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, intr_mm_lock_failed);
66 printstat(s, call_os);
67 printstat(s, call_os_offnode_reference);
68 printstat(s, call_os_check_for_bug);
69 printstat(s, call_os_wait_queue);
70 printstat(s, user_flush_tlb);
71 printstat(s, user_unload_context);
72 printstat(s, user_exception);
73 printstat(s, set_task_slice);
74 printstat(s, migrate_check);
75 printstat(s, migrated_retarget);
76 printstat(s, migrated_unload);
77 printstat(s, migrated_unload_delay);
78 printstat(s, migrated_nopfn_retarget);
79 printstat(s, migrated_nopfn_unload);
80 printstat(s, tlb_dropin);
81 printstat(s, tlb_dropin_fail_no_asid);
82 printstat(s, tlb_dropin_fail_upm);
83 printstat(s, tlb_dropin_fail_invalid);
84 printstat(s, tlb_dropin_fail_range_active);
85 printstat(s, tlb_dropin_fail_idle);
86 printstat(s, tlb_dropin_fail_fmm);
87 printstat(s, mmu_invalidate_range);
88 printstat(s, mmu_invalidate_page);
89 printstat(s, mmu_clear_flush_young);
90 printstat(s, flush_tlb);
91 printstat(s, flush_tlb_gru);
92 printstat(s, flush_tlb_gru_tgh);
93 printstat(s, flush_tlb_gru_zero_asid);
94 printstat(s, copy_gpa);
95 printstat(s, mesq_receive);
96 printstat(s, mesq_receive_none);
97 printstat(s, mesq_send);
98 printstat(s, mesq_send_failed);
99 printstat(s, mesq_noop);
100 printstat(s, mesq_send_unexpected_error);
101 printstat(s, mesq_send_lb_overflow);
102 printstat(s, mesq_send_qlimit_reached);
103 printstat(s, mesq_send_amo_nacked);
104 printstat(s, mesq_send_put_nacked);
105 printstat(s, mesq_qf_not_full);
106 printstat(s, mesq_qf_locked);
107 printstat(s, mesq_qf_noop_not_full);
108 printstat(s, mesq_qf_switch_head_failed);
109 printstat(s, mesq_qf_unexpected_error);
110 printstat(s, mesq_noop_unexpected_error);
111 printstat(s, mesq_noop_lb_overflow);
112 printstat(s, mesq_noop_qlimit_reached);
113 printstat(s, mesq_noop_amo_nacked);
114 printstat(s, mesq_noop_put_nacked);
118 static ssize_t statistics_write(struct file *file, const char __user *userbuf,
119 size_t count, loff_t *data)
121 memset(&gru_stats, 0, sizeof(gru_stats));
125 static int mcs_statistics_show(struct seq_file *s, void *p)
128 unsigned long total, count, max;
129 static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
130 "cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"};
132 for (op = 0; op < mcsop_last; op++) {
133 count = atomic_long_read(&mcs_op_statistics[op].count);
134 total = atomic_long_read(&mcs_op_statistics[op].total);
135 max = mcs_op_statistics[op].max;
136 seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
137 count ? total / count : 0, max);
142 static ssize_t mcs_statistics_write(struct file *file,
143 const char __user *userbuf, size_t count, loff_t *data)
145 memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
149 static int options_show(struct seq_file *s, void *p)
151 seq_printf(s, "0x%lx\n", gru_options);
155 static ssize_t options_write(struct file *file, const char __user *userbuf,
156 size_t count, loff_t *data)
162 (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
164 buf[count - 1] = '\0';
165 if (!strict_strtoul(buf, 10, &val))
171 static int cch_seq_show(struct seq_file *file, void *data)
173 long gid = *(long *)data;
175 struct gru_state *gru = GID_TO_GRU(gid);
176 struct gru_thread_state *ts;
177 const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
180 seq_printf(file, "#%5s%5s%6s%9s%6s%8s%8s\n", "gid", "bid",
181 "ctx#", "pid", "cbrs", "dsbytes", "mode");
183 for (i = 0; i < GRU_NUM_CCH; i++) {
187 seq_printf(file, " %5d%5d%6d%9d%6d%8d%8s\n",
188 gru->gs_gid, gru->gs_blade_id, i,
190 ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
191 ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
192 mode[ts->ts_user_options &
199 static int gru_seq_show(struct seq_file *file, void *data)
201 long gid = *(long *)data, ctxfree, cbrfree, dsrfree;
202 struct gru_state *gru = GID_TO_GRU(gid);
205 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
206 "ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
207 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
208 "busy", "busy", "free", "free", "free");
211 ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
212 cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
213 dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
214 seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
215 gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
216 GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
217 ctxfree, cbrfree, dsrfree);
223 static void seq_stop(struct seq_file *file, void *data)
227 static void *seq_start(struct seq_file *file, loff_t *gid)
229 if (*gid < gru_max_gids)
234 static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
237 if (*gid < gru_max_gids)
242 static const struct seq_operations cch_seq_ops = {
249 static const struct seq_operations gru_seq_ops = {
256 static int statistics_open(struct inode *inode, struct file *file)
258 return single_open(file, statistics_show, NULL);
261 static int mcs_statistics_open(struct inode *inode, struct file *file)
263 return single_open(file, mcs_statistics_show, NULL);
266 static int options_open(struct inode *inode, struct file *file)
268 return single_open(file, options_show, NULL);
271 static int cch_open(struct inode *inode, struct file *file)
273 return seq_open(file, &cch_seq_ops);
276 static int gru_open(struct inode *inode, struct file *file)
278 return seq_open(file, &gru_seq_ops);
282 static const struct file_operations statistics_fops = {
283 .open = statistics_open,
285 .write = statistics_write,
287 .release = single_release,
290 static const struct file_operations mcs_statistics_fops = {
291 .open = mcs_statistics_open,
293 .write = mcs_statistics_write,
295 .release = single_release,
298 static const struct file_operations options_fops = {
299 .open = options_open,
301 .write = options_write,
303 .release = single_release,
306 static const struct file_operations cch_fops = {
310 .release = seq_release,
312 static const struct file_operations gru_fops = {
316 .release = seq_release,
319 static struct proc_entry {
322 const struct file_operations *fops;
323 struct proc_dir_entry *entry;
325 {"statistics", 0644, &statistics_fops},
326 {"mcs_statistics", 0644, &mcs_statistics_fops},
327 {"debug_options", 0644, &options_fops},
328 {"cch_status", 0444, &cch_fops},
329 {"gru_status", 0444, &gru_fops},
334 static struct proc_dir_entry *proc_gru __read_mostly;
336 static int create_proc_file(struct proc_entry *p)
338 p->entry = create_proc_entry(p->name, p->mode, proc_gru);
341 p->entry->proc_fops = p->fops;
345 static void delete_proc_files(void)
347 struct proc_entry *p;
350 for (p = proc_files; p->name; p++)
352 remove_proc_entry(p->name, proc_gru);
353 remove_proc_entry("gru", NULL);
357 int gru_proc_init(void)
359 struct proc_entry *p;
361 proc_gru = proc_mkdir("sgi_uv/gru", NULL);
363 for (p = proc_files; p->name; p++)
364 if (create_proc_file(p))
373 void gru_proc_exit(void)