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kernel-fxtec-pro1x/arch/powerpc
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Anton Blanchard 6795b85c6a powerpc: tracing: Add powerpc tracepoints for timer entry and exit 
We can monitor the effectiveness of our power management of both the
kernel and hypervisor by probing the timer interrupt. For example, on
this box we see 10.37s timer interrupts on an idle core:

<idle>-0     [010]  3900.671297: timer_interrupt_entry: pt_regs=c0000000ce1e7b10
<idle>-0     [010]  3900.671302: timer_interrupt_exit: pt_regs=c0000000ce1e7b10

<idle>-0     [010]  3911.042963: timer_interrupt_entry: pt_regs=c0000000ce1e7b10
<idle>-0     [010]  3911.042968: timer_interrupt_exit: pt_regs=c0000000ce1e7b10

<idle>-0     [010]  3921.414630: timer_interrupt_entry: pt_regs=c0000000ce1e7b10
<idle>-0     [010]  3921.414635: timer_interrupt_exit: pt_regs=c0000000ce1e7b10

Since we have a 207MHz decrementer it will go negative and fire every 10.37s
even if Linux is completely idle.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2009-10-28 16:13:03 +11:00
..
boot Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 2009-09-23 15:37:02 -07:00
configs Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-09-15 09:51:09 -07:00
include/asm powerpc: tracing: Add powerpc tracepoints for timer entry and exit 2009-10-28 16:13:03 +11:00
kernel powerpc: tracing: Add powerpc tracepoints for timer entry and exit 2009-10-28 16:13:03 +11:00
kvm const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
lib powerpc: Add configurable -Werror for arch/powerpc 2009-06-16 14:15:45 +10:00
math-emu
mm powerpc/8xx: Fix regression introduced by cache coherency rewrite 2009-09-24 15:56:30 +10:00
oprofile powerpc: Remove unnecessary semicolons 2009-07-08 13:50:21 +10:00
platforms const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
sysdev powerpc: Change archdata dma_data to a union 2009-09-24 15:31:43 +10:00
xmon powerpc/4xx: Fix erroneous xmon warning on PowerPC 4xx 2009-09-24 15:31:49 +10:00
Kconfig powerpc: Increase NODES_SHIFT on 64bit from 4 to 8 2009-09-24 15:31:46 +10:00
Kconfig.debug powerpc: Add configurable -Werror for arch/powerpc 2009-06-16 14:15:45 +10:00
Makefile powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE 2009-09-24 15:31:40 +10:00
relocs_check.pl powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE 2009-09-24 15:31:40 +10:00