Messages in this thread | | | Date | Wed, 26 Jan 2011 11:56:37 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 4/4] x86, amd: Support L3 Cache Partitioning on AMD family 0x15 CPUs |
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* Hans Rosenfeld <hans.rosenfeld@amd.com> wrote:
> L3 Cache Partitioning allows selecting which of the 4 L3 subcaches can > be used for evictions by the L2 cache of each compute unit. By writing a > 4-bit hexadecimal mask into the the sysfs file /sys/devices/system/cpu/\ > cpuX/cache/index3/subcaches, the user can set the enabled subcaches for > a CPU. The settings are directly read from and written to the hardware, > so there is no way to have contradicting settings for two CPUs belonging > to the same compute unit. Writing will always overwrite any previous > setting for a compute unit. > > Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com> > --- > arch/x86/include/asm/amd_nb.h | 3 + > arch/x86/kernel/amd_nb.c | 55 +++++++++++++++++++++++++ > arch/x86/kernel/cpu/intel_cacheinfo.c | 73 +++++++++++++++++++++++++++----- > 3 files changed, 119 insertions(+), 12 deletions(-)
I have picked up the other 3 patches, but this one causes this build failure:
arch/x86/kernel/amd_nb.c: In function ‘amd_get_subcaches’: arch/x86/kernel/amd_nb.c:129:36: error: ‘struct cpuinfo_x86’ has no member named ‘compute_unit_id’ arch/x86/kernel/amd_nb.c: In function ‘amd_set_subcaches’: arch/x86/kernel/amd_nb.c:154:28: error: ‘struct cpuinfo_x86’ has no member named ‘compute_unit_id’ arch/x86/kernel/amd_nb.c:155:36: error: ‘struct cpuinfo_x86’ has no member named ‘compute_unit_id’ arch/x86/kernel/amd_nb.c: In function ‘amd_get_subcaches’: arch/x86/kernel/amd_nb.c:130:1: warning: control reaches end of non-void function
Thanks,
Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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