linux-kernel - Re: [PATCH] perf tool: Fix type for references to data

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Message-ID: <20150407152610.GP23123@twins.programming.kicks-ass.net>
Date:	Tue, 7 Apr 2015 17:26:10 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...nel.org, linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH] perf tool: Fix type for references to data_head/tail

On Tue, Apr 07, 2015 at 09:20:37AM -0600, David Ahern wrote:
> data_head and data_tail are defined as __u64 in linux/perf_event.h,
> but perf userspace uses int and unsigned int. Convert all references
> to u64 for consistency.

Ack on that. I suspect this is because >2G mmap()s are a tad silly, but
yes its good to fix that.
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