AuxXxilium/linux_dsm_epyc7002
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7837314d14
linux_dsm_epyc7002/arch/mips
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Ralf Baechle 7837314d14 MIPS: Get rid of branches to .subsections. 
It was a nice optimization - on paper at least.  In practice it results in
branches that may exceed the maximum legal range for a branch.  We can
fight that problem with -ffunction-sections but -ffunction-sections again
is incompatible with -pg used by the function tracer.

By rewriting the loop around all simple LL/SC blocks to C we reduce the
amount of inline assembler and at the same time allow GCC to often fill
the branch delay slots with something sensible or whatever else clever
optimization it may have up in its sleeve.

With this optimization gone we also no longer need -ffunction-sections,
so drop it.

This optimization was originally introduced in 2.6.21, commit
5999eca25c1fd4b9b9aca7833b04d10fe4bc877d (linux-mips.org) rsp.
f65e4fa8e0 (kernel.org).

Original fix for the issues which caused me to pull this optimization by
Paul Gortmaker <paul.gortmaker@windriver.com>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-10-29 19:08:24 +01:00
..
alchemy Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-10-25 08:32:05 -07:00
ar7 MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
bcm47xx MIPS: BCM47xx: Fix nvram_getenv return value. 2010-08-05 13:26:31 +01:00
bcm63xx MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
boot Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-18 13:10:36 -07:00
cavium-octeon MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
cobalt MIPS: Move Cobalt Makefile parts to their own Platform file 2010-08-05 13:25:47 +01:00
configs defconfig reduction 2010-08-14 22:26:53 +02:00
dec Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflags 2010-10-21 14:37:27 -07:00
emma MIPS: Ritually kill stupid printk. 2010-08-05 13:26:27 +01:00
fw MIPS: IP22: Remove an unused function 2009-12-17 01:56:56 +00:00
include/asm MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00
jazz MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
jz4740 MIPS: jz4740: Fix Kbuild Platform file. 2010-10-19 18:32:39 +01:00
kernel ptrace: cleanup arch_ptrace() on MIPS 2010-10-27 18:03:11 -07:00
lasat MIPS: Lasat: Migrate to new platform makefile style. 2010-08-05 13:25:53 +01:00
lib MIPS: libgcc.h: Checkpatch cleanup 2010-04-12 17:26:15 +01:00
loongson MIPS: Loongson: Remove unused macro LOONGSON_PERFCNT_IRQ 2010-08-05 13:26:26 +01:00
math-emu Update broken web addresses in arch directory. 2010-10-18 11:03:21 +02:00
mipssim MIPS: MIPSsim: Migrate to new Platform file 2010-08-05 13:25:45 +01:00
mm mm: fix race in kunmap_atomic() 2010-10-27 18:03:05 -07:00
mti-malta MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
nxp/pnx8550/common MIPS: PNX8550: Move code one directory level up. 2010-08-05 13:25:56 +01:00
oprofile MIPS: Oprofile: Fixup of loongson2_exit() 2010-07-05 17:17:31 +01:00
pci Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
pmc-sierra MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
pnx833x MIPS: Fix gen_nand probe structures contents 2010-08-12 12:22:49 +01:00
pnx8550 MIPS: PNX8550: Sort out machine halt, restart and powerdown functions. 2010-10-04 18:33:57 +01:00
power MIPS: Loongson: Change the Email address of Wu Zhangjin 2010-02-27 12:53:12 +01:00
powertv MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
rb532 MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
sgi-ip22 MIPS: IP22, IP28: Migrate to new platform makefile style. 2010-08-05 13:25:49 +01:00
sgi-ip27 MIPS: IP27: Migrate to new Platform file 2010-08-05 13:25:47 +01:00
sgi-ip32 MIPS: IP32: Migrate to new platform makefile style. 2010-08-05 13:25:50 +01:00
sibyte Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
sni MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
txx9 MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
vr41xx MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
wrppmc MIPS: WRPPMC: Migrate to new platform makefile style. 2010-08-05 13:25:51 +01:00
Kbuild MIPS: Repair Kbuild make clean breakage. 2010-10-19 18:32:39 +01:00
Kbuild.platforms MIPS: JZ4740: Add Kbuild files 2010-08-05 13:26:17 +01:00
Kconfig Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2010-10-28 16:16:39 -07:00
Kconfig.debug MIPS: Crazy spinlock speed test. 2010-02-27 12:53:42 +01:00
Makefile MIPS: Get rid of branches to .subsections. 2010-10-29 19:08:24 +01:00