Re: [tip:perf/core] perf tools: Protect accesses the dso rbtrees/ lists with a rw lock

From: Ingo Molnar
Date: Tue Jun 09 2015 - 05:56:30 EST



* tip-bot for Arnaldo Carvalho de Melo <tipbot@xxxxxxxxx> wrote:

> +void dsos__add(struct dsos *dsos, struct dso *dso)
> +{
> + pthread_rwlock_wrlock(&dsos->lock);
> + __dsos__add(dsos, dso);
> + pthread_rwlock_unlock(&dsos->lock);
> }

Please introduce wrappers and use the kernel API names:
read_lock()/read_unlock()/etc. (and name the mutex primitives
mutex_lock()/unlock())

That way kernel developers will find their way around the perf locking details
easily, and we can also use liblockdep to check locking correctness.

Thanks!

Ingo
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