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| author | Kajol Jain <kjain@linux.ibm.com> | 2021-12-06 14:47:46 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-12-16 21:31:44 +1100 |
| commit | cb1c4aba055f928ffae0c868e8dfe08eeab302e7 (patch) | |
| tree | 7c0af7590f0518a6d34519b2b40caf02706719fa | |
| parent | 708da3ff1d67392500bdb8789d5635cd98f9ea92 (diff) | |
| download | linux-stable-cb1c4aba055f928ffae0c868e8dfe08eeab302e7.tar.gz linux-stable-cb1c4aba055f928ffae0c868e8dfe08eeab302e7.tar.bz2 linux-stable-cb1c4aba055f928ffae0c868e8dfe08eeab302e7.zip | |
perf: Add new macros for mem_hops field
Add new macros for mem_hops field which can be used to
represent remote-node, socket and board level details.
Currently the code had macro for HOPS_0, which corresponds
to data coming from another core but same node.
Add new macros for HOPS_1 to HOPS_3 to represent
remote-node, socket and board level data.
For ex: Encodings for mem_hops fields with L2 cache:
L2 - local L2
L2 | REMOTE | HOPS_0 - remote core, same node L2
L2 | REMOTE | HOPS_1 - remote node, same socket L2
L2 | REMOTE | HOPS_2 - remote socket, same board L2
L2 | REMOTE | HOPS_3 - remote board L2
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211206091749.87585-2-kjain@linux.ibm.com
| -rw-r--r-- | include/uapi/linux/perf_event.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index bd8860eeb291..1b65042ab1db 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -1332,7 +1332,10 @@ union perf_mem_data_src { /* hop level */ #define PERF_MEM_HOPS_0 0x01 /* remote core, same node */ -/* 2-7 available */ +#define PERF_MEM_HOPS_1 0x02 /* remote node, same socket */ +#define PERF_MEM_HOPS_2 0x03 /* remote socket, same board */ +#define PERF_MEM_HOPS_3 0x04 /* remote board */ +/* 5-7 available */ #define PERF_MEM_HOPS_SHIFT 43 #define PERF_MEM_S(a, s) \ |