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From: Ian Rogers <irogers@google.com>
To: "Peter Zijlstra" <peterz@infradead.org>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Arnaldo Carvalho de Melo" <acme@kernel.org>,
	"Namhyung Kim" <namhyung@kernel.org>,
	"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
	"Jiri Olsa" <jolsa@kernel.org>, "Ian Rogers" <irogers@google.com>,
	"Adrian Hunter" <adrian.hunter@intel.com>,
	"John Garry" <john.g.garry@oracle.com>,
	"Will Deacon" <will@kernel.org>,
	"James Clark" <james.clark@linaro.org>,
	"Mike Leach" <mike.leach@linaro.org>,
	"Leo Yan" <leo.yan@linux.dev>,
	"Suzuki K Poulose" <suzuki.poulose@arm.com>,
	"Yicong Yang" <yangyicong@hisilicon.com>,
	"Jonathan Cameron" <jonathan.cameron@huawei.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Darren Hart" <dvhart@infradead.org>,
	"Davidlohr Bueso" <dave@stgolabs.net>,
	"André Almeida" <andrealmeid@igalia.com>,
	"Tomas Glozar" <tglozar@redhat.com>,
	"Quentin Monnet" <qmo@kernel.org>,
	"Yuzhuo Jing" <yuzhuo@google.com>,
	"Blake Jones" <blakejones@google.com>,
	"Charlie Jenkins" <charlie@rivosinc.com>,
	"Yeoreum Yun" <yeoreum.yun@arm.com>,
	"Athira Rajeev" <atrajeev@linux.ibm.com>,
	"Ravi Bangoria" <ravi.bangoria@amd.com>,
	"Collin Funk" <collin.funk1@gmail.com>,
	"Dapeng Mi" <dapeng1.mi@linux.intel.com>,
	"Thomas Richter" <tmricht@linux.ibm.com>,
	"Dmitry Vyukov" <dvyukov@google.com>,
	"Andi Kleen" <ak@linux.intel.com>,
	"Howard Chu" <howardchu95@gmail.com>,
	"Zecheng Li" <zecheng@google.com>, tanze <tanze@kylinos.cn>,
	"Gabriele Monaco" <gmonaco@redhat.com>,
	"GuoHan Zhao" <zhaoguohan@kylinos.cn>,
	"Markus Elfring" <Markus.Elfring@web.de>,
	"Colin Ian King" <colin.i.king@gmail.com>,
	"Kan Liang" <kan.liang@linux.intel.com>,
	"Dr. David Alan Gilbert" <linux@treblig.org>,
	"Jean-Philippe Romain" <jean-philippe.romain@foss.st.com>,
	"Yang Li" <yang.lee@linux.alibaba.com>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: [PATCH v1 3/5] tool build: Remove __get_cpuid feature test
Date: Sun,  9 Nov 2025 17:31:50 -0800	[thread overview]
Message-ID: <20251110013152.3099080-4-irogers@google.com> (raw)
In-Reply-To: <20251110013152.3099080-1-irogers@google.com>

This feature test is no longer used so remove.

The function tested by the feature test is used in:
tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
however, the Makefile just assumes the presence of the function and
doesn't perform a build feature test for it.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/build/Makefile.feature         | 2 --
 tools/build/feature/Makefile         | 4 ----
 tools/build/feature/test-all.c       | 5 -----
 tools/build/feature/test-get_cpuid.c | 8 --------
 4 files changed, 19 deletions(-)
 delete mode 100644 tools/build/feature/test-get_cpuid.c

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 32bbe29fe5f6..fc6abe369f73 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -90,7 +90,6 @@ FEATURE_TESTS_BASIC :=                  \
         timerfd                         \
         zlib                            \
         lzma                            \
-        get_cpuid                       \
         bpf                             \
         scandirat			\
         sched_getcpu			\
@@ -146,7 +145,6 @@ FEATURE_DISPLAY ?=              \
          llvm-perf              \
          zlib                   \
          lzma                   \
-         get_cpuid              \
          bpf			\
          libaio			\
          libzstd
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 49b0add392b1..7c90e0d0157a 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -56,7 +56,6 @@ FILES=                                          \
          test-lzma.bin                          \
          test-bpf.bin                           \
          test-libbpf.bin                        \
-         test-get_cpuid.bin                     \
          test-sdt.bin                           \
          test-cxx.bin                           \
          test-gettid.bin			\
@@ -318,9 +317,6 @@ $(OUTPUT)test-zlib.bin:
 $(OUTPUT)test-lzma.bin:
 	$(BUILD) -llzma
 
-$(OUTPUT)test-get_cpuid.bin:
-	$(BUILD)
-
 $(OUTPUT)test-bpf.bin:
 	$(BUILD)
 
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 8a354b81417c..eb346160d0ba 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -114,10 +114,6 @@
 # include "test-lzma.c"
 #undef main
 
-#define main main_test_get_cpuid
-# include "test-get_cpuid.c"
-#undef main
-
 #define main main_test_bpf
 # include "test-bpf.c"
 #undef main
@@ -168,7 +164,6 @@ int main(int argc, char *argv[])
 	main_test_pthread_attr_setaffinity_np();
 	main_test_pthread_barrier();
 	main_test_lzma();
-	main_test_get_cpuid();
 	main_test_bpf();
 	main_test_scandirat();
 	main_test_sched_getcpu();
diff --git a/tools/build/feature/test-get_cpuid.c b/tools/build/feature/test-get_cpuid.c
deleted file mode 100644
index bb4f065f28a6..000000000000
--- a/tools/build/feature/test-get_cpuid.c
+++ /dev/null
@@ -1,8 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <cpuid.h>
-
-int main(void)
-{
-	unsigned int eax = 0, ebx = 0, ecx = 0, edx = 0;
-	return __get_cpuid(0x15, &eax, &ebx, &ecx, &edx);
-}
-- 
2.51.2.1041.gc1ab5b90ca-goog


  parent reply	other threads:[~2025-11-10  1:33 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-10  1:31 [PATCH v1 0/5] Remove NO_AUXTRACE build option Ian Rogers
2025-11-10  1:31 ` [PATCH v1 1/5] perf intel-pt: Use the perf provided "cpuid.h" Ian Rogers
2025-11-10  1:31 ` [PATCH v1 2/5] perf build: Don't add NO_AUXTRACE if missing feature-get_cpuid Ian Rogers
2025-11-10  1:31 ` Ian Rogers [this message]
2025-11-10  1:31 ` [PATCH v1 4/5] perf build: Remove NO_AUXTRACE build option Ian Rogers
2025-11-10  1:31 ` [PATCH v1 5/5] perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies Ian Rogers
2025-11-11  6:21 ` [PATCH v1 0/5] Remove NO_AUXTRACE build option Namhyung Kim
2025-11-11 18:01   ` Ian Rogers
2025-11-12  9:21     ` James Clark
2025-11-14 18:35 ` Namhyung Kim

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