mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
Remove old kernel module
This isn't necessary anymore, we'll just rely on Linux perf.
This commit is contained in:
Christian Hergert
@ -1,71 +0,0 @@
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ifneq ($(KERNELRELEASE),)
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obj-m := sysprof-module.o
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else
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ifeq ($(PREFIX),)
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PREFIX := /usr/local
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endif
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MODULE := sysprof-module
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KDIR := /lib/modules/$(shell uname -r)/build # /home/ssp/linux-2.6.19/
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INCLUDE := -isystem $(KDIR)/include
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MODCFLAGS := -DMODULE -D__KERNEL__ -Wall $(INCLUDE)
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KMAKE := $(MAKE) -C $(KDIR) SUBDIRS=$$PWD
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modules: $(MODULE).o
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insert_module: install
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modprobe -r sysprof-module
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modprobe sysprof-module
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ifneq ($(shell (uname -r | grep 2.6) > /dev/null ; echo -n $$?),0)
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echo A 2.6 kernel is required; exit 1
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endif
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# build module
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$(MODULE).o: $(MODULE).c $(MODULE).h
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$(KMAKE) modules
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# Automake rules, as per "Third-Party Makefiles" in the automake manual
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all: $(MODULE).o
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distdir:
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cp sysprof-module.c $(distdir)
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cp sysprof-module.h $(distdir)
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cp Makefile $(distdir)
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install:
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$(KMAKE) modules_install
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[ -e /sbin/depmod ] && /sbin/depmod
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install-data:
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install-exec:
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uninstall:
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install-info:
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installdirs:
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check:
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installcheck:
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mostlyclean:
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clean:
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rm -f sysprof-module.ko
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rm -f sysprof-module.o
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rm -f sysprof-module.mod.o
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rm -f sysprof-module.mod.c
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distclean: clean
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maintainer-clean:
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dvi:
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pdf:
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info:
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html:
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tags:
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ctags:
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endif
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@ -1,673 +0,0 @@
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/* -*- c-basic-offset: 8 -*- */
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/* Sysprof -- Sampling, systemwide CPU profiler
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* Copyright 2004, Red Hat, Inc.
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* Copyright 2004, 2005, Soeren Sandmann
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef CONFIG_SMP
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# define __SMP__
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#endif
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#include <asm/atomic.h>
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#include <linux/kernel.h> /* Needed for KERN_ALERT */
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#include <linux/module.h> /* Needed by all modules */
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#include <linux/sched.h>
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#include <linux/miscdevice.h>
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#include <linux/proc_fs.h>
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#include <asm/uaccess.h>
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#include <asm/stacktrace.h>
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#include <linux/poll.h>
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#include <linux/highmem.h>
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#include <linux/pagemap.h>
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#include <linux/profile.h>
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#include "../config.h"
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#include "sysprof-module.h"
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#include <linux/version.h>
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#if (KERNEL_VERSION(2,6,9) > LINUX_VERSION_CODE) || (!CONFIG_PROFILING)
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# error Sysprof needs a Linux 2.6.9 kernel or later, with profiling support compiled in.
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#endif
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#if (KERNEL_VERSION(2,6,11) > LINUX_VERSION_CODE)
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#define OLD_PROFILE
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#include <linux/notifier.h>
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#endif
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#include <linux/kallsyms.h>
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Soeren Sandmann (sandmann@daimi.au.dk)");
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static unsigned char area_backing [sizeof (SysprofMmapArea) + PAGE_SIZE];
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static SysprofMmapArea *area;
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static atomic_t client_count = ATOMIC_INIT(0);
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DECLARE_WAIT_QUEUE_HEAD (wait_for_trace);
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/* Macro the names of the registers that are used on each architecture */
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#if defined(CONFIG_X86)
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# if LINUX_VERSION_CODE >= KERNEL_VERSION (2,6,25)
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# define REG_FRAME_PTR bp
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# define REG_INS_PTR ip
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# define REG_STACK_PTR sp
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# define REG_STACK_PTR0 sp0
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# else
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# define REG_FRAME_PTR ebp
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# define REG_INS_PTR eip
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# define REG_STACK_PTR esp
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# define REG_STACK_PTR0 esp0
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# endif
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#elif defined(CONFIG_X86_64) /* pre-2.6.25 separate architecture */
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# define REG_FRAME_PTR rbp
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# define REG_INS_PTR rip
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# define REG_STACK_PTR rsp
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# define REG_STACK_PTR0 rsp0
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#else
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# error Sysprof only supports the i386 and x86-64 architectures
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#endif
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#define SAMPLES_PER_SECOND 250
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#define INTERVAL ((HZ <= SAMPLES_PER_SECOND)? 1 : (HZ / SAMPLES_PER_SECOND))
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typedef struct StackFrame StackFrame;
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struct StackFrame {
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unsigned long next;
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unsigned long return_address;
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};
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static int
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read_frame (void *frame_pointer, StackFrame *frame)
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{
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#if 0
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/* This is commented out because we seem to be called with
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* (current_thread_info()->addr_limit.seg)) == 0
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* which means access_ok() _always_ fails.
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*
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* Not sure why (or if) this isn't the case for oprofile
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*/
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if (!access_ok(VERIFY_READ, frame_pointer, sizeof(StackFrame)))
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return 1;
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#endif
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if (__copy_from_user_inatomic (
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frame, frame_pointer, sizeof (StackFrame)))
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return 1;
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return 0;
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}
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DEFINE_PER_CPU(int, n_samples);
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static int
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minimum (int a, int b)
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{
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return a > b ? b : a;
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}
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static void
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nt_memcpy (void *dst, void *src, int n_bytes)
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{
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#if defined(CONFIG_X86_64) || defined(CONFIG_X86)
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if (((unsigned long)dst & 3) ||
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((unsigned long)src & 3)) {
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memcpy (dst, src, n_bytes);
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}
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else {
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int i;
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if ((unsigned long)src & 7) {
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*(uint32_t *)dst = *(uint32_t *)src;
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src += 4;
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dst += 4;
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}
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for (i = 0; i < n_bytes; i += 8) {
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__asm__ __volatile__ (
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" movq (%0, %2), %%mm0\n"
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" movntq %%mm0, (%1, %2)\n"
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:
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: "r" (src), "r" (dst), "r" (i)
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: "memory");
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}
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__asm__ __volatile__ (
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"emms\n");
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}
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#else
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memcpy (dst, src, n_bytes);
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#endif
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}
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/*
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* The functions backtrace_* are based on oprofile's backtrace.c
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*
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* @remark Copyright 2002 OProfile authors
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* @remark Read the file COPYING
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*
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* @author John Levon
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* @author David Smith
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*/
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static void backtrace_warning_symbol(void *data, char *msg,
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unsigned long symbol)
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{
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/* Ignore warnings */
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}
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static void backtrace_warning(void *data, char *msg)
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{
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/* Ignore warnings */
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}
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struct backtrace_info_t
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{
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SysprofStackTrace *trace;
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int pos;
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};
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static int backtrace_stack(void *data, char *name)
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{
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/* Don't bother with IRQ stacks for now */
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return -1;
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}
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static void backtrace_address(void *data, unsigned long addr, int reliable)
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{
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struct backtrace_info_t *info = data;
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if (info->pos < SYSPROF_MAX_ADDRESSES && reliable)
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info->trace->kernel_stack[info->pos++] = (void *)addr;
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}
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const static struct stacktrace_ops backtrace_ops = {
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.warning = backtrace_warning,
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.warning_symbol = backtrace_warning_symbol,
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.stack = backtrace_stack,
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.address = backtrace_address,
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};
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static struct pt_regs *
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trace_kernel (struct pt_regs *regs,
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SysprofStackTrace *trace)
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{
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struct backtrace_info_t info;
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char *eos;
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unsigned long stack;
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unsigned long bp;
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trace->kernel_stack[0] = (void *)regs->REG_INS_PTR;
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info.trace = trace;
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info.pos = 1;
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stack = (unsigned long) ((char *)regs + sizeof (struct pt_regs));
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#ifdef CONFIG_FRAME_POINTER
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/* We can't set it to 0, because then the stack trace will
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* contain the stack of the timer interrupt
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*/
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bp = regs->REG_FRAME_PTR;
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#else
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bp = 0;
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#endif
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dump_trace(NULL, regs, stack,
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
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bp,
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#endif
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&backtrace_ops, &info);
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trace->n_kernel_words = info.pos;
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/* Now trace the user stack */
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eos = (char *)current->thread.REG_STACK_PTR0 - sizeof (struct pt_regs);
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return (struct pt_regs *)eos;
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}
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static void
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framepointer_trace (struct pt_regs *regs, SysprofStackTrace *trace)
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{
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void *framepointer;
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int i;
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StackFrame frame;
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i = 1;
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framepointer = (void *)regs->REG_FRAME_PTR;
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while (read_frame (framepointer, &frame) == 0 &&
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i < SYSPROF_MAX_ADDRESSES &&
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(unsigned long)framepointer >= regs->REG_STACK_PTR)
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{
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trace->addresses[i++] = (void *)frame.return_address;
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framepointer = (StackFrame *)frame.next;
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}
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trace->n_addresses = i;
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}
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static void
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heuristic_trace (struct pt_regs *regs,
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SysprofStackTrace *trace)
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{
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unsigned long esp = regs->REG_STACK_PTR;
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unsigned long eos = current->mm->start_stack;
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if (esp < eos - (current->mm->stack_vm << PAGE_SHIFT)) {
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/* Stack pointer is not in stack map */
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printk (KERN_ALERT "too small stackpointer in %d\n", current->pid);
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return;
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}
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if (esp < eos) {
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#if 0
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printk (KERN_ALERT "ok stackpointer\n");
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#endif
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unsigned long i;
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int j;
|
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#if 0
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int n_bytes = minimum (eos - esp, (SYSPROF_MAX_ADDRESSES - 1) * sizeof (void *));
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#endif
|
||||
|
||||
j = 1;
|
||||
for (i = esp; i < eos && j < SYSPROF_MAX_ADDRESSES; i += sizeof (void *)) {
|
||||
unsigned long x;
|
||||
struct vm_area_struct *vma;
|
||||
|
||||
if (__copy_from_user_inatomic (&x, (void *)i, sizeof (unsigned long)))
|
||||
break;
|
||||
|
||||
vma = find_vma (current->mm, x);
|
||||
|
||||
if (vma && vma->vm_flags & VM_EXEC)
|
||||
if (vma->vm_start <= x && x <= vma->vm_end)
|
||||
trace->addresses[j++] = (void *)x;
|
||||
}
|
||||
|
||||
#if 0
|
||||
if (__copy_from_user_inatomic (&(trace->addresses[1]), esp, n_bytes) == 0)
|
||||
trace->n_addresses = n_bytes / sizeof (void *);
|
||||
else
|
||||
trace->n_addresses = 1;
|
||||
|
||||
j = 1;
|
||||
for (i = esp; i < eos && j < SYSPROF_MAX_ADDRESSES; i += sizeof (void *)) {
|
||||
void *x;
|
||||
if (__copy_from_user_inatomic (
|
||||
&x, (char *)i, sizeof (x)) == 0) {
|
||||
|
||||
if ((unsigned long)x != 1)
|
||||
trace->addresses[j++] = x;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
trace->n_addresses = j;
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
#if 0
|
||||
printk (KERN_ALERT "too big stackpointer\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifdef OLD_PROFILE
|
||||
static int timer_notify(struct notifier_block * self, unsigned long val, void * data)
|
||||
#else
|
||||
static int
|
||||
timer_notify (struct pt_regs *regs)
|
||||
#endif
|
||||
{
|
||||
#ifdef OLD_PROFILE
|
||||
struct pt_regs * regs = (struct pt_regs *)data;
|
||||
#endif
|
||||
SysprofStackTrace *trace = &(area->traces[area->head]);
|
||||
int is_user;
|
||||
static atomic_t in_timer_notify = ATOMIC_INIT(1);
|
||||
int n;
|
||||
|
||||
n = ++get_cpu_var(n_samples);
|
||||
put_cpu_var(n_samples);
|
||||
|
||||
if (n % INTERVAL != 0)
|
||||
return 0;
|
||||
|
||||
/* 0: locked, 1: unlocked */
|
||||
if (!atomic_dec_and_test(&in_timer_notify)) {
|
||||
goto out;
|
||||
}
|
||||
|
||||
is_user = user_mode(regs);
|
||||
|
||||
if (!current || current->pid == 0)
|
||||
goto out;
|
||||
|
||||
if (is_user && current->state != TASK_RUNNING)
|
||||
goto out;
|
||||
|
||||
memset(trace, 0, sizeof (SysprofStackTrace));
|
||||
|
||||
trace->pid = current->pid;
|
||||
|
||||
trace->n_kernel_words = 0;
|
||||
trace->n_addresses = 0;
|
||||
|
||||
if (!is_user)
|
||||
regs = trace_kernel (regs, trace);
|
||||
|
||||
trace->addresses[0] = (void *)regs->REG_INS_PTR;
|
||||
trace->n_addresses = 1;
|
||||
|
||||
if (current->mm) {
|
||||
#ifdef CONFIG_X86_64
|
||||
heuristic_trace (regs, trace);
|
||||
#elif CONFIG_X86
|
||||
framepointer_trace (regs, trace);
|
||||
#else
|
||||
#error Sysprof only supports the i386 and x86-64 architectures
|
||||
#endif
|
||||
}
|
||||
|
||||
if (trace->n_addresses == SYSPROF_MAX_ADDRESSES)
|
||||
trace->truncated = 1;
|
||||
else
|
||||
trace->truncated = 0;
|
||||
|
||||
if (area->head++ == SYSPROF_N_TRACES - 1)
|
||||
area->head = 0;
|
||||
|
||||
wake_up (&wait_for_trace);
|
||||
|
||||
out:
|
||||
atomic_inc(&in_timer_notify);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef OLD_PROFILE
|
||||
static struct notifier_block timer_notifier = {
|
||||
.notifier_call = timer_notify,
|
||||
NULL,
|
||||
0
|
||||
};
|
||||
#endif
|
||||
|
||||
static ssize_t
|
||||
sysprof_read(struct file *file, char *buffer, size_t count, loff_t *offset)
|
||||
{
|
||||
file->private_data = &(area->traces[area->head]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
n_traces_available(SysprofStackTrace *tail)
|
||||
{
|
||||
SysprofStackTrace *head = &(area->traces[area->head]);
|
||||
|
||||
if (head >= tail)
|
||||
return head - tail;
|
||||
else
|
||||
return SYSPROF_N_TRACES - (tail - head);
|
||||
}
|
||||
|
||||
static unsigned int
|
||||
sysprof_poll(struct file *file, poll_table *poll_table)
|
||||
{
|
||||
SysprofStackTrace *tail = file->private_data;
|
||||
|
||||
if (n_traces_available (tail) >= 16)
|
||||
return POLLIN | POLLRDNORM;
|
||||
|
||||
poll_wait(file, &wait_for_trace, poll_table);
|
||||
|
||||
if (n_traces_available (tail) >= 16)
|
||||
return POLLIN | POLLRDNORM;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
sysprof_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
int retval = 0;
|
||||
|
||||
if (atomic_inc_return(&client_count) == 1) {
|
||||
#ifndef OLD_PROFILE
|
||||
retval = register_timer_hook (timer_notify);
|
||||
#else
|
||||
retval = register_profile_notifier (&timer_notifier);
|
||||
#endif
|
||||
}
|
||||
|
||||
file->private_data = &(area->traces[area->head]);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23))
|
||||
static int
|
||||
sysprof_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
|
||||
{
|
||||
unsigned long area_start;
|
||||
unsigned long virt;
|
||||
|
||||
#if 0
|
||||
printk (KERN_ALERT "fault called: %p (offset: %d) area: %p\n", vmf->virtual_address, addr - vma->vm_start, area);
|
||||
#endif
|
||||
|
||||
area_start = (unsigned long)area;
|
||||
|
||||
virt = area_start + ((unsigned long)vmf->virtual_address - vma->vm_start);
|
||||
if (virt > area_start + sizeof (SysprofMmapArea))
|
||||
return VM_FAULT_SIGBUS;
|
||||
|
||||
vmf->page = vmalloc_to_page ((void *)virt);
|
||||
get_page (vmf->page);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
static struct page *
|
||||
sysprof_nopage(struct vm_area_struct *vma, unsigned long addr, int *type)
|
||||
{
|
||||
unsigned long area_start;
|
||||
unsigned long virt;
|
||||
struct page *page_ptr;
|
||||
|
||||
#if 0
|
||||
printk (KERN_ALERT "nopage called: %p (offset: %d) area: %p\n", addr, addr - vma->vm_start, area);
|
||||
#endif
|
||||
|
||||
area_start = (unsigned long)area;
|
||||
|
||||
virt = area_start + (addr - vma->vm_start);
|
||||
|
||||
if (virt > area_start + sizeof (SysprofMmapArea))
|
||||
return NOPAGE_SIGBUS;
|
||||
|
||||
page_ptr = vmalloc_to_page ((void *)virt);
|
||||
|
||||
get_page (page_ptr);
|
||||
|
||||
if (type)
|
||||
*type = VM_FAULT_MINOR;
|
||||
|
||||
return page_ptr;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int
|
||||
sysprof_mmap(struct file *filp, struct vm_area_struct *vma)
|
||||
{
|
||||
static struct vm_operations_struct ops = {
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23))
|
||||
.fault = sysprof_fault,
|
||||
#else
|
||||
.nopage = sysprof_nopage,
|
||||
#endif
|
||||
};
|
||||
|
||||
if (vma->vm_flags & (VM_WRITE | VM_EXEC))
|
||||
return -EPERM;
|
||||
|
||||
vma->vm_flags |= VM_RESERVED;
|
||||
|
||||
vma->vm_ops = &ops;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
sysprof_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
if (atomic_dec_return(&client_count) == 0) {
|
||||
#ifndef OLD_PROFILE
|
||||
unregister_timer_hook (timer_notify);
|
||||
#else
|
||||
unregister_profile_notifier (&timer_notifier);
|
||||
#endif
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct file_operations sysprof_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = sysprof_read,
|
||||
.poll = sysprof_poll,
|
||||
.open = sysprof_open,
|
||||
.release = sysprof_release,
|
||||
.mmap = sysprof_mmap,
|
||||
};
|
||||
|
||||
static struct miscdevice sysprof_miscdev = {
|
||||
MISC_DYNAMIC_MINOR,
|
||||
"sysprof-trace",
|
||||
&sysprof_fops
|
||||
};
|
||||
|
||||
int
|
||||
init_module(void)
|
||||
{
|
||||
int ret;
|
||||
unsigned long area_page;
|
||||
|
||||
ret = misc_register(&sysprof_miscdev);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "sysprof: failed to register misc device\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
area_page = ((unsigned long)area_backing + PAGE_SIZE - 1) & PAGE_MASK;
|
||||
area = (SysprofMmapArea *)area_page;
|
||||
area->head = 0;
|
||||
|
||||
printk(KERN_ALERT "sysprof: loaded (%s)\n", PACKAGE_VERSION);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
cleanup_module(void)
|
||||
{
|
||||
misc_deregister(&sysprof_miscdev);
|
||||
|
||||
printk(KERN_ALERT "sysprof: unloaded\n");
|
||||
}
|
||||
|
||||
|
||||
#if 0
|
||||
/* The old userspace_reader code - someday it may be useful again */
|
||||
|
||||
typedef struct userspace_reader userspace_reader;
|
||||
struct userspace_reader
|
||||
{
|
||||
struct task_struct *task;
|
||||
unsigned long cache_address;
|
||||
unsigned long *cache;
|
||||
};
|
||||
|
||||
static int
|
||||
init_userspace_reader (userspace_reader *reader,
|
||||
struct task_struct *task)
|
||||
{
|
||||
reader->task = task;
|
||||
reader->cache = kmalloc (PAGE_SIZE, GFP_KERNEL);
|
||||
if (!reader->cache)
|
||||
return 0;
|
||||
reader->cache_address = 0x0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
read_user_space (userspace_reader *reader,
|
||||
unsigned long address,
|
||||
unsigned long *result)
|
||||
{
|
||||
unsigned long cache_address = reader->cache_address;
|
||||
int index, r;
|
||||
|
||||
if (!cache_address || cache_address != (address & PAGE_MASK))
|
||||
{
|
||||
if (!page_readable (reader, address))
|
||||
return 0;
|
||||
|
||||
cache_address = address & PAGE_MASK;
|
||||
|
||||
r = x_access_process_vm (reader->task, cache_address,
|
||||
reader->cache, PAGE_SIZE, 0);
|
||||
|
||||
if (r != PAGE_SIZE) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
reader->cache_address = cache_address;
|
||||
}
|
||||
|
||||
index = (address - cache_address) / sizeof (unsigned long);
|
||||
|
||||
*result = reader->cache[index];
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
done_userspace_reader (userspace_reader *reader)
|
||||
{
|
||||
kfree (reader->cache);
|
||||
}
|
||||
|
||||
static int
|
||||
read_frame (userspace_reader *reader, unsigned long addr, StackFrame *frame)
|
||||
{
|
||||
if (!addr || !frame)
|
||||
return 0;
|
||||
|
||||
frame->next = 0;
|
||||
frame->return_address = 0;
|
||||
|
||||
if (!read_user_space (reader, addr, &(frame->next)))
|
||||
return 0;
|
||||
|
||||
if (!read_user_space (reader, addr + 4, &(frame->return_address)))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,49 +0,0 @@
|
||||
/* Sysprof -- Sampling, systemwide CPU profiler
|
||||
* Copyright 2004, Red Hat, Inc.
|
||||
* Copyright 2004, 2005, Soeren Sandmann
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef SYSPROF_MODULE_H
|
||||
#define SYSPROF_MODULE_H
|
||||
|
||||
typedef struct SysprofStackTrace SysprofStackTrace;
|
||||
typedef struct SysprofStackInfo SysprofStackInfo;
|
||||
typedef struct SysprofMmapArea SysprofMmapArea;
|
||||
|
||||
#define SYSPROF_N_TRACES 64
|
||||
#define SYSPROF_MAX_ADDRESSES 126
|
||||
|
||||
struct SysprofStackTrace
|
||||
{
|
||||
void *kernel_stack[SYSPROF_MAX_ADDRESSES];
|
||||
void *addresses[SYSPROF_MAX_ADDRESSES];
|
||||
int n_kernel_words;
|
||||
int n_addresses; /* note: this can be 1 if the process was compiled
|
||||
* with -fomit-frame-pointer or is otherwise weird
|
||||
*/
|
||||
int pid; /* -1 if in kernel */
|
||||
int truncated;
|
||||
};
|
||||
|
||||
struct SysprofMmapArea
|
||||
{
|
||||
SysprofStackTrace traces[SYSPROF_N_TRACES];
|
||||
|
||||
unsigned int head;
|
||||
};
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user