Messages in this thread | | | Date | Mon, 31 Aug 2009 10:59:08 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] tracing/filters: Defer pred allocation |
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* Li Zefan <lizf@cn.fujitsu.com> wrote:
> init_preds() allocates about 5392 bytes of memory (on x86_32) for > a TRACE_EVENT. With my config, at system boot total memory occupied > is: > > 5392 * (642 + 15) == 3459KB > > 642 == cat available_events | wc -l > 15 == number of dirs in events/ftrace > > That's quite a lot, so we'd better defer memory allocation util > it's needed, that's when filter is used. > > Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Applied, thanks!
> tracing/kprobe needs rebase after this patch..
You mean with many probes registered it has a lot of memory footprint? Instead of a rebase a merge of tracing/core into tracing/kprobes would be less intrusive.
Ingo
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