Messages in this thread | | | Date | Fri, 14 Jun 2013 19:02:24 +0200 | From | Oleg Nesterov <> | Subject | Re: ftrace multibuffer && rcu (Was: tracing/uprobes: Support ftrace_event_file base multibuffer) |
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On 06/14, Steven Rostedt wrote: > > On Fri, 2013-06-14 at 18:04 +0200, Oleg Nesterov wrote: > > > > But the main problem is, synchronize_sched() is slow and it is called > > under the global event_mutex. > > But is that really an issue? event_mutex is used to add or remove > events, and this happens only when we load or unload a module, or add or > remove a probe. These are mostly user operations that take a relatively > long time to complete (but not relative to humans).
OK, please ignore then.
Oleg.
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