From 7fbddf40b881a2430daf1bd03ba80e871a2fadce Mon Sep 17 00:00:00 2001 From: Kajol Jain Date: Mon, 6 Dec 2021 14:47:47 +0530 Subject: tools headers UAPI: Add new macros for mem_hops field to perf_event.h 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. Also add corresponding strings in the mem_hops array to represent mem_hop field data in perf_mem__lvl_scnprintf function Incase mem_hops field is used, PERF_MEM_LVLNUM field also need to be set inorder to represent the data source. Hence printing data source via PERF_MEM_LVL field can be skip in that scenario. 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 Acked-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Andi Kleen Cc: Athira Jajeev Cc: Daniel Borkmann Cc: Jin Yao Cc: Jiri Olsa Cc: Kan Liang Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Michael Ellerman Cc: Nageswara R Sastry Cc: Namhyung Kim Cc: Paul Mackerras Cc: Song Liu Cc: linuxppc-dev@lists.ozlabs.org Link: http://lore.kernel.org/lkml/20211206091749.87585-3-kjain@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/uapi/linux/perf_event.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools/include/uapi') diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h index bd8860eeb291..4cd39aaccbe7 100644 --- a/tools/include/uapi/linux/perf_event.h +++ b/tools/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) \ -- cgit v1.2.3