On Sun, Feb 24, 2008 at 08:10:02AM -0500, Theodore Tso wrote:
> > Firstly, the distributions should have set this up automatically. That
> > they don't is a distributor bug. The sheer madness of Linux not leaving
> > a vmlinux file in a stable known location is hardly something oprofile
> > can be
Obviously I hold no sway here, so there's little point in my continuing
to try and fight this madness, but I have to say my piece. Don't worry,
I'll leave it after this - I know Ingo always gets his way.
On Sat, Feb 23, 2008 at 12:37:24PM +0100, Ingo Molnar wrote:
> and ask him to try oprofile a
On Sat, Jan 29, 2005 at 09:47:42AM -0700, Zwane Mwaikambo wrote:
> > Unfortunately bkcvs seems out of date so I can't even look at this
> > myself.
>
> Yes you are right, i checked bk and there was a lot of shuffling about due
> to the timer override. But it looks like we're depending on the tim
On Fri, Jan 28, 2005 at 12:06:19PM -0700, Zwane Mwaikambo wrote:
> = drivers/oprofile/oprofile_files.c 1.7 vs edited =
> --- 1.7/drivers/oprofile/oprofile_files.c 2005-01-04 19:48:23 -07:00
> +++ edited/drivers/oprofile/oprofile_files.c 2005-01-28 11:36:25 -07:00
> @@ -63,7 +63,9 @@ s
On Thu, Jan 20, 2005 at 12:16:52PM -0700, Zwane Mwaikambo wrote:
> > I haven't found any modular usage of profile_pc in the kernel.
>
> Oprofile?
We don't actually use it, but it looks like maybe we should? It seems
unfortunate that readprofile and OProfile should disagree here.
john
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If I am using a sysctl directory when the relevant unregister_sysctl_table()
is called, the directory and parent directories will continue to exist. Fine.
However when I cd out of the dir, the directory does not disappear.
When/where do sysctl directories get collected ?
thanks
john
--
"Eule
On 20 May 2001, Robert M. Love wrote:
> hi,
>
> is there a sqrt function in the kernel?
no. read the FAQ.
> i tried finding/grepping around, and found some various arch-specific
> stuff for fpu emulation... is there a general sqrt function? is there a
In general questions like this are bette
On Sat, 19 May 2001, Eric S. Raymond wrote:
> This bug unconditionally disables a configuration question -- and it's
> so old that it has propagated across three port files, without either
> of the people who did the cut and paste for the latter two noticing it.
in fact it was originally in i386
On Thu, 10 May 2001, David Woodhouse wrote:
> I'd suggest s/that may be/that are expected to be/
thanks, how about this :
--- Documentation/DocBook/kernel-api.tmpl.old Thu May 10 18:02:05 2001
+++ Documentation/DocBook/kernel-api.tmpl Thu May 10 18:02:57 2001
@@ -41,8 +41,9 @@
!Iinclud
Clean against 2.4.4-ac6 and 2.4.4
thanks
john
--- Documentation/DocBook/kernel-api.tmpl.old Thu May 10 18:02:05 2001
+++ Documentation/DocBook/kernel-api.tmpl Thu May 10 18:02:57 2001
@@ -41,8 +41,9 @@
!Iinclude/linux/init.h
- Atomics
+ Atomic and pointer manipulation
On Sat, 28 Apr 2001, Erik Mouw wrote:
> On Sat, Apr 28, 2001 at 03:16:34PM +0800, Xiong Zhao wrote:
> > hello. i read linux kernel internal. are there other books/papers
> > like that which dwell with linux kernel in detail,especially on
> > process mechanism,for example,how pthread and fork are
On Mon, 26 Mar 2001, Dinesh Nagpure wrote:
> Hello all,
> I am trying to use the LAPIC timer to generate interrupt for some kernel
> profiling work I am doing...but the timer ISR isnt invoking atallhere is
> what I have done
>
Have you seen Vincent Oberle's APIC timers module ? There
I have had many people asking after an HTML
version of this document. Glenn finally contacted me
and a full HTML version with the diagrams is now available at
http://www.kernelnewbies.org/
john
--
"24-hour boredom
I'm convicted instantly"
- Manic Street Preachers
-
To unsubscribe fro
On Tue, 13 Mar 2001, J . A . Magallon wrote:
> Hi,
>
> Recently I read the BeOS www page, and answerd a question in other mailing
> list. Both things have remind me of a pretty file system: 'cdfs'.
>
> Anybody knows if there is a port of 'cdfs' (Audio CD File System) for Linux ?
> Which fs now
On Fri, 16 Feb 2001, Matthew McCormick wrote:
> I have been trying to find the source code for the write system call.
> I've checked through all the source code for the kernel and looked around
> on the mailling list but can't seem to find it anywhere. I was tracing
> the file system operations
On Tue, 13 Feb 2001, Tigran Aivazian wrote:
> Hi Alan,
>
> The only case in schedule_timeout() which does not call schedule() does
> set tsk->state = TASK_RUNNING explicitly before returning. Therefore, any
> code which unconditionally calls schedule_timeout() (and, of course
> schedule()) does
On the system here, ctags is called ctags-exuberant.
Against 2.4.1ac8
thanks
john
--- Makefile.oldFri Feb 9 14:24:29 2001
+++ MakefileFri Feb 9 14:06:08 2001
@@ -33,6 +33,7 @@
STRIP = $(CROSS_COMPILE)strip
OBJCOPY= $(CROSS_COMPILE)objcopy
OBJDUMP
I hope this is OK, comments more than welcome
--- Documentation/DocBook/kernel-hacking.tmpl.old Tue Feb 6 20:06:15 2001
+++ Documentation/DocBook/kernel-hacking.tmpl Tue Feb 6 21:14:42 2001
@@ -336,6 +336,11 @@
+ If all your routine does is read or write some parameter, co
The below fixes some minor things and attempts to add srcdocs
for schedule_timeout(). Can people look at it and comment if there's
more gotcha's that should be commented on there ?
It's against 2.4.0ac12
thanks
john
--- kernel/kmod.old.c Thu Feb 1 14:39:40 2001
+++ kernel/kmod.c Thu F
On Wed, 31 Jan 2001, Mohit Aron wrote:
>
> > http://opensource.corel.com/cprof.html
> >
> > I haven't used it yet, myself.
> >
>
> I have. cprof is no good - extremely slow and generates a 100MB trace
> even with a simple hello world program.
>
try the (currently rather alpha) oprofile, thi
On Mon, 29 Jan 2001, Timur Tabi wrote:
> This is driving me crazy! There is absolutely no documentation anywhere that
> tells you when to use or not use sleep_on or spin_lock_whatever or any of these
> calls.
huh ?
http://www.kernelnewbies.org/books.php3
/usr/src/linux-2.4/Documentation/Doc
I was doing some tests over the weekend, and after doing a swapoff -a
and stressing the system, I hit the bad_device: goto in __swap_free():
printk("swap_free: Trying to free swap from unused
swap-device\n");
I was compiling kernels at the time. The swap setup was a 200Mb parti
Idle curiosity, but what does the "mr" in make mrproper
stand for ?
-
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the body of a message to [EMAIL PROTECTED]
Please read the FAQ at http://www.tux.org/lkml/
This patch is some documentation for sysctl API. It also fixed a warning
with fs/super.c, and makes the default target for the DocBook makefile a
little saner (though everyone should be using make htmldocs of course)
It's against 2.4.0ac8
thanks
john
diff -Naur -X /home/S96/levonj5/disk/dontdi
oprofile is a low-overhead statistical profiler capable of
instruction-grain profiling of the kernel (including interrupt handlers),
modules, and user-space libraries and binaries.
It uses the Intel P6 performance counters as a source of interrupts to
trigger the accounting handler in a manner s
On 28 Dec 2000, David Huggins-Daines wrote:
> <[EMAIL PROTECTED]> writes:
>
> > I activate APIC interruption with the configuration of linux kernel
> > 2.4.0test-11. In the linux kernel configuration under processor type and
> > features I activate "APIC and IO-APIC support on uniprocessor", an
Hi, I need to check for *only* Intel P6 processors, so no Classic Pentium,
and no Pentium 4. setup.c is a bit obscure; is this check correct :
if (current_cpu_data.x86_vendor != X86_VENDOR_INTEL ||
current_cpu_data.x86 != 6)
return NOT_P6;
if (current_cpu_data.x86_model > 5)
On Wed, 29 Nov 2000, Jamie Manley wrote:
> Finally got around to trying the 2.2.18pre series and the agp/drm
> backport and noticed something odd at bootup. Here's an extract from
> dmesg:
>
> Linux agpgart interface v0.99 (c) Jeff Hartmann
> agpgart: Maximum main memory to use for agp memory:
On Wed, 15 Nov 2000, Tigran Aivazian wrote:
> b) read the resources mentioned in the
> /usr/src/linux/Documentation/kernel-docs.txt
>
> Regards,
> Tigran
Even better, just follow links from http://www.kernelnewbies.org/
which is a superset of this file (and links to the online version of it).
On Mon, 30 Oct 2000, Richard B. Johnson wrote:
>
> Hello,
> How much memory would it be reasonable for kmalloc() to be able
> to allocate to a module?
>
> Oct 30 10:48:31 chaos kernel: kmalloc: Size (524288) too large
>
> Using Version 2.2.17, I can't allocate more than 64k! I need
> to allo
This has disappeared off the face of the net, a partial google cache can
be found at :
http://www.google.com/search?q=cache:pubpages.unh.edu/~gherrin/project/linux-net.html+herrin+%22IP+networking%22&hl=en
Has somebody got a contact for Glenn Herrin and/or a copy of the full
document ?
thanks
On Thu, 19 Oct 2000 [EMAIL PROTECTED] wrote:
> can anyone tell the subsitute for MAP_NR in version 2.4?
> or is MAP_NR still there?
>
e.g.
int i = MAP_NR(buffer);
becomes
struct page *p = virt_to_page(buffer);
I believe ...
john
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On Wed, 18 Oct 2000, Rik Faith wrote:
> [Note that the other way to fix this would be to export
> get_module_symbol all the time, and have it just search the available
> symbol space if CONFIG_MODULES is 'n'.]
and
s/_module//;
it is mis-named already ...
john
--
"Mathemeticians stand on ea
On Wed, 18 Oct 2000, Alessandro Rubini wrote:
> + /* init_module has stdin/stdout/stderr open: close them (ARub) */
> + for (i=255; i>=0; i--)
> + if (current->files->fd[i])
> + close(i);
>
shouldn't this be exit_files() ?
see md.c for an example usage
On Wed, 18 Oct 2000, Linus Torvalds wrote:
> It looks better.
>
> However, the fact that you need that dependency on CONFIG_MODULES _still_
> shows that something is wrong. That dependency should not be there, and
> the drm code should be fixed. Why does it care about CONFIG_MODULES at
> all? It
On Wed, 18 Oct 2000, David N. Lombard wrote:
> > The url: http://execpc.com/~rdmiller/Linux/kernel-bootlogo.patch.gz
> > (It's about 380k.)
>
> Are you sure about this patch?
>
> Take a look a list of the patches files; also look at the last four
> lines of the patch file.
>
When doing a dif
On Tue, 17 Oct 2000, Linus Torvalds wrote:
> There's something else wrong in the config to make this be needed at all.
> You need to figure out what the real problem is, and what is causing the
> AGP symbols to not get version information. Probably a file is missing
> from the "export-objs" list.
The patch below allows agpsupport to find the agp functions
when modversions is set and both AGP and DRM are compiled into the kernel,
and adds the dependency on CONFIG_MODULES explicitly.
It applies cleanly to both 2.4.0-test10pre3 and 2.2.18pre16, but only
tested on 2.4
thanks
john
--- drive
On Sun, 8 Oct 2000, Mitchell Blank Jr wrote:
> [EMAIL PROTECTED] wrote:
> > Looking at the code, I don't see any places where "current" is not valid.
> > Got some examples?
>
> It's not that its invalid, it just doesn't make much sense. It points to
> whatever task happened to be running when
On Thu, 5 Oct 2000, RAJESH BALAN wrote:
> Hi,
> Iam interested in learning linux kernel. Can anyone
> suggest a really good book for kernel internals (im
> not bothered abt the price). i 've a book named
> "linux kernel internals". i want something more to
> follow the code completely.
> tx,
> ra
On Wed, 4 Oct 2000, Brian Gerst wrote:
> John Levon wrote:
> > anyway, you can just put refcounts in your hijacked system calls; that is
> > the safe way to do it, and doesn't require any kernel patches, just extra
> > cost in the intercepted system calls.
> >
&g
On Wed, 4 Oct 2000, [iso-8859-1] Abel Muñoz Alcaraz wrote:
> I need that somebody says to my module when a user application has started
> or finished, and what is its name and pid.
>
you do not need to trace system calls then. Provide a misc char device,
and get the user app to open it. Then yo
On Wed, 4 Oct 2000, Brian Gerst wrote:
> Even your overloader has a small module unload race. The only 100%
> race-free way is to put module usage counting into the core kernel, like
> the VFS changes with ->open that were done in 2.3.x. This would mean
> added overhead for all syscalls, so man
On Wed, 4 Oct 2000, Brian Gerst wrote:
> "it doesn't work well" is a bit vague...
>
> I am guessing that you are getting an unresolved symbol. Modifying the
> system call table is not and probably never will be available for
> modules. The syscall table is very architecture dependant, and is n
On Wed, 4 Oct 2000, [iso-8859-1] Abel Muñoz Alcaraz wrote:
> Hi everybody,
>
> I have replaced the execve() kernel API with my own implementation but it
> doesn't work well.
>
> extern void * sys_call_table[]
>
> asmlinkage int (*system_execve)(const char *, c
On Mon, 2 Oct 2000, Anil kumar wrote:
> Hi,
> I am looking for RAID patches .Please suggest where
> can I get these patches.
>
> with regards,
> Anil
>
Try Ingo Molnar's directory, linked from http://kernelnewbies.org/patches/
if you find somewhere else, please tell me
thanks
john
--
"P
On Fri, 29 Sep 2000, Ingo Molnar wrote:
> that having all said, i'm not against a generic, nonpriviledged (kernel
> based) performance counter API within the kernel (if there is demand), and
> such an API should of course have close control over the contents of the
> performance counter registers
On Fri, 29 Sep 2000, John Levon wrote:
> Is it really necessary to use one of the event counters ? this means those
> of us using event counters from modules can't use this oopser at
> the same time, which is a pity.
>
>
> Can you not set up the actual APIC timer on
On Thu, 28 Sep 2000, Ingo Molnar wrote:
>
> the attached patch (against test9-pre7) is a cleaned up version Keir
> Fraser's APIC-on-UP patch, and adds the enabling code of Keith Owens which
> programs P6 performance counter 0 as an NMI. (i simplified the code alot -
> there is no problem at all
On Sun, 24 Sep 2000, Matthew Dharm wrote:
> I'm the usb-storage maintainer. Yes, I realize that there is really no
> need to reset the state to TASK_RUNNING, but I felt better having those
> there. Considering that code is from the reset routines which almost never
> get called, I figured it wa
These chunks :
/* long wait for reset */
+ set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ*6);
+ set_current_state(TASK_RUNNING);
On Mon, 18 Sep 2000, John Rafferty Zedlewski wrote:
> Hi, I've noticed that there are quite a few hardware performance counter
> patches (which allow access to things like the Pentium Model Specific
> Registers for gathering profiling info) floating around, including Rabbit
> (http://www.scl.ames
On Tue, 12 Sep 2000, David Woodhouse wrote:
> [snip]
>
> Code your win32 support module to register the PER_WIN32 personality, and
> set the sys_win32_handler pointer appropriately. Probably not in that order.
>
>
Could this be a solution for modules that intercept system calls from
"
On Thu, 14 Sep 2000, podda wrote:
> hi,
>
> i'm a linux newbie trying to learn kernel magic. i would be glad if
> someone can advice me where to look for to get an idea of the linux
> kernel. hey i don't need that one. ( "use the force, read the source" )
>
> i already tried to use the force ,
On Tue, 12 Sep 2000, Patrick Mau wrote:
> Dear list-readers,
>
> I have a bad SDRAM chip with exactly one bit error. Memtest86 shows
> that the bit error always occurs at the address 0x4eff508. I tried
> to calculate the page number and it should be 20223.
>
You should try Rik van Rein's BadRa
On Wed, 6 Sep 2000, George Anzinger wrote:
> Actually I was not quite correct. The call to timeout WILL return
> immediately, however, the timeout code will clean up the timer, so there
> should be no worry there. It is a bug in that the sleep does not happen
> as expected. I saw at least one
On Wed, 6 Sep 2000, George Anzinger wrote:
> John Levon wrote:
> >
> > Am I right ? against test8pre1
> >
> > Also, is it a bug to not set TASK_{UN}INTERRUPTIBLE before doing a
> > schedule_timeout() ? What will happen ?
> >
> Well, first the &qu
On Mon, 4 Sep 2000, Alexander Viro wrote:
> Are you kidding? In nvi:
>
> [snip vi stuff]
another is "cg/vg" (can't remember who wrote it) which is very useful for
this sort of thing, if a little slower than vi automagic
john
--
"This page contains information of a type (text/html) that can
Hi, this is just a short no-statistics testimony that Rik's VM patch
to test8-pre1 seems much improved over test7. I have a UP P200 with 40Mb,
and previously running KDE2 + mozilla was totally unusable.
With the patch, things run much more smoothly. Interactive feel seems
better, and I don't ha
The following drivers appear to set TASK_RUNNING needlessly.
Against test8pre1.
Sorry for the mass mailing !
thanks
john
--- drivers/net/wan/cosa.c Sat Jul 15 21:11:56 2000
+++ drivers/net/wan/cosa.c.new Fri Sep 1 04:13:44 2000
@@ -524,7 +524,6 @@
current->state = TASK_I
This is a stupid and probably wrong patch to rocket.c
Against test6 but clean on test8pre1
Tytso, this wasn't on sourceforge either
Someone on #kernelnewbies needed this for several rocketports
thanks
john
--- drivers/char/rocket.c Mon Jun 19 21:25:06 2000
+++ drivers/char/rocket.c.new
The drivers below loop, but don't set TASK_{UN}INTERRUPTIBLE each time ...
thanks
john
--- drivers/char/drm/i810_dma.c Fri Aug 11 00:21:18 2000
+++ drivers/char/drm/i810_dma.c.new Fri Sep 1 03:47:08 2000
@@ -1068,7 +1068,6 @@
return;
}
atomic_set(&dev_priv->
Against test8pre1
Every one that doesn't check interrupts has just been made UNINTERRUPTIBLE.
This is not clearly right for some of these, but maintainers need to fix these up ... ?
sorry for the mass mailing
thanks
john
--- drivers/net/wan/comx-hw-comx.c Mon Jul 10 03:15:29 2000
+++ dri
Am I right ? against test8pre1
Also, is it a bug to not set TASK_{UN}INTERRUPTIBLE before doing a
schedule_timeout() ? What will happen ?
thanks
john
--- drivers/pcmcia/yenta.c Fri Aug 11 00:21:32 2000
+++ drivers/pcmcia/yenta.c.new Fri Sep 1 02:42:55 2000
@@ -574,6 +574,7 @@
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