linux-kernel - [PATCH 1/2] tools headers: Remove unused kvm

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Message-Id: <20250910-james-tools-header-cleanup-v1-1-7ae4bedc99e0@linaro.org>
Date: Wed, 10 Sep 2025 14:30:11 +0100
From: James Clark <james.clark@...aro.org>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
 Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>, 
 Adrian Hunter <adrian.hunter@...el.com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, Leo Yan <leo.yan@....com>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, 
 James Clark <james.clark@...aro.org>
Subject: [PATCH 1/2] tools headers: Remove unused kvm_perf.h copies

These have been unused since commit 162607ea20fa ("perf kvm/{x86,s390}:
Remove dependency on uapi/kvm_perf.h") in favour of dynamic discovery.
Remove the unused headers to reduce consistency checking overhead and
noise.

Signed-off-by: James Clark <james.clark@...aro.org>
---
 tools/arch/s390/include/uapi/asm/kvm_perf.h | 22 ----------------------
 tools/arch/x86/include/uapi/asm/kvm_perf.h  | 17 -----------------
 tools/perf/check-headers.sh                 |  2 --
 3 files changed, 41 deletions(-)

diff --git a/tools/arch/s390/include/uapi/asm/kvm_perf.h b/tools/arch/s390/include/uapi/asm/kvm_perf.h
deleted file mode 100644
index 84606b8cc49e4..0000000000000
--- a/tools/arch/s390/include/uapi/asm/kvm_perf.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Definitions for perf-kvm on s390
- *
- * Copyright 2014 IBM Corp.
- * Author(s): Alexander Yarygin <yarygin@...ux.vnet.ibm.com>
- */
-
-#ifndef __LINUX_KVM_PERF_S390_H
-#define __LINUX_KVM_PERF_S390_H
-
-#include <asm/sie.h>
-
-#define DECODE_STR_LEN 40
-
-#define VCPU_ID "id"
-
-#define KVM_ENTRY_TRACE "kvm:kvm_s390_sie_enter"
-#define KVM_EXIT_TRACE "kvm:kvm_s390_sie_exit"
-#define KVM_EXIT_REASON "icptcode"
-
-#endif
diff --git a/tools/arch/x86/include/uapi/asm/kvm_perf.h b/tools/arch/x86/include/uapi/asm/kvm_perf.h
deleted file mode 100644
index 125cf5cdf6c5f..0000000000000
--- a/tools/arch/x86/include/uapi/asm/kvm_perf.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_X86_KVM_PERF_H
-#define _ASM_X86_KVM_PERF_H
-
-#include <asm/svm.h>
-#include <asm/vmx.h>
-#include <asm/kvm.h>
-
-#define DECODE_STR_LEN 20
-
-#define VCPU_ID "vcpu_id"
-
-#define KVM_ENTRY_TRACE "kvm:kvm_entry"
-#define KVM_EXIT_TRACE "kvm:kvm_exit"
-#define KVM_EXIT_REASON "exit_reason"
-
-#endif /* _ASM_X86_KVM_PERF_H */
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
index be519c433ce47..6eacc02fbb1b3 100755
--- a/tools/perf/check-headers.sh
+++ b/tools/perf/check-headers.sh
@@ -40,13 +40,11 @@ declare -a FILES=(
   "arch/s390/include/uapi/asm/perf_regs.h"
   "arch/x86/include/uapi/asm/perf_regs.h"
   "arch/x86/include/uapi/asm/kvm.h"
-  "arch/x86/include/uapi/asm/kvm_perf.h"
   "arch/x86/include/uapi/asm/svm.h"
   "arch/x86/include/uapi/asm/unistd.h"
   "arch/x86/include/uapi/asm/vmx.h"
   "arch/powerpc/include/uapi/asm/kvm.h"
   "arch/s390/include/uapi/asm/kvm.h"
-  "arch/s390/include/uapi/asm/kvm_perf.h"
   "arch/s390/include/uapi/asm/sie.h"
   "arch/arm/include/uapi/asm/kvm.h"
   "arch/arm64/include/uapi/asm/kvm.h"

-- 
2.34.1