2 * SN Platform GRU Driver
6 * This file supports the /proc interfaces for the GRU driver
8 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/proc_fs.h>
26 #include <linux/device.h>
27 #include <linux/seq_file.h>
28 #include <linux/uaccess.h>
31 #include "grutables.h"
33 #define printstat(s, f) printstat_val(s, &gru_stats.f, #f)
35 static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id)
37 unsigned long val = atomic_long_read(v);
40 seq_printf(s, "%16lu %s\n", val, id);
43 static int statistics_show(struct seq_file *s, void *p)
45 printstat(s, vdata_alloc);
46 printstat(s, vdata_free);
47 printstat(s, gts_alloc);
48 printstat(s, gts_free);
49 printstat(s, vdata_double_alloc);
50 printstat(s, gts_double_allocate);
51 printstat(s, assign_context);
52 printstat(s, assign_context_failed);
53 printstat(s, free_context);
54 printstat(s, load_context);
55 printstat(s, unload_context);
56 printstat(s, steal_context);
57 printstat(s, steal_context_failed);
59 printstat(s, break_cow);
60 printstat(s, asid_new);
61 printstat(s, asid_next);
62 printstat(s, asid_wrap);
63 printstat(s, asid_reuse);
65 printstat(s, call_os);
66 printstat(s, call_os_check_for_bug);
67 printstat(s, call_os_wait_queue);
68 printstat(s, user_flush_tlb);
69 printstat(s, user_unload_context);
70 printstat(s, user_exception);
71 printstat(s, set_task_slice);
72 printstat(s, migrate_check);
73 printstat(s, migrated_retarget);
74 printstat(s, migrated_unload);
75 printstat(s, migrated_unload_delay);
76 printstat(s, migrated_nopfn_retarget);
77 printstat(s, migrated_nopfn_unload);
78 printstat(s, tlb_dropin);
79 printstat(s, tlb_dropin_fail_no_asid);
80 printstat(s, tlb_dropin_fail_upm);
81 printstat(s, tlb_dropin_fail_invalid);
82 printstat(s, tlb_dropin_fail_range_active);
83 printstat(s, tlb_dropin_fail_idle);
84 printstat(s, tlb_dropin_fail_fmm);
85 printstat(s, mmu_invalidate_range);
86 printstat(s, mmu_invalidate_page);
87 printstat(s, mmu_clear_flush_young);
88 printstat(s, flush_tlb);
89 printstat(s, flush_tlb_gru);
90 printstat(s, flush_tlb_gru_tgh);
91 printstat(s, flush_tlb_gru_zero_asid);
92 printstat(s, copy_gpa);
93 printstat(s, mesq_receive);
94 printstat(s, mesq_receive_none);
95 printstat(s, mesq_send);
96 printstat(s, mesq_send_failed);
97 printstat(s, mesq_noop);
98 printstat(s, mesq_send_unexpected_error);
99 printstat(s, mesq_send_lb_overflow);
100 printstat(s, mesq_send_qlimit_reached);
101 printstat(s, mesq_send_amo_nacked);
102 printstat(s, mesq_send_put_nacked);
103 printstat(s, mesq_qf_not_full);
104 printstat(s, mesq_qf_locked);
105 printstat(s, mesq_qf_noop_not_full);
106 printstat(s, mesq_qf_switch_head_failed);
107 printstat(s, mesq_qf_unexpected_error);
108 printstat(s, mesq_noop_unexpected_error);
109 printstat(s, mesq_noop_lb_overflow);
110 printstat(s, mesq_noop_qlimit_reached);
111 printstat(s, mesq_noop_amo_nacked);
112 printstat(s, mesq_noop_put_nacked);
116 static ssize_t statistics_write(struct file *file, const char __user *userbuf,
117 size_t count, loff_t *data)
119 memset(&gru_stats, 0, sizeof(gru_stats));
123 static int options_show(struct seq_file *s, void *p)
125 seq_printf(s, "0x%lx\n", gru_options);
129 static ssize_t options_write(struct file *file, const char __user *userbuf,
130 size_t count, loff_t *data)
136 (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
138 if (!strict_strtoul(buf, 10, &val))
144 static int cch_seq_show(struct seq_file *file, void *data)
146 long gid = *(long *)data;
148 struct gru_state *gru = GID_TO_GRU(gid);
149 struct gru_thread_state *ts;
150 const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
153 seq_printf(file, "#%5s%5s%6s%9s%6s%8s%8s\n", "gid", "bid",
154 "ctx#", "pid", "cbrs", "dsbytes", "mode");
156 for (i = 0; i < GRU_NUM_CCH; i++) {
160 seq_printf(file, " %5d%5d%6d%9d%6d%8d%8s\n",
161 gru->gs_gid, gru->gs_blade_id, i,
163 ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
164 ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
165 mode[ts->ts_user_options &
172 static int gru_seq_show(struct seq_file *file, void *data)
174 long gid = *(long *)data, ctxfree, cbrfree, dsrfree;
175 struct gru_state *gru = GID_TO_GRU(gid);
178 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
179 "ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
180 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
181 "busy", "busy", "free", "free", "free");
184 ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
185 cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
186 dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
187 seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
188 gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
189 GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
190 ctxfree, cbrfree, dsrfree);
196 static void seq_stop(struct seq_file *file, void *data)
200 static void *seq_start(struct seq_file *file, loff_t *gid)
202 if (*gid < GRU_MAX_GRUS)
207 static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
210 if (*gid < GRU_MAX_GRUS)
215 static const struct seq_operations cch_seq_ops = {
222 static const struct seq_operations gru_seq_ops = {
229 static int statistics_open(struct inode *inode, struct file *file)
231 return single_open(file, statistics_show, NULL);
234 static int options_open(struct inode *inode, struct file *file)
236 return single_open(file, options_show, NULL);
239 static int cch_open(struct inode *inode, struct file *file)
241 return seq_open(file, &cch_seq_ops);
244 static int gru_open(struct inode *inode, struct file *file)
246 return seq_open(file, &gru_seq_ops);
250 static const struct file_operations statistics_fops = {
251 .open = statistics_open,
253 .write = statistics_write,
255 .release = single_release,
258 static const struct file_operations options_fops = {
259 .open = options_open,
261 .write = options_write,
263 .release = single_release,
266 static const struct file_operations cch_fops = {
270 .release = seq_release,
272 static const struct file_operations gru_fops = {
276 .release = seq_release,
279 static struct proc_entry {
282 const struct file_operations *fops;
283 struct proc_dir_entry *entry;
285 {"statistics", 0644, &statistics_fops},
286 {"debug_options", 0644, &options_fops},
287 {"cch_status", 0444, &cch_fops},
288 {"gru_status", 0444, &gru_fops},
293 static struct proc_dir_entry *proc_gru __read_mostly;
295 static int create_proc_file(struct proc_entry *p)
297 p->entry = create_proc_entry(p->name, p->mode, proc_gru);
300 p->entry->proc_fops = p->fops;
304 static void delete_proc_files(void)
306 struct proc_entry *p;
309 for (p = proc_files; p->name; p++)
311 remove_proc_entry(p->name, proc_gru);
312 remove_proc_entry("gru", NULL);
316 int gru_proc_init(void)
318 struct proc_entry *p;
320 proc_gru = proc_mkdir("sgi_uv/gru", NULL);
322 for (p = proc_files; p->name; p++)
323 if (create_proc_file(p))
332 void gru_proc_exit(void)