From: Ingo Molnar <mingo@kernel.org>
To: Kevin Hao <haokexin@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Peter Zijlstra <peterz@infradead.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 0/6] powerpc: use jump label for {cpu,mmu}_has_feature()
Date: Tue, 25 Aug 2015 10:23:47 +0200 [thread overview]
Message-ID: <20150825082346.GB19914@gmail.com> (raw)
In-Reply-To: <1440415228-8006-1-git-send-email-haokexin@gmail.com>
* 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
prev parent reply other threads:[~2015-08-25 8:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-24 11:20 [PATCH v2 0/6] powerpc: use jump label for {cpu,mmu}_has_feature() Kevin Hao
2015-08-24 11:20 ` [PATCH v2 1/6] jump_label: make it possible for the archs to invoke jump_label_init() much earlier Kevin Hao
2015-08-24 11:20 ` [PATCH v2 2/6] powerpc: invoke jump_label_init() in a much earlier stage Kevin Hao
2015-08-24 11:20 ` [PATCH v2 3/6] powerpc: kill mfvtb() Kevin Hao
2015-09-07 9:29 ` [v2,3/6] " Michael Ellerman
2015-09-08 2:59 ` Kevin Hao
2015-08-24 11:20 ` [PATCH v2 4/6] powerpc: move the cpu_has_feature to a separate file Kevin Hao
2015-08-24 11:20 ` [PATCH v2 5/6] powerpc: use the jump label for cpu_has_feature Kevin Hao
2015-08-24 11:20 ` [PATCH v2 6/6] powerpc: use jump label for mmu_has_feature Kevin Hao
2015-08-25 8:23 ` Ingo Molnar [this message]
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