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Date: Fri, 3 Jul 2015 09:14:46 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Rusty Russell <rusty@...tcorp.com.au> Cc: Tejun Heo <tj@...nel.org>, Jens Axboe <axboe@...nel.dk>, Jon Christopherson <jon@...s.org>, linux-kernel@...r.kernel.org, Arnaldo Carvalho de Melo <acme@...nel.org> Subject: Re: [PATCH] tools/perf, rbtree: Add RCU wrappers to make rbtree.h usable in user-space On Fri, Jul 03, 2015 at 06:21:12AM +0930, Rusty Russell wrote: > Looks like Peter Zijlstra is the one to take this fix... acme is the steward of tools/perf/ > >> diff --git a/tools/perf/util/include/linux/rcupdate.h > >> b/tools/perf/util/include/linux/rcupdate.h > >> new file mode 100644 > >> index 0000000..51c0f45 > >> --- /dev/null > >> +++ b/tools/perf/util/include/linux/rcupdate.h > >> @@ -0,0 +1,9 @@ > >> +#ifndef PERF_LINUX_RCUPDATE_H_ > >> +#define PERF_LINUX_RCUPDATE_H_ > >> + > >> +/* Simple trivial wrappers for now, we don't use RCU in perf user-space > >> (yet): */ > >> +#define WRITE_ONCE(var, val) ((var) = (val)) It looks like perf includes linux/compiler.h so it should already have this. > >> +#define rcu_assign_pointer(ptr, val) WRITE_ONCE(ptr, val) That's plain wrong, WRITE_ONCE(*(ptr), (val)) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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