| Date | Sat, 5 Jan 2013 19:38:16 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCH v4 07/18] perf: add generic memory sampling interface |
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On Thu, Dec 20, 2012 at 04:41:37PM +0100, Stephane Eranian wrote: > This patch adds PERF_SAMPLE_COST and PERF_SAMPLE_DSRC.
I guess PERF_SAMPLE_COST was replaced by PERF_SAMPLE_WEIGHT added by Andi
jirka
> The first collects a cost associated with the sampled > event. In case of memory access, the cost would be > the latency of the load, otherwise it defaults to > the sampling period. > > PERF_SAMPLE_DSRC collects the data source, i.e., where > did the data associated with the sampled instruction > come from. Information is stored in a perf_mem_dsrc > structure. It contains opcode, mem level, tlb, snoop, > lock information, subject to availability in hardware. > > Signed-off-by: Stephane Eranian <eranian@google.com>
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