linux.git/kernel, branch v2.6.21

Allow reading tainted flag as user

2007-04-24T15:23:08+00:00

The commit 34f5a39899f3f3e815da64f48ddb72942d86c366 restricted reading
of the tainted value. The attached patch changes this back to a
write-only check and restores the read behaviour of older versions.

Signed-off-by: Bastian Blank 
Cc: Theodore Ts'o 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] fix kernel oops with badly formatted module option

2007-04-12T22:31:41+00:00

Catch malformed kernel parameter usage of "param = value".  Spaces are not
supported, but don't cause a kernel fault on such usage, just report an
error.

Signed-off-by: Randy Dunlap 
Acked-by: Larry Finger 
Acked-by: Rusty Russell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sched.c: Remove unused variable 'relative'

2007-04-07T17:18:33+00:00

Getting rid of the p->children printout in show_task() left behind an
unused variable.

Signed-off-by: Linus Torvalds

[PATCH] sched: get rid of p->children use in show_task()

2007-04-07T17:06:51+00:00

the p->parent PID printout gives us all the information about the
task tree that we need - the eldest_child()/older_sibling()/
younger_sibling() printouts are mostly historic and i do not
remember ever having used those fields. (IMO in fact they confuse
the SysRq-T output.) So remove them.

This code has sentimental value though, those fields and
printouts are one of the oldest ones still surviving from
Linux v0.95's kernel/sched.c:

        if (p->p_ysptr || p->p_osptr)
                printk("   Younger sib=%d, older sib=%d\n\r",
                        p->p_ysptr ? p->p_ysptr->pid : -1,
                        p->p_osptr ? p->p_osptr->pid : -1);
        else
                printk("\n\r");

written 15 years ago, in early 1992.

Signed-off-by: Ingo Molnar 
Signed-off-by: Linus 'snif' Torvalds

[PATCH] irq-devres: fix failure path of devm_request_irq()

2007-04-07T17:05:21+00:00

devres should be deallocated with devres_free() not kfree().  This bug
corrupts slab on IRQ request failure.  Fix it.

Signed-off-by: Tejun Heo 
Cc: Andrew Morton 
Cc: Greg KH 
Signed-off-by: Linus Torvalds

[PATCH] high-res timers: resume fix

2007-04-07T17:03:43+00:00

Soeren Sonnenburg reported that upon resume he is getting
this backtrace:

 [] smp_apic_timer_interrupt+0x57/0x90
 [] retrigger_next_event+0x0/0xb0
 [] apic_timer_interrupt+0x28/0x30
 [] retrigger_next_event+0x0/0xb0
 [] __kfifo_put+0x8/0x90
 [] on_each_cpu+0x35/0x60
 [] clock_was_set+0x18/0x20
 [] timekeeping_resume+0x7c/0xa0
 [] __sysdev_resume+0x11/0x80
 [] sysdev_resume+0x47/0x80
 [] device_power_up+0x5/0x10

it turns out that on resume we mistakenly re-enable interrupts too
early.  Do the timer retrigger only on the current CPU.

Signed-off-by: Ingo Molnar 
Acked-by: Thomas Gleixner 
Acked-by: Soeren Sonnenburg 
Signed-off-by: Linus Torvalds

[PATCH] fix jiffies clocksource inittime

2007-04-05T04:12:47+00:00

In debugging a problem w/ the -rt tree, I noticed that on systems that mark
the tsc as unstable before it is registered, the TSC would still be
selected and used for a short period of time.  Digging in it looks to be a
result of the mix of the clocksource list changes and my clocksource
initialization changes.

With the -rt tree, using a bad TSC, even for a short period of time can
results in a hang at boot.  I was not able to reproduce this hang w/
mainline, but I'm not completely certain that someone won't trip on it.

This patch resolves the issue by initializing the jiffies clocksource
earlier so a bad TSC won't get selected just because nothing else is yet
registered.

Signed-off-by: John Stultz 
Acked-by: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: fix memory shrinker

2007-04-05T04:12:47+00:00

Fix a bug in the swsusp's memory shrinker that causes some systems using
highmem to refuse to suspend to disk if image_size is set above 1/2 of
available RAM.

Special thanks to Jiri Slaby for reporting the problem and assistance in
debugging it.

Signed-off-by: Rafael J. Wysocki 
Cc: Jiri Slaby 
Cc: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] kernel/time.c: add missing symbol exports

2007-04-05T00:35:53+00:00

This patch adds 2 missing symbol exports: jiffies_to_timeval() and
timeval_to_jiffies().  The (not yet merged) dm-raid4-5 module will need
them, and they used to be indirectly exported by virtue of being inline
functions.

Commit 8b9365d753d9870bb6451504c13570b81923228f ("[PATCH] Uninline
jiffies.h functions") uninlined them, and thus modules now need them
explicitly exported to use them.

Signed-off-by: Thomas Bittermann 
Acked-by: Andrew Morton 
Acked-by: Ingo Molnar 
Acked-by: Thomas Gleixner 
Acked-by: john stultz 
Signed-off-by: Linus Torvalds

[PATCH] Fix microcode-related suspend problem

2007-04-02T17:06:09+00:00

Fix the regression resulting from the recent change of suspend code
ordering that causes systems based on Intel x86 CPUs using the microcode
driver to hang during the resume.

The problem occurs since the microcode driver uses request_firmware() in
its CPU hotplug notifier, which is called after tasks has been frozen and
hangs.  It can be fixed by telling the microcode driver to use the
microcode stored in memory during the resume instead of trying to load it
from disk.

Signed-off-by: Rafael J. Wysocki 
Adrian Bunk 
Cc: Tigran Aivazian 
Cc: Pavel Machek 
Cc: Maxim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds