Russell King 87067a935a ARM: Optimize multi-CPU tlb flushing a little more ... The compiler does not conditionalize the assembly instructions for the tlb operations, which leads to sub-optimal code being generated when building a kernel for multiple CPUs. We can tweak things fairly simply as the code fragment below shows: 17f8: e3120001 tst r2, #1 ; 0x1 ... 1800: 0a000000 beq 1808 <handle_pte_fault+0x194> 1804: ee061f10 mcr 15, 0, r1, cr6, cr0, {0} 1808: e3120004 tst r2, #4 ; 0x4 180c: 0a000000 beq 1814 <handle_pte_fault+0x1a0> 1810: ee081f36 mcr 15, 0, r1, cr8, cr6, {1} becomes: 17f0: e3120001 tst r2, #1 ; 0x1 17f4: 1e063f10 mcrne 15, 0, r3, cr6, cr0, {0} 17f8: e3120004 tst r2, #4 ; 0x4 17fc: 1e083f36 mcrne 15, 0, r3, cr8, cr6, {1} Overall, for Realview with V6 and V7 CPUs configured: text data bss dec hex filename 4153998 207340 5371036 9732374 948116 ../build/realview/vmlinux.before 4153366 207332 5371036 9731734 947e96 ../build/realview/vmlinux.after Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2012-03-24 09:38:52 +00:00
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alpha	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
arm	ARM: Optimize multi-CPU tlb flushing a little more	2012-03-24 09:38:52 +00:00
avr32	treewide: remove useless NORET_TYPE macro and uses	2012-01-12 20:13:03 -08:00
blackfin	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
c6x	C6X: replace tick_nohz_stop/restart_sched_tick calls	2012-01-08 15:13:16 -05:00
cris	lib: use generic pci_iomap on all architectures	2012-01-10 18:04:27 -08:00
frv	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
h8300	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
hexagon
ia64	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-01-18 15:51:48 -08:00
m32r	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
m68k	treewide: convert uses of ATTRIB_NORETURN to __noreturn	2012-01-12 20:13:03 -08:00
microblaze	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
mips	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
mn10300	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
openrisc	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2012-01-16 14:34:54 -08:00
parisc	parisc, exec: remove redundant set_fs(USER_DS)	2012-01-12 20:13:04 -08:00
powerpc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
score	cpu: Register a generic CPU device on architectures that currently do not	2012-01-11 15:50:11 -08:00
sh	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
sparc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
tile	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
um	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
unicore32	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
x86	Merge branches 'sched-urgent-for-linus', 'perf-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-19 14:53:06 -08:00
xtensa	audit: inline audit_syscall_entry to reduce burden on archs	2012-01-17 16:16:56 -05:00
.gitignore
Kconfig	mm,x86,um: move CMPXCHG_DOUBLE config option	2012-01-12 20:13:03 -08:00