Re: [PATCH v2 net-next 03/10] perf: split perf_trace_buf_prepare into alloc and update parts

[Peter Zijlstra]

On Wed, Apr 06, 2016 at 06:43:24PM -0700, Alexei Starovoitov wrote:
> split allows to move expensive update of 'struct trace_entry' to later phase.
> Repurpose unused 1st argument of perf_tp_event() to indicate event type.
> 
> While splitting use temp variable 'rctx' instead of '*rctx' to avoid
> unnecessary loads done by the compiler due to -fno-strict-aliasing
> 
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>

Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>