From: "John B. Wyatt IV" <jwyatt@redhat.com>
To: Shuah Khan <skhan@linuxfoundation.org>
Cc: "John B. Wyatt IV" <jwyatt@redhat.com>,
linux-pm@vger.kernel.org, Thomas Renninger <trenn@suse.com>,
Shuah Khan <shuah@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, John Kacur <jkacur@redhat.com>,
Tomas Glozar <tglozar@redhat.com>, Arnaldo Melo <acme@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"John B. Wyatt IV" <sageofredondo@gmail.com>
Subject: [PATCH v3 3/4] pm:cpupower: Include test_raw_pylibcpupower.py
Date: Wed, 4 Sep 2024 22:19:10 -0400 [thread overview]
Message-ID: <20240905021916.15938-4-jwyatt@redhat.com> (raw)
In-Reply-To: <20240905021916.15938-1-jwyatt@redhat.com>
This script demonstrates how to make use of, and tests, the bindings.
In the future, this script could become part of a larger test suite to
test the bindings and libcpupower.
Signed-off-by: John B. Wyatt IV <jwyatt@redhat.com>
Signed-off-by: John B. Wyatt IV <sageofredondo@gmail.com>
---
Changes in v3:
- Small puncations below fixed.
- Reordered patch series for cpupower stub implementation to be
first.
- Added pm:cpupower prefix to header and Rafael to Cc.
Changes in v2:
- None.
---
.../bindings/python/test_raw_pylibcpupower.py | 42 +++++++++++++++++++
1 file changed, 42 insertions(+)
create mode 100755 tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py
diff --git a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py
new file mode 100755
index 000000000000..3d6f62b9556a
--- /dev/null
+++ b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-only
+
+import raw_pylibcpupower as p
+
+# Simple function call
+
+"""
+Get cstate count
+"""
+cpu_cstates_count = p.cpuidle_state_count(0)
+if cpu_cstates_count > -1:
+ print(f"CPU 0 has {cpu_cstates_count} c-states")
+else:
+ print(f"cstate count error: return code: {cpu_cstates_count}")
+
+"""
+Disable cstate (will fail if the above is 0, ex: a virtual machine)
+"""
+cstate_disabled = p.cpuidle_state_disable(0, 0, 1)
+if cpu_cstates_count == 0:
+ print(f"CPU 0 has {cpu_cstates_count} c-states")
+else:
+ print(f"cstate count error: return code: {cpu_cstates_count}")
+
+match cstate_disabled:
+ case 0:
+ print(f"CPU state disabled")
+ case -1:
+ print(f"Idlestate not available")
+ case _:
+ print(f"Not documented")
+
+
+# Pointer example
+
+topo = p.cpupower_topology()
+total_cpus = p.get_cpu_topology(topo)
+if total_cpus > 0:
+ print(f"Number of total cpus: {total_cpus} and number of cores: {topo.cores}")
+else:
+ print(f"Error: could not get cpu topology")
--
2.46.0
next prev parent reply other threads:[~2024-09-05 2:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-05 2:19 [PATCH v3 0/4] Add SWIG Bindings to libcpupower John B. Wyatt IV
2024-09-05 2:19 ` [PATCH v3 1/4] pm:cpupower: Add missing powercap_set_enabled() stub function John B. Wyatt IV
2024-09-05 2:19 ` [PATCH v3 2/4] pm:cpupower: Add SWIG bindings files for libcpupower John B. Wyatt IV
2024-09-21 21:23 ` Guenter Roeck
2024-09-22 15:39 ` Linus Torvalds
2024-09-23 13:29 ` John B. Wyatt IV
2024-09-23 16:09 ` Shuah Khan
2024-09-05 2:19 ` John B. Wyatt IV [this message]
2024-09-05 2:19 ` [PATCH v3 4/4] MAINTAINERS: Add Maintainers for SWIG Python bindings John B. Wyatt IV
2024-09-06 1:03 ` [PATCH v3 0/4] Add SWIG Bindings to libcpupower Shuah Khan
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