl Viro2007-08-06
| | | | | | | | | | | | | | | | C99 6.10.3[11]: preprocessing directive within the argument list of macro invocation => undefined behaviour. Don't do that... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Enable lguest drivers in KconfigRusty Russell2007-08-06
| | | | | | | | | | | | | | | | | | Lguest drivers need to default to "Y" otherwise they're never selected for new builds. (We don't bother prompting, because they're less than 4k combined, and implied by selecting lguest support). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | KVM: x86 emulator: fix debug reg mov instructionsAvi Kivity2007-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | More fallout from the writeback fixes: debug register transfer instructions do their own writeback and thus need to disable the general writeback mechanism. This fixes oopses and some guest failures on AMD machines (the Intel variant decodes the instruction in hardware and thus does not need emulation). Cc: Alistair John Strachan <alistair@devzero.co.uk> Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'master' of ↵Linus Torvalds2007-08-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NETFILTER]: Add xt_statistic.h to the header list for usermode programs [BNX2]: Fix suspend/resume problem. [TG3]: Fix suspend/resume problem.
| * | [NETFILTER]: Add xt_statistic.h to the header list for usermode programsChuck Ebbert2007-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add xt_statistic.h to the list of headers to install. Apparently needed to build newer versions of iptables. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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