Em Mon, Dec 06, 2021 at 02:47:48PM +0530, Kajol Jain escreveu:
> The code represent data coming from L1/L2/L3 cache hits based on
> PERF_MEM_LVL_* namespace, which is in the process of deprecation in
> the favour of newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_}
> fields.
Thanks, applied.
- Arnaldo
> Add data source encodings to represent L1/L2/L3 cache hits based on
> newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_,HOPS_} fields for
> power10 and older platforms
>
> Result in power9 system without patch changes:
>
> localhost:# ./perf mem report --sort="mem,sym,dso" --stdio
> # Overhead Samples Memory access Symbol
> Shared Object
> # ........ ............ ........................
> ................................. ................
> #
> 29.51% 1 L2 hit [k] perf_event_exec
> [kernel.vmlinux]
> 27.05% 1 L1 hit [k] perf_ctx_unlock
> [kernel.vmlinux]
> 13.93% 1 L1 hit [k] vtime_delta
> [kernel.vmlinux]
> 13.11% 1 L1 hit [k] prepend_path.isra.11
> [kernel.vmlinux]
> 8.20% 1 L1 hit [.]
> 00000038.plt_call.__GI_strlen libc-2.28.so
> 8.20% 1 L1 hit [k] perf_event_interrupt
> [kernel.vmlinux]
>
> Result in power9 system with patch changes:
>
> localhost:# ./perf mem report --sort="mem,sym,dso" --stdio
> # Overhead Samples Memory access Symbol
> Shared Object
> # ........ ............ ........................
> .......................... ................
> #
> 36.63% 1 L2 or L2 hit [k] perf_event_exec
> [kernel.vmlinux]
> 25.50% 1 L1 or L1 hit [k] vtime_delta
> [kernel.vmlinux]
> 13.12% 1 L1 or L1 hit [k] unmap_region
> [kernel.vmlinux]
> 12.62% 1 L1 or L1 hit [k]
> perf_sample_event_took [kernel.vmlinux]
> 6.93% 1 L1 or L1 hit [k] perf_ctx_unlock
> [kernel.vmlinux]
> 5.20% 1 L1 or L1 hit [.] __memcpy_power7
> libc-2.28.so
>
> Reviewed-by: Madhavan Srinivasan <ma...@linux.ibm.com>
> Signed-off-by: Kajol Jain <kj...@linux.ibm.com>
> ---
> arch/powerpc/perf/isa207-common.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/powerpc/perf/isa207-common.c
> b/arch/powerpc/perf/isa207-common.c
> index 7ea873ab2e6f..6c6bc8b7d887 100644
> --- a/arch/powerpc/perf/isa207-common.c
> +++ b/arch/powerpc/perf/isa207-common.c
> @@ -220,13 +220,13 @@ static inline u64 isa207_find_source(u64 idx, u32
> sub_idx)
> /* Nothing to do */
> break;
> case 1:
> - ret = PH(LVL, L1);
> + ret = PH(LVL, L1) | LEVEL(L1) | P(SNOOP, HIT);
> break;
> case 2:
> - ret = PH(LVL, L2);
> + ret = PH(LVL, L2) | LEVEL(L2) | P(SNOOP, HIT);
> break;
> case 3:
> - ret = PH(LVL, L3);
> + ret = PH(LVL, L3) | LEVEL(L3) | P(SNOOP, HIT);
> break;
> case 4:
> if (sub_idx <= 1)
> --
> 2.27.0
--
- Arnaldo
