Re: [PATCH] perf mem: Print memory operation type

Arnaldo Carvalho de Melo
2022-04-18T15:31:45Z

Em Sun, Apr 17, 2022 at 08:45:24PM +0800, Leo Yan escreveu:
> The memory operation types are not only for load and store, for easier
> reviewing the memory operation type, this patch prints out it.
>
> Before:
> ls 14753 [011] 3678.072400: 1 l1d-miss: 88000182 L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 l1d-access: 88000182 L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 tlb-access: 88000182 L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 memory: 88000182 L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
>
> After:
>
> ls 14753 [011] 3678.072400: 1 l1d-miss: 88000182 |OP LOAD|LVL L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 l1d-access: 88000182 |OP LOAD|LVL L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 tlb-access: 88000182 |OP LOAD|LVL L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])
> ls 14753 [011] 3678.072400: 1 memory: 88000182 |OP LOAD|LVL L1 miss|SNP N/A|TLB Walker hit|LCK No|BLK N/A ffffa7c22b4b2a00 [unknown] ([kernel.kallsyms])

Thanks, applied to perf/core.

- Arnaldo

> Signed-off-by: Leo Yan <leo.yan@linaro.org>
> ---
> tools/perf/util/mem-events.c | 29 ++++++++++++++++++++++++++++-
> 1 file changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
> index e5e405185498..f8f234251f92 100644
> --- a/tools/perf/util/mem-events.c
> +++ b/tools/perf/util/mem-events.c
> @@ -314,6 +314,30 @@ static const char * const mem_hops[] = {
> "board",
> };
>
> +static int perf_mem__op_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
> +{
> + u64 op = PERF_MEM_LOCK_NA;
> + int l;
> +
> + if (mem_info)
> + op = mem_info->data_src.mem_op;
> +
> + if (op & PERF_MEM_OP_NA)
> + l = scnprintf(out, sz, "N/A");
> + else if (op & PERF_MEM_OP_LOAD)
> + l = scnprintf(out, sz, "LOAD");
> + else if (op & PERF_MEM_OP_STORE)
> + l = scnprintf(out, sz, "STORE");
> + else if (op & PERF_MEM_OP_PFETCH)
> + l = scnprintf(out, sz, "PFETCH");
> + else if (op & PERF_MEM_OP_EXEC)
> + l = scnprintf(out, sz, "EXEC");
> + else
> + l = scnprintf(out, sz, "No");
> +
> + return l;
> +}
> +
> int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
> {
> size_t i, l = 0;
> @@ -466,7 +490,10 @@ int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_in
> {
> int i = 0;
>
> - i += perf_mem__lvl_scnprintf(out, sz, mem_info);
> + i += scnprintf(out, sz, "|OP ");
> + i += perf_mem__op_scnprintf(out + i, sz - i, mem_info);
> + i += scnprintf(out + i, sz - i, "|LVL ");
> + i += perf_mem__lvl_scnprintf(out + i, sz, mem_info);
> i += scnprintf(out + i, sz - i, "|SNP ");
> i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
> i += scnprintf(out + i, sz - i, "|TLB ");
> --
> 2.25.1

--

- Arnaldo