On Thursday 12 September 2013 11:13 PM, Luck, Tony wrote:
+ default:
+ cmpr = 60;
+ break;
+ }
Is this the right "default"? It may be a good choice for a backend with a
really
tiny buffer (1 ... 999). But less good for a (theoretical) backend with a
la
experiments
with
plain text for buffers of size 1k - 4k (Smaller the buffer size repeated
occurence
will be less) and with sample crash log for buffers ranging from 4k - 10k.
Reported-by: Seiji Aguchi
Signed-off-by: Aruna Balakrishnaiah
---
Changes from v1:
Retain the cmpr = 45 for
Remove the messages indicating compression failure as it will
add to the space during panic path.
Reported-by: Seiji Aguchi
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c |4
1 file changed, 4 deletions(-)
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index
Since zlib_deflateInit2() is used for specifying window bit during compression,
zlib_inflateInit2() is appropriate for decompression.
Reported-by: Seiji Aguchi
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs
experiments
with
plain text for buffers of size 1k - 4k (Smaller the buffer size repeated
occurence
will be less) and with sample crash log for buffers ranging from 4k - 10k.
Reported-by: Seiji Aguchi
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c | 23 ++-
1
On Wednesday 04 September 2013 07:14 AM, Seiji Aguchi wrote:
Aruna,
Sorry for the late response.
Seiji,
Could you let us know the efivars buffer size with which the pstore is
registered when
the failure occurred.
I looked into the issue today.
I added some debug message just before pstore_c
On Friday 23 August 2013 04:34 AM, Seiji Aguchi wrote:
-Original Message-
From: linux-kernel-ow...@vger.kernel.org
[mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of Aruna Balakrishnaiah
Sent: Friday, August 16, 2013 9:18 AM
To: linuxppc-...@ozlabs.org; tony.l...@intel.com
On Friday 23 August 2013 04:47 AM, Luck, Tony wrote:
<1>[ 383.209057] RIP [] sysrq_handle_crash+0x16/0x20
<4>[ 383.209057] RSP
<4>[ 383.209057] CR2:
<4>[ 383.209057] ---[ end trace 04a1cddad37b4b33 ]---
<3>[ 383.209057] pstore: compression failed for Part 2 returned -5
<3
In case decompression fails, add a ".enc.z" to indicate the file has
compressed data. This will help user space utilities to figure
out the file contents.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/inode.c|7 ---
fs/pstore/internal.h |5 +++--
fs/pstore/platfor
patch adds backward
compatibilty with old format oops header when reading from pstore.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/nvram.c
b/arch/powerpc/platforms/pseries/nv
In pstore write, Efi will add a character 'C'(compressed) or
D'(decompressed) in its header while writing to persistent store.
In pstore read, read the header and update the 'compressed' flag
accordingly.
Signed-off-by: Aruna Balakrishnaiah
---
drivers/firmwar
In pstore write, add character 'C'(compressed) or 'D'(decompressed)
in the header while writing to Ram persistent buffer. In pstore read,
read the header and update the 'compressed' flag accordingly.
Signed-off-by: Aruna Balakrishnaia
In pstore write, set the section type to CPER_SECTION_TYPE_DMESG_COMPR
if the data is compressed. In pstore read, read the section type and
update the 'compressed' flag accordingly.
Signed-off-by: Aruna Balakrishnaiah
---
drivers/acpi/apei/erst.c | 13 -
1 file c
Based on the flag 'compressed' set or not, pstore will decompress the
data returning a plain text file. If decompression fails for a particular
record it will have the compressed data in the file which can be
decompressed with 'openssl' command line tool.
Signed-off-by:
Backends will set the flag 'compressed' after reading the log from
persistent store to indicate the data being returned to pstore is
compressed or not.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
drivers/acpi/apei/erst.c
will capture the uncompressed
data by making a call again to kmsg_dump with registered_buffer
of registered size.
Pstore will indicate the data is compressed or not with a flag
in the write callback.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c | 148
e.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |4 ++--
drivers/acpi/apei/erst.c |4 ++--
drivers/firmware/efi/efi-pstore.c |2 +-
fs/pstore/platform.c |7 ---
fs/pstore/ram.c|2 +
Pstore will make use of deflate and inflate algorithm to compress and decompress
the data. So when Pstore is enabled select zlib_deflate and zlib_inflate.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/Kconfig |2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/pstore/Kconfig b/fs
t in pstore write
as 'hsize' will be removed in the subsequent patch.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 102
1 file changed, 12 insertions(+), 90 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvr
, efivars and persistent ram.
---
Aruna Balakrishnaiah (11):
powerpc/pseries: Remove (de)compression in nvram with pstore enabled
pstore: Add new argument 'compressed' in pstore write callback
pstore/Kconfig: Select ZLIB_DEFLATE and ZLIB_INFLATE when PSTORE is
selected
pst
On Thursday 08 August 2013 09:38 AM, Aruna Balakrishnaiah wrote:
Hi Tony,
On Thursday 08 August 2013 03:52 AM, Tony Luck wrote:
On Tue, Aug 6, 2013 at 10:35 PM, Tony Luck wrote:
ERST is at the whim of the BIOS writer (the ACPI standard doesn't provide any
suggestions on record sizes)
have 'openssl' command line tool to decompress the compressed data,
dump the compressed data in case decompression fails instead of not dumping
anything.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 70 +++-
1 file c
Older kernels has just length information in their header. Handle it
while reading old kernel oops log from pstore.
Applies on top of powerpc/pseries: Fix buffer overflow when reading from pstore
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 18
On Wednesday 07 August 2013 11:00 PM, Tony Luck wrote:
Oh - one more thing - and my apologies for not spotting this before:
dst = allocate_buf_for_compression(big_buf_sz);
No - you may not call kmalloc() in oops/panic context. Please pre-allocate
everything you need in some in
Hi Tony,
On Thursday 08 August 2013 03:52 AM, Tony Luck wrote:
On Tue, Aug 6, 2013 at 10:35 PM, Tony Luck wrote:
ERST is at the whim of the BIOS writer (the ACPI standard doesn't provide any
suggestions on record sizes). My systems support ~6K record size.
Off by a little - 7896 bytes on my
Hi Tony,
On Wednesday 07 August 2013 08:55 AM, Tony Luck wrote:
On Tue, Aug 6, 2013 at 6:58 PM, Aruna Balakrishnaiah
wrote:
The patch looks right. I will clean it up. Does the issue still persist
after this?
Things seem to be working - but testing has hardly been extensive (just
a couple of
On Wednesday 07 August 2013 05:06 AM, Tony Luck wrote:
On Mon, Aug 5, 2013 at 2:20 PM, Tony Luck wrote:
Still have problems booting if there are any compressed images in ERST
to be inflated.
So I took another look at this part of the code ... and saw a couple of issues:
while ((size
hould have
encountered
same issue on Power too. Please give a final try with the patch I have attached
and I
will dig into this more tomorrow. Patch to be applied on top of my patch series
(without your fix patch).
- Aruna
-Tony
commit 35b489152ae8f673fa79e7eeffc0bc8503c608b6
Author: Aruna Bal
Hi Tony,
Thank you very much for testing my patches.
On Saturday 03 August 2013 03:42 AM, Tony Luck wrote:
A quick experiment to use your patchset - but with compression
disabled by tweaking this line in pstore_dump():
zipped_len = -1; //zip_data(dst, hsize + len);
turned out well. This
Hi Tony/Kees,
Could you please review and let me know your comments!!
Regards,
Aruna
On Monday 15 July 2013 10:25 PM, Aruna Balakrishnaiah wrote:
The patchset adds compression support to pstore.
As the non-volatile storage space is limited, adding compression
support results in capturing
In pstore write, add character 'C'(compressed) or 'D'(decompressed)
in the header while writing to Ram persistent buffer. In pstore read,
read the header and update the 'compressed' flag accordingly.
Signed-off-by: Aruna Balakrishnaia
In pstore write, Efi will add a character 'C'(compressed) or
D'(decompressed) in its header while writing to persistent store.
In pstore read, read the header and update the 'compressed' flag
accordingly.
Signed-off-by: Aruna Balakrishnaiah
---
drivers/firmwar
In pstore write, set the section type to CPER_SECTION_TYPE_DMESG_COMPR
if the data is compressed. In pstore read, read the section type and
update the 'compressed' flag accordingly.
Signed-off-by: Aruna Balakrishnaiah
---
drivers/acpi/apei/erst.c | 13 -
1 file c
patch adds backward
compatibilty with old format oops header when reading from pstore.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 34 +---
1 file changed, 27 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvr
Based on the flag 'compressed' set or not, pstore will decompress the
data returning a plain text file. If decompression fails for a particular
record it will have the compressed data in the file which can be
decompressed with 'openssl' command line tool.
Signed-off-by:
In case decompression fails, add a ".enc.z" to indicate the file has
compressed data. This will help user space utilities to figure
out the file contents.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/inode.c|9 +
fs/pstore/internal.h |5 +++--
fs/pstore/
will capture the uncompressed
data by making a call again to kmsg_dump with registered_buffer
of registered size.
Pstore will indicate the data is compressed or not with a flag
in the write callback.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c | 124
Backends will set the flag 'compressed' after reading the log from
persistent store to indicate the data being returned to pstore is
compressed or not.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
drivers/acpi/apei/erst.c
Pstore will make use of deflate and inflate algorithm to compress and decompress
the data. So when Pstore is enabled select zlib_deflate and zlib_inflate.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/Kconfig |2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/pstore/Kconfig b/fs
t in pstore write
as 'hsize' will be removed in the subsequent patch.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 40
1 file changed, 40 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvram.c
b/arch/pow
e.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |4 ++--
drivers/acpi/apei/erst.c |4 ++--
drivers/firmware/efi/efi-pstore.c |2 +-
fs/pstore/platform.c |7 ---
fs/pstore/ram.c|2 +
ad call back.
Pstore will decompress the data based on the flag and writes decompressed data
to the file.
Test results:
Have tested the patches on powerpc/pseries.
On Intel have only tested with erst backend.
Efi-pstore and RAM persistent buffer requires testing.
---
Aruna Balakrishnaiah
Incorporate the addition of hsize argument in write_buf callback
of pstore.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/ftrace.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/pstore/ftrace.c b/fs/pstore/ftrace.c
index 43b1280..76a4eeb 100644
--- a/fs/pstore
Hi Tony,
On Tuesday 25 June 2013 09:32 PM, Luck, Tony wrote:
Introducing headersize in pstore_write() API would need changes at
multiple places whereits being called. The idea is to move the
compression support to pstore infrastructure so that other platforms
could also make use of it.
Any thou
by pstore and last oops_data_sz bytes of big_oops_buf to NVRAM so that we
have recent oops messages in lnx,oops-log.
In case decompression fails, it will result in absence of oops file but still
have files (in /dev/pstore) for other partitions.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc
nvram_compress() and zip_oops() is used by the nvram_pstore_write
API to compress oops messages hence re-organise the functions
accordingly to avoid forward declarations.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 104
1
Header size is needed to distinguish between header and the dump data.
Incorporate the addition of new argument (hsize) in the pstore write
callback.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c |4 +++-
drivers/acpi/apei/erst.c |4
dmesg file but will still have files relating to other parititons.
---
Aruna Balakrishnaiah (3):
Pass header size in the pstore write callback
powerpc/pseries: Re-organise the oops compression code
powerpc/pseries: Support compression of oops text via pstore
arch/powerpc/platforms
Hi Kees,
On Monday 24 June 2013 11:27 PM, Kees Cook wrote:
On Sun, Jun 23, 2013 at 11:23 PM, Aruna Balakrishnaiah
wrote:
The patch set supports compression of oops messages while writing to NVRAM,
this helps in capturing more of oops data to lnx,oops-log. The pstore file
for oops messages
Since now we have pstore support for nvram in pseries, enable it
in the default config. With this config option enabled, pstore
infra-structure will be used to read/write the messages from/to nvram.
Signed-off-by: Aruna Balakrishnaiah
---
v3:
Move pstore config to right place
v2
g is more important than "what", since
you can always determine "what" is being changed, by looking at the diff.
The "why" will be long forgotten.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/configs/pseries_defconfig |1 +
1 file changed, 1 insertion(+)
Since now we have pstore support for nvram in pseries, enable it
in the default config. With this config option enabled, pstore
infra-structure will be used to read/write the messages from/to nvram.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/configs/pseries_defconfig |1 +
1 file
by pstore and last oops_data_sz bytes of big_oops_buf to NVRAM so that we
have recent oops messages in lnx,oops-log.
In case decompression fails, it will result in absence of oops file but still
have files (in /dev/pstore) for other partitions.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc
pstore_get_header_size will return the size of the header added by pstore
while logging messages to the registered buffer.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c |7 ++-
include/linux/pstore.h |6 ++
2 files changed, 12 insertions(+), 1 deletion(-)
diff
nvram_compress() and zip_oops() is used by the nvram_pstore_write
API to compress oops messages hence re-organise the functions
accordingly to avoid forward declarations.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 104
1
having the compressed data (junk) in the
dmesg file it will skip and continue reading other partitions. This results in
absence of dmesg file but will still have files relating to other parititons.
---
Aruna Balakrishnaiah (3):
Retreive header size from pstore
powerpc/pseries: Re-organise
Enable PSTORE in pseries_defconfig
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/configs/pseries_defconfig |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs/pseries_defconfig
b/arch/powerpc/configs/pseries_defconfig
index c4dfbaf..9630a50 100644
--- a/arch
Hi Michael,
On Wednesday 19 June 2013 11:45 AM, Michael Neuling wrote:
Aruna Balakrishnaiah wrote:
Currently the kernel provides the contents of p-series NVRAM only as a
simple stream of bytes via /dev/nvram, which must be interpreted in user
space by the nvram command in the powerpc-utils
parititons.
---
Aruna Balakrishnaiah (3):
Retreive header size from pstore.
powerpc/pseries: Re-organise the oops compression code
powerpc/pseries: Support compression of oops text via pstore
arch/powerpc/platforms/pseries/nvram.c | 236 +++-
fs
This patch set exploits the pstore subsystem to read details of
of-config partition in NVRAM to a separate file in /dev/pstore.
For instance, of-config partition details will be stored in a
file named [of-nvram-5].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc
This patch exploits pstore subsystem to read details of common partition
in NVRAM to a separate file in /dev/pstore. For instance, common partition
details will be stored in a file named [common-nvram-6].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms
Introduce os_partition member in nvram_os_partition structure to identify
if the partition is an os partition or not. This will be useful to handle
non-os partitions of-config and common.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c
This patch set exploits the pstore subsystem to read details of rtas partition
in NVRAM to a separate file in /dev/pstore. For instance, rtas details will be
stored in a file named [rtas-nvram-4].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries
kmsg_dump mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed, 157 insertions(+), 15 deletion
Introduce generic read function to read nvram partitions other than rtas.
nvram_read_error_log will be retained which is used to read rtas partition
from rtasd. nvram_read_partition is the generic read function to read from
any nvram partition.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms
headers. version is assigned 5000 (greater than oops partition size)
so that existing tools will refuse to dump new style partitions as
the length is too large. The updated tools will work with both
old and new format headers.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
remove forward declarations of pstore callbacks
- Handle return value of nvram_write_os_partition
- Remove empty pstore callbacks and register pstore only when pstore
is configured
---
Aruna Balakrishnaiah (8):
powerpc/pseries: Remove syslog prefix in uncompressed
On Wednesday 05 June 2013 03:13 PM, Benjamin Herrenschmidt wrote:
On Wed, 2013-06-05 at 14:30 +0530, Aruna Balakrishnaiah wrote:
Hi Ben,
On Saturday 01 June 2013 10:55 AM, Benjamin Herrenschmidt wrote:
Another question...
Should the core pstore fail to unlink partitions that don't ha
Hi Ben,
On Saturday 01 June 2013 10:55 AM, Benjamin Herrenschmidt wrote:
Another question...
Should the core pstore fail to unlink partitions that don't have
an ->erase callback ? IE. Why would you let anyone erase the OFW
common partition for example ? That means that userspace tools
can no lo
Hi Ben,
On Saturday 01 June 2013 10:24 AM, Benjamin Herrenschmidt wrote:
On Fri, 2013-04-26 at 15:26 +0530, Aruna Balakrishnaiah wrote:
The patch set supports compression of oops messages while writing to NVRAM,
this helps in capturing more of oops data to lnx,oops-log. The pstore file
for
On Saturday 01 June 2013 10:22 AM, Benjamin Herrenschmidt wrote:
On Thu, 2013-04-25 at 15:49 +0530, Aruna Balakrishnaiah wrote:
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 8d4fb65..88cc050 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -330,6 +330,9 @@ int pstore_mkfile
by pstore and last oops_data_sz bytes of big_oops_buf to NVRAM so that we
have recent oops messages in lnx,oops-log.
In case decompression fails, it will result in absence of oops file but still
have files (in /dev/pstore) for other partitions.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc
nvram_compress() and zip_oops() is used by the nvram_pstore_write
API to compress oops messages hence re-organise the functions
accordingly to avoid forward declarations.
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 104
1
pstore_get_header_size will return the size of the header added by pstore
while logging messages to the registered buffer.
Signed-off-by: Aruna Balakrishnaiah
---
fs/pstore/platform.c |7 ++-
include/linux/pstore.h |6 ++
2 files changed, 12 insertions(+), 1 deletion(-)
diff
having the compressed data (junk) in the
dmesg file it will skip and continue reading other partitions. This results in
absence of dmesg file but will still have files relating to other parititons.
---
Aruna Balakrishnaiah (3):
Retreive header size from pstore.
powerpc/pseries: Re
This patch exploits pstore subsystem to read details of common partition
in NVRAM to a separate file in /dev/pstore. For instance, common partition
details will be stored in a file named [common-nvram-6].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms
Introduce os_partition member in nvram_os_partition structure to identify
if the partition is an os partition or not. This will be useful to handle
non-os partitions of-config and common.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c
This patch set exploits the pstore subsystem to read details of
of-config partition in NVRAM to a separate file in /dev/pstore.
For instance, of-config partition details will be stored in a
file named [of-nvram-5].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc
This patch set exploits the pstore subsystem to read details of rtas partition
in NVRAM to a separate file in /dev/pstore. For instance, rtas details will be
stored in a file named [rtas-nvram-4].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries
kmsg_dump mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed, 157 insertions(+), 15 deletion
Introduce generic read function to read nvram partitions other than rtas.
nvram_read_error_log will be retained which is used to read rtas partition
from rtasd. nvram_read_partition is the generic read function to read from
any nvram partition.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by
headers. version is assigned 5000 (greater than oops partition size)
so that existing tools will refuse to dump new style partitions as
the length is too large. The updated tools will work with both
old and new format headers.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms
nvram_write_os_partition
- Remove empty pstore callbacks and register pstore only when pstore
is configured
---
Aruna Balakrishnaiah (8):
powerpc/pseries: Remove syslog prefix in uncompressed oops text
powerpc/pseries: Add version and timestamp to oops header
powerpc
Hi Kees,
On Thursday 25 April 2013 02:15 AM, Kees Cook wrote:
On Tue, Apr 23, 2013 at 11:19 PM, Aruna Balakrishnaiah
wrote:
Currently the kernel provides the contents of p-series NVRAM only as a
simple stream of bytes via /dev/nvram, which must be interpreted in user
space by the nvram
On Thursday 25 April 2013 02:13 AM, Kees Cook wrote:
Hi Kees,
On Tue, Apr 23, 2013 at 11:20 PM, Aruna Balakrishnaiah
wrote:
This patch set exploits the pstore subsystem to read details of
of-config partition in NVRAM to a separate file in /dev/pstore.
For instance, of-config partition
This patch exploits pstore subsystem to read details of common partition
in NVRAM to a separate file in /dev/pstore. For instance, common partition
details will be stored in a file named [common-nvram-6].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms
This patch set exploits the pstore subsystem to read details of
of-config partition in NVRAM to a separate file in /dev/pstore.
For instance, of-config partition details will be stored in a
file named [of-nvram-5].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc
Introduce os_partition member in nvram_os_partition structure to identify
if the partition is an os partition or not. This will be useful to handle
non-os partitions of-config and common.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c
This patch set exploits the pstore subsystem to read details of rtas partition
in NVRAM to a separate file in /dev/pstore. For instance, rtas details will be
stored in a file named [rtas-nvram-4].
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries
kmsg_dump mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston
Signed-off-by: Aruna Balakrishnaiah
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed, 157 insertions(+), 15 deletion
Introduce generic read function to read nvram partitions other than rtas.
nvram_read_error_log will be retained which is used to read rtas partition
from rtasd. nvram_read_partition is the generic read function to read from
any nvram partition.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by
headers. version is assigned 5000 (greater than oops partition size)
so that existing tools will refuse to dump new style partitions as
the length is too large. The updated tools will work with both
old and new format headers.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah
Reviewed-by: Jim Keniston
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms
pstore only when pstore
is configured
---
Aruna Balakrishnaiah (8):
powerpc/pseries: Remove syslog prefix in uncompressed oops text
powerpc/pseries: Add version and timestamp to oops header
powerpc/pseries: Introduce generic read function to read nvram-partitions
On Tuesday 16 April 2013 11:50 AM, Aruna Balakrishnaiah wrote:
Currently with this patchset, pstore is not supporting compression of
oops-messages
since it involves some changes in the pstore framework.
big_oops_buf will hold the large part of oops data which will be compressed
and put
to
On Tuesday 16 April 2013 12:44 PM, Benjamin Herrenschmidt wrote:
On Tue, 2013-04-16 at 11:50 +0530, Aruna Balakrishnaiah wrote:
Sure. I will have one #ifdef for declarations and one for function
definitions.
Declarations generally don't need #ifdef's
Sorry by declarations I mean
On Monday 15 April 2013 01:31 PM, Michael Ellerman wrote:
On Wed, Apr 10, 2013 at 12:53:27PM +0530, Aruna Balakrishnaiah wrote:
This patch exploits pstore infrastructure to read the details
from NVRAM's rtas partition.
Does that mean it's exposed in the pstore filesystem?
Yeah t
Hi Michael,
Thanks for reviewing my patches.
On Monday 15 April 2013 01:25 PM, Michael Ellerman wrote:
On Wed, Apr 10, 2013 at 12:53:03PM +0530, Aruna Balakrishnaiah wrote:
This patch exploits pstore infrastructure in power systems.
IBM's system p machines provide persistent storage for
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