From: Ravi Bangoria <ravi.bangoria@amd.com>
Date: Fri, 8 May 2026 06:00:02 +0000 (+0000)
Subject: perf amd ibs: Decode Remote-Socket flag in IBS OP raw dump
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=7c04195ccefcfc95d46abfd30a435679a28493b2;p=thirdparty%2Flinux.git

perf amd ibs: Decode Remote-Socket flag in IBS OP raw dump

IBS OP on Zen6 and future platform can mark a data source as coming from
a remote socket. When the PMU advertises this feature, interpret
IBS_OP_DATA2[9] bit as the Remote-Socket indicator and show it in the
raw dump output.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Manali Shukla <manali.shukla@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/util/amd-sample-raw.c b/tools/perf/util/amd-sample-raw.c
index ae005eb0363de..3e5530008b14b 100644
--- a/tools/perf/util/amd-sample-raw.c
+++ b/tools/perf/util/amd-sample-raw.c
@@ -21,6 +21,7 @@ static u32 cpu_family, cpu_model, ibs_fetch_type, ibs_op_type;
 static bool zen4_ibs_extensions;
 static bool ldlat_cap;
 static bool dtlb_pgsize_cap;
+static bool rmtsocket_cap;
 
 /*
  * Status fields of IBS_FETCH_CTL and IBS_FETCH_CTL_EXT are valid only if
@@ -164,8 +165,13 @@ static void pr_ibs_op_data2_extended(union ibs_op_data2 reg)
 		/* 13 to 31 are reserved. Avoid printing them. */
 	};
 	int data_src = (reg.data_src_hi << 3) | reg.data_src_lo;
+	char rmtsocket[sizeof("RmtSocket _ ")] = "";
 
-	printf("ibs_op_data2:\t%016llx %sRmtNode %d%s\n", reg.val,
+	if (rmtsocket_cap)
+		snprintf(rmtsocket, sizeof(rmtsocket), "RmtSocket %d ", reg.rmt_socket);
+
+	printf("ibs_op_data2:\t%016llx %s%sRmtNode %d%s\n", reg.val,
+		rmtsocket,
 		(data_src == 1 || data_src == 2 || data_src == 5) ?
 			(reg.cache_hit_st ? "CacheHitSt 1=O-State " : "CacheHitSt 0=M-state ") : "",
 		reg.rmt_node,
@@ -184,8 +190,13 @@ static void pr_ibs_op_data2_default(union ibs_op_data2 reg)
 		" DataSrc 6=(reserved)",
 		" DataSrc 7=Other"
 	};
+	char rmtsocket[sizeof("RmtSocket _ ")] = "";
+
+	if (rmtsocket_cap)
+		snprintf(rmtsocket, sizeof(rmtsocket), "RmtSocket %d ", reg.rmt_socket);
 
-	printf("ibs_op_data2:\t%016llx %sRmtNode %d%s\n", reg.val,
+	printf("ibs_op_data2:\t%016llx %s%sRmtNode %d%s\n", reg.val,
+	       rmtsocket,
 	       reg.data_src_lo == 2 ? (reg.cache_hit_st ? "CacheHitSt 1=O-State "
 						     : "CacheHitSt 0=M-state ") : "",
 	       reg.rmt_node, data_src_str[reg.data_src_lo]);
@@ -429,6 +440,9 @@ bool evlist__has_amd_ibs(struct evlist *evlist)
 	if (perf_env__find_pmu_cap(env, "ibs_op", "dtlb_pgsize"))
 		dtlb_pgsize_cap = 1;
 
+	if (perf_env__find_pmu_cap(env, "ibs_op", "rmtsocket"))
+		rmtsocket_cap = 1;
+
 	if (ibs_fetch_type || ibs_op_type) {
 		if (!cpu_family)
 			parse_cpuid(env);