From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262153AbTLBPYs (ORCPT ); Tue, 2 Dec 2003 10:24:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262188AbTLBPYs (ORCPT ); Tue, 2 Dec 2003 10:24:48 -0500 Received: from uirapuru.fua.br ([200.129.163.1]:18094 "EHLO uirapuru.fua.br") by vger.kernel.org with ESMTP id S262153AbTLBPYn (ORCPT ); Tue, 2 Dec 2003 10:24:43 -0500 Message-ID: <18562.200.212.156.130.1070375149.squirrel@webmail.ufam.edu.br> Date: Tue, 2 Dec 2003 12:25:49 -0200 (BRST) Subject: [PATCH 2.6.0] Resident memory info in fs/proc/task_mmu.c From: ajbezerra@ufam.edu.br To: linux-kernel@vger.kernel.org Cc: linux-mm@vger.kernel.org, riel@nl.linux.org User-Agent: SquirrelMail/1.4.1 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 Importance: Normal Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi everyone, Here is a suggestion for a patch of fs/proc/task_mm.c which gives more information about resident memory allocation for a given process PID at /proc/PID/status. We've searched for this info before (in this list) and as no one had found it interesting we developed the following solution which does not overload the kernel. We think so. BR, Allan --- linux-2.6.0-test11/fs/proc/task_mmu.c 2003-11-26 18:43:07.000000000 -0200 +++ linux/fs/proc/task_mmu.c 2003-11-29 08:55:39.000000000 -0200 @@ -3,44 +3,94 @@ #include #include +/** +* Allan Bezerra (ajsb@dcc.fua.br) & +* Bruna Moreira (brunampm@bol.com.br) & +* Edjard Mota (edjard@ufam.edu.br) & +* Mauricio Lin (mauriciolin@bol.com.br) & +* Include a process PID physical memory size info in the /proc/PID/status +*/ + +void resident_mem_size(struct mm_struct *mm, unsigned long start_address, unsigned long end_address, unsigned long *size) { + pgd_t *my_pgd; + pmd_t *my_pmd; + pte_t *my_pte; + unsigned long page; + + for (page = start_address; page < end_address; page += PAGE_SIZE) { + my_pgd = pgd_offset(mm, page); + if (pgd_none(*my_pgd) || pgd_bad(*my_pgd)) continue; + my_pmd = pmd_offset(my_pgd, page); + if (pmd_none(*my_pmd) || pmd_bad(*my_pmd)) continue; + my_pte = pte_offset_map(my_pmd, page); + if (pte_present(*my_pte)) { + *size += PAGE_SIZE; + } + } +} + char *task_mem(struct mm_struct *mm, char *buffer) { - unsigned long data = 0, stack = 0, exec = 0, lib = 0; - struct vm_area_struct *vma; - - down_read(&mm->mmap_sem); - for (vma = mm->mmap; vma; vma = vma->vm_next) { - unsigned long len = (vma->vm_end - vma->vm_start) >> 10; - if (!vma->vm_file) { - data += len; - if (vma->vm_flags & VM_GROWSDOWN) - stack += len; - continue; - } - if (vma->vm_flags & VM_WRITE) - continue; - if (vma->vm_flags & VM_EXEC) { - exec += len; - if (vma->vm_flags & VM_EXECUTABLE) - continue; - lib += len; - } - } - buffer += sprintf(buffer, - "VmSize:\t%8lu kB\n" - "VmLck:\t%8lu kB\n" - "VmRSS:\t%8lu kB\n" - "VmData:\t%8lu kB\n" - "VmStk:\t%8lu kB\n" - "VmExe:\t%8lu kB\n" - "VmLib:\t%8lu kB\n", - mm->total_vm << (PAGE_SHIFT-10), - mm->locked_vm << (PAGE_SHIFT-10), - mm->rss << (PAGE_SHIFT-10), - data - stack, stack, - exec - lib, lib); - up_read(&mm->mmap_sem); - return buffer; + unsigned long data = 0, stack = 0, exec = 0, lib = 0; + unsigned long phys_data = 0, phys_stack = 0, phys_exec = 0, phys_lib = 0; + unsigned long phys_brk = 0; + struct vm_area_struct *vma; + down_read(&mm->mmap_sem); + for (vma = mm->mmap; vma; vma = vma->vm_next) { + unsigned long len = (vma->vm_end - vma->vm_start) >> 10; + + if (!vma->vm_file) { + resident_mem_size(mm, vma->vm_start, vma->vm_end, &phys_data); + if (vma->vm_flags & VM_GROWSDOWN) { + stack += len; + resident_mem_size(mm, vma->vm_start, vma->vm_end, &phys_stack); + } + else { + data += len; + } + continue; + } + + if (vma->vm_flags & VM_WRITE) + continue; + + if (vma->vm_flags & VM_EXEC) { + exec += len; + resident_mem_size(mm, vma->vm_start, vma->vm_end, &phys_exec); + if (vma->vm_flags & VM_EXECUTABLE) { + continue; + } + lib += len; + resident_mem_size(mm, vma->vm_start, vma->vm_end, &phys_lib); + } + } + resident_mem_size(mm, mm->start_brk, mm->brk, &phys_brk); + buffer += sprintf(buffer, + "VmSize:\t%8lu kB\n" + "VmLck:\t%8lu kB\n" + "VmRSS:\t%8lu kB\n" + "VmData:\t%8lu kB\n" + "RssData:\t%8lu kB\n" + "VmStk:\t%8lu kB\n" + "RssStk:\t%8lu kB\n" + "VmExe:\t%8lu kB\n" + "RssExe:\t%8lu kB\n" + "VmLib:\t%8lu kB\n" + "RssLib:\t%8lu kB\n" + "VmHeap:\t%8lu KB\n" + "RssHeap:\t%8lu KB\n", + mm->total_vm << (PAGE_SHIFT-10), + mm->locked_vm << (PAGE_SHIFT-10), + mm->rss << (PAGE_SHIFT-10), + data, (phys_data - phys_stack) >> 10, + stack, phys_stack >> 10, + exec - lib, (phys_exec - phys_lib) >> 10, + lib, phys_lib >> 10, + (mm->brk - mm->start_brk) >> 10, + phys_brk >> 10 + ); + up_read(&mm->mmap_sem); + return buffer; } unsigned long task_vsize(struct mm_struct *mm)