This series consists of a couple of cleanups and a few feature additions, all of which are more or less related to system topology (threads, cores, caches, sysfs...) These are independent of each other except for 4 and 5 (core sibling and core id info).
I'd say the highlights are the last three patches, which add core and cache information to sysfs. Here is some example output with the patches applied: (Power5) # grep -r . /sys/devices/system/cpu/cpu0/cache/ | sed 's/\/sys\/devices\/system\/cpu\///' cpu0/cache/index0/type:Data cpu0/cache/index0/level:1 cpu0/cache/index0/size:32K cpu0/cache/index0/coherency_line_size:128 cpu0/cache/index0/number_of_sets:64 cpu0/cache/index0/ways_of_associativity:4 cpu0/cache/index1/type:Instruction cpu0/cache/index1/level:1 cpu0/cache/index1/size:64K cpu0/cache/index1/coherency_line_size:128 cpu0/cache/index1/number_of_sets:256 cpu0/cache/index1/ways_of_associativity:2 cpu0/cache/index2/type:Unified cpu0/cache/index2/level:2 cpu0/cache/index2/size:1920K cpu0/cache/index2/coherency_line_size:128 cpu0/cache/index2/number_of_sets:1536 cpu0/cache/index2/ways_of_associativity:10 cpu0/cache/index3/type:Unified cpu0/cache/index3/level:3 cpu0/cache/index3/size:36864K cpu0/cache/index3/coherency_line_size:128 cpu0/cache/index3/number_of_sets:1 cpu0/cache/index3/ways_of_associativity:0 (Power6) # grep -r . /sys/devices/system/cpu/cpu0/topology/ | sed \ 's/\/sys\/devices\/system\/cpu\///' cpu0/topology/physical_package_id:-1 cpu0/topology/core_id:0 cpu0/topology/thread_siblings:00000003 cpu0/topology/thread_siblings_list:0-1 cpu0/topology/core_siblings:0000000f cpu0/topology/core_siblings_list:0-3 Nathan Lynch (6): kill useless SMT code in prom_hold_cpus register_cpu_online should be __cpuinit Update cpu_sibling_maps dynamically make core sibling information available to userspace make core id information available to userspace show processor cache information in sysfs arch/powerpc/kernel/prom_init.c | 39 +---- arch/powerpc/kernel/setup-common.c | 24 --- arch/powerpc/kernel/setup_64.c | 3 - arch/powerpc/kernel/smp.c | 126 ++++++++++++++- arch/powerpc/kernel/sysfs.c | 310 +++++++++++++++++++++++++++++++++++- include/asm-powerpc/smp.h | 2 + include/asm-powerpc/topology.h | 2 + 7 files changed, 439 insertions(+), 67 deletions(-) _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
