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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


  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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