Messages in this thread | | | Date | Thu, 24 Oct 2019 15:52:04 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 1/4] perf: Allow using AUX data in perf samples |
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On Tue, Oct 22, 2019 at 12:58:09PM +0300, Alexander Shishkin wrote:
> @@ -964,6 +979,7 @@ struct perf_sample_data { > u32 reserved; > } cpu_entry; > struct perf_callchain_entry *callchain; > + u64 aux_size; > > /* > * regs_user may point to task_pt_regs or to regs_user_copy, depending > @@ -996,6 +1012,7 @@ static inline void perf_sample_data_init(struct perf_sample_data *data, > data->weight = 0; > data->data_src.val = PERF_MEM_NA; > data->txn = 0; > + data->aux_size = 0; > } >
That is really sad; so far we've managed to only touch a single cacheline there, you just wrecked that.
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