linux-kernel - [PATCH 03/18] arch: arc: Remove CONFIG

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Date:   Thu, 14 Jan 2021 17:05:16 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Robert Richter <rric@...nel.org>,
        Vineet Gupta <vgupta@...opsys.com>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Arnd Bergmann <arnd@...nel.org>, oprofile-list@...ts.sf.net,
        William Cohen <wcohen@...hat.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        anmar.oueja@...aro.org, Christoph Hellwig <hch@...radead.org>,
        linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 03/18] arch: arc: Remove CONFIG_OPROFILE support

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

Remove the old oprofile's architecture specific support.

Suggested-by: Christoph Hellwig <hch@...radead.org>
Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 arch/arc/Kconfig           |  1 -
 arch/arc/Makefile          |  2 --
 arch/arc/oprofile/Makefile | 10 ----------
 arch/arc/oprofile/common.c | 23 -----------------------
 4 files changed, 36 deletions(-)
 delete mode 100644 arch/arc/oprofile/Makefile
 delete mode 100644 arch/arc/oprofile/common.c

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index b55ca77f619b..bc8d6aecfbbd 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -37,7 +37,6 @@ config ARC
 	select HAVE_KPROBES
 	select HAVE_KRETPROBES
 	select HAVE_MOD_ARCH_SPECIFIC
-	select HAVE_OPROFILE
 	select HAVE_PERF_EVENTS
 	select HANDLE_DOMAIN_IRQ
 	select IRQ_DOMAIN
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 578bdbbb0fa7..4392c9c189c4 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -96,8 +96,6 @@ core-$(CONFIG_ARC_PLAT_TB10X)	+= arch/arc/plat-tb10x/
 core-$(CONFIG_ARC_PLAT_AXS10X)	+= arch/arc/plat-axs10x/
 core-$(CONFIG_ARC_SOC_HSDK)	+= arch/arc/plat-hsdk/
 
-drivers-$(CONFIG_OPROFILE)	+= arch/arc/oprofile/
-
 libs-y		+= arch/arc/lib/ $(LIBGCC)
 
 boot		:= arch/arc/boot
diff --git a/arch/arc/oprofile/Makefile b/arch/arc/oprofile/Makefile
deleted file mode 100644
index 698367bb41d0..000000000000
--- a/arch/arc/oprofile/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_OPROFILE) += oprofile.o
-
-DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
-		oprof.o cpu_buffer.o buffer_sync.o \
-		event_buffer.o oprofile_files.o \
-		oprofilefs.o oprofile_stats.o \
-		timer_int.o )
-
-oprofile-y	:= $(DRIVER_OBJS) common.o
diff --git a/arch/arc/oprofile/common.c b/arch/arc/oprofile/common.c
deleted file mode 100644
index 86bf5899533b..000000000000
--- a/arch/arc/oprofile/common.c
+++ /dev/null
@@ -1,23 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
- *
- * Based on orig code from @author John Levon <levon@...ementarian.org>
- */
-
-#include <linux/oprofile.h>
-#include <linux/perf_event.h>
-
-int __init oprofile_arch_init(struct oprofile_operations *ops)
-{
-	/*
-	 * A failure here, forces oprofile core to switch to Timer based PC
-	 * sampling, which will happen if say perf is not enabled/available
-	 */
-	return oprofile_perf_init(ops);
-}
-
-void oprofile_arch_exit(void)
-{
-	oprofile_perf_exit();
-}
-- 
2.25.0.rc1.19.g042ed3e048af