Re: [PATCH v2 3/6] PowerCap: Added to drivers build

[Gene Heskett]

On Friday 04 October 2013, Srinivas Pandruvada wrote:
>Added changes to Makefile and Kconfig to include in driver build.
>
>Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
>Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
>Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
>---
> drivers/Kconfig  | 2 ++
> drivers/Makefile | 1 +
> 2 files changed, 3 insertions(+)
>
>diff --git a/drivers/Kconfig b/drivers/Kconfig
>index aa43b91..969e987 100644
>--- a/drivers/Kconfig
>+++ b/drivers/Kconfig
>@@ -166,4 +166,6 @@ source "drivers/reset/Kconfig"
>
> source "drivers/fmc/Kconfig"
>
>+source "drivers/powercap/Kconfig"
>+
> endmenu
>diff --git a/drivers/Makefile b/drivers/Makefile
>index ab93de8..34c1d55 100644
>--- a/drivers/Makefile
>+++ b/drivers/Makefile
>@@ -152,3 +152,4 @@ obj-$(CONFIG_VME_BUS)		+= vme/
> obj-$(CONFIG_IPACK_BUS)		+= ipack/
> obj-$(CONFIG_NTB)		+= ntb/
> obj-$(CONFIG_FMC)		+= fmc/
>+obj-$(CONFIG_POWERCAP)		+= powercap/

I would object to this whole premise if it is not under the absolute 
control of the users program. Linuxcnc for instance is intimately married 
to a parport whose status for writes is absolutely stable from write to 
write, and whose status may be in some cases, read at sub 20 u-second 
intervals.  Anything which would imped this, puts the operator of a 50+ ton 
piece of machinery's life in jeopardy because its status is not readable in 
as close to real time as possible as it may be required to initiate a stop 
from some alarm condition before it has moved far enough to injure, maim or 
kill. 50 thousandths of an inch in further movement while moving a 70 ton 
milling machines table at 150 inches a minute is not an unreasonable 
expectation for us.

Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Q: What does the CE in Windows CE stand for?
A: Caveat Emptor.
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
         law-abiding citizens.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/