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    Subject[PATCH v5 0/5] x86: Cleanup and simplify cpu-specific data
    Date
    Various per-cpu fields are define in arch/x86/kernel/smpboot.c that are
    basically equivalent to the cpu-specific data in struct cpuinfo_x86.
    By moving these fields into the structure, a number of codepaths can be
    simplified since they no longer need to care about those fields not
    existing on !SMP builds.

    The size effects on allno (UP) and allyes (MAX_SMP) kernels are as
    follows:

    text data bss dec hex filename
    1369227 181536 1399180 2949943 2d0337 vmlinux.i386.allno
    1370216 181600 1399012 2950828 2d06ac vmlinux.i386.allno.after
    1608231 310968 505088 2424287 24fddf vmlinux.x86_64.allno
    1609232 311032 504896 2425160 250148 vmlinux.x86_64.allno.after
    97643748 6891747 34668544 139204039 84c15c7 vmlinux.i386.allyes
    97643582 6892011 34668544 139204137 84c1629 vmlinux.i386.allyes.after
    85869519 13567071 44511232 143947822 894782e vmlinux.x86_64.allyes
    85869134 13568607 44511232 143948973 8947cad vmlinux.x86_64.allyes.after


    As can be seen, the kernels get slighly larger, but the code reduction/
    simplification should be enough to compensate for it.

    Changes in v5:
    - Reduced the number of files affected in the patchset by keeping helper
    functions in arch/x86/include/asm/smp.h
    - Rebased to latest tip/master

    Kevin Winchester (5):
    x86: Move per cpu cpu_llc_shared_map to a field in struct cpuinfo_x86
    x86: Move per cpu cpu_llc_id to a field in struct cpuinfo_x86
    x86: Move per cpu cpu_sibling_map to a field in struct cpuinfo_x86
    x86: Move per cpu cpu_core_map to a field in struct cpuinfo_x86
    x86: Remove #ifdef CONFIG_SMP sections by moving smp_num_siblings
    into common.c

    arch/x86/include/asm/perf_event_p4.h | 14 +++---------
    arch/x86/include/asm/processor.h | 10 +++++++++
    arch/x86/include/asm/smp.h | 17 ++++----------
    arch/x86/include/asm/topology.h | 8 +++----
    arch/x86/kernel/apic/apic_numachip.c | 2 +-
    arch/x86/kernel/cpu/amd.c | 19 +++++-----------
    arch/x86/kernel/cpu/common.c | 5 +++++
    arch/x86/kernel/cpu/intel_cacheinfo.c | 11 ++--------
    arch/x86/kernel/cpu/mcheck/mce_amd.c | 2 --
    arch/x86/kernel/cpu/perf_event_p4.c | 4 ++--
    arch/x86/kernel/cpu/proc.c | 5 ++---
    arch/x86/kernel/process.c | 5 ++---
    arch/x86/kernel/smpboot.c | 39 +++++++--------------------------
    arch/x86/oprofile/nmi_int.c | 6 -----
    arch/x86/oprofile/op_model_p4.c | 11 +---------
    arch/x86/xen/smp.c | 6 -----
    drivers/cpufreq/p4-clockmod.c | 2 --
    drivers/cpufreq/powernow-k8.c | 7 ------
    drivers/cpufreq/speedstep-ich.c | 2 --
    drivers/hwmon/coretemp.c | 4 ----
    20 files changed, 48 insertions(+), 131 deletions(-)

    --
    1.7.9.5



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