linux/arch
Thomas Gleixner 985a34bd75 x86: remove quicklists
quicklists cause a serious memory leak on 32-bit x86,
as documented at:

  http://bugzilla.kernel.org/show_bug.cgi?id=9991

the reason is that the quicklist pool is a special-purpose
cache that grows out of proportion. It is not accounted for
anywhere and users have no way to even realize that it's
the quicklists that are causing RAM usage spikes. It was
supposed to be a relatively small pool, but as demonstrated
by KOSAKI Motohiro, they can grow as large as:

  Quicklists:    1194304 kB

given how much trouble this code has caused historically,
and given that Andrew objected to its introduction on x86
(years ago), the best option at this point is to remove them.

[ any performance benefits of caching constructed pgds should
  be implemented in a more generic way (possibly within the page
  allocator), while still allowing constructed pages to be
  allocated by other workloads. ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-11 17:11:55 +01:00
..
alpha alpha: fix iommu-related boot panic 2008-03-09 10:05:15 -07:00
arm Kprobes: indicate kretprobe support in Kconfig 2008-03-04 16:35:11 -08:00
avr32 avr32: Fix OCD refcounting bug 2008-02-27 14:23:53 +01:00
blackfin [Blackfin] arch: fix atomic and32/xor32 comments and ENDPROC markings 2008-03-03 17:44:14 -07:00
cris cris: correct usage of __user for copy to and from user space in lib/usercopy and uaccess.h 2008-03-04 16:35:16 -08:00
frv FRV: Change the timerfd syscalls to be the same as i386 2008-02-20 19:58:16 -08:00
h8300 h8300: defconfig update 2008-02-23 17:12:16 -08:00
ia64 [IA64] kprobes arch consolidation build fix 2008-03-06 09:49:01 -08:00
m32r ide: introduce HAVE_IDE 2008-02-09 10:46:40 +01:00
m68k m68k{,nommu}: Wire up new timerfd syscalls 2008-03-04 08:04:11 -08:00
m68knommu m68k{,nommu}: Wire up new timerfd syscalls 2008-03-04 08:04:11 -08:00
mips [MIPS] BCM47XX: Use new SSB SPROM data structure 2008-02-19 17:01:34 +00:00
mn10300 MN10300: define HZ as a config option 2008-02-23 17:12:13 -08:00
parisc Introduce path_put() 2008-02-14 21:13:33 -08:00
powerpc Kprobes: indicate kretprobe support in Kconfig 2008-03-04 16:35:11 -08:00
ppc [POWERPC] PPC440EP Interrupt Triggering and Level Settings 2008-02-15 21:33:02 -06:00
s390 [S390] incorrect reipl nss name. 2008-03-05 12:37:20 +01:00
sh sh: Fix up the sh64 build. 2008-03-06 17:23:15 +09:00
sparc [SPARC]: Fix link errors with gcc-4.3 2008-03-03 15:01:05 -08:00
sparc64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-03-04 20:20:32 -08:00
um sched: add declaration of sched_tail to sched.h 2008-02-25 16:34:17 +01:00
v850 ide: introduce HAVE_IDE 2008-02-09 10:46:40 +01:00
x86 x86: remove quicklists 2008-03-11 17:11:55 +01:00
xtensa [XTENSA] Allow debugger to modify the WINDOWBASE register. 2008-02-13 17:45:36 -08:00
.gitignore arch: Ignore arch/i386 and arch/x86_64 2008-01-19 21:29:39 -08:00
Kconfig Kprobes: indicate kretprobe support in Kconfig 2008-03-04 16:35:11 -08:00