RE: load/store uops

I can't readily think of a scenario where a load/store or RMW gets cancelled, except perhaps for a prefetch or data abort. But in that case an exception should be thrown even when your code starts the read/load I'd have thought. Is this based on a specific problem you're experiencing ? For example

Re: Include path for module compilation

On Mon, Mar 9, 2009 at 11:29 PM, Vishal Thanki wrote: > its declared in linux/time/timekeeping.c > ref : http://lxr.linux.no/linux+v2.6.28.7/kernel/time/timekeeping.c#L45 It is defined there, not declared. The declaration is here- http://lxr.linux.no/linux+v2.6.28.7/include/linux/time.h#L100 BTW

Include path for module compilation

Hi all, After reading the The Linux Kernel Module Programming Guide, I have written a very simple module that reads the value of variable xtime declared in time.h and displays the output in /proc/xtime_procfs - http://docs.google.com/Doc?id=dftrdgx_0hsjqkhfs Here is the Makefile- http://docs.goog

load/store uops

Hi Can u say a scenario where load/store micro ops gets cancelled ? Does this happen becos of speculative execution ? -- With Love.. . .Shino

Re: any NX memory areas?

On Mon, Mar 9, 2009 at 11:50 PM, Peter Teoh wrote: > as far as I can remember, in x86 architecture, hardware-wise, it is > NOT possible to enable NX.   U may do anything via software, but it > will not be enabled.   NX feature is only for 64bit OS. > No, NX is available for 32bit Linux, as long a

Re: What is mem_cgroup?

Chauhan wrote: > While going through vmscan.c, I found references to mem_cgroup. What > kind of group is it? When is it used? > Documentation/cgroups/cgroups.txt Documentation/cgroups/memory.txt -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linu

RE: BUG_ON with sizeof and bit operations

Hi Stoyan/Nelson, >> BUG_ON(expect != sizeof(foo)); > IIRC sizeof is not actually a function. Its value is known by the compiler. Correct - sizeof is simply a compile time operator. Its value is constant (iow hardcoded) at runtime. >> also what about bit operations? so like BUG_ON(s & 3); would

RE: What is mem_cgroup?

Hi, I've posted a reply to the atomic_t topic, but I think HTML (which I normally never use for Email) is blocked - dunno. As before, ran 2.6.26.3 kernel through Doxygen and this is what it tells me : (I'm ccing this to you as well - if I notice that this post still indeed is blocked, I'll re

Re: SOC Board development

Hi, thank you for the reply. I'll give it a try tomorrow. But I assume this is not a kernel - configuration problem. Because the development board that came with the dnp9200 was running well with the same kernel 2.6.10 + same configuration. So it must be a hardware problem that linux can't handl

Re: BUG_ON with sizeof and bit operations

On Tue, Mar 10, 2009 at 3:59 AM, Stoyan Gaydarov wrote: > I know that function calls should not normally be inside the BUG_ON > params but what about sizeof? > > so would something like this work as intended: > > BUG_ON(expect != sizeof(foo)); IIRC sizeof is not actually a function. Its value is

Re: SOC Board development

hi did you check your initial console? what do you get on kernel 2.4 when you say: cat /proc/cmdline May be the name for your initial console changed from ttyS0 (2.4) to ttySMX0 (2.6) or some thing similar. Probably you will find the name for it in drivers/serial/the_driver_which_is_used_for

BUG_ON with sizeof and bit operations

I know that function calls should not normally be inside the BUG_ON params but what about sizeof? so would something like this work as intended: BUG_ON(expect != sizeof(foo)); also what about bit operations? so like BUG_ON(s & 3); would that still be ok since it doesn't actually modify the origi

SOC Board development

Hello there, we are developing an board for the dnp9200 SOC (http://www.dilnetpc.com/dnp0069.htm). We got kernel 2.4.27 running with the board, boots fine, serial port is working, ethernet is working, everything is good. but when i try to boot kernel 2.6.10, it hangs. What could be the cause?

What is mem_cgroup?

While going through vmscan.c, I found references to mem_cgroup. What kind of group is it? When is it used? Thanks Regards Chauhan -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ

Re: how large is a atomic_t

Hi On Mon, Mar 9, 2009 at 9:08 AM, Mike Christie wrote: > Hi, > > I thought in older linux driver books and docs on the internet it said that > you should not rely on a atomic_t being a certain size, because in some > archs it may be different. > > However, in reading Documentation/atomic_ops.txt

Re: Challenges Faced by an Amateur Linux Programmer

On Mon, Mar 09, 2009 at 05:06:17PM +0530, nidhi mittal wrote: > hey i saw this ...directory ...found its a gud idea ... > may be difficult as we will have to first understand whole working before > adding or doing work on single line ... Like you would any other project, correct? > can we have so

Re: any NX memory areas?

as far as I can remember, in x86 architecture, hardware-wise, it is NOT possible to enable NX. U may do anything via software, but it will not be enabled. NX feature is only for 64bit OS. http://en.wikipedia.org/wiki/NX_bit http://en.wikipedia.org/wiki/X86-64 On Mon, Mar 9, 2009 at 4:27 AM, N

Re: array declaration inside init function causing kernel panic

you can use readelf to dump out the elf information of your .ko Where do static variables get stored? Definitely not in the stack. Hence your observation. - durga From: yogeshwar sonawane To: kernelnewbies Sent: Monday, March 9, 2009 3:36:19 PM Subject: Re:

Re: Challenges Faced by an Amateur Linux Programmer

hey i saw this ...directory ...found its a gud idea ... may be difficult as we will have to first understand whole working before adding or doing work on single line ... can we have some doc related to it or anything as i wd want to work on it .. Nidhi On Fri, Mar 6, 2009 at 11:12 PM, Greg K

RE: array declaration inside init function causing kernel panic

Hi Yogeshwar, The reason the panic disappeared is because a "static" object cannot live on the stack. It will be stored in the global data area. A static local is really like a global, the difference is scope. > Can one dump more information using some command on a .ko object ? I think the binar

Re: array declaration inside init function causing kernel panic

Hi, Continuing my discussion, i tried one more thing. I changed my array declaration from unsigned int array[] to static unsigned int array[]. Then the kernel panic has disappeared. Now things are working fine. For ELF file format, one is aware of the different section like code,bss etc Simi

any NX memory areas?

Hi, I inspect my Linux memory, and it seems that there is no area that prohibite execution like I expected (using NX bit in modern CPU). That really surprises me. I looked at some potential data areas exported in System.map file, like: - mark_rodata_ro - sysctl_data - new_cpu_data - boot_cpu_dat

Re: HIGHMEM4G & PAE possible?

On Sun, Mar 8, 2009 at 7:29 AM, Rik van Riel wrote: > NAHieu wrote: >> >> hi, >> >> i heard that it is possible to have HIGHMEM4G and PAE options >> combined. Is that really possible? > > That is called HIGHMEM64G. > I asked because on 2.6.18, HIGHMEM4G automatically enables PAE option (CONFIG_X8