Messages in this thread | | | Subject | Re: -rt doesn't compile for UML | From | Miklos Szeredi <> | Date | Wed, 28 Nov 2007 14:09:45 +0100 |
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> * Miklos Szeredi <miklos@szeredi.hu> wrote: > > > When writing a big file to a ubd disk, everything in uml slows down to > > a crawl, even though CPU usage is minimal. > > > > So I wanted to try the latency tracer from -rt, but it doesn't compile > > with UML: > > note that there are standalone patches as well: > > http://people.redhat.com/mingo/latency-tracing-patches/ > > so there's no forced need to use -rt.
Ah, forgotten about that.
Unfortunately the latency tracer patch doesn't compile either:
CC kernel/latency_trace.o kernel/latency_trace.c:28:21: error: asm/rtc.h: No such file or directory kernel/latency_trace.c:63:3: error: #error Implement cycles_to_usecs. kernel/latency_trace.c: In function ‘____trace’: kernel/latency_trace.c:658: error: implicit declaration of function ‘irqs_disabled_flags’ make[1]: *** [kernel/latency_trace.o] Error 1
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