linux-kernel - [PATCH 20/20] perf tools/tests: Add vector registers PEBS sampling test

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Message-Id: <20250123140721.2496639-21-dapeng1.mi@linux.intel.com>
Date: Thu, 23 Jan 2025 14:07:21 +0000
From: Dapeng Mi <dapeng1.mi@...ux.intel.com>
To: Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Eranian Stephane <eranian@...gle.com>
Cc: linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Dapeng Mi <dapeng1.mi@...el.com>,
	Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: [PATCH 20/20] perf tools/tests: Add vector registers PEBS sampling test

Current adaptive PEBS supports to capture some vector registers like XMM
register, and arch-PEBS supports to capture wider vector registers like
YMM and ZMM registers. This patch adds a perf test case to verify these
vector registers can be captured correctly.

Suggested-by: Kan Liang <kan.liang@...ux.intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
---
 tools/perf/tests/shell/record.sh | 55 ++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 0fc7a909ae9b..521eaa1972f9 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -116,6 +116,60 @@ test_register_capture() {
   echo "Register capture test [Success]"
 }
 
+test_vec_register_capture() {
+  echo "Vector register capture test"
+  if ! perf record -o /dev/null --quiet -e instructions:p true 2> /dev/null
+  then
+    echo "Vector register capture test [Skipped missing event]"
+    return
+  fi
+  if ! perf record --intr-regs=\? 2>&1 | grep -q 'XMM0'
+  then
+    echo "Vector register capture test [Skipped missing XMM registers]"
+    return
+  fi
+  if ! perf record -o - --intr-regs=xmm0 -e instructions:p \
+    -c 100000 ${testprog} 2> /dev/null \
+    | perf script -F ip,sym,iregs -i - 2> /dev/null \
+    | grep -q "XMM0:"
+  then
+    echo "Vector register capture test [Failed missing XMM output]"
+    err=1
+    return
+  fi
+  echo "Vector registe (XMM) capture test [Success]"
+  if ! perf record --intr-regs=\? 2>&1 | grep -q 'YMMH0'
+  then
+    echo "Vector register capture test [Skipped missing YMM registers]"
+    return
+  fi
+  if ! perf record -o - --intr-regs=ymmh0 -e instructions:p \
+    -c 100000 ${testprog} 2> /dev/null \
+    | perf script -F ip,sym,iregs -i - 2> /dev/null \
+    | grep -q "YMMH0:"
+  then
+    echo "Vector register capture test [Failed missing YMMH output]"
+    err=1
+    return
+  fi
+  echo "Vector registe (YMM) capture test [Success]"
+  if ! perf record --intr-regs=\? 2>&1 | grep -q 'ZMMH0'
+  then
+    echo "Vector register capture test [Skipped missing ZMM registers]"
+    return
+  fi
+  if ! perf record -o - --intr-regs=zmmh0 -e instructions:p \
+    -c 100000 ${testprog} 2> /dev/null \
+    | perf script -F ip,sym,iregs -i - 2> /dev/null \
+    | grep -q "ZMMH0:"
+  then
+    echo "Vector register capture test [Failed missing ZMMH output]"
+    err=1
+    return
+  fi
+  echo "Vector registe (ZMM) capture test [Success]"
+}
+
 test_system_wide() {
   echo "Basic --system-wide mode test"
   if ! perf record -aB --synth=no -o "${perfdata}" ${testprog} 2> /dev/null
@@ -303,6 +357,7 @@ fi
 
 test_per_thread
 test_register_capture
+test_vec_register_capture
 test_system_wide
 test_workload
 test_branch_counter
-- 
2.40.1