[PATCH 3/4] powerpc/perf: Add encodings to represent data based on newer composite PERF_MEM_LVLNUM* fields

[Kajol Jain]

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.

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