- 15 Oct, 2007 33 commits
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Ingo Molnar authored
remove wait_runtime based fields and features, now that the CFS math has been changed over to the vruntime metric. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
Mike Galbraith <efault@gmx.de> Reviewed-by:
Thomas Gleixner <tglx@linutronix.de>
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Ingo Molnar authored
remove the wait_runtime-limit fields and the code depending on it, now that the math has been changed over to rely on the vruntime metric. Signed-off-by:
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Dmitry Adamushko authored
'struct load_stat' is redundant now so let's get rid of it. Signed-off-by:
Dmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by:
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Ingo Molnar authored
micro-optimization: update cfs_rq->exec_clock only if CONFIG_SCHED_DEBUG=y. Signed-off-by:
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Ingo Molnar authored
add more vruntime statistics. Signed-off-by:
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Peter Zijlstra authored
Handle vruntime overflow by centering the key space around min_vruntime. ( otherwise we could overflow 64-bit vruntime in a few days with SCHED_IDLE tasks - or in a few years with nice +19. ) Signed-off-by:
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Peter Zijlstra authored
add support for tree based vruntime averages. Signed-off-by:
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Ingo Molnar authored
remove SCHED_FEAT_SKIP_INITIAL - it was off by default and even when enabled it never made any real difference. Signed-off-by:
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Ingo Molnar authored
debug se->vruntime fields. Signed-off-by:
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Peter Zijlstra authored
clean up new task placement. Signed-off-by:
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Ingo Molnar authored
increase wakeup granularity - we were overscheduling a bit. Signed-off-by:
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Ingo Molnar authored
simplify the check_preempt() methods. Signed-off-by:
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Peter Zijlstra authored
simplify adaptive latency. Signed-off-by:
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Peter Zijlstra authored
add proper new task placement for the vruntime based math too. ( note: introduces a swap() macro, but the swap token is too widely used in the kernel namespace for a generic version to be added without changing non-scheduler code - so this cleanup will be done separately. ) Signed-off-by:
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Ingo Molnar authored
optimize vruntime based scheduling. Signed-off-by:
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Ingo Molnar authored
move sched_feat() definitions so that it can be used sooner by generic code too. Signed-off-by:
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Ingo Molnar authored
introduce se->vruntime as a sum of weighted delta-exec's, and use that as the key into the tree. the idea to use absolute virtual time as the basic metric of scheduling has been first raised by William Lee Irwin, advanced by Tong Li and first prototyped by Roman Zippel in the "Really Fair Scheduler" (RFS) patchset. also see: http://lkml.org/lkml/2007/9/2/76 for a simpler variant of this patch. Signed-off-by:
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Ingo Molnar authored
clean up calc_weighted() - we always use the normalized shift so it's not needed to pass that in. Also, push the non-nice0 branch into the function. Signed-off-by:
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Ingo Molnar authored
speed up update_load_add/_sub() by not delaying the division - this reduces CPU pipeline dependencies. Signed-off-by:
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Ingo Molnar authored
suggested by Roman Zippel: uninline __enqueue_entity() and __dequeue_entity(). this reduces code size: text data bss dec hex filename 25385 2386 16 27787 6c8b sched.o.before 25257 2386 16 27659 6c0b sched.o.after Signed-off-by: -
Peter Zijlstra authored
Peter Zijlstra suggested to simplify SCHED_FEAT_* checks via the sched_feat(x) macro. No code changed: text data bss dec hex filename 38895 3550 24 42469 a5e5 sched.o.before 38895 3550 24 42469 a5e5 sched.o.after Signed-off-by:
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Ingo Molnar authored
cleanup: simplify cfs_rq_curr() methods - now that the cfs_rq->curr pointer is unconditionally present, remove the wrappers. kernel/sched.o: text data bss dec hex filename 11784 224 2012 14020 36c4 sched.o.before 11784 224 2012 14020 36c4 sched.o.after Signed-off-by: -
Ingo Molnar authored
Noticed by Roman Zippel: use cfs_rq->curr in the !group-scheduling case too. Small micro-optimization and cleanup effect: text data bss dec hex filename 36269 3482 24 39775 9b5f sched.o.before 36177 3486 24 39687 9b07 sched.o.after Signed-off-by:
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Ingo Molnar authored
continued removal of precise CPU load calculations. Signed-off-by:
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Ingo Molnar authored
CPU load calculations are statistical anyway, and there's little benefit from having it calculated on every scheduling event. So remove this code, it gets rid of a divide from the scheduler wakeup and context-switch fastpath. Signed-off-by:
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Ingo Molnar authored
remove the stat_gran code - it was disabled by default and it causes unnecessary overhead. Signed-off-by:
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Ingo Molnar authored
use constants if !CONFIG_SCHED_DEBUG. this speeds up the code and reduces code-size: text data bss dec hex filename 27464 3014 16 30494 771e sched.o.before 26929 3010 20 29959 7507 sched.o.after Signed-off-by: -
Ingo Molnar authored
use the same defaults on both UP and SMP. Signed-off-by:
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Ingo Molnar authored
track the maximum amount of time a task has executed while the CPU load was at least 2x. (i.e. at least two nice-0 tasks were runnable) Signed-off-by:
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Ingo Molnar authored
small kernel/sched_debug.c cleanup - break up multi-variable assignment. no code changed: text data bss dec hex filename 38869 3550 24 42443 a5cb sched.o.before 38869 3550 24 42443 a5cb sched.o.after Signed-off-by:
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Matthias Kaehlcke authored
Use list_for_each_entry_safe() instead of list_for_each_safe() in __wake_up_common() Signed-off-by:
Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by:
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Ingo Molnar authored
to get full child-runs-first semantics make sure the parent is rescheduled. Signed-off-by:
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Ingo Molnar authored
fix the sched_child_runs_first flag: always call into ->task_new() if we are on the same CPU, as SCHED_OTHER tasks depend on it for correct initial setup. Signed-off-by:
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- 14 Oct, 2007 7 commits
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David Brownell authored
Make sure the mmc_spi driver can build without CONFIG_BLOCK. Issue noted by "Avuton Olrich" <avuton@gmail.com> and randconfig. While that won't be a common configuration, sometimes embedded boards use SDIO to interface WLAN or Bluetooth chips (vs some parallel interface), and don't provide an MMC/SD socket for use with flash memory cards. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86: x86: force timer broadcast on late AMD C1E detection x86: move local APIC timer init to the end of start_secondary() clockevents: introduce force broadcast notifier x86: fix missing include for vsyscall
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Stephen Hemminger authored
The call to napi_disable() in the PCI shutdown handler is problematic, and is aggravated by the new NAPI. Also, make sure watchdog timer doesn't go off. Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Thomas Gleixner authored
The 64bit SMP bootup is slightly different to the 32bit one. It enables the boot CPU local APIC timer before all CPUs are brought up. Some AMD C1E systems have the C1E feature flag only set in the secondary CPU. Due to the early enable of the boot CPU local APIC timer the APIC timer is registered as a fully functional device. When we detect the wreckage during the bringup of the secondary CPU, we need to force the boot CPU into broadcast mode. Check the C1E caused APIC timer disable, when the secondary APIC timer is initialized. If the boot CPU APIC timer was registered as a functional clock event device, then fix this up and utilize the CLOCK_EVT_NOTIFY_BROADCAST_FORCE mechanism to force the already registered boot CPU APIC timer into broadcast mode. Tested by force injecting the failure mode. Signed-off-by: -
Thomas Gleixner authored
Preparatory patch for the AMD C1E wreckage fixup. Signed-off-by: -
Thomas Gleixner authored
The 64bit SMP bootup is slightly different to the 32bit one. It enables the boot CPU local APIC timer before all CPUs are brought up. Some AMD C1E systems have the C1E feature flag only set in the secondary CPU. Due to the early enable of the boot CPU local APIC timer the APIC timer is registered as a fully functional device. When we detect the wreckage during the bringup of the secondary CPU, we need to force the boot CPU into broadcast mode. Add a new notifier reason and implement the force broadcast in the clock events layer. Signed-off-by: -
Dave Jones authored
> Maybe I just picked a bad time to try, but... > > arch/x86/kernel/alternative.c: In function 'apply_alternatives': > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_START' undeclared (first use in this function) > arch/x86/kernel/alternative.c:191: error: (Each undeclared identifier is reported only once > arch/x86/kernel/alternative.c:191: error: for each function it appears in.) > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_END' undeclared (first use in this function) > make[1]: *** [arch/x86/kernel/alternative.o] Error 1 > make: *** [arch/x86/kernel] Error 2 Try this. Include missing header for vsyscall. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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