lkml.org 
[lkml]   [2022]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 4/4] perf test arm64: Add attr tests for new VG register
Date
Ensure that the availability of the VG register behaves as expected
depending on the kernel version and SVE support.

Signed-off-by: James Clark <james.clark@arm.com>
---
.../attr/test-record-user-regs-no-sve-aarch64 | 9 +++++++++
.../attr/test-record-user-regs-old-sve-aarch64 | 10 ++++++++++
.../tests/attr/test-record-user-regs-sve-aarch64 | 14 ++++++++++++++
3 files changed, 33 insertions(+)
create mode 100644 tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64
create mode 100644 tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64
create mode 100644 tools/perf/tests/attr/test-record-user-regs-sve-aarch64

diff --git a/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64
new file mode 100644
index 000000000000..fbb065842880
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64
@@ -0,0 +1,9 @@
+# Test that asking for VG fails if the system doesn't support SVE. This
+# applies both before and after the feature was added in 6.1
+[config]
+command = record
+args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1
+ret = 129
+test_ret = true
+arch = aarch64
+auxv = auxv["AT_HWCAP"] & 0x200000 == 0
diff --git a/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64
new file mode 100644
index 000000000000..15ebfc3418e3
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64
@@ -0,0 +1,10 @@
+# Test that asking for VG always fails on old kernels because it was
+# added in 6.1. This applies to systems that either support or don't
+# support SVE.
+[config]
+command = record
+args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1
+ret = 129
+test_ret = true
+arch = aarch64
+kernel_until = 6.1
diff --git a/tools/perf/tests/attr/test-record-user-regs-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-sve-aarch64
new file mode 100644
index 000000000000..c598c803221d
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-user-regs-sve-aarch64
@@ -0,0 +1,14 @@
+# Test that asking for VG works if the system has SVE and after the
+# feature was added in 6.1
+[config]
+command = record
+args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1
+ret = 1
+test_ret = true
+arch = aarch64
+auxv = auxv["AT_HWCAP"] & 0x200000 == 0x200000
+kernel_since = 6.1
+
+[event:base-record]
+sample_type=4359
+sample_regs_user=70368744177664
--
2.28.0
\
 
 \ /
  Last update: 2022-09-27 17:46    [W:0.040 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site