linux-toradex.git/arch/s390/kernel/time.c, branch v3.4.2

[S390] irq: external interrupt code passing

2012-03-11T15:59:29+00:00

The external interrupt handlers have a parameter called ext_int_code.
Besides the name this paramter does not only contain the ext_int_code
but in addition also the "cpu address" (POP) which caused the external
interrupt.
To make the code a bit more obvious pass a struct instead so the called
function can easily distinguish between external interrupt code and
cpu address. The cpu address field however is named "subcode" since
some external interrupt sources do not pass a cpu address but a
different parameter (or none at all).

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] correct ktime to tod clock comparator conversion

2012-02-17T09:29:33+00:00

The conversion of the ktime to a value suitable for the clock comparator
does not take changes to wall_to_monotonic into account. In fact the
conversion just needs the boot clock (sched_clock_base_cc) and the
total_sleep_time.

This is applicable to 3.2+ kernels.

CC: stable@vger.kernel.org
Signed-off-by: Martin Schwidefsky

s390: time - convert sysdev_class to a regular subsystem

2011-12-21T23:09:50+00:00

After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

[S390] sparse: fix sparse warnings about missing prototypes

2011-10-30T14:16:46+00:00

Add prototypes and includes for functions used in different modules.

Signed-off-by: Martin Schwidefsky

time, s390: Get rid of compile warning

2011-10-12T08:24:10+00:00

"s390: Use direct ktime path for s390 clockevent device" in linux-next
introduces this compile warning:

arch/s390/kernel/time.c: In function 's390_next_ktime':
arch/s390/kernel/time.c:118:2: warning:
  comparison of distinct pointer types lacks a cast [enabled by default]

Just use a u64 instead of an s64 variable. This is not a problem since it
will always contain a positive value.

Signed-off-by: Heiko Carstens 
Cc: Martin Schwidefsky 
Link: http://lkml.kernel.org/r/1316675957-5538-1-git-send-email-heiko.carstens@de.ibm.com
Signed-off-by: Thomas Gleixner

s390: Use direct ktime path for s390 clockevent device

2011-09-08T09:10:56+00:00

The clock comparator on s390 uses the same format as the TOD clock.
If the value in the clock comparator is smaller than the current TOD
value an interrupt is pending. Use the CLOCK_EVT_FEAT_KTIME feature
to get the unmodified ktime of the next clockevent expiration and
use it to program the clock comparator without querying the TOD clock.

Signed-off-by: Martin Schwidefsky 
Cc: john stultz 
Link: http://lkml.kernel.org/r/20110823133143.153017933@de.ibm.com
Signed-off-by: Thomas Gleixner

[S390] irq: merge irq.c and s390_ext.c

2011-05-26T07:48:24+00:00

Merge irq.c and s390_ext.c into irq.c. That way all external interrupt
related functions are together.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] convert old cpumask API into new one

2011-05-23T08:24:31+00:00

Adapt new API.

Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Martin Schwidefsky

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

[S390] irq: have detailed statistics for interrupt types

2011-01-05T11:47:25+00:00

Up to now /proc/interrupts only has statistics for external and i/o
interrupts but doesn't split up them any further.
This patch adds a line for every single interrupt source so that it
is possible to easier tell what the machine is/was doing.
Part of the output now looks like this;

           CPU0       CPU2       CPU4
EXT:       3898       4232       2305
I/O:        782        315        245
CLK:       1029       1964        727   [EXT] Clock Comparator
IPI:       2868       2267       1577   [EXT] Signal Processor
TMR:          0          0          0   [EXT] CPU Timer
TAL:          0          0          0   [EXT] Timing Alert
PFL:          0          0          0   [EXT] Pseudo Page Fault
[...]
NMI:          0          1          1   [NMI] Machine Checks

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky