[PATCH 0/9] drivers: cacheinfo support

Sudeep Holla
2014-06-25T17:30:35Z

This series adds a generic cacheinfo support similar to topology. The
implementation is based on x86 cacheinfo support. Currently x86, powerpc,
ia64 and s390 have their own implementations. While adding similar support
to ARM and ARM64, here is the attempt to make it generic quite similar to
topology info support. It also adds the missing ABI documentation for
the cacheinfo sysfs which is already being used.

It moves all the existing different implementations on x86, ia64, powerpc
and s390 to use the generic cacheinfo infrastructure introduced here.
These changes on non-ARM platforms are only compile tested and tested on x86.

This series also adds support for ARM and ARM64 architectures based on
the generic support.

Since there was no objection to the idea in RFC, I am posting non-RFC
version here.

The code can be fetched from:
git://linux-arm.org/linux-skn cacheinfo

Previous RFCs:
[1] https://lkml.org/lkml/2014/1/8/523
[2] https://lkml.org/lkml/2014/2/7/654
[3] https://lkml.org/lkml/2014/2/19/391

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-ia64@vger.kernel.org
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
Cc: x86@kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org

---
Sudeep Holla (9):
drivers: base: add new class "cpu" to group cpu devices
drivers: base: support cpu cache information interface to userspace
via sysfs
ia64: move cacheinfo sysfs to generic cacheinfo infrastructure
s390: move cacheinfo sysfs to generic cacheinfo infrastructure
x86: move cacheinfo sysfs to generic cacheinfo infrastructure
powerpc: move cacheinfo sysfs to generic cacheinfo infrastructure
ARM64: kernel: add support for cpu cache information
ARM: kernel: add support for cpu cache information
ARM: kernel: add outer cache support for cacheinfo implementation

Documentation/ABI/testing/sysfs-devices-system-cpu | 41 ++
arch/arm/include/asm/outercache.h | 13 +
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/cacheinfo.c | 249 +++++++
arch/arm/mm/Kconfig | 13 +
arch/arm/mm/cache-l2x0.c | 10 +
arch/arm/mm/cache-tauros2.c | 34 +
arch/arm/mm/cache-xsc3l2.c | 15 +
arch/arm64/kernel/Makefile | 3 +-
arch/arm64/kernel/cacheinfo.c | 135 ++++
arch/ia64/kernel/topology.c | 401 ++--------
arch/powerpc/kernel/cacheinfo.c | 813 +++------------------
arch/powerpc/kernel/cacheinfo.h | 8 -
arch/powerpc/kernel/sysfs.c | 12 +-
arch/s390/kernel/cache.c | 388 +++-------
arch/x86/kernel/cpu/intel_cacheinfo.c | 655 ++++-------------
drivers/base/Makefile | 2 +-
drivers/base/cacheinfo.c | 564 ++++++++++++++
drivers/base/core.c | 39 +-
drivers/base/cpu.c | 7 +
include/linux/cacheinfo.h | 56 ++
include/linux/cpu.h | 2 +
22 files changed, 1590 insertions(+), 1871 deletions(-)
create mode 100644 arch/arm/kernel/cacheinfo.c
create mode 100644 arch/arm64/kernel/cacheinfo.c
delete mode 100644 arch/powerpc/kernel/cacheinfo.h
create mode 100644 drivers/base/cacheinfo.c
create mode 100644 include/linux/cacheinfo.h

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1.8.3.2