| 7c76bb5f7a3d052339b873374333dd0dcc35ce28 |
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11-Jun-2014 |
Chen, Gong <gong.chen@linux.intel.com> |
RAS, extlog: Adjust init flow
Unless the platform has eMCA related capability, don't
need to check if there is conflict with EDAC driver.
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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| d6cae935ec5b7873a8ccd8f0331bef2df729e86a |
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11-Jun-2014 |
Chen, Gong <gong.chen@linux.intel.com> |
trace, eMCA: Add a knob to adjust where to save event log
To avoid saving two copies for one H/W event, add a new
file under debugfs to control how to save event log.
Once this file is opened, the perf/trace will be used,
in the meanwhile, kernel will stop printing event log
to the console. On the other hand, if this file is closed,
kernel will print event log to the console again.
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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| 2dfb7d51a61d7ca91b131c8db612f27d9390f2d5 |
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18-Jun-2014 |
Chen, Gong <gong.chen@linux.intel.com> |
trace, RAS: Add eMCA trace event interface
Add trace interface to elaborate all H/W error related information.
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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| 0a00fd5e20fd5dc89e976e163588d7c54edaf745 |
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03-Jun-2014 |
Lv Zheng <lv.zheng@intel.com> |
ACPICA: Restore error table definitions to reduce code differences between Linux and ACPICA upstream.
The following commit has changed ACPICA table header definitions:
Commit: 88f074f4871a8c212b212b725e4dcdcdb09613c1
Subject: ACPI, CPER: Update cper info
While such definitions are currently maintained in ACPICA. As the
modifications applying to the table definitions affect other OSPMs'
drivers, it is very difficult for ACPICA to initiate a process to
complete the merge. Thus this commit finally only leaves us divergences.
Revert such naming modifications to reduce the source code differecnes
between Linux and ACPICA upstream. No functional changes.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Chen, Gong <gong.chen@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| a238317ce8185519ed083e81e84260907fbbcf7f |
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20-May-2014 |
Lv Zheng <lv.zheng@intel.com> |
ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.
ACPICA doesn't include protections around address space checking, Linux
build tests always complain increased sparse warnings around ACPICA
internal acpi_os_map/unmap_memory() invocations. This patch tries to fix
this issue permanently.
There are 2 choices left for us to solve this issue:
1. Add __iomem address space awareness into ACPICA.
2. Remove sparse checker of __iomem from ACPICA source code.
This patch chooses solution 2, because:
1. Most of the acpi_os_map/unmap_memory() invocations are used for ACPICA.
table mappings, which in fact are not IO addresses.
2. The only IO addresses usage is for "system memory space" mapping code in:
drivers/acpi/acpica/exregion.c
drivers/acpi/acpica/evrgnini.c
drivers/acpi/acpica/exregion.c
The mapped address is accessed in the handler of "system memory space"
- acpi_ex_system_memory_space_handler(). This function in fact can be
changed to invoke acpi_os_read/write_memory() so that __iomem can
always be type-casted in the OSL layer.
According to the above investigation, we drew the following conclusion:
It is not a good idea to introduce __iomem address space awareness into
ACPICA mostly in order to protect non-IO addresses.
We can simply remove __iomem for acpi_os_map/unmap_memory() to remove
__iomem checker for ACPICA code. Then we need to enforce external usages
to invoke other APIs that are aware of __iomem address space.
The external usages are:
drivers/acpi/apei/einj.c
drivers/acpi/acpi_extlog.c
drivers/char/tpm/tpm_acpi.c
drivers/acpi/nvs.c
This patch thus performs cleanups in this way:
1. Add acpi_os_map/unmap_iomem() to be invoked by non-ACPICA code.
2. Remove __iomem from acpi_os_map/unmap_memory().
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| 7ede9f8a1805b26b3141730c9deaea8bc95a64bc |
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19-Dec-2013 |
Jiang Liu <jiang.liu@linux.intel.com> |
ACPI / extlog: replace open-coded _DSM code with helper functions
Use helper functions to simplify _DSM related code in acpi_extlog driver.
Also mark initialization data and functions with __init and __initdata
to reduce memory footprint.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Tested-by: Chen, Gong <gong.chen@linux.intel.com>
Reviewed-by: Chen, Gong <gong.chen@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| 42139eb356e3384759ca143ae04d82376346eb4c |
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06-Dec-2013 |
Chen, Gong <gong.chen@linux.intel.com> |
ACPI, eMCA: Combine eMCA/EDAC event reporting priority
eMCA has higher H/W event reporting priority. Once it is
loaded, EDAC event reporting should be disabled, unless EDAC
overrides eMCA priority via command line parameter "edac_report=force".
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1386310630-12529-4-git-send-email-gong.chen@linux.intel.com
[ Boris: massage printk message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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| 8b48463f89429af408ff695244dc627e1acff4f7 |
|
03-Dec-2013 |
Lv Zheng <lv.zheng@intel.com> |
ACPI: Clean up inclusions of ACPI header files
Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
<acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
inclusions and remove some inclusions of those files that aren't
necessary.
First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds. For CONFIG_ACPI set,
<linux/acpi.h> includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.
Second, there are ordering dependencies between those files that always
have to be met. Namely, it is required that <acpi/acpi_bus.h> be included
prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
latter depends on are always there. And <acpi/acpi.h> which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds. That also is taken care of including
<linux/acpi.h> as appropriate.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| 4b3db708b114fc35ff1e0cd28a2bfb1490dbb5d3 |
|
21-Oct-2013 |
Chen, Gong <gong.chen@linux.intel.com> |
ACPI, x86: Extended error log driver for x86 platform
This H/W error log driver (a.k.a eMCA driver) is implemented based on
http://www.intel.com/content/www/us/en/architecture-and-technology/enhanced-mca-logging-xeon-paper.html
After errors are captured, more detailed platform specific information
can be got via this new enhanced H/W error log driver. Most notably we
can track memory errors back to the DIMM slot silk screen label.
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
|