Re: [PATCH v4 07/18] perf: add generic memory sampling interface
From: Jiri Olsa
Date: Sat Jan 05 2013 - 13:42:27 EST
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
> 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@xxxxxxxxxx>
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/