diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/ia64/Makefile | 1 | ||||
| -rw-r--r-- | arch/ia64/configs/bigsur_defconfig | 1 | ||||
| -rw-r--r-- | arch/ia64/oprofile/Makefile | 10 | ||||
| -rw-r--r-- | arch/ia64/oprofile/backtrace.c | 131 | ||||
| -rw-r--r-- | arch/ia64/oprofile/init.c | 28 |
6 files changed, 0 insertions, 172 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index eed59ec32657..2ad7a8d29fcc 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -24,7 +24,6 @@ config IA64 select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_EXIT_THREAD select HAVE_IDE - select HAVE_OPROFILE select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_FTRACE_MCOUNT_RECORD diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index 703b1c4f6d12..33c11fa31192 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -52,7 +52,6 @@ core-y += arch/ia64/kernel/ arch/ia64/mm/ core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/ drivers-y += arch/ia64/pci/ arch/ia64/hp/common/ -drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ PHONY += compressed check diff --git a/arch/ia64/configs/bigsur_defconfig b/arch/ia64/configs/bigsur_defconfig index cfed5ed89301..c409756b5396 100644 --- a/arch/ia64/configs/bigsur_defconfig +++ b/arch/ia64/configs/bigsur_defconfig @@ -2,7 +2,6 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_LOG_BUF_SHIFT=16 CONFIG_PROFILING=y -CONFIG_OPROFILE=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_PARTITION_ADVANCED=y diff --git a/arch/ia64/oprofile/Makefile b/arch/ia64/oprofile/Makefile deleted file mode 100644 index fc7944d462f4..000000000000 --- a/arch/ia64/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/ia64/oprofile/backtrace.c b/arch/ia64/oprofile/backtrace.c deleted file mode 100644 index 6a219a946050..000000000000 --- a/arch/ia64/oprofile/backtrace.c +++ /dev/null @@ -1,131 +0,0 @@ -/** - * @file backtrace.c - * - * @remark Copyright 2004 Silicon Graphics Inc. All Rights Reserved. - * @remark Read the file COPYING - * - * @author Greg Banks <gnb@melbourne.sgi.com> - * @author Keith Owens <kaos@melbourne.sgi.com> - * Based on work done for the ia64 port of the SGI kernprof patch, which is - * Copyright (c) 2003-2004 Silicon Graphics Inc. All Rights Reserved. - */ - -#include <linux/oprofile.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <asm/ptrace.h> - -/* - * For IA64 we need to perform a complex little dance to get both - * the struct pt_regs and a synthetic struct switch_stack in place - * to allow the unwind code to work. This dance requires our unwind - * using code to be called from a function called from unw_init_running(). - * There we only get a single void* data pointer, so use this struct - * to hold all the data we need during the unwind. - */ -typedef struct -{ - unsigned int depth; - struct pt_regs *regs; - struct unw_frame_info frame; - unsigned long *prev_pfs_loc; /* state for WAR for old spinlock ool code */ -} ia64_backtrace_t; - -/* Returns non-zero if the PC is in the Interrupt Vector Table */ -static __inline__ int in_ivt_code(unsigned long pc) -{ - extern char ia64_ivt[]; - return (pc >= (u_long)ia64_ivt && pc < (u_long)ia64_ivt+32768); -} - -/* - * Unwind to next stack frame. - */ -static __inline__ int next_frame(ia64_backtrace_t *bt) -{ - /* - * Avoid unsightly console message from unw_unwind() when attempting - * to unwind through the Interrupt Vector Table which has no unwind - * information. - */ - if (in_ivt_code(bt->frame.ip)) - return 0; - - /* - * WAR for spinlock contention from leaf functions. ia64_spinlock_contention_pre3_4 - * has ar.pfs == r0. Leaf functions do not modify ar.pfs so ar.pfs remains - * as 0, stopping the backtrace. Record the previous ar.pfs when the current - * IP is in ia64_spinlock_contention_pre3_4 then unwind, if pfs_loc has not changed - * after unwind then use pt_regs.ar_pfs which is where the real ar.pfs is for - * leaf functions. - */ - if (bt->prev_pfs_loc && bt->regs && bt->frame.pfs_loc == bt->prev_pfs_loc) - bt->frame.pfs_loc = &bt->regs->ar_pfs; - bt->prev_pfs_loc = NULL; - - return unw_unwind(&bt->frame) == 0; -} - - -static void do_ia64_backtrace(struct unw_frame_info *info, void *vdata) -{ - ia64_backtrace_t *bt = vdata; - struct switch_stack *sw; - int count = 0; - u_long pc, sp; - - sw = (struct switch_stack *)(info+1); - /* padding from unw_init_running */ - sw = (struct switch_stack *)(((unsigned long)sw + 15) & ~15); - - unw_init_frame_info(&bt->frame, current, sw); - - /* skip over interrupt frame and oprofile calls */ - do { - unw_get_sp(&bt->frame, &sp); - if (sp >= (u_long)bt->regs) - break; - if (!next_frame(bt)) - return; - } while (count++ < 200); - - /* finally, grab the actual sample */ - while (bt->depth-- && next_frame(bt)) { - unw_get_ip(&bt->frame, &pc); - oprofile_add_trace(pc); - if (unw_is_intr_frame(&bt->frame)) { - /* - * Interrupt received on kernel stack; this can - * happen when timer interrupt fires while processing - * a softirq from the tail end of a hardware interrupt - * which interrupted a system call. Don't laugh, it - * happens! Splice the backtrace into two parts to - * avoid spurious cycles in the gprof output. - */ - /* TODO: split rather than drop the 2nd half */ - break; - } - } -} - -void -ia64_backtrace(struct pt_regs * const regs, unsigned int depth) -{ - ia64_backtrace_t bt; - unsigned long flags; - - /* - * On IA64 there is little hope of getting backtraces from - * user space programs -- the problems of getting the unwind - * information from arbitrary user programs are extreme. - */ - if (user_mode(regs)) - return; - - bt.depth = depth; - bt.regs = regs; - bt.prev_pfs_loc = NULL; - local_irq_save(flags); - unw_init_running(do_ia64_backtrace, &bt); - local_irq_restore(flags); -} diff --git a/arch/ia64/oprofile/init.c b/arch/ia64/oprofile/init.c deleted file mode 100644 index a692ba16a07b..000000000000 --- a/arch/ia64/oprofile/init.c +++ /dev/null @@ -1,28 +0,0 @@ -/** - * @file init.c - * - * @remark Copyright 2002 OProfile authors - * @remark Read the file COPYING - * - * @author John Levon <levon@movementarian.org> - */ - -#include <linux/kernel.h> -#include <linux/oprofile.h> -#include <linux/init.h> -#include <linux/errno.h> - -extern int perfmon_init(struct oprofile_operations *ops); -extern void perfmon_exit(void); -extern void ia64_backtrace(struct pt_regs * const regs, unsigned int depth); - -int __init oprofile_arch_init(struct oprofile_operations *ops) -{ - ops->backtrace = ia64_backtrace; - return -ENODEV; -} - - -void oprofile_arch_exit(void) -{ -} |