| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20081024142056.6a2d082a@infradead.org>
Date: Fri, 24 Oct 2008 14:20:56 -0700
From: Arjan van de Ven <arjan@...radead.org>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, Matt Mackall <mpm@...enic.com>
Subject: [pull request] getting rid of __cpuinit
Hi Linus,
this is one of those pull requests for which the best timing is likely at the
end of the merge window due to touching a large number of files in a trivial way.
In fact, 6 of the 8 patches were done via regexps:
find -name "*.c" | xargs sed -i "s/^__cpuinit //g"
find arch/ -name "*.h" | xargs sed -i "s/ __cpuinit//g"
find -name "*.c" | xargs sed -i "s/ __cpuinit$//g"
find -name "*.c" | xargs sed -i "s/ __cpuinitdata//g"
find -name "*.c" | xargs sed -i "s/ __cpuexit / /g"
find -name "*.c" | xargs sed -i "s/ __cpuinit / /g"
(I suppose asking for a "git sed" is too much to do...)
The point of this series is to get rid of __cpuinit. (I'll be working on other __XXXXinit after this)
__cpuinit is a NOOP for CONFIG_HOTPLUG_CPU, which on for just about anybody in practice
(in fact I had to disable 6 common options to even be ABLE to turn it off for size testing)
and all distros also ship with it enabled.
Yet it's a rather error prone construct since the rules of this sort of __XXXXinit thing are
rather complex and convoluted.. better to just get rid of it entirely.
As for the code size effect, after I spent a bunch of time cursing and trying to find out
how to disable HOTPLUG_CPU, I managed to get an x86-64 build that actually shows how much space
we ACTUALLY save with all the __cpuinit's in the tree... it's less than 2Kb. That is, if you manage
to turn it actually off.
text data bss dec hex filename
4618096 1358684 848588 6825368 682598 vmlinux.before
4619965 1356908 848716 6825589 682675 vmlinux.after
Please consider pulling; or if you think another time is more appropriate just let me know;
re-running the regexps isn't all that much work.
Note: the patch leaves the __cpuinit macro still existent so that in-flight code that might
use it won't immediately break, but over time I want to kill that as well. (just not right now,
because it could break various people's workflow and a few empty defines don't hurt all that much)
The following changes since commit e013e13bf605b9e6b702adffbe2853cfc60e7806:
Jens Axboe (1):
libata: fix bug with non-ncq devices
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-init.git ..BRANCH.NOT.VERIFIED..
Arjan van de Ven (8):
cpuinit: get rid of __cpuinit, first regexp
cpuinit: get rid of __cpuinit, second regexp
cpuinit: get rid of __cpuinit, third regexp
cpuinit: get rid of __cpuinit, fourth regexp
cpuinit: get rid of __cpuinit, fifth regexp
cpuinit: get rid of __cpuinit, sixth regexp
cpuinit: get rid of __cpuinit, manual fixups
cpuinit: turn __cpuinit into nops
Documentation/cpu-hotplug.txt | 4 +-
arch/alpha/kernel/smp.c | 4 +-
arch/arm/common/gic.c | 2 +-
arch/arm/kernel/smp.c | 12 ++--
arch/arm/mach-realview/localtimer.c | 8 ++--
arch/arm/mach-realview/platsmp.c | 6 +-
arch/cris/arch-v32/kernel/smp.c | 2 +-
arch/frv/kernel/setup.c | 2 +-
arch/ia64/kernel/err_inject.c | 8 ++--
arch/ia64/kernel/mca.c | 12 ++--
arch/ia64/kernel/numa.c | 4 +-
arch/ia64/kernel/palinfo.c | 4 +-
arch/ia64/kernel/salinfo.c | 4 +-
arch/ia64/kernel/setup.c | 10 ++--
arch/ia64/kernel/smpboot.c | 12 ++--
arch/ia64/kernel/topology.c | 18 ++++----
arch/ia64/mm/contig.c | 2 +-
arch/ia64/mm/discontig.c | 2 +-
arch/ia64/sn/kernel/setup.c | 4 +-
arch/ia64/xen/hypervisor.c | 2 +-
arch/m32r/kernel/smpboot.c | 2 +-
arch/mips/kernel/cevt-bcm1480.c | 2 +-
arch/mips/kernel/cevt-r4k.c | 2 +-
arch/mips/kernel/cevt-sb1250.c | 2 +-
arch/mips/kernel/cevt-smtc.c | 2 +-
arch/mips/kernel/cpu-bugs64.c | 4 +-
arch/mips/kernel/cpu-probe.c | 10 ++--
arch/mips/kernel/smp-mt.c | 6 +-
arch/mips/kernel/smp-up.c | 6 +-
arch/mips/kernel/smp.c | 6 +-
arch/mips/kernel/smtc.c | 2 +-
arch/mips/kernel/spram.c | 14 +++---
arch/mips/kernel/time.c | 2 +-
arch/mips/kernel/traps.c | 8 ++--
arch/mips/kernel/watch.c | 2 +-
arch/mips/lib/uncached.c | 2 +-
arch/mips/mipssim/sim_smtc.c | 6 +-
arch/mips/mipssim/sim_time.c | 2 +-
arch/mips/mm/c-r3k.c | 8 ++--
arch/mips/mm/c-r4k.c | 34 +++++++-------
arch/mips/mm/c-tx39.c | 2 +-
arch/mips/mm/page.c | 40 ++++++++--------
arch/mips/mm/sc-ip22.c | 2 +-
arch/mips/mm/sc-mips.c | 2 +-
arch/mips/mm/sc-r5k.c | 2 +-
arch/mips/mm/sc-rm7k.c | 6 +-
arch/mips/mm/tlb-r3k.c | 2 +-
arch/mips/mm/tlb-r4k.c | 8 ++--
arch/mips/mm/tlb-r8k.c | 4 +-
arch/mips/mm/tlbex.c | 70 ++++++++++++++--------------
arch/mips/mm/uasm.c | 70 ++++++++++++++--------------
arch/mips/mm/uasm.h | 24 +++++-----
arch/mips/mti-malta/malta-smtc.c | 6 +-
arch/mips/mti-malta/malta-time.c | 2 +-
arch/mips/pci/pci-ip27.c | 2 +-
arch/mips/pmc-sierra/yosemite/smp.c | 12 ++--
arch/mips/sgi-ip27/ip27-init.c | 4 +-
arch/mips/sgi-ip27/ip27-smp.c | 6 +-
arch/mips/sgi-ip27/ip27-timer.c | 6 +-
arch/mips/sgi-ip27/ip27-xtalk.c | 6 +-
arch/mips/sibyte/bcm1480/smp.c | 8 ++--
arch/mips/sibyte/sb1250/smp.c | 8 ++--
arch/parisc/kernel/hardware.c | 2 +-
arch/parisc/kernel/processor.c | 2 +-
arch/parisc/kernel/smp.c | 4 +-
arch/powerpc/kernel/smp.c | 2 +-
arch/powerpc/kernel/sysfs.c | 12 ++--
arch/powerpc/mm/numa.c | 12 ++--
arch/s390/appldata/appldata_base.c | 8 ++--
arch/s390/kernel/entry.h | 2 +-
arch/s390/kernel/setup.c | 4 +-
arch/s390/kernel/smp.c | 10 ++--
arch/sh/kernel/setup.c | 2 +-
arch/sh/kernel/smp.c | 4 +-
arch/sh/kernel/timers/timer-broadcast.c | 2 +-
arch/sh/kernel/traps_32.c | 2 +-
arch/sparc/kernel/smp.c | 8 ++--
arch/sparc/kernel/sun4d_smp.c | 2 +-
arch/sparc/kernel/sun4m_smp.c | 4 +-
arch/sparc64/kernel/ds.c | 4 +-
arch/sparc64/kernel/entry.h | 2 +-
arch/sparc64/kernel/irq.c | 4 +-
arch/sparc64/kernel/mdesc.c | 2 +-
arch/sparc64/kernel/smp.c | 4 +-
arch/sparc64/kernel/sysfs.c | 4 +-
arch/sparc64/mm/init.c | 2 +-
arch/x86/include/asm/ds.h | 2 +-
arch/x86/include/asm/mmconfig.h | 4 +-
arch/x86/include/asm/mpspec.h | 2 +-
arch/x86/include/asm/numa_64.h | 8 ++--
arch/x86/include/asm/ptrace.h | 2 +-
arch/x86/include/asm/smp.h | 4 +-
arch/x86/kernel/acpi/boot.c | 4 +-
arch/x86/kernel/apic.c | 20 ++++----
arch/x86/kernel/cpu/addon_cpuid_features.c | 6 +-
arch/x86/kernel/cpu/amd.c | 22 ++++----
arch/x86/kernel/cpu/centaur.c | 26 +++++-----
arch/x86/kernel/cpu/centaur_64.c | 6 +-
arch/x86/kernel/cpu/common.c | 58 +++++++++++-----------
arch/x86/kernel/cpu/cpufreq/powernow-k8.c | 4 +-
arch/x86/kernel/cpu/cyrix.c | 40 ++++++++--------
arch/x86/kernel/cpu/intel.c | 22 ++++----
arch/x86/kernel/cpu/intel_cacheinfo.c | 44 +++++++++---------
arch/x86/kernel/cpu/mcheck/mce_64.c | 16 +++---
arch/x86/kernel/cpu/mcheck/mce_amd_64.c | 10 ++--
arch/x86/kernel/cpu/mcheck/mce_intel_64.c | 4 +-
arch/x86/kernel/cpu/mcheck/therm_throt.c | 8 ++--
arch/x86/kernel/cpu/transmeta.c | 6 +-
arch/x86/kernel/cpu/umc.c | 2 +-
arch/x86/kernel/cpuid.c | 4 +-
arch/x86/kernel/ds.c | 2 +-
arch/x86/kernel/genx2apic_uv_x.c | 4 +-
arch/x86/kernel/i387.c | 6 +-
arch/x86/kernel/irq_32.c | 2 +-
arch/x86/kernel/microcode_core.c | 2 +-
arch/x86/kernel/mmconf-fam10h_64.c | 14 +++---
arch/x86/kernel/msr.c | 4 +-
arch/x86/kernel/numaq_32.c | 4 +-
arch/x86/kernel/process.c | 8 ++--
arch/x86/kernel/ptrace.c | 2 +-
arch/x86/kernel/setup.c | 2 +-
arch/x86/kernel/setup_percpu.c | 16 +++---
arch/x86/kernel/smpboot.c | 28 ++++++------
arch/x86/kernel/smpcommon.c | 2 +-
arch/x86/kernel/tlb_64.c | 2 +-
arch/x86/kernel/tsc.c | 2 +-
arch/x86/kernel/tsc_sync.c | 18 ++++----
arch/x86/kernel/vsyscall_64.c | 6 +-
arch/x86/kernel/xsave.c | 2 +-
arch/x86/mach-voyager/voyager_smp.c | 4 +-
arch/x86/mm/init_64.c | 4 +-
arch/x86/mm/numa_64.c | 2 +-
arch/x86/mm/pat.c | 2 +-
arch/x86/pci/amd_bus.c | 4 +-
arch/x86/xen/setup.c | 6 +-
arch/x86/xen/smp.c | 8 ++--
arch/x86/xen/spinlock.c | 2 +-
arch/x86/xen/xen-ops.h | 2 +-
arch/xtensa/kernel/time.c | 2 +-
block/blk-softirq.c | 4 +-
drivers/acpi/bus.c | 2 +-
drivers/acpi/ec.c | 2 +-
drivers/acpi/numa.c | 2 +-
drivers/acpi/processor_core.c | 4 +-
drivers/acpi/processor_idle.c | 6 +-
drivers/base/cpu.c | 4 +-
drivers/base/topology.c | 8 ++--
drivers/cpufreq/cpufreq.c | 2 +-
drivers/cpufreq/cpufreq_stats.c | 2 +-
drivers/hwmon/coretemp.c | 4 +-
drivers/infiniband/hw/ehca/ehca_irq.c | 6 +-
drivers/s390/sysinfo.c | 2 +-
include/linux/cpu.h | 2 +-
include/linux/init.h | 12 ++--
init/calibrate.c | 6 +-
kernel/cpu.c | 6 +-
kernel/fork.c | 4 +-
kernel/hrtimer.c | 6 +-
kernel/rcuclassic.c | 6 +-
kernel/rcupreempt.c | 6 +-
kernel/relay.c | 2 +-
kernel/sched.c | 8 ++--
kernel/smp.c | 2 +-
kernel/softirq.c | 8 ++--
kernel/softlockup.c | 4 +-
kernel/timer.c | 10 ++--
lib/percpu_counter.c | 2 +-
mm/page-writeback.c | 4 +-
mm/page_alloc.c | 6 +-
mm/slab.c | 10 ++--
mm/slub.c | 4 +-
mm/vmstat.c | 6 +-
net/iucv/iucv.c | 2 +-
173 files changed, 645 insertions(+), 645 deletions(-)
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists