ures.
The code should support the use of KMALLOC_MIN_SIZE, but I have no hardware to
test this on.
compiled with gcc 4.7.2
patch against 3.6
Signed-off-by: Richard Kennedy
---
include/linux/slub_def.h | 95 +--
mm/slub.c|
Use the always inlined function kmalloc_index to translate
sizes to indexes, so that we don't have to have the slab indexes
hard coded in two places.
Signed-off-by: Richard Kennedy
---
mm/slub.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/mm/slub.c
ill work after the kmalloc_cache
array get reordered.
The second patch adds the new slabs, updates the kmalloc code and
kmem_cache_init().
This version is a drop in replacement for the existing code, but I could make
it a config option if
you prefer.
regards
Richard
Richard Kennedy (2):
SLUB:
Hi all,
If I run
perf bench --format=simple all > test.out
I get this line repeated hundreds of times in test.out
# Running sched/messaging benchmark...
interleaved with the useful output.
It's only printed once if I call it from the command line, it just
redirecting to a file th
On 19/09/12 15:59, Jeff Moyer wrote:
> Jeff Moyer writes:
>
>> Hi,
>>
>> When testing against a pcie ssd or a ramdisk, making the block device
>> structure cacheline_aligned provided a significant increase in
>> performance:
>
> Self-NACK on this one. This results in a ton of warnings:
>
> inc
d for more padding.
Signed-off-by: Richard Kennedy
---
patch against v3.5-rc6
compiled and tested on x86_64
I've been running this patch for several weeks with no obvious problems.
This will allow the usb_host_interface array to be a bit smaller and should
better align with the cachelines
On Fri, 2008-02-15 at 14:46 -0800, Randy Dunlap wrote:
> On Fri, 15 Feb 2008 17:42:24 +0000 Richard Kennedy wrote:
>
> >
> > On Fri, 2008-02-15 at 09:21 -0800, Randy Dunlap wrote:
> > > On Fri, 15 Feb 2008 17:13:12 + Richard Kennedy wrote:
> > >
>
On Fri, 2008-02-15 at 09:44 -0800, Randy Dunlap wrote:
> On Fri, 15 Feb 2008 09:21:54 -0800 Randy Dunlap wrote:
>
> > On Fri, 15 Feb 2008 17:13:12 +0000 Richard Kennedy wrote:
> >
> > > When running "make htmldocs" I'm seeing some non-fatal perl
On Fri, 2008-02-15 at 09:21 -0800, Randy Dunlap wrote:
> On Fri, 15 Feb 2008 17:13:12 +0000 Richard Kennedy wrote:
>
> > When running "make htmldocs" I'm seeing some non-fatal perl errors
> > caused by trying to parse the callback function definitions in
> &g
When running "make htmldocs" I'm seeing some non-fatal perl errors
caused by trying to parse the callback function definitions in
blk-core.c.
The errors are "Use of uninitialized value in concatenation (.)..."
The function pointers are defined without a * i.e.
int (drv_callback)(struct request *
Mike Frysinger wrote:
> On Jan 28, 2008 5:40 AM, Bryan Wu <[EMAIL PROTECTED]> wrote:
>> On Mon, 2008-01-28 at 05:16 -0500, Mike Frysinger wrote:
>>> the trouble is that this file currently weighs in at ~1.8 megs. this
>>> is because it contains all the information for all Blackfin processors
>>> w
On Thu, 2008-01-24 at 22:23 +0100, Sam Ravnborg wrote:
> On Mon, Jan 21, 2008 at 12:02:13PM +0000, Richard Kennedy wrote:
> > config option to add the git branch name to the automatically generated
> > version string.
> >
> > If the current git branch name is not "
config option to add the git branch name to the automatically generated
version string.
If the current git branch name is not "master" then add the name to the
LOCALVERSION_AUTO version string.
The format will then be --g
Signed-off-by: Richard Kennedy <[EMAIL PROTECTED]&g
Here's a couple of small additions to BUG-HUNTING.
1. point out that you can list code in gdb with only one command
(gdb) l *( + offset)
2. give a very brief hint how to decode module symbols in call traces
Signed-off-by: Richard Kennedy <[EMAIL PROTECTED]>
It would ha
On Sat, 2007-12-22 at 02:06 -0800, Andrew Morton wrote:
> On Mon, 17 Dec 2007 12:13:22 + richard <[EMAIL PROTECTED]> wrote:
>
> > fix lockup in when calling drop_caches
> >
> > calling /proc/sys/vm/drop_caches can hang due to a AB/BA lock dependency
> > between j_list_lock an
On Tue, 2007-10-23 at 16:03 +0200, Peter Zijlstra wrote:
> On Tue, 2007-10-23 at 14:55 +0100, richard kennedy wrote:
> > on git v2.6.23-6636-g557ebb7 I'm getting a soft lockup when running a
> > simple disk write test case on AMD64X2, sata hd & ext3.
> >
> >
on git v2.6.23-6636-g557ebb7 I'm getting a soft lockup when running a
simple disk write test case on AMD64X2, sata hd & ext3.
the test does this
sync
echo 3 > /proc/sys/vm/drop_caches
for (( i=0; $i < $count; i=$i+1 )) ; do
dd if=large_file of=copy_file_$i bs=4k &
done
It never recovers once the
When background_writeout() (mm/page-writeback.c) finds any pages_skipped
in writeback_inodes() and it didn't meet any congestion, it exits even
when it hasn't written enough pages yet.
Performing 2 ( or more) concurrent copies of a large file, often creates
lots of skipped pages (1000+) making bac
On Tue, 2007-10-02 at 10:00 +0800, Fengguang Wu wrote:
> On Mon, Oct 01, 2007 at 11:57:34AM -0400, Chuck Ebbert wrote:
> > On 09/29/2007 07:04 AM, Fengguang Wu wrote:
...
>
> (expecting real world confirmations...)
>
> Here is a new safer version. It's more ugly though.
>
> ---
> writeback: avo
I enabled config_jbd_debug in the hope that it may help track down the
lockup I'm seeing, but unfortunately the /proc entry does not get
created.
any ideas how to fix this ?
My machine is an Athlon 64X2 - fedora 7 x86_64 - 2.6.23-rc7
CONFIG_EXT3_FS=m
CONFIG_JBD=m
CONFIG_JBD_DEBUG=y
I added the
On Fri, 2007-09-21 at 03:33 -0700, Andrew Morton wrote:
> On Fri, 21 Sep 2007 11:25:41 +0100 richard kennedy <[EMAIL PROTECTED]> wrote:
>
> > > That's all a bit crappy if the wrong races happen and some other task is
> > > somehow exceeding the dirty limits eac
On Fri, 2007-09-21 at 03:33 -0700, Andrew Morton wrote:
> On Fri, 21 Sep 2007 11:25:41 +0100 richard kennedy <[EMAIL PROTECTED]> wrote:
>
> > > That's all a bit crappy if the wrong races happen and some other task is
> > > somehow exceeding the dirty limits eac
On Thu, 2007-09-20 at 15:36 -0700, Andrew Morton wrote:
> On Thu, 20 Sep 2007 18:04:38 -0400
> Chuck Ebbert <[EMAIL PROTECTED]> wrote:
>
> > >
> > >> Can we get some kind of band-aid, like making the endless 'for' loop in
> > >> balance_dirty_pages() terminate after some number of iterations? Cle
On Tue, 2007-08-21 at 16:36 -0700, Andrew Morton wrote:
> On Sun, 19 Aug 2007 15:56:07 + (UTC)
> richard kennedy <[EMAIL PROTECTED]> wrote:
>
> > On Thu, 09 Aug 2007 22:42:54 -0700, Andrew Morton wrote:
> >
> > > ftp://ftp.kernel.org/pub/linux/kernel/peo
On Thu, 09 Aug 2007 22:42:54 -0700, Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-
rc2/2.6.23-rc2-mm2/
>
> - Various problems from 2.6.23-rc2-mm1 were fixed
>
>
>
> Boilerplate:
>
> - See the `hot-fixes' directory for any important updates to this
On Fri, 2007-08-03 at 14:37 +0200, Peter Zijlstra wrote:
> Per device dirty throttling patches
>
> These patches aim to improve balance_dirty_pages() and directly address three
> issues:
> 1) inter device starvation
> 2) stacked device deadlocks
> 3) inter process starvation
Hi Peter,
I've
On Wed, 01 Aug 2007 18:39:51 -0400, Chuck Ebbert wrote:
> Looks like the same problem with spinlock unfairness we've seen
> elsewhere: it seems to be looping here? Or is everyone stuck just
> waiting for writeout?
>
> lock_timer_base():
> for (;;) {
> tvec_base_t *prelock_
ave a version of this
patch that includes a printk and a test case that occasionally does
trigger this condition.
Signed-off-by: Richard Kennedy <[EMAIL PROTECTED]>
--
--- linux-2.6.22.1/mm/page-writeback.c.orig 2007-07-30 16:36:09.0
+0100
+++ linux-2.6.22.1/mm/page-writ
On Fri, 2007-05-04 at 23:32 +0900, Komuro wrote:
> On Thu, 03 May 2007 15:29:19 +0100
> Richard Kennedy <[EMAIL PROTECTED]> wrote:
>
>
> IDE bugs should be posted to the linux-ide mailing list.
>
>
> > Hi all,
> > I have a JVC MP-CDX1 cdrom drive
Hi,
FWIW the following routine is consistently slightly faster using
Steven's test harness , with a big win when no bit set.
static inline int new_find_first_bit(const unsigned long *b, unsigned
size)
{
int x = 0;
do {
unsigned long v = *b++;
if (v)
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