]> git.wh0rd.org Git - patches.git/blob - bfin-nommu-maps.patch
scummvm random work
[patches.git] / bfin-nommu-maps.patch
1 Index: fs/proc/task_nommu.c
2 ===================================================================
3 RCS file: /usr/local/src/blackfin/rsync/uclinux533/uClinux-dist/linux-2.6.x/fs/proc/task_nommu.c,v
4 retrieving revision 1.4
5 diff -u -p -r1.4 task_nommu.c
6 --- fs/proc/task_nommu.c        12 Aug 2005 04:12:03 -0000      1.4
7 +++ fs/proc/task_nommu.c        25 Aug 2006 23:03:47 -0000
8 @@ -141,20 +141,227 @@ out:
9   * Albert D. Cahalan suggested to fake entries for the traditional
10   * sections here.  This might be worth investigating.
11   */
12 +static void pad_len_spaces(struct seq_file *m, int len)
13 +{
14 +       len = 25 + sizeof(void*) * 6 - len;
15 +       if (len < 1)
16 +               len = 1;
17 +       seq_printf(m, "%*c", len, ' ');
18 +}
19 +
20  static int show_map(struct seq_file *m, void *v)
21  {
22 +       struct task_struct *task = m->private;
23 +       struct vm_area_struct *vma = v;
24 +       struct mm_struct *mm = vma->vm_mm;
25 +       struct file *file = vma->vm_file;
26 +       int flags = vma->vm_flags;
27 +       unsigned long ino = 0;
28 +       dev_t dev = 0;
29 +       int len;
30 +
31 +printk("!!! BOOYA %s\n", __FUNCTION__);
32 +
33 +       if (file) {
34 +               struct inode *inode = vma->vm_file->f_dentry->d_inode;
35 +               dev = inode->i_sb->s_dev;
36 +               ino = inode->i_ino;
37 +       }
38 +
39 +       seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
40 +                       vma->vm_start,
41 +                       vma->vm_end,
42 +                       flags & VM_READ ? 'r' : '-',
43 +                       flags & VM_WRITE ? 'w' : '-',
44 +                       flags & VM_EXEC ? 'x' : '-',
45 +                       flags & VM_MAYSHARE ? 's' : 'p',
46 +                       vma->vm_pgoff << PAGE_SHIFT,
47 +                       MAJOR(dev), MINOR(dev), ino, &len);
48 +
49 +       /*
50 +        * Print the dentry name for named mappings, and a
51 +        * special [heap] marker for the heap:
52 +        */
53 +       if (file) {
54 +               pad_len_spaces(m, len);
55 +               seq_path(m, file->f_vfsmnt, file->f_dentry, "\n");
56 +       } else {
57 +               if (mm) {
58 +                       if (vma->vm_start <= mm->start_brk &&
59 +                                               vma->vm_end >= mm->brk) {
60 +                               pad_len_spaces(m, len);
61 +                               seq_puts(m, "[heap]");
62 +                       } else {
63 +                               if (vma->vm_start <= mm->start_stack &&
64 +                                       vma->vm_end >= mm->start_stack) {
65 +
66 +                                       pad_len_spaces(m, len);
67 +                                       seq_puts(m, "[stack]");
68 +                               }
69 +                       }
70 +               } else {
71 +                       pad_len_spaces(m, len);
72 +                       seq_puts(m, "[vdso]");
73 +               }
74 +       }
75 +       seq_putc(m, '\n');
76 +
77 +/*
78 +       if (mss)
79 +               seq_printf(m,
80 +                          "Size:          %8lu kB\n"
81 +                          "Rss:           %8lu kB\n"
82 +                          "Shared_Clean:  %8lu kB\n"
83 +                          "Shared_Dirty:  %8lu kB\n"
84 +                          "Private_Clean: %8lu kB\n"
85 +                          "Private_Dirty: %8lu kB\n",
86 +                          (vma->vm_end - vma->vm_start) >> 10,
87 +                          mss->resident >> 10,
88 +                          mss->shared_clean  >> 10,
89 +                          mss->shared_dirty  >> 10,
90 +                          mss->private_clean >> 10,
91 +                          mss->private_dirty >> 10);
92 +*/
93 +#define get_gate_vma(x) NULL
94 +       if (m->count < m->size)  /* vma is copied successfully */
95 +               m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
96         return 0;
97  }
98  static void *m_start(struct seq_file *m, loff_t *pos)
99  {
100 -       return NULL;
101 +       struct task_struct *task = m->private;
102 +       unsigned long last_addr = m->version;
103 +       struct mm_struct *mm;
104 +       struct vm_area_struct *vma, *tail_vma;
105 +       struct vm_list_struct *vml;
106 +       loff_t l = *pos;
107 +printk("!!! BOOYA %s\n", __FUNCTION__);
108 +printk("%s:%i: %p %lu \n", __FUNCTION__, __LINE__, task, last_addr);
109 +       /*
110 +        * We remember last_addr rather than next_addr to hit with
111 +        * mmap_cache most of the time. We have zero last_addr at
112 +        * the beginning and also after lseek. We will have -1 last_addr
113 +        * after the end of the vmas.
114 +        */
115 +
116 +       if (last_addr == -1UL)
117 +               return NULL;
118 +printk("%s:%i: \n", __FUNCTION__, __LINE__);
119 +
120 +       mm = get_task_mm(task);
121 +       if (!mm)
122 +               return NULL;
123 +printk("%s:%i: mm=%p \n", __FUNCTION__, __LINE__, mm);
124 +
125 +       for (vml = mm->context.vmlist; vml; vml = vml->next) {
126 +               vma = vml->vma;
127 +char _tmpbuf[1024];
128 +        char *p;
129 +       unsigned long ino = 0;
130 +       dev_t dev = 0;
131 +int flags = vma->vm_flags;
132 +       struct file *file = vma->vm_file;
133 +       if (file) {
134 +               struct inode *inode = vma->vm_file->f_dentry->d_inode;
135 +               dev = inode->i_sb->s_dev;
136 +               ino = inode->i_ino;
137 +       }
138 +//             printk("%s:%i: %p: %lu -> %lu\n", __FUNCTION__, __LINE__, vml->vma,
139 +//                     vml->vma->vm_start, vml->vma->vm_end);
140 +printk("MAPS: %08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n ",
141 +                       vma->vm_start,
142 +                       vma->vm_end,
143 +                       flags & VM_READ ? 'r' : '-',
144 +                       flags & VM_WRITE ? 'w' : '-',
145 +                       flags & VM_EXEC ? 'x' : '-',
146 +                       flags & VM_MAYSHARE ? 's' : 'p',
147 +                       vma->vm_pgoff << PAGE_SHIFT,
148 +                       MAJOR(dev), MINOR(dev), ino);
149 +if (file) {
150 +p = d_path(file->f_dentry, file->f_vfsmnt, _tmpbuf, sizeof(_tmpbuf));
151 +printk(" %s ", p);
152 +
153 +} else {
154 +               if (mm) {
155 +                       if (vma->vm_start <= mm->start_brk &&
156 +                                               vma->vm_end >= mm->brk) {
157 +                               printk(" [heap]");
158 +                       } else {
159 +                               if (vma->vm_start <= mm->start_stack &&
160 +                                       vma->vm_end >= mm->start_stack) {
161 +
162 +                                       printk(" [stack]");
163 +                               }
164 +                       }
165 +               }
166 +}
167 +printk("\n");
168 +
169 +//             if (addr >= vml->vma->vm_start && addr < vml->vma->vm_end)
170 +//                     break;
171 +       }
172 +
173 +       tail_vma = get_gate_vma(task);
174 +       down_read(&mm->mmap_sem);
175 +
176 +       /* Start with last addr hint */
177 +       if (last_addr && (vma = find_vma(mm, last_addr))) {
178 +               vma = vma->vm_next;
179 +               goto out;
180 +       }
181 +printk("%s:%i: \n", __FUNCTION__, __LINE__);
182 +
183 +       /*
184 +        * Check the vma index is within the range and do
185 +        * sequential scan until m_index.
186 +        */
187 +       vma = NULL;
188 +       if ((unsigned long)l < mm->map_count) {
189 +               vma = mm->mmap;
190 +               while (l-- && vma)
191 +                       vma = vma->vm_next;
192 +               goto out;
193 +       }
194 +printk("%s:%i: \n", __FUNCTION__, __LINE__);
195 +
196 +       if (l != mm->map_count)
197 +               tail_vma = NULL; /* After gate vma */
198 +printk("%s:%i: \n", __FUNCTION__, __LINE__);
199 +
200 +out:
201 +       if (vma)
202 +               return vma;
203 +printk("%s:%i: %p\n", __FUNCTION__, __LINE__, tail_vma);
204 +
205 +       /* End of vmas has been reached */
206 +       m->version = (tail_vma != NULL)? 0: -1UL;
207 +       up_read(&mm->mmap_sem);
208 +       mmput(mm);
209 +       return tail_vma;
210  }
211  static void m_stop(struct seq_file *m, void *v)
212  {
213 +       struct task_struct *task = m->private;
214 +       struct vm_area_struct *vma = v;
215 +printk("!!! BOOYA %s\n", __FUNCTION__);
216 +       if (vma && vma != get_gate_vma(task)) {
217 +               struct mm_struct *mm = vma->vm_mm;
218 +               up_read(&mm->mmap_sem);
219 +               mmput(mm);
220 +       }
221  }
222  static void *m_next(struct seq_file *m, void *v, loff_t *pos)
223  {
224 -       return NULL;
225 +       struct task_struct *task = m->private;
226 +       struct vm_area_struct *vma = v;
227 +       struct vm_area_struct *tail_vma = get_gate_vma(task);
228 +printk("!!! BOOYA %s\n", __FUNCTION__);
229 +
230 +       (*pos)++;
231 +       if (vma && (vma != tail_vma) && vma->vm_next)
232 +               return vma->vm_next;
233 +       m_stop(m, v);
234 +       return (vma != tail_vma)? tail_vma: NULL;
235  }
236  struct seq_operations proc_pid_maps_op = {
237         .start  = m_start,