David Daney bba9076058 MIPS: Crazy spinlock speed test. ... This is just a test program for raw_spinlocks. The main reason I wrote it is to validate my spinlock changes that I sent in a previous patch. To use it enable CONFIG_DEBUG_FS and CONFIG_SPINLOCK_TEST then at run time do: # mount -t debugfs none /sys/kernel/debug/ # cat /sys/kernel/debug/mips/spin_single # cat /sys/kernel/debug/mips/spin_multi On my 600MHz octeon cn5860 (16 CPUs) I get spin_single spin_multi base 106885 247941 spinlock_patch 75194 219465 This shows that for uncontended locks the spinlock patch gives 41% improvement and for contended locks 12% improvement (1/time). Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/969/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2010-02-27 12:53:42 +01:00
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alchemy	MIPS: Alchemy: devboard PM needs to save CPLD registers.	2010-02-27 12:53:41 +01:00
ar7	MIPS: AR7: Make ar7_register_devices much more durable	2010-02-27 12:53:22 +01:00
bcm47xx	MIPS: Nuke trailing blank lines	2010-02-27 12:53:14 +01:00
bcm63xx	MIPS: BCM63xx: Convert timer locks to raw spinlocks.	2010-02-27 12:53:35 +01:00
boot	MIPS: Make the debugging of compressed kernel configurable	2010-02-27 12:53:24 +01:00
cavium-octeon	MIPS: Octeon: Replace spinlock with raw_spinlocks in dma-octeon.c.	2010-02-27 12:53:40 +01:00
cobalt	MIPS: Cobalt use strlcat() for the command line arguments	2010-01-12 18:19:34 +01:00
configs	MIPS: Loongson: Lemote-2F: update defconfig	2010-02-27 12:53:12 +01:00
dec	MIPS: DEC: Convert KN01 lock to raw spinlock.	2010-02-27 12:53:36 +01:00
emma	MIPS: Remove useless zero initializations.	2009-09-17 20:07:51 +02:00
fw	MIPS: IP22: Remove an unused function	2009-12-17 01:56:56 +00:00
gt64120/wrppmc	Update Yoichi Yuasa's e-mail address	2009-07-03 15:45:29 +01:00
include/asm	MIPS: Optimize spinlocks.	2010-02-27 12:53:42 +01:00
jazz	MIPS: Jazz: Convert irq controller lock to raw spinlock.	2010-02-27 12:53:31 +01:00
kernel	MIPS: Crazy spinlock speed test.	2010-02-27 12:53:42 +01:00
lasat	MIPS: Nuke trailing blank lines	2010-02-27 12:53:14 +01:00
lib
loongson	MIPS: Lemote 2F: Move printks out of port_access_lock.	2010-02-27 12:53:41 +01:00
math-emu	MIPS: Nuke trailing blank lines	2010-02-27 12:53:14 +01:00
mipssim	MIPS: Malta, PowerTV: Remove unnecessary "Linux started"	2010-01-12 18:19:36 +01:00
mm	MIPS: Give Octeon+ CPUs their own cputype.	2010-02-27 12:53:26 +01:00
mti-malta	MIPS: Malta: Convert IRQ controller lock to raw spinlock.	2010-02-27 12:53:32 +01:00
nxp	MIPS: PNX833x: Convert IRQ controller locks to raw spinlocks.	2010-02-27 12:53:41 +01:00
oprofile	MIPS: Loongson: Remove pointless sample_lock from oprofile code.	2010-02-27 12:53:39 +01:00
pci	MIPS: Make various locks static.	2010-02-27 12:53:30 +01:00
pmc-sierra	MIPS: Yosemite: Convert SMP startup lock to arch spinlock.	2010-02-27 12:53:37 +01:00
power	MIPS: Loongson: Change the Email address of Wu Zhangjin	2010-02-27 12:53:12 +01:00
powertv	MIPS: PowerTV: Eliminate duplicate opcode definition macros	2010-02-27 12:53:41 +01:00
rb532	MIPS: Replace all usages of CL_SIZE by COMMAND_LINE_SIZE	2009-12-17 01:56:56 +00:00
sgi-ip22	MIPS: Move several variables from .bss to .init.data	2009-12-17 01:57:27 +00:00
sgi-ip27	MIPS: IP27: Convert nmi_lock lock to arch spinlock;	2010-02-27 12:53:38 +01:00
sgi-ip32	MIPS: Cleanup switches with cases that can be merged	2010-02-27 12:53:14 +01:00
sibyte	MIPS: SB1480: Convert IRQ controller lock to raw spinlock.	2010-02-27 12:53:32 +01:00
sni	MIPS: SNI: Convert sni_rm200_i8259A_lock to raw spinlock.	2010-02-27 12:53:39 +01:00
txx9	MIPS: TXx9: Remove forced serial console setting	2010-02-27 12:53:22 +01:00
vr41xx	MIPS: VR41xx: Use strlcat() for the command line arguments	2010-01-12 18:19:30 +01:00
Kconfig	MIPS: Support 36-bit iomem on 32-bit Au1x00	2010-02-27 12:53:17 +01:00
Kconfig.debug	MIPS: Crazy spinlock speed test.	2010-02-27 12:53:42 +01:00
Makefile	MIPS: Loongson: arch/mips/Makefile: Add missing whitespace	2010-02-27 12:53:11 +01:00