arch: xtensa: 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@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 37ce148..9ad6b7b 100644 (file)
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -32,7 +32,6 @@ config XTENSA
        select HAVE_FUTEX_CMPXCHG if !MMU
        select HAVE_HW_BREAKPOINT if PERF_EVENTS
        select HAVE_IRQ_TIME_ACCOUNTING
-       select HAVE_OPROFILE
        select HAVE_PCI
        select HAVE_PERF_EVENTS
        select HAVE_STACKPROTECTOR

diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 67a7d15..cf09407 100644 (file)
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -83,7 +83,6 @@ core-y                += $(buildvar) $(buildplf)
 core-y                 += arch/xtensa/boot/dts/
 
 libs-y         += arch/xtensa/lib/ $(LIBGCC)
-drivers-$(CONFIG_OPROFILE)     += arch/xtensa/oprofile/
 
 boot           := arch/xtensa/boot
 

diff --git a/arch/xtensa/configs/audio_kc705_defconfig b/arch/xtensa/configs/audio_kc705_defconfig
index eeb4c53..3be62da 100644 (file)
--- a/arch/xtensa/configs/audio_kc705_defconfig
+++ b/arch/xtensa/configs/audio_kc705_defconfig
@@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_XTENSA_VARIANT_CUSTOM=y

diff --git a/arch/xtensa/configs/generic_kc705_defconfig b/arch/xtensa/configs/generic_kc705_defconfig
index 412f611..e9d6b6f 100644 (file)
--- a/arch/xtensa/configs/generic_kc705_defconfig
+++ b/arch/xtensa/configs/generic_kc705_defconfig
@@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_XTENSA_VARIANT_DC233C=y

diff --git a/arch/xtensa/configs/smp_lx200_defconfig b/arch/xtensa/configs/smp_lx200_defconfig
index 4f1c799..a47c856 100644 (file)
--- a/arch/xtensa/configs/smp_lx200_defconfig
+++ b/arch/xtensa/configs/smp_lx200_defconfig
@@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
-CONFIG_OPROFILE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_XTENSA_VARIANT_CUSTOM=y

diff --git a/arch/xtensa/configs/xip_kc705_defconfig b/arch/xtensa/configs/xip_kc705_defconfig
index f9e85c0..4f1ff95 100644 (file)
--- a/arch/xtensa/configs/xip_kc705_defconfig
+++ b/arch/xtensa/configs/xip_kc705_defconfig
@@ -31,7 +31,6 @@ CONFIG_CMDLINE="earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0
 CONFIG_USE_OF=y
 CONFIG_BUILTIN_DTB_SOURCE="kc705"
 # CONFIG_PARSE_BOOTPARAM is not set
-CONFIG_OPROFILE=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y

diff --git a/arch/xtensa/kernel/stacktrace.c b/arch/xtensa/kernel/stacktrace.c
index c822abb..7f7755c 100644 (file)
--- a/arch/xtensa/kernel/stacktrace.c
+++ b/arch/xtensa/kernel/stacktrace.c
@@ -16,7 +16,7 @@
 #include <asm/traps.h>
 #include <linux/uaccess.h>
 
-#if IS_ENABLED(CONFIG_OPROFILE) || IS_ENABLED(CONFIG_PERF_EVENTS)
+#if IS_ENABLED(CONFIG_PERF_EVENTS)
 
 /* Address of common_exception_return, used to check the
  * transition from kernel to user space.

diff --git a/arch/xtensa/oprofile/Makefile b/arch/xtensa/oprofile/Makefile
deleted file mode 100644 (file)
index f559b9f..0000000
--- a/arch/xtensa/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) init.o backtrace.o

diff --git a/arch/xtensa/oprofile/backtrace.c b/arch/xtensa/oprofile/backtrace.c
deleted file mode 100644 (file)
index 8f95203..0000000
--- a/arch/xtensa/oprofile/backtrace.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * @file backtrace.c
- *
- * @remark Copyright 2008 Tensilica Inc.
- * Copyright (C) 2015 Cadence Design Systems Inc.
- * @remark Read the file COPYING
- *
- */
-
-#include <linux/oprofile.h>
-#include <asm/ptrace.h>
-#include <asm/stacktrace.h>
-
-static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
-{
-       oprofile_add_trace(frame->pc);
-       return 0;
-}
-
-void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
-{
-       if (user_mode(regs))
-               xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
-       else
-               xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
-                                       xtensa_backtrace_cb, NULL);
-}

diff --git a/arch/xtensa/oprofile/init.c b/arch/xtensa/oprofile/init.c
deleted file mode 100644 (file)
index a67eea3..0000000
--- a/arch/xtensa/oprofile/init.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @file init.c
- *
- * @remark Copyright 2008 Tensilica Inc.
- * @remark Read the file COPYING
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/oprofile.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-
-
-extern void xtensa_backtrace(struct pt_regs *const regs, unsigned int depth);
-
-int __init oprofile_arch_init(struct oprofile_operations *ops)
-{
-       ops->backtrace = xtensa_backtrace;
-       return -ENODEV;
-}
-
-
-void oprofile_arch_exit(void)
-{
-}