01 Aug, 2007
1 commit
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Fix kernel-doc warnings in sched.c:
Warning(linux-2623-rc1g4//kernel/sched.c:1685): No description found for parameter 'notifier'
Warning(linux-2623-rc1g4//kernel/sched.c:1696): No description found for parameter 'notifier'
Warning(linux-2623-rc1g4//kernel/sched.c:1750): No description found for parameter 'prev'Signed-off-by: Randy Dunlap
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
31 Jul, 2007
1 commit
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This helps people when debugging problems like the ones that were in the
recent -mm releases.Signed-off-by: Greg Kroah-Hartman
30 Jul, 2007
3 commits
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Restore the 2.6.22 CONFIG_ACPI_SLEEP build option, but now shadowing the
new CONFIG_PM_SLEEP option.Signed-off-by: Len Brown
[ Modified to work with the PM config setup changes. ]
Signed-off-by: Linus Torvalds -
Introduce CONFIG_SUSPEND representing the ability to enter system sleep
states, such as the ACPI S3 state, and allow the user to choose SUSPEND
and HIBERNATION independently of each other.Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has
been chosen and the kernel is intended for SMP systems.Also, introduce CONFIG_PM_SLEEP which is automatically selected if
CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the
code needed for both suspend and hibernation.The top-level power management headers and the ACPI code related to
suspend and hibernation are modified to use the new definitions (the
changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce
the number of ifdefs).There are many other files in which CONFIG_PM can be replaced with
CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in
the future.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Linus Torvalds -
Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid
confusion (among other things, with CONFIG_SUSPEND introduced in the
next patch).Signed-off-by: Rafael J. Wysocki
Signed-off-by: Linus Torvalds
29 Jul, 2007
2 commits
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copy_from_user() returns the number of bytes not copied, hence 0 is the
expected output.axi->mm might not be valid anymore when not equal to current->mm, do not
dereference before checking that - thanks to Al for spotting that.Signed-off-by: Peter Zijlstra
Tested-by: Steve Grubb
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Acked-by: Jeff Garzik
Signed-off-by: Linus Torvalds
27 Jul, 2007
3 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
[PATCH] sched: debug feature - make the sched-domains tree runtime-tweakable
[PATCH] sched: add above_background_load() function
[PATCH] sched: update Documentation/sched-stats.txt
[PATCH] sched: mark sysrq_sched_debug_show() static
[PATCH] sched: make cpu_clock() not use the rq clock
[PATCH] sched: remove unused rq->load_balance_class
[PATCH] sched: arch preempt notifier mechanism
[PATCH] sched: increase SCHED_LOAD_SCALE_FUZZ -
Commit bd804eba1c8597cbb7cd5a5f9fe886aae16a079a ("PM: Introduce
pm_power_off_prepare") caused problems in the poweroff path, as reported by
YOSHIFUJI Hideaki / 吉藤英明.Generally, sysdev_shutdown() should be called after the ACPI preparation for
powering the system off. To make it happen, we can separate sysdev_shutdown()
from device_shutdown() and call it directly wherever necessary.Signed-off-by: Rafael J. Wysocki
Tested-by: YOSHIFUJI Hideaki / 吉藤英明
Signed-off-by: Linus Torvalds -
Fix kmod.c:
Warning(linux-2.6.23-rc1//kernel/kmod.c:364): No description found for parameter 'envp'Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jul, 2007
8 commits
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debugging feature: make the sched-domains tree runtime-tweakable.
Signed-off-by: Andrew Morton
[ mingo@elte.hu: made it depend on CONFIG_SCHED_DEBUG & small updates ]
Signed-off-by: Ingo Molnar -
Only sched.c uses sysrq_sched_debug_show, and sched.c includes sched_debug.c,
so all uses of sysrq_sched_debug_show occur in the same source file.Eliminates a sparse warning:
warning: symbol 'sysrq_sched_debug_show' was not declared. Should it be static?Signed-off-by: Josh Triplett
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar -
it is enough to disable interrupts to get the precise rq-clock
of the local CPU.this also solves an NMI watchdog regression: the NMI watchdog
calls touch_softlockup_watchdog(), which might deadlock on
rq->lock if the NMI hits an rq-locked critical section.Signed-off-by: Ingo Molnar
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Remove unused rq->load_balance_class.
Signed-off-by: Satoru Takeuchi
Signed-off-by: Ingo Molnar -
This adds a general mechanism whereby a task can request the scheduler to
notify it whenever it is preempted or scheduled back in. This allows the
task to swap any special-purpose registers like the fpu or Intel's VT
registers.Signed-off-by: Avi Kivity
[ mingo@elte.hu: fixes, cleanups ]
Signed-off-by: Ingo Molnar -
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from source
ACPI: quiet ACPI Exceptions due to no _PTC or _TSS
ACPI: Remove references to ACPI_STATE_S2 from acpi_pm_enter
ACPI: Kconfig: always enable CONFIG_ACPI_SLEEP on X86
ACPI: Kconfig: fold /proc/acpi/sleep under CONFIG_ACPI_PROCFS
ACPI: Kconfig: CONFIG_ACPI_PROCFS now defaults to N
ACPI: autoload modules - Create __mod_acpi_device_table symbol for all ACPI drivers
ACPI: autoload modules - Create ACPI alias interface
ACPI: autoload modules - ACPICA modifications
ACPI: asus-laptop: Fix failure exits
ACPI: fix oops due to typo in new throttling code
ACPI: ignore _PSx method for hotplugable PCI devices
ACPI: Use ACPI methods to select PCI device suspend state
ACPI, PNP: hook ACPI D-state to PNP suspend/resume
ACPI: Add acpi_pm_device_sleep_state helper routine
ACPI: Implement the set_target() callback from pm_ops -
This avoids xtime lag seen with dynticks, because while 'xtime' itself
is still not updated often, we keep a 'xtime_cache' variable around that
contains the approximate real-time that _is_ updated each time we do a
'update_wall_time()', and is thus never off by more than one tick.IOW, this restores the original semantics for 'xtime' users, as long as
you use the proper abstraction functions (ie 'current_kernel_time()' or
'get_seconds()' depending on whether you want a timespec or just the
seconds field).[ Updated Patch. As penance for my sins I've also yanked another #ifdef
that was added to avoid the xtime lag w/ hrtimers. ]Signed-off-by: John Stultz
Cc: Ingo Molnar
Cc: Thomas Gleixner
Signed-off-by: Linus Torvalds -
This avoids use of the kernel-internal "xtime" variable directly outside
of the actual time-related functions. Instead, use the helper functions
that we already have available to us.This doesn't actually change any behaviour, but this will allow us to
fix the fact that "xtime" isn't updated very often with CONFIG_NO_HZ
(because much of the realtime information is maintained as separate
offsets to 'xtime'), which has caused interfaces that use xtime directly
to get a time that is out of sync with the real-time clock by up to a
third of a second or so.Signed-off-by: John Stultz
Cc: Ingo Molnar
Cc: Thomas Gleixner
Signed-off-by: Linus Torvalds
25 Jul, 2007
1 commit
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As it was a synonym for (CONFIG_ACPI && CONFIG_X86),
the ifdefs for it were more clutter than they were worth.For ia64, just add a few stubs in anticipation of future
S3 or S4 support.Signed-off-by: Len Brown
23 Jul, 2007
2 commits
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* 'audit.b39' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
[PATCH] get rid of AVC_PATH postponed treatment
[PATCH] allow audit filtering on bit & operations
[PATCH] audit: fix broken class-based syscall audit
[PATCH] Make IPC mode consistent -
This patch makes the i386 behave the same way that x86_64 does when a
segfault happens. A line gets printed to the kernel log so that tools
that need to check for failures can behave more uniformly between
debug.show_unhandled_signals sysctl variable to 0 (or by doing echo 0 >
/proc/sys/debug/exception-trace)Also, all of the lines being printed are now using printk_ratelimit() to
deny the ability of DoS from a local user with a program like the
following:main()
{
while (1)
if (!fork()) *(int *)0 = 0;
}This new revision also includes the fix that Andrew did which got rid of
new sysctl that was added to the system in earlier versions of this.
Also, 'show-unhandled-signals' sysctl has been renamed back to the old
'exception-trace' to avoid breakage of people's scripts.AK: Enabling by default for i386 will be likely controversal, but let's see what happens
AK: Really folks, before complaining just fix your segfaults
AK: I bet this will find a lot of silent issuesSigned-off-by: Masoud Sharbiani
Signed-off-by: Andi Kleen
[ Personally, I've found the complaints useful on x86-64, so I'm all for
this. That said, I wonder if we could do it more prettily.. -Linus ]
Signed-off-by: Linus Torvalds
22 Jul, 2007
12 commits
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Selinux folks had been complaining about the lack of AVC_PATH
records when audit is disabled. I must admit my stupidity - I assumed
that avc_audit() really couldn't use audit_log_d_path() because of
deadlocks (== could be called with dcache_lock or vfsmount_lock held).
Shouldn't have made that assumption - it never gets called that way.
It _is_ called under spinlocks, but not those.Since audit_log_d_path() uses ab->gfp_mask for allocations,
kmalloc() in there is not a problem. IOW, the simple fix is sufficient:
let's rip AUDIT_AVC_PATH out and simply generate pathname as part of main
record. It's trivial to do.Signed-off-by: Al Viro
Acked-by: James Morris -
Right now the audit filter can match on = != > < >= blah blah blah.
This allow the filter to also look at bitwise AND operations, &Signed-off-by: Eric Paris
Signed-off-by: Al Viro -
The sanity check in audit_match_class() is wrong. We are able to audit
2048 syscalls but in audit_match_class() we were accidentally using
sizeof(_u32) instead of number of bits in _u32 when deciding how many
syscalls were valid. On ia64 in particular we were hitting syscall
numbers over the (wrong) limit of 256. Fixing the audit_match_class
check takes care of the problem.Signed-off-by: Klaus Weidner
Signed-off-by: Al Viro -
The mode fields for IPC records are not consistent. Some are hex, others are
octal. This patch makes them all octal.Signed-off-by: Steve Grubb
Signed-off-by: Al Viro -
Signed-off-by: Nigel Cunningham
Cc: Randy Dunlap
Cc: "Rafael J. Wysocki"
Cc: Pavel Machek
Acked-by: Linus Torvalds
Signed-off-by: Andrew Morton
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
Otherwise smp_affinity would only update after the next interrupt
on x86 systems.Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
i386 and sparc64 have the identical code to update the cmos clock. Move it
into kernel/time/ntp.c as there are other architectures coming along with the
same requirements.[akpm@linux-foundation.org: build fixes]
Signed-off-by: Thomas Gleixner
Cc: Chris Wright
Cc: Ingo Molnar
Cc: john stultz
Cc: David Miller
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Speedup hrtimer_enqueue by evaluating the rbtree insertion result.
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Cc: john stultz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add some more debug information to the hrtimer and clock events code.
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Cc: john stultz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
After discussing w/ Thomas over IRC, it seems the issue is the sched tick
fires on every cpu at the same time, causing extra lock contention.This smaller change, adds an extra offset per cpu so the ticks don't line up.
This patch also drops the idle latency from 40us down to under 20us.Signed-off-by: john stultz
Signed-off-by: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When a device is replaced by a better rated device, then the broadcast
mode needs to be evaluated again. When the new device has no requirement
for broadcasting, then the broadcast bits for the CPU must be cleared.Signed-off-by: Thomas Gleixner
Cc: john stultz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We need to make sure, that the clockevent devices are resumed, before
the tick is resumed. The current resume logic does not guarantee this.Add CLOCK_EVT_MODE_RESUME and call the set mode functions of the clock
event devices before resuming the tick / oneshot functionality.Fixup the existing users.
Thanks to Nigel Cunningham for tracking down a long standing thinko,
which affected the jinxed VAIO.[akpm@linux-foundation.org: xen build fix]
Signed-off-by: Thomas Gleixner
Cc: john stultz
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Jul, 2007
5 commits
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This basically reverts commit 4e44f3497d41db4c3b9051c61410dee8ae4fb49c,
while waiting for it to be re-done more completely. There are cases of
people mixing "time()" with higher-resolution time sources, and we need
to take the nanosecond offsets into account.Ingo has a patch that does that, but it's still under some discussion.
In the meantime, just revert back to the old simple situation of just
doing the whole exact timesource calculations.But rather than using do_gettimeofday(), use the internal nanosecond
resolution getnstimeofday(), which at least avoids one unnecessary
conversion (since we really don't care about whether the fractional
seconds are nanoseconds or microseconds - we'll just throw them away).Signed-off-by: Linus Torvalds
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* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Prevent people from directly including .
[IA64] remove time interpolator
[IA64] Convert to generic timekeeping/clocksource
[IA64] refresh some config files for 64K pagesize
[IA64] Delete iosapic_free_rte()
[IA64] fallocate system call
[IA64] Enable percpu vector domain for IA64_DIG
[IA64] Enable percpu vector domain for IA64_GENERIC
[IA64] Support irq migration across domain
[IA64] Add support for vector domain
[IA64] Add mapping table between irq and vector
[IA64] Check if irq is sharable
[IA64] Fix invalid irq vector assumption for iosapic
[IA64] Use dynamic irq for iosapic interrupts
[IA64] Use per iosapic lock for indirect iosapic register access
[IA64] Cleanup lock order in iosapic_register_intr
[IA64] Remove duplicated members in iosapic_rte_info
[IA64] Remove block structure for locking in iosapic.c -
Make it possible to use __start_notes and __stop_notes without getting a GPREL
overflow error from the FRV linker.Small variables that would otherwise be in .data or .bss may, depending on the
arch, be placed in special sections (.sdata or .sbss) that permit single
instruction references on fixed instruction width machines.__start_notes and __stop_notes aren't really char variables, and certainly
don't refer to data in .data or .bss. Making them type "void" fools the
compiler into not assuming anything about them.Signed-off-by: David Howells
Signed-off-by: Linus Torvalds -
Remove time_interpolator code (This is generic code, but
only user was ia64. It has been superseded by the
CONFIG_GENERIC_TIME code).Signed-off-by: Bob Picco
Signed-off-by: John Stultz
Signed-off-by: Peter Keilty
Signed-off-by: Tony Luck
20 Jul, 2007
2 commits
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Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).Signed-off-by: Paul Mundt
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Implement the cpu_clock(cpu) interface for kernel-internal use:
high-speed (but slightly incorrect) per-cpu clock constructed from
sched_clock().This API, unused at the moment, will be used in the future by blktrace,
by the softlockup-watchdog, by printk and by lockstat.Signed-off-by: Ingo Molnar
