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SubjectRe: [PATCH v2 0/6] powerpc: use jump label for {cpu,mmu}_has_feature()

* Kevin Hao <haokexin@gmail.com> wrote:

> Hi,
>
> v2:
> Drop the following two patches as suggested by Ingo and Peter:
> jump_label: no need to acquire the jump_label_mutex in jump_lable_init()
> jump_label: introduce DEFINE_STATIC_KEY_{TRUE,FALSE}_ARRAY macros
>
> v1:
> I have tried to change the {cpu,mmu}_has_feature() to use jump label two yeas
> ago [1]. But that codes seem a bit ugly. This is a reimplementation by moving the
> jump_label_init() much earlier so the jump label can be used in a very earlier
> stage. Boot test on p4080ds, t2080rdb and powermac (qemu). This patch series
> is against linux-next.
>
> [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2013-September/111026.html
>
> Kevin Hao (6):
> jump_label: make it possible for the archs to invoke jump_label_init()
> much earlier
> powerpc: invoke jump_label_init() in a much earlier stage
> powerpc: kill mfvtb()
> powerpc: move the cpu_has_feature to a separate file
> powerpc: use the jump label for cpu_has_feature
> powerpc: use jump label for mmu_has_feature
>
> arch/powerpc/include/asm/cacheflush.h | 1 +
> arch/powerpc/include/asm/cpufeatures.h | 34 ++++++++++++++++++++++++++++++
> arch/powerpc/include/asm/cputable.h | 16 +++++++-------
> arch/powerpc/include/asm/cputime.h | 1 +
> arch/powerpc/include/asm/dbell.h | 1 +
> arch/powerpc/include/asm/dcr-native.h | 1 +
> arch/powerpc/include/asm/mman.h | 1 +
> arch/powerpc/include/asm/mmu.h | 29 ++++++++++++++++++++++++++
> arch/powerpc/include/asm/reg.h | 9 --------
> arch/powerpc/include/asm/time.h | 3 ++-
> arch/powerpc/include/asm/xor.h | 1 +
> arch/powerpc/kernel/align.c | 1 +
> arch/powerpc/kernel/cputable.c | 37 +++++++++++++++++++++++++++++++++
> arch/powerpc/kernel/irq.c | 1 +
> arch/powerpc/kernel/process.c | 1 +
> arch/powerpc/kernel/setup-common.c | 1 +
> arch/powerpc/kernel/setup_32.c | 5 +++++
> arch/powerpc/kernel/setup_64.c | 4 ++++
> arch/powerpc/kernel/smp.c | 1 +
> arch/powerpc/platforms/cell/pervasive.c | 1 +
> arch/powerpc/xmon/ppc-dis.c | 1 +
> kernel/jump_label.c | 3 +++
> 22 files changed, 135 insertions(+), 18 deletions(-)
> create mode 100644 arch/powerpc/include/asm/cpufeatures.h

Looks good to me!

Thanks,

Ingo


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