From: Zhang Rui <rui.zhang@intel.com>
Date: Tue, 3 Dec 2024 07:51:17 +0000 (+0800)
Subject: tools/power turbostat: Exit on unsupported Vendors
X-Git-Tag: v6.14-rc1~1^2~20
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=48c62ba1b407140229e92f5cfae6ae113fc4af8e;p=thirdparty%2Fkernel%2Flinux.git

tools/power turbostat: Exit on unsupported Vendors

Turbostat currently supports x86 processors from Intel, AMD, and Hygon.
The behavior of turbostat on CPUs from other vendors has not been
evaluated and may lead to incorrect or undefined behavior.

Enhance turbostat to exit by default when running on an unsupported CPU
vendor. This ensures that users are aware that their CPU is not
currently supported by turbostat, guiding them to seek support for their
specific hardware through future patches.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 5e894b71003c9..cb659b274554b 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1056,9 +1056,9 @@ void probe_platform_features(unsigned int family, unsigned int model)
 {
 	int i;
 
-	platform = &default_features;
 
 	if (authentic_amd || hygon_genuine) {
+		platform = &default_features;
 		if (max_extended_level >= 0x80000007) {
 			unsigned int eax, ebx, ecx, edx;
 
@@ -1071,7 +1071,7 @@ void probe_platform_features(unsigned int family, unsigned int model)
 	}
 
 	if (!genuine_intel)
-		return;
+		goto end;
 
 	for (i = 0; turbostat_pdata[i].features; i++) {
 		if (VFM_FAMILY(turbostat_pdata[i].vfm) == family && VFM_MODEL(turbostat_pdata[i].vfm) == model) {
@@ -1080,6 +1080,10 @@ void probe_platform_features(unsigned int family, unsigned int model)
 		}
 	}
 
+end:
+	if (platform)
+		return;
+
 	fprintf(stderr, "Unsupported platform detected.\n"
 		"\tSee RUN THE LATEST VERSION on turbostat(8)\n");
 	exit(1);