[SOLVED] Best way to patch kernel

Hello,
I need to apply a single patch to the kernel to make my AverMedia Volar Green HD (A835B) work. However, this need a kernel recompilation every single time the kernel updates. I need to pull the latest abs tree, alter the PKGBUILD (1 single line) and build it.
Is there any solution to all that mess?
I use the default kernel, but right now I'm testing linux-ck. What can I do? Is there any specific folder that i put all my patches and yaourt applies it? or any way to build the specific module I need with the patch applied outside of the kernel?
Also, I have an nvidia card and I use the propriety drivers (I need 3D acceleration). It may cause some trouble...
Last edited by ttouch (2013-04-27 06:51:35)

--- linux-3.7.1/drivers/media/dvb-core/dvb-usb-ids.h.orig 2012-12-27 23:10:35.000000000 +0100
+++ linux-3.7.1/drivers/media/dvb-core/dvb-usb-ids.h 2012-12-27 23:13:50.049680727 +0100
@@ -233,6 +233,10 @@
#define USB_PID_AVERMEDIA_A815M 0x815a
#define USB_PID_AVERMEDIA_A835 0xa835
#define USB_PID_AVERMEDIA_B835 0xb835
+#define USB_PID_AVERMEDIA_A835B_1835 0x1835
+#define USB_PID_AVERMEDIA_A835B_2835 0x2835
+#define USB_PID_AVERMEDIA_A835B_3835 0x3835
+#define USB_PID_AVERMEDIA_A835B_4835 0x4835
#define USB_PID_AVERMEDIA_1867 0x1867
#define USB_PID_AVERMEDIA_A867 0xa867
#define USB_PID_AVERMEDIA_TWINSTAR 0x0825
--- linux-3.7.1/drivers/media/usb/dvb-usb-v2/it913x.c.orig 2012-12-27 23:10:35.000000000 +0100
+++ linux-3.7.1/drivers/media/usb/dvb-usb-v2/it913x.c 2012-12-27 23:13:49.000693841 +0100
@@ -773,6 +773,18 @@
{ DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9006,
&it913x_properties, "ITE 9135(9006) Generic",
RC_MAP_IT913X_V1) },
+ { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_1835,
+ &it913x_properties, "Avermedia A835B(1835)",
+ RC_MAP_IT913X_V2) },
+ { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_2835,
+ &it913x_properties, "Avermedia A835B(2835)",
+ RC_MAP_IT913X_V2) },
+ { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_3835,
+ &it913x_properties, "Avermedia A835B(3835)",
+ RC_MAP_IT913X_V2) },
+ { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_4835,
+ &it913x_properties, "Avermedia A835B(4835)",
+ RC_MAP_IT913X_V2) },
{} /* Terminating entry */
I'll report the output PKGBUILD later.

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[Solved] 'Best' way to install programs?

I was wondering what the arch Linux community thought the best way to install things is.
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Peilonrayz wrote:
There are two good ways to install TeX Live. One is to use pacman. The other is to use the upstream installer.
Can you please show me what you are referring to?
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pyther
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Hello sputnick, please read our policy on bumping old threads: https://wiki.archlinux.org/index.php/Fo … Bumping.22
Closing.

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Hi colin a.
Welcome to the Support Communities!
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Wondering if this was the correct way to patch my kernel for CFLAGS?

Hello. I use to build the zen-sources kernel but stopped many months ago. I didn't really need all of those patches but I did miss the Custom CFLAGS/MAKEFLAGS option that the zen kernel had. I also missed the 432HZ Timer frequency setting available in the zen patch.
So I researched a bit and grabbed these parts from the zen patch to add to the Arch kernel:
For the CFLAGS/MAKEFLAGS
diff --git a/Makefile b/Makefile
index 1ab3ebf..472fe73 100644
--- a/Makefile
+++ b/Makefile
@@ -328,13 +328,12 @@ CHECK = sparse
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-Wbitwise -Wno-return-void $(CF)
MODFLAGS = -DMODULE
-CFLAGS_MODULE = $(MODFLAGS)
-AFLAGS_MODULE = $(MODFLAGS)
-LDFLAGS_MODULE =
-CFLAGS_KERNEL =
+CFLAGS_MODULE = $(MODFLAGS) $(CUSTOM_CFLAGS)
+AFLAGS_MODULE = $(MODFLAGS)
+LDFLAGS_MODULE =
+CFLAGS_KERNEL = $(CUSTOM_CFLAGS)
AFLAGS_KERNEL =
# Use LINUXINCLUDE when you must reference the include/ directory.
# Needed to be compatible with the O= option
LINUXINCLUDE := -Iinclude \
@@ -344,6 +343,9 @@ LINUXINCLUDE := -Iinclude \
KBUILD_CPPFLAGS := -D__KERNEL__
+# Apply custom flags
+KBUILD_CFLAGS += $(CUSTOM_CFLAGS)
+
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-Werror-implicit-function-declaration
diff --git a/init/Kconfig b/init/Kconfig
index 6a5c5fe..7b2f4b5 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -672,6 +734,32 @@ config CC_OPTIMIZE_FOR_SIZE
If unsure, say Y.
+menu "Custom Build Flags"
+
+config CUSTOM_CFLAGS
+ string "Custom CFLAGS for kernel"
+ default ""
+ help
+ You can use this to easily set custom gcc CFLAGS to be used for the
+ entire kernel (including modules).
+
+ No warning for you, i can't fix stupidity.
+
+ If unsure, leave blank.
+
+config CUSTOM_MAKEFLAGS
+ string "Custom MAKEFLAGS for kernel"
+ default ""
+ help
+ You can use this to easily set custom MAKEFLAGS to be used for building
+ the entire kernel.
+
+ (Or just use the options when you run make?)
+
+ If unsure, leave blank.
+
+endmenu
+
config SYSCTL
bool
and for the Timer frequency:
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 94fabd5..7a830d4 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -4,7 +4,7 @@
choice
prompt "Timer frequency"
- default HZ_250
+ default HZ_1000
help
Allows the configuration of the timer frequency. It is customary
to have the timer interrupt run at 1000 Hz but 100 Hz may be more
@@ -23,6 +23,30 @@ choice
with lots of processors that may show reduced performance if
too many timer interrupts are occurring.
+ config HZ_108
+ bool "108 HZ"
+ help
+ 864 HZ is the best value for desktop systems. Most responsive
+ out of all the options. This is for Eight core/Processor systems only
+ as timer frequencies * NR_CPUS = actual frequency.
+ Try this if you have a Eight Core/Processor processor system and a desktop environment.
+
+ config HZ_144
+ bool "144 HZ"
+ help
+ 864 HZ is the best value for desktop systems. Most responsive
+ out of all the options. This is for Six Core/Processor systems only
+ as timer frequencies * NR_CPUS = actual frequency.
+ Try this if you have a Six core/processor system and a desktop environment.
+
+ config HZ_216
+ bool "216 HZ"
+ help
+ 864 HZ is the best value for desktop systems. Most responsive
+ out of all the options. This is for Quad-core/Processor systems only
+ as timer frequencies * number of processors = actual frequency.
+ Try this if you have a quad-core/dual processor system and a desktop environment.
+
config HZ_250
bool "250 HZ"
help
@@ -39,6 +63,22 @@ choice
on SMP and NUMA systems and exactly dividing by both PAL and
NTSC frame rates for video and multimedia work.
+ config HZ_432
+ bool "432 HZ"
+ help
+ 864 HZ is the best value for desktop systems. Most responsive
+ out of all the options. This is for Dual Core/Processor systems only
+ as timer frequencies * number of processors = actual frequency.
+ Try this if you have a dual-core/dual processor system and a desktop environment.
+
+ config HZ_864
+ bool "864 HZ"
+ help
+ 864 HZ is the best value for desktop systems. Most responsive
+ out of all the options. The only reason it is not default is
+ because it may break few drivers. Give it a try if you have
+ a desktop :).
+
config HZ_1000
bool "1000 HZ"
help
@@ -50,8 +90,13 @@ endchoice
config HZ
int
default 100 if HZ_100
+ default 108 if HZ_108
+ default 144 if HZ_144
+ default 216 if HZ_216
default 250 if HZ_250
default 300 if HZ_300
+ default 432 if HZ_432
+ default 864 if HZ_864
default 1000 if HZ_1000
config SCHED_HRTICK
Well the code was added to my make menuconfig kernel settings, and is in the .config of my newly compiled kernel..... I'm just wondering if I did this correctly. (I'm pretty sure that I did a crappy job of patching since I just grabbed the pieces of the zen patch that I thought were the correct one)..... This is the message from the patch:
patching file Makefile
patching file init/Kconfig
patch unexpectedly ends in middle of line
Hunk #1 succeeded at 734 with fuzz 2.
patching file kernel/Kconfig.hz
patch unexpectedly ends in middle of line
Hunk #4 succeeded at 90 with fuzz 1.
So if someone can tell me a better way to patch the kernel26 for custom CFLAGS and 432HZ Timer frequency (for dual core) I would appreciate it. Thanks.

I'm still trying to find out if I needed to patch any other parts of the kernel source when I added CFLAGS to the kernel modules? I also would like to know if I did the Timing part correctly (so I could use the 432HZ setting for a dual core).
..... so far this kernel has worked ok for the last 4 days. Does anybody know how I can benchmark it and compare it to other kernels that I have built with different settings?
Any info is appreciated.
Last edited by methuselah (2009-05-19 15:20:55)

Best way to configure patching of multiple groups?

Howdy,
We're looking to start using Config Manager 2012 R2 to handle patching of our servers. I'm looking for any advice or opinions as to how to set everything up to run in the best way.
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http://technet.microsoft.com/en-us/library/hh508762.aspx
My Blog: http://www.petervanderwoude.nl/
Follow me on twitter: pvanderwoude
We only update the patch list the day after patch Tuesday so all the ADRs should have the same patches. But that brings up the question I asked about having multiple ADRs scheduled for consecutive Saturdays or have 1 ADR with each collection to have
a maintenance window to set the Saturday it goes. I guess having multiple ADRs that run at the same time but with different deadlines would be similar to just having 1 and using the maintenance windows. But it might be better so that if the deadline
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hmm...

Best way to apply the patch

Hello,
Could someone tell me what's the best way to apply the
patch?
Should I install create the database after I use the patch?
Thanks!
John
null

Hey,
    The Best way would be:
Apply the patch on the secondry one first and then on the primary box.
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One more thing:
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Please ensure that you use FTP server. Donot use TFTP as its not supported.
Regards
Minakshi
Do rate the helpful posts:)

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[SOLVED] Best way to patch kernel

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