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 LPARs
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 thats right
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 meant variable
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
file in /dev/pstore. For instance Oops messages will stored in a
file named [dmesg-nvram-2].
---
Aruna Balakrishnaiah (8):
Remove syslog prefix in uncompressed oops text
Add version and timestamp to oops header
Introduce generic read function to read nvram-partitions
Read
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1
Introduce version and timestamp information in the oops header.
oops_log_info (oops header) holds version (to distinguish between old
and new format oops header), length of the oops text
(compressed or uncompressed) and timestamp.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
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 ar
/write the oops messages from/to this
partition via pstore.
Signed-off-by: Jim Keniston jkeni...@us.ibm.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 145
1 file changed, 145 insertions(+)
diff --git
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 in subsequent patches.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston
This patch exploits pstore infrastructure to read the details
from NVRAM's of-config partition.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 58 ++--
fs/pstore
This patch exploits pstore infrastructure to read the details
from NVRAM's common partition.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 17 -
fs/pstore/inode.c
This patch exploits pstore infrastructure to read the details
from NVRAM's rtas partition.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 33 +---
fs/pstore
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
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 Balakrishnaiah ar
On Wednesday 07 August 2013 05:06 AM, Tony Luck wrote:
On Mon, Aug 5, 2013 at 2:20 PM, Tony Luck tony.l...@gmail.com 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:
Hi Tony,
On Wednesday 07 August 2013 08:55 AM, Tony Luck wrote:
On Tue, Aug 6, 2013 at 6:58 PM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com 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
On Friday 23 August 2013 04:47 AM, Luck, Tony wrote:
1[ 383.209057] RIP [813d3946] sysrq_handle_crash+0x16/0x20
4[ 383.209057] RSP 88006f551e80
4[ 383.209057] CR2:
4[ 383.209057] ---[ end trace 04a1cddad37b4b33 ]---
3[ 383.209057] pstore: compression failed
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
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
pstore: Add compression
-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
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
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 ar...@linux.vnet.ibm.com
---
drivers/firmware/efi/efi
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 ar...@linux.vnet.ibm.com
---
fs/pstore/inode.c|7 ---
fs/pstore/internal.h |5 +++--
fs
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 ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
drivers/acpi/apei/erst.c
as 'hsize' will be removed in the subsequent patch.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 102
1 file changed, 12 insertions(+), 90 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvram.c
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 ar...@linux.vnet.ibm.com
---
drivers/acpi/apei/erst.c | 13 -
1
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 Balakrishnaiah ar...@linux.vnet.ibm.com
---
fs/pstore/ram.c | 36
compatibilty with old format oops header when reading from pstore.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
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
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 ar...@linux.vnet.ibm.com
---
fs/pstore/Kconfig |2 ++
1 file changed, 2 insertions(+)
diff --git
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 ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c | 148
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: Aruna Balakrishnaiah ar
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 ar...@linux.vnet.ibm.com
---
fs/pstore/Kconfig |2 ++
1 file changed, 2 insertions(+)
diff --git
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 (11
-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
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
as 'hsize' will be removed in the subsequent patch.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 40
1 file changed, 40 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvram.c
b/arch/powerpc
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 ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
drivers/acpi/apei/erst.c
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 ar...@linux.vnet.ibm.com
---
fs/pstore/inode.c|9 +
fs/pstore/internal.h |5 +++--
fs
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: Aruna Balakrishnaiah ar
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 ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c | 124
compatibilty with old format oops header when reading from pstore.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 34 +---
1 file changed, 27 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/pseries
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 ar...@linux.vnet.ibm.com
---
drivers/firmware/efi/efi
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 Balakrishnaiah ar...@linux.vnet.ibm.com
---
fs/pstore/ram.c | 36
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 ar...@linux.vnet.ibm.com
---
drivers/acpi/apei/erst.c | 13 -
1
Hi Michael,
On Wednesday 19 June 2013 11:45 AM, Michael Neuling wrote:
Aruna Balakrishnaiah ar...@linux.vnet.ibm.com 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
Enable PSTORE in pseries_defconfig
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
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
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 seiji.agu...@hds.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
fs/pstore
Remove the messages indicating compression failure as it will
add to the space during panic path.
Reported-by: Seiji Aguchi seiji.agu...@hds.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c |4
1 file changed, 4 deletions(-)
diff --git a/fs
Since zlib_deflateInit2() is used for specifying window bit during compression,
zlib_inflateInit2() is appropriate for decompression.
Reported-by: Seiji Aguchi seiji.agu...@hds.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c |2 +-
1 file changed, 1
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 seiji.agu...@hds.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
Changes from
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
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
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
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
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
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 have
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1
by and 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
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 ar...@linux.vnet.ibm.com
Reviewed
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 ar
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim
mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston jkeni...@us.ibm.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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
of 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
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 ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c |7 ++-
include/linux/pstore.h |6 ++
2 files changed, 12 insertions
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 ar
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 ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 104
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 ar...@linux.vnet.ibm.com
---
arch/powerpc/configs
can always determine what is being changed, by looking at the diff.
The why will be long forgotten.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/configs/pseries_defconfig |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs
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 ar...@linux.vnet.ibm.com
---
v3:
Move pstore config
pstore_erase is used to erase the record from the persistent store.
So if a driver has not defined pstore_erase callback return
-EINVAL instead of unlinking a file as deleting the file without
erasing its record in persistent store will give a wrong impression
to customers.
Signed-off-by: Aruna
Hi Keek,
On Monday 24 June 2013 10:33 PM, Kees Cook wrote:
On Mon, Jun 24, 2013 at 12:48 AM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com wrote:
pstore_erase is used to erase the record from the persistent store.
So if a driver has not defined pstore_erase callback return
-EINVAL instead
Hi Kees,
On Monday 24 June 2013 11:27 PM, Kees Cook wrote:
On Sun, Jun 23, 2013 at 11:23 PM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com 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
pstore_erase is used to erase the record from the persistent store.
So if a driver has not defined pstore_erase callback return
-EPERM instead of unlinking a file as deleting the file without
erasing its record in persistent store will give a wrong impression
to customers.
Signed-off-by: Aruna
On Tuesday 25 June 2013 10:40 PM, Tony Luck wrote:
On Tue, Jun 25, 2013 at 9:41 AM, Kees Cook keesc...@chromium.org wrote:
On Tue, Jun 25, 2013 at 2:03 AM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com wrote:
pstore_erase is used to erase the record from the persistent store.
So if a driver
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
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1
mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston jkeni...@us.ibm.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed
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 ar
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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 ar...@linux.vnet.ibm.com
Reviewed
On Thursday 25 April 2013 02:13 AM, Kees Cook wrote:
Hi Kees,
On Tue, Apr 23, 2013 at 11:20 PM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com 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
Hi Kees,
On Thursday 25 April 2013 02:15 AM, Kees Cook wrote:
On Tue, Apr 23, 2013 at 11:19 PM, Aruna Balakrishnaiah
ar...@linux.vnet.ibm.com 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
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 oops text
powerpc/pseries: Add version and timestamp to oops header
powerpc
Removal of syslog prefix in the uncompressed oops text will
help in capturing more oops data.
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c |2 +-
1 file changed, 1 insertion(+), 1
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 ar...@linux.vnet.ibm.com
Reviewed
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 ar
mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston jkeni...@us.ibm.com
Signed-off-by: Aruna Balakrishnaiah ar...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/nvram.c | 172 +---
1 file changed
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim
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 ar...@linux.vnet.ibm.com
Reviewed-by: Jim Keniston jkeni...@us.ibm.com
of 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
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 ar...@linux.vnet.ibm.com
---
fs/pstore/platform.c |7 ++-
include/linux/pstore.h |6 ++
2 files changed, 12 insertions
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 ar
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