Messages in this thread | | | Date | Thu, 14 Jun 2018 21:39:17 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v1 4/6] perf: Allow using AUX data in perf samples |
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On Thu, Jun 14, 2018 at 09:25:13PM +0200, Peter Zijlstra wrote: > On Tue, Jun 12, 2018 at 10:51:15AM +0300, Alexander Shishkin wrote: > > @@ -882,6 +890,7 @@ struct perf_sample_data { > > */ > > u64 addr; > > struct perf_raw_record *raw; > > + struct perf_aux_record aux; > > struct perf_branch_stack *br_stack; > > u64 period; > > u64 weight; > > @@ -933,6 +942,7 @@ static inline void perf_sample_data_init(struct perf_sample_data *data, > > /* remaining struct members initialized in perf_prepare_sample() */ > > data->addr = addr; > > data->raw = NULL; > > + data->aux.from = data->aux.to = data->aux.size = 0; > > data->br_stack = NULL; > > data->period = period; > > data->weight = 0; > > You just blew that cacheline...
And since the whole aux_sample thing seems to be purely prepare/output driven, I really don't see the need why this needs to be here. AFAICT it should just work fine in the other part of this structure.
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