Yes its fine, I am just wandering if this option is enabled by bios ? How ?
On Wed, Aug 11, 2010 at 9:57 PM, Mulyadi Santosa
mulyadi.sant...@gmail.comwrote:
On Wed, Aug 11, 2010 at 16:58, er krishna erkris...@gmail.com wrote:
Dear All,
Can anybody please let me know how to enable demand
On Thu, Aug 12, 2010 at 6:35 PM, Mulyadi Santosa
mulyadi.sant...@gmail.comwrote:
On Thu, Aug 12, 2010 at 14:22, er krishna erkris...@gmail.com wrote:
Yes its fine, I am just wandering if this option is enabled by bios ? How
?
Please don't top post :)
By BIOS? Ehm...well, by default
Dear All,
Can anybody please let me know how to enable demand based power management
in linux kernel ?
Best Regards,
Krishna
Dear All,
If anybody have softcopy of Linux kernel Development vol 3, kindly give me
the book or let me know the link.
Best Regards,
Krishna
mulyadi.sant...@gmail.comwrote:
On Thu, Jul 29, 2010 at 17:59, er krishna erkris...@gmail.com wrote:
Dear All,
If anybody have softcopy of Linux kernel Development vol 3, kindly give
me
the book or let me know the link.
We kindly encourage you to buy the original book instead. LKD
Dear All,
Can anybody please help me how does dentry does path resolution. I want to
undersatnd the whole process in detail. Any link or comments are most
welcome.
Just asking for my understanding,
Dentry maintains a relationship between file object inode for path name
lookup ? Is it right ?
Dear All,
Can anyone please send me some good link/RFC/document to deeply know about
FOIP and T.38.
Best Regards,
Krishna
Dear all,
I have a confusion because I am new to device driver thats' why I am asking
this question ? what is this private data in all types of device structure
like netdev, blkdev and so on ? what is the actual use of it ? what will
happen if I don't use it ? And why should I use it ?
Best
Dear All,
I am in search of finding some good info and some reacarch going in the
field of cloud computing. The level is basic to advance. Since I am new in
this area, Can anybody help me to find some good links and study
material/research paper available with this domain.
Best Regards,
Krishna
Dear All,
I have two queries regarding i/o at block layer:
1. Segment :
My understanding : One page contains more than one buffer. A couple of
buffers combines and makes a segment . A segment contains page, offset and
size. Just asking these are true or not ? Second, Can a segment contains
Dear All,
Can anybody give me some very good and clear reasons that why kobjects even
have ktype fields, when they have kset ?
Regards,
Krishna
In the 2.6 kernel, it is possible to turn off
all interrupt handling on the current processor with either of the following
two func-
tions (which are defined in asm/system.h):
void local_irq_save(unsigned long flags);
void local_irq_disable(void);
A call to local_irq_save disables
Rajat San,
Just asking (since i didn't see spinlock implementation in kernel src),
On Tue, Oct 6, 2009 at 5:52 PM, Rajat Jain rajat.j...@infogain.com wrote:
Hello Govind,
What happens when you go for spin locks without
disabling kernel preemption? Suppose you acquire
a spin lock in a
On Wed, Oct 7, 2009 at 12:45 PM, govind raj nayak
govin...@rediffmail.comwrote:
Yes, spinlock would automatically disable kernel preemption.
I don't think so, otherwise what is the use of spin_lock_irq_save api,
if spin_lock api does it ?. I mean if spin_lock api is disabling the
kernel
On Wed, Oct 7, 2009 at 1:57 PM, er krishna erkris...@gmail.com wrote:
On Wed, Oct 7, 2009 at 12:45 PM, govind raj nayak govin...@rediffmail.com
wrote:
Yes, spinlock would automatically disable kernel preemption.
I don't think so, otherwise what is the use of spin_lock_irq_save
api
On Wed, Oct 7, 2009 at 2:20 PM, er krishna erkris...@gmail.com wrote:
On Wed, Oct 7, 2009 at 1:57 PM, er krishna erkris...@gmail.com wrote:
On Wed, Oct 7, 2009 at 12:45 PM, govind raj nayak
govin...@rediffmail.com wrote:
Yes, spinlock would automatically disable kernel preemption.
I
On Wed, Oct 7, 2009 at 12:04 PM, Jason Nymble jason.nym...@gmail.comwrote:
On 07 Oct 2009, at 7:47 AM, er krishna wrote:
Rajat San,
Just asking (since i didn't see spinlock implementation in kernel src),
On Tue, Oct 6, 2009 at 5:52 PM, Rajat Jain rajat.j...@infogain.comwrote:
Hello
Krishna, you seem to be getting confused between kernel getting
preempted and kernel getting interrupted.
Any spin lock will disable kernel preemption.
If you use spin_lock() then it will just disable kernel preemption but
if you get any interrupt then its handler will get executed.
But
Dear All,
I have a very basic confusion, please help and confirm the right answer :
If a process/thread (user space/kernel space) has taken a lock on a
critical section code, and suddenly an interrupt occurs which want to use
the same shared data of critical region. Will it able to preempt this
Dear All,
I have a simple problem in doing modprobe of ndiswrapper in case of driver
of Intel Corporation PRO/Wireless 3945ABG Network Connection [8086:4222]
card. The steps which I mentioned is as follows. Please help me if I am
missing something. Sorry, this is specific about ndiswrapper, but
On Tue, Aug 11, 2009 at 3:17 PM, Erik Mouw m...@nl.linux.org wrote:
On Tue, 11 Aug 2009 11:37:03 +0530
er krishna erkris...@gmail.com wrote:
I have a simple problem in doing modprobe of ndiswrapper in case of
driver of Intel Corporation PRO/Wireless 3945ABG Network Connection
[8086:4222
be pre-empted then you are right.
If a lower process has taken a lock its preempt_count value is +ve , can
it be preempted by higher priority process ?
*From:* kernelnewbies-bou...@nl.linux.org [mailto:
kernelnewbies-bou...@nl.linux.org] *On Behalf Of *er krishna
*Sent:* 30 July 2009 14
Dear All,
I have some confusion about preemption. Can anybody please clear my query :
1) If there are two process running in kernel space one of them has a lock
its preempt_count value is +ve , can the other process preempt it ? If
it preempt the first process ( which is in running state
that
process; even if any process higher than that comes.
On Thu, Jul 30, 2009 at 2:31 PM, er krishna erkris...@gmail.com wrote:
Dear All,
I have some confusion about preemption. Can anybody please clear my query :
1) If there are two process running in kernel space one of them has a
lock its
I am again repeating the steps, i found something interested, when I am
doing make after making EXPORT_SYMBOL entries in fs/drop_caches.c ( during
kernel compilation); I am getting following warning messages for each of the
exported function from this file only, the messages are:
data
On Tue, Jul 21, 2009 at 12:45 PM, Siddu siddu.s...@gmail.com wrote:
On Tue, Jul 21, 2009 at 11:13 AM, er krishna erkris...@gmail.com wrote:
I am again repeating the steps, i found something interested, when I am
doing make after making EXPORT_SYMBOL entries in fs/drop_caches.c ( during
message in compilation.
Best Regards,
Krishna
On Tue, Jul 21, 2009 at 2:29 PM, Pei Lin telent...@gmail.com wrote:
^_^ I found the root cause of your issue. u forgot
includemodule.h in your fs/drop_caches.c ...
BRs,
Lin
2009/7/21 er krishna erkris...@gmail.com:
I am again
Not only linux kernel, every aspect of life and in fact the whole life is to
discover more more more and it will never end. :)
On Mon, Jul 20, 2009 at 5:29 AM, Peter Teoh htmldevelo...@gmail.com wrote:
wow.Linux Kernel is excitinglots of things to readand
re-readand
Dear All,
I have one simple problem in exporting the function. Everything is fine,
but its not working as per the expectation. Actually I have to export some
function from fs/dropcache.c, but it is not working as per the expectataion,
[ I am able to export any function from other files like
20, 2009 at 9:54 PM, SandeepKsinha sandeepksi...@gmail.com
wrote:
Hi Krishna,
On Mon, Jul 20, 2009 at 8:10 PM, er krishna erkris...@gmail.com
wrote:
Dear All,
I have one simple problem in exporting the function. Everything is
fine, but its not working as per
Peter,
Thats' fine. I have already gone through those articles, and user space
techniques are fine with me. But here I have to do it
( flush the cache ) from kernel module, so I have to do all the things that
kernel does when it get argument 3 into /proc/sys/vm/dropcaches.
Now again
)
api.
Thanks Best Regards,
Krishna
On Sat, Jul 18, 2009 at 11:46 AM, er krishna erkris...@gmail.com wrote:
Peter,
Thats' fine. I have already gone through those articles, and user space
techniques are fine with me. But here I have to do it
( flush the cache ) from kernel module, so I have
Dear Peter ,
I was thinking in a similar manner, but you know :
static void drop_pagecache_sb(struct super_block *sb)
static void drop_pagecache(void)
I mean these are static function, how to export them ? Just asking, shall I
take help of pointer or some wrapper to export these function or
or for
option 2.
Thanks Best Regards,
Krishna
On Sat, Jul 18, 2009 at 5:57 PM, er krishna erkris...@gmail.com wrote:
I am talking to only exporting drop_pagecache_sb drop_pagecache function,
not drop_caches_sysctl_handler.
On Sat, Jul 18, 2009 at 5:53 PM, er krishna erkris...@gmail.com
Dear All,
I am facing some problem, I have to flush the buffer cache from my driver
I am trying to find any api for linux kernel or any way to do it from a
kernel module on x86 platform. Does anybody know how to do it ? Please help.
I have tried following things :
1. echo 3
On Fri, Jul 17, 2009 at 7:01 PM, Peter Teoh htmldevelo...@gmail.com wrote:
On Fri, Jul 17, 2009 at 6:54 PM, er krishnaerkris...@gmail.com wrote:
Dear All,
I am facing some problem, I have to flush the buffer cache from my
driver
I am trying to find any api for linux kernel or any way
Dear Peter,
Thanks for the great help.
Just asking, If I have to include this function [ drop_caches_sysctl_handler
] , then what should I do ? Shall I export it and compile the kernel or is
there any other means to do it.
Second, I just want to know that there will be lots of hurdels to set
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