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arch: sh: Remove CONFIG_OPROFILE support

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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: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Viresh Kumar 2021-01-14 17:05:26 +05:30
parent 0fa461caba
commit 482cae0a9f
20 changed files with 0 additions and 177 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/sh/Kconfig
View File

@ -51,7 +51,6 @@ config SUPERH
select HAVE_MIXED_BREAKPOINTS_REGS
select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
select HAVE_NMI
select HAVE_OPROFILE
select HAVE_PATA_PLATFORM
select HAVE_PERF_EVENTS
select HAVE_REGS_AND_STACK_ACCESS_API

1
arch/sh/Makefile
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@ -170,7 +170,6 @@ cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
cpuincdir-y += cpu-common # Must be last
drivers-y += arch/sh/drivers/
drivers-$(CONFIG_OPROFILE) += arch/sh/oprofile/
cflags-y += $(foreach d, $(cpuincdir-y), -I $(srctree)/arch/sh/include/$(d)) \
$(foreach d, $(machdir-y), -I $(srctree)/arch/sh/include/$(d))

1
arch/sh/configs/espt_defconfig
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@ -7,7 +7,6 @@ CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7763=y

1
arch/sh/configs/migor_defconfig
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@ -6,7 +6,6 @@ CONFIG_BLK_DEV_INITRD=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7722=y

1
arch/sh/configs/r7780mp_defconfig
View File

@ -7,7 +7,6 @@ CONFIG_LOG_BUF_SHIFT=14
# CONFIG_EPOLL is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=m
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set

1
arch/sh/configs/r7785rp_defconfig
View File

@ -9,7 +9,6 @@ CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y

1
arch/sh/configs/rsk7201_defconfig
View File

@ -12,7 +12,6 @@ CONFIG_BLK_DEV_INITRD=y
# CONFIG_AIO is not set
CONFIG_SLOB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7201=y

1
arch/sh/configs/rsk7203_defconfig
View File

@ -13,7 +13,6 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_KALLSYMS_ALL=y
CONFIG_SLOB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7203=y

1
arch/sh/configs/rts7751r2d1_defconfig
View File

@ -3,7 +3,6 @@ CONFIG_LOG_BUF_SHIFT=14
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7751R=y

1
arch/sh/configs/rts7751r2dplus_defconfig
View File

@ -3,7 +3,6 @@ CONFIG_LOG_BUF_SHIFT=14
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7751R=y

1
arch/sh/configs/sdk7786_defconfig
View File

@ -35,7 +35,6 @@ CONFIG_RD_LZO=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=m
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y

1
arch/sh/configs/se7206_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_KALLSYMS_ALL=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLOB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set

1
arch/sh/configs/sh03_defconfig
View File

@ -5,7 +5,6 @@ CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=m
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y

1
arch/sh/configs/sh7724_generic_defconfig
View File

@ -4,7 +4,6 @@ CONFIG_CGROUPS=y
# CONFIG_UID16 is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7724=y
CONFIG_NO_HZ=y

1
arch/sh/configs/sh7763rdp_defconfig
View File

@ -7,7 +7,6 @@ CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7763=y

1
arch/sh/configs/sh7770_generic_defconfig
View File

@ -4,7 +4,6 @@ CONFIG_CGROUPS=y
# CONFIG_UID16 is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CPU_SUBTYPE_SH7770=y
CONFIG_SH_PCLK_FREQ=41666666

1
arch/sh/configs/shx3_defconfig
View File

@ -22,7 +22,6 @@ CONFIG_PID_NS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_SLOB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y

16
arch/sh/oprofile/Makefile
View File

@ -1,16 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_OPROFILE) += oprofile.o
CFLAGS_common.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
oprof.o cpu_buffer.o buffer_sync.o \
event_buffer.o oprofile_files.o \
oprofilefs.o oprofile_stats.o \
timer_int.o )
ifeq ($(CONFIG_HW_PERF_EVENTS),y)
DRIVER_OBJS += $(addprefix ../../../drivers/oprofile/, oprofile_perf.o)
endif
oprofile-y := $(DRIVER_OBJS) common.o backtrace.o

80
arch/sh/oprofile/backtrace.c
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@ -1,80 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* SH specific backtracing code for oprofile
*
* Copyright 2007 STMicroelectronics Ltd.
*
* Author: Dave Peverley <dpeverley@mpc-data.co.uk>
*
* Based on ARM oprofile backtrace code by Richard Purdie and in turn, i386
* oprofile backtrace code by John Levon, David Smith
*/
#include <linux/oprofile.h>
#include <linux/sched.h>
#include <linux/kallsyms.h>
#include <linux/mm.h>
#include <asm/unwinder.h>
#include <asm/ptrace.h>
#include <linux/uaccess.h>
#include <asm/sections.h>
#include <asm/stacktrace.h>
static void backtrace_address(void *data, unsigned long addr, int reliable)
{
unsigned int *depth = data;
if ((*depth)--)
oprofile_add_trace(addr);
}
static struct stacktrace_ops backtrace_ops = {
.address = backtrace_address,
};
/* Limit to stop backtracing too far. */
static int backtrace_limit = 20;
static unsigned long *
user_backtrace(unsigned long *stackaddr, struct pt_regs *regs)
{
unsigned long buf_stack;
/* Also check accessibility of address */
if (!access_ok(stackaddr, sizeof(unsigned long)))
return NULL;
if (__copy_from_user_inatomic(&buf_stack, stackaddr, sizeof(unsigned long)))
return NULL;
/* Quick paranoia check */
if (buf_stack & 3)
return NULL;
oprofile_add_trace(buf_stack);
stackaddr++;
return stackaddr;
}
void sh_backtrace(struct pt_regs * const regs, unsigned int depth)
{
unsigned long *stackaddr;
/*
* Paranoia - clip max depth as we could get lost in the weeds.
*/
if (depth > backtrace_limit)
depth = backtrace_limit;
stackaddr = (unsigned long *)kernel_stack_pointer(regs);
if (!user_mode(regs)) {
if (depth)
unwind_stack(NULL, regs, stackaddr,
&backtrace_ops, &depth);
return;
}
while (depth-- && (stackaddr != NULL))
stackaddr = user_backtrace(stackaddr, regs);
}

64
arch/sh/oprofile/common.c
View File

@ -1,64 +0,0 @@
/*
* arch/sh/oprofile/init.c
*
* Copyright (C) 2003 - 2010 Paul Mundt
*
* Based on arch/mips/oprofile/common.c:
*
* Copyright (C) 2004, 2005 Ralf Baechle
* Copyright (C) 2005 MIPS Technologies, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/kernel.h>
#include <linux/oprofile.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/smp.h>
#include <linux/perf_event.h>
#include <linux/slab.h>
#include <asm/processor.h>
extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth);
#ifdef CONFIG_HW_PERF_EVENTS
/*
* This will need to be reworked when multiple PMUs are supported.
*/
static char *sh_pmu_op_name;
char *op_name_from_perf_id(void)
{
return sh_pmu_op_name;
}
int __init oprofile_arch_init(struct oprofile_operations *ops)
{
ops->backtrace = sh_backtrace;
if (perf_num_counters() == 0)
return -ENODEV;
sh_pmu_op_name = kasprintf(GFP_KERNEL, "%s/%s",
UTS_MACHINE, perf_pmu_name());
if (unlikely(!sh_pmu_op_name))
return -ENOMEM;
return oprofile_perf_init(ops);
}
void oprofile_arch_exit(void)
{
oprofile_perf_exit();
kfree(sh_pmu_op_name);
}
#else
int __init oprofile_arch_init(struct oprofile_operations *ops)
{
ops->backtrace = sh_backtrace;
return -ENODEV;
}
void oprofile_arch_exit(void) {}
#endif /* CONFIG_HW_PERF_EVENTS */