From: Kevin Winchester <kjwinchester@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Kevin Winchester <kjwinchester@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Randy Dunlap <rdunlap@xenotime.net>,
Nick Bowler <nbowler@elliptictech.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 0/5] x86: Cleanup and simplify cpu-specific data
Date: Thu, 23 Feb 2012 19:57:51 -0400 [thread overview]
Message-ID: <1330041476-719-1-git-send-email-kjwinchester@gmail.com> (raw)
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
1586721 304864 506208 2397793 249661 vmlinux.allno
1588517 304928 505920 2399365 249c85 vmlinux.allno.after
84706053 13212311 42434560 140352924 85d9d9c vmlinux.allyes
84705333 13213799 42434560 140353692 85da09c vmlinux.allyes.afte
As can be seen, the kernels get slighly larger, but the code reduction/
simplification should be enough to compensate for it.
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 | 26 +---------
arch/x86/include/asm/topology.h | 10 ++--
arch/x86/kernel/apic/apic_numachip.c | 2 +-
arch/x86/kernel/cpu/amd.c | 18 ++-----
arch/x86/kernel/cpu/common.c | 7 ++-
arch/x86/kernel/cpu/intel_cacheinfo.c | 19 ++-----
arch/x86/kernel/cpu/mcheck/mce_amd.c | 9 ++--
arch/x86/kernel/cpu/perf_event_p4.c | 4 +-
arch/x86/kernel/cpu/proc.c | 8 +--
arch/x86/kernel/cpu/topology.c | 2 -
arch/x86/kernel/process.c | 3 +-
arch/x86/kernel/smpboot.c | 95 +++++++++++++--------------------
arch/x86/kernel/tsc_sync.c | 2 +-
arch/x86/oprofile/nmi_int.c | 6 --
arch/x86/oprofile/op_model_p4.c | 11 +----
arch/x86/xen/smp.c | 6 --
drivers/cpufreq/acpi-cpufreq.c | 2 +-
drivers/cpufreq/p4-clockmod.c | 4 +-
drivers/cpufreq/powernow-k8.c | 13 +----
drivers/cpufreq/speedstep-ich.c | 6 +-
drivers/hwmon/coretemp.c | 6 +--
23 files changed, 92 insertions(+), 191 deletions(-)
--
1.7.9.1
next reply other threads:[~2012-02-23 23:58 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-23 23:57 Kevin Winchester [this message]
2012-02-23 23:57 ` [PATCH v4 1/5] x86: Move per cpu cpu_llc_shared_map to a field in struct cpuinfo_x86 Kevin Winchester
2012-02-23 23:57 ` [PATCH v4 2/5] x86: Move per cpu cpu_llc_id " Kevin Winchester
2012-02-23 23:57 ` [PATCH v4 3/5] x86: Move per cpu cpu_sibling_map " Kevin Winchester
2012-02-23 23:57 ` [PATCH v4 4/5] x86: Move per cpu cpu_core_map " Kevin Winchester
2012-02-23 23:57 ` [PATCH v4 5/5] x86: Remove #ifdef CONFIG_SMP sections by moving smp_num_siblings into common.c Kevin Winchester
2012-02-24 11:47 ` [PATCH v4 0/5] x86: Cleanup and simplify cpu-specific data Borislav Petkov
2012-02-24 12:22 ` Kevin Winchester
2012-02-24 12:30 ` Borislav Petkov
2012-02-27 11:59 ` Ingo Molnar
2012-02-28 0:52 ` Kevin Winchester
2012-02-28 3:43 ` H. Peter Anvin
2012-02-28 8:24 ` Ingo Molnar
2012-02-28 8:31 ` H. Peter Anvin
2012-03-01 13:06 ` Kevin Winchester
2012-03-01 13:45 ` Ingo Molnar
2012-03-28 22:43 ` [PATCH v5 " Kevin Winchester
2012-03-28 22:43 ` [PATCH v5 1/5] x86: Move per cpu cpu_llc_shared_map to a field in struct cpuinfo_x86 Kevin Winchester
2012-03-28 22:43 ` [PATCH v5 2/5] x86: Move per cpu cpu_llc_id " Kevin Winchester
2012-03-28 22:43 ` [PATCH v5 3/5] x86: Move per cpu cpu_sibling_map " Kevin Winchester
2012-03-28 22:43 ` [PATCH v5 4/5] x86: Move per cpu cpu_core_map " Kevin Winchester
2012-03-28 22:43 ` [PATCH v5 5/5] x86: Remove #ifdef CONFIG_SMP sections by moving smp_num_siblings into common.c Kevin Winchester
2012-04-26 18:09 ` [PATCH v5 0/5] x86: Cleanup and simplify cpu-specific data Kevin Winchester
2012-04-26 19:48 ` H. Peter Anvin
[not found] ` <CAELBVzAi_yndZbDc0TkXhbqzn2wULpnsFMA_dop=Uvaii8tkqg@mail.gmail.com>
2012-04-26 21:21 ` H. Peter Anvin
2012-04-27 23:37 ` Kevin Winchester
2012-04-29 12:47 ` Borislav Petkov
2012-04-29 22:55 ` Kevin Winchester
2012-04-29 23:33 ` [PATCH v6 " Kevin Winchester
2012-04-29 23:33 ` [PATCH v6 1/5] x86: Move per cpu cpu_llc_shared_map to a field in struct cpuinfo_x86 Kevin Winchester
2012-04-29 23:37 ` H. Peter Anvin
2012-04-30 15:05 ` Kevin Winchester
2012-05-07 8:32 ` Ingo Molnar
2012-04-29 23:33 ` [PATCH v6 2/5] x86: Move per cpu cpu_llc_id " Kevin Winchester
2012-04-29 23:33 ` [PATCH v6 3/5] x86: Move per cpu cpu_sibling_map " Kevin Winchester
2012-04-29 23:33 ` [PATCH v6 4/5] x86: Move per cpu cpu_core_map " Kevin Winchester
2012-04-29 23:33 ` [PATCH v6 5/5] x86: Remove #ifdef CONFIG_SMP sections by moving smp_num_siblings into common.c Kevin Winchester
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