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    SubjectRe: [PATCH 03/18] arch: arc: Remove CONFIG_OPROFILE support
    Date
    On 1/14/21 3:35 AM, Viresh Kumar wrote:
    > 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@infradead.org>
    > Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
    > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

    Acked-by: Vineet Gupta <vgupta@synopsys.com>

    I presume this doesn't need to go through ARC tree.

    -Vineet

    > ---
    > 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@movementarian.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();
    > -}

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