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
..
cpufreq	MIPS: Loongson 2F: Add CPU frequency scaling support	2009-12-17 01:57:20 +00:00
.gitignore
8250-platform.c
asm-offsets.c	MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.	2010-02-27 12:53:03 +01:00
binfmt_elfn32.c
binfmt_elfo32.c
branch.c
cevt-bcm1480.c	MIPS: Add IRQF_TIMER flag for timer interrupts	2009-11-02 12:00:02 +01:00
cevt-ds1287.c	MIPS: Add IRQF_TIMER flag for timer interrupts	2009-11-02 12:00:02 +01:00
cevt-gt641xx.c	MIPS: GT641xx: Convert timer lock to raw spinlock.	2010-02-27 12:53:37 +01:00
cevt-r4k.c	MIPS: PowerTV: Fix support for timer interrupts with > 64 external IRQs	2010-01-28 00:03:31 +01:00
cevt-sb1250.c	MIPS: Add IRQF_TIMER flag for timer interrupts	2009-11-02 12:00:02 +01:00
cevt-smtc.c	MIPS: SMTC: Fix lockup in smtc_distribute_timer	2009-11-13 18:10:38 +01:00
cevt-txx9.c	MIPS: Add IRQF_TIMER flag for timer interrupts	2009-11-02 12:00:02 +01:00
cpu-bugs64.c
cpu-probe.c	MIPS: Give Octeon+ CPUs their own cputype.	2010-02-27 12:53:26 +01:00
csrc-bcm1480.c
csrc-ioasic.c
csrc-powertv.c	MIPS: PowerTV: Base files for Cisco PowerTV platform	2009-12-17 01:57:17 +00:00
csrc-r4k.c
csrc-sb1250.c
early_printk.c
entry.S
ftrace.c	MIPS: Loongson: Change the Email address of Wu Zhangjin	2010-02-27 12:53:12 +01:00
genex.S
gpio_txx9.c
head.S	MIPS: Avoid potential hazard on Context register	2009-11-02 12:00:07 +01:00
i8253.c	MIPS: Add IRQF_TIMER flag for timer interrupts	2009-11-02 12:00:02 +01:00
i8259.c	MIPS: i8259: Convert IRQ controller lock to raw spinlock.	2010-02-27 12:53:38 +01:00
init_task.c
irq_cpu.c
irq_txx9.c
irq-gic.c	MIPS: GIC: Random fixes and enhancements.	2009-11-02 12:00:06 +01:00
irq-gt641xx.c	MIPS: GT641xx: Convert IRQ controller lock to raw spinlock.	2010-02-27 12:53:31 +01:00
irq-msc01.c
irq-rm7000.c
irq-rm9000.c
irq.c	MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS	2009-12-17 01:57:24 +00:00
kgdb.c
kspd.c	vfs: Implement proper O_SYNC semantics	2009-12-10 15:02:50 +01:00
linux32.c	MIPS: Don't include <linux/smp_lock.h> unnecessarily.	2010-02-27 12:52:57 +01:00
machine_kexec.c
Makefile	MIPS: Crazy spinlock speed test.	2010-02-27 12:53:42 +01:00
mcount.S	MIPS: Loongson: Change the Email address of Wu Zhangjin	2010-02-27 12:53:12 +01:00
mips_ksyms.c	MIPS: Tracing: Add static function tracer support for MIPS	2009-12-17 01:57:21 +00:00
mips-mt-fpaff.c
mips-mt.c
module.c
octeon_switch.S	MIPS: Nuke trailing blank lines	2010-02-27 12:53:14 +01:00
proc.c
process.c
ptrace32.c
ptrace.c
r4k_fpu.S
r4k_switch.S
r2300_fpu.S
r2300_switch.S
r6000_fpu.S
relocate_kernel.S
reset.c
rtlx.c	MIPS: Don't include <linux/smp_lock.h> unnecessarily.	2010-02-27 12:52:57 +01:00
scall32-o32.S	net: Introduce recvmmsg socket syscall	2009-10-12 23:40:10 -07:00
scall64-64.S	net: Introduce recvmmsg socket syscall	2009-10-12 23:40:10 -07:00
scall64-n32.S	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2009-12-08 07:55:01 -08:00
scall64-o32.S	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2009-12-08 07:55:01 -08:00
setup.c	MIPS: Fix and enhance built-in kernel command line	2009-12-17 01:57:35 +00:00
signal32.c	MIPS: Cleanup signal code initialization	2009-12-17 01:57:32 +00:00
signal_n32.c
signal-common.h
signal.c	MIPS: Cleanup signal code initialization	2009-12-17 01:57:32 +00:00
smp-cmp.c
smp-mt.c
smp-up.c
smp.c	MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS	2009-12-17 01:57:24 +00:00
smtc-asm.S
smtc-proc.c
smtc.c	MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS	2009-12-17 01:57:24 +00:00
spinlock_test.c	MIPS: Crazy spinlock speed test.	2010-02-27 12:53:42 +01:00
spram.c	MIPS: SPRAM: Clean up support code a little	2009-11-02 12:00:05 +01:00
stacktrace.c
sync-r4k.c
syscall.c	fix broken aliasing checks for MAP_FIXED on sparc32, mips, arm and sh	2009-12-11 06:44:59 -05:00
time.c	mips: Use generic mult/shift factor calculation for clocks	2009-11-13 20:46:24 +01:00
topology.c
traps.c	MIPS: Deal with larger physical offsets	2010-02-27 12:53:19 +01:00
unaligned.c	MIPS: Modularize COP2 handling	2009-12-17 01:57:30 +00:00
vmlinux.lds.S	MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS	2009-12-17 01:57:24 +00:00
vpe.c	MIPS: Don't include <linux/smp_lock.h> unnecessarily.	2010-02-27 12:52:57 +01:00
watch.c