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_user_context);
55 printstat(s, load_kernel_context);
56 printstat(s, lock_kernel_context);
57 printstat(s, unlock_kernel_context);
58 printstat(s, steal_user_context);
59 printstat(s, steal_kernel_context);
60 printstat(s, steal_context_failed);
62 printstat(s, break_cow);
63 printstat(s, asid_new);
64 printstat(s, asid_next);
65 printstat(s, asid_wrap);
66 printstat(s, asid_reuse);
68 printstat(s, intr_mm_lock_failed);
69 printstat(s, call_os);
70 printstat(s, call_os_offnode_reference);
71 printstat(s, call_os_check_for_bug);
72 printstat(s, call_os_wait_queue);
73 printstat(s, user_flush_tlb);
74 printstat(s, user_unload_context);
75 printstat(s, user_exception);
76 printstat(s, set_task_slice);
77 printstat(s, migrate_check);
78 printstat(s, migrated_retarget);
79 printstat(s, migrated_unload);
80 printstat(s, migrated_unload_delay);
81 printstat(s, migrated_nopfn_retarget);
82 printstat(s, migrated_nopfn_unload);
83 printstat(s, tlb_dropin);
84 printstat(s, tlb_dropin_fail_no_asid);
85 printstat(s, tlb_dropin_fail_upm);
86 printstat(s, tlb_dropin_fail_invalid);
87 printstat(s, tlb_dropin_fail_range_active);
88 printstat(s, tlb_dropin_fail_idle);
89 printstat(s, tlb_dropin_fail_fmm);
90 printstat(s, tlb_dropin_fail_no_exception);
91 printstat(s, tlb_dropin_fail_no_exception_war);
92 printstat(s, mmu_invalidate_range);
93 printstat(s, mmu_invalidate_page);
94 printstat(s, mmu_clear_flush_young);
95 printstat(s, flush_tlb);
96 printstat(s, flush_tlb_gru);
97 printstat(s, flush_tlb_gru_tgh);
98 printstat(s, flush_tlb_gru_zero_asid);
99 printstat(s, copy_gpa);
100 printstat(s, mesq_receive);
101 printstat(s, mesq_receive_none);
102 printstat(s, mesq_send);
103 printstat(s, mesq_send_failed);
104 printstat(s, mesq_noop);
105 printstat(s, mesq_send_unexpected_error);
106 printstat(s, mesq_send_lb_overflow);
107 printstat(s, mesq_send_qlimit_reached);
108 printstat(s, mesq_send_amo_nacked);
109 printstat(s, mesq_send_put_nacked);
110 printstat(s, mesq_qf_not_full);
111 printstat(s, mesq_qf_locked);
112 printstat(s, mesq_qf_noop_not_full);
113 printstat(s, mesq_qf_switch_head_failed);
114 printstat(s, mesq_qf_unexpected_error);
115 printstat(s, mesq_noop_unexpected_error);
116 printstat(s, mesq_noop_lb_overflow);
117 printstat(s, mesq_noop_qlimit_reached);
118 printstat(s, mesq_noop_amo_nacked);
119 printstat(s, mesq_noop_put_nacked);
123 static ssize_t statistics_write(struct file *file, const char __user *userbuf,
124 size_t count, loff_t *data)
126 memset(&gru_stats, 0, sizeof(gru_stats));
130 static int mcs_statistics_show(struct seq_file *s, void *p)
133 unsigned long total, count, max;
134 static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
135 "cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"};
137 for (op = 0; op < mcsop_last; op++) {
138 count = atomic_long_read(&mcs_op_statistics[op].count);
139 total = atomic_long_read(&mcs_op_statistics[op].total);
140 max = mcs_op_statistics[op].max;
141 seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
142 count ? total / count : 0, max);
147 static ssize_t mcs_statistics_write(struct file *file,
148 const char __user *userbuf, size_t count, loff_t *data)
150 memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
154 static int options_show(struct seq_file *s, void *p)
156 seq_printf(s, "0x%lx\n", gru_options);
160 static ssize_t options_write(struct file *file, const char __user *userbuf,
161 size_t count, loff_t *data)
166 if (strncpy_from_user(buf, userbuf, sizeof(buf) - 1) < 0)
168 buf[count - 1] = '\0';
169 if (!strict_strtoul(buf, 10, &val))
175 static int cch_seq_show(struct seq_file *file, void *data)
177 long gid = *(long *)data;
179 struct gru_state *gru = GID_TO_GRU(gid);
180 struct gru_thread_state *ts;
181 const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
184 seq_printf(file, "#%5s%5s%6s%9s%6s%8s%8s\n", "gid", "bid",
185 "ctx#", "pid", "cbrs", "dsbytes", "mode");
187 for (i = 0; i < GRU_NUM_CCH; i++) {
191 seq_printf(file, " %5d%5d%6d%9d%6d%8d%8s\n",
192 gru->gs_gid, gru->gs_blade_id, i,
194 ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
195 ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
196 mode[ts->ts_user_options &
203 static int gru_seq_show(struct seq_file *file, void *data)
205 long gid = *(long *)data, ctxfree, cbrfree, dsrfree;
206 struct gru_state *gru = GID_TO_GRU(gid);
209 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
210 "ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
211 seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
212 "busy", "busy", "free", "free", "free");
215 ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
216 cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
217 dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
218 seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
219 gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
220 GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
221 ctxfree, cbrfree, dsrfree);
227 static void seq_stop(struct seq_file *file, void *data)
231 static void *seq_start(struct seq_file *file, loff_t *gid)
233 if (*gid < gru_max_gids)
238 static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
241 if (*gid < gru_max_gids)
246 static const struct seq_operations cch_seq_ops = {
253 static const struct seq_operations gru_seq_ops = {
260 static int statistics_open(struct inode *inode, struct file *file)
262 return single_open(file, statistics_show, NULL);
265 static int mcs_statistics_open(struct inode *inode, struct file *file)
267 return single_open(file, mcs_statistics_show, NULL);
270 static int options_open(struct inode *inode, struct file *file)
272 return single_open(file, options_show, NULL);
275 static int cch_open(struct inode *inode, struct file *file)
277 return seq_open(file, &cch_seq_ops);
280 static int gru_open(struct inode *inode, struct file *file)
282 return seq_open(file, &gru_seq_ops);
286 static const struct file_operations statistics_fops = {
287 .open = statistics_open,
289 .write = statistics_write,
291 .release = single_release,
294 static const struct file_operations mcs_statistics_fops = {
295 .open = mcs_statistics_open,
297 .write = mcs_statistics_write,
299 .release = single_release,
302 static const struct file_operations options_fops = {
303 .open = options_open,
305 .write = options_write,
307 .release = single_release,
310 static const struct file_operations cch_fops = {
314 .release = seq_release,
316 static const struct file_operations gru_fops = {
320 .release = seq_release,
323 static struct proc_entry {
326 const struct file_operations *fops;
327 struct proc_dir_entry *entry;
329 {"statistics", 0644, &statistics_fops},
330 {"mcs_statistics", 0644, &mcs_statistics_fops},
331 {"debug_options", 0644, &options_fops},
332 {"cch_status", 0444, &cch_fops},
333 {"gru_status", 0444, &gru_fops},
338 static struct proc_dir_entry *proc_gru __read_mostly;
340 static int create_proc_file(struct proc_entry *p)
342 p->entry = create_proc_entry(p->name, p->mode, proc_gru);
345 p->entry->proc_fops = p->fops;
349 static void delete_proc_files(void)
351 struct proc_entry *p;
354 for (p = proc_files; p->name; p++)
356 remove_proc_entry(p->name, proc_gru);
357 remove_proc_entry("gru", NULL);
361 int gru_proc_init(void)
363 struct proc_entry *p;
365 proc_gru = proc_mkdir("sgi_uv/gru", NULL);
367 for (p = proc_files; p->name; p++)
368 if (create_proc_file(p))
377 void gru_proc_exit(void)