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

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 >

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

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