--- /dev/null
+/*
+ * SN Platform GRU Driver
+ *
+ * PROC INTERFACES
+ *
+ * This file supports the /proc interfaces for the GRU driver
+ *
+ * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/proc_fs.h>
+#include <linux/device.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
+#include "gru.h"
+#include "grulib.h"
+#include "grutables.h"
+
+#define printstat(s, f) printstat_val(s, &gru_stats.f, #f)
+
+static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id)
+{
+ unsigned long val = atomic_long_read(v);
+
+ seq_printf(s, "%16lu %s\n", val, id);
+}
+
+static int statistics_show(struct seq_file *s, void *p)
+{
+ printstat(s, vdata_alloc);
+ printstat(s, vdata_free);
+ printstat(s, gts_alloc);
+ printstat(s, gts_free);
+ printstat(s, gms_alloc);
+ printstat(s, gms_free);
+ printstat(s, gts_double_allocate);
+ printstat(s, assign_context);
+ printstat(s, assign_context_failed);
+ printstat(s, free_context);
+ printstat(s, load_user_context);
+ printstat(s, load_kernel_context);
+ printstat(s, lock_kernel_context);
+ printstat(s, unlock_kernel_context);
+ printstat(s, steal_user_context);
+ printstat(s, steal_kernel_context);
+ printstat(s, steal_context_failed);
+ printstat(s, nopfn);
+ printstat(s, asid_new);
+ printstat(s, asid_next);
+ printstat(s, asid_wrap);
+ printstat(s, asid_reuse);
+ printstat(s, intr);
+ printstat(s, intr_cbr);
+ printstat(s, intr_tfh);
+ printstat(s, intr_spurious);
+ printstat(s, intr_mm_lock_failed);
+ printstat(s, call_os);
+ printstat(s, call_os_wait_queue);
+ printstat(s, user_flush_tlb);
+ printstat(s, user_unload_context);
+ printstat(s, user_exception);
+ printstat(s, set_context_option);
+ printstat(s, check_context_retarget_intr);
+ printstat(s, check_context_unload);
+ printstat(s, tlb_dropin);
+ printstat(s, tlb_preload_page);
+ printstat(s, tlb_dropin_fail_no_asid);
+ printstat(s, tlb_dropin_fail_upm);
+ printstat(s, tlb_dropin_fail_invalid);
+ printstat(s, tlb_dropin_fail_range_active);
+ printstat(s, tlb_dropin_fail_idle);
+ printstat(s, tlb_dropin_fail_fmm);
+ printstat(s, tlb_dropin_fail_no_exception);
+ printstat(s, tfh_stale_on_fault);
+ printstat(s, mmu_invalidate_range);
+ printstat(s, mmu_invalidate_page);
+ printstat(s, flush_tlb);
+ printstat(s, flush_tlb_gru);
+ printstat(s, flush_tlb_gru_tgh);
+ printstat(s, flush_tlb_gru_zero_asid);
+ printstat(s, copy_gpa);
+ printstat(s, read_gpa);
+ printstat(s, mesq_receive);
+ printstat(s, mesq_receive_none);
+ printstat(s, mesq_send);
+ printstat(s, mesq_send_failed);
+ printstat(s, mesq_noop);
+ printstat(s, mesq_send_unexpected_error);
+ printstat(s, mesq_send_lb_overflow);
+ printstat(s, mesq_send_qlimit_reached);
+ printstat(s, mesq_send_amo_nacked);
+ printstat(s, mesq_send_put_nacked);
+ printstat(s, mesq_qf_locked);
+ printstat(s, mesq_qf_noop_not_full);
+ printstat(s, mesq_qf_switch_head_failed);
+ printstat(s, mesq_qf_unexpected_error);
+ printstat(s, mesq_noop_unexpected_error);
+ printstat(s, mesq_noop_lb_overflow);
+ printstat(s, mesq_noop_qlimit_reached);
+ printstat(s, mesq_noop_amo_nacked);
+ printstat(s, mesq_noop_put_nacked);
+ printstat(s, mesq_noop_page_overflow);
+ return 0;
+}
+
+static ssize_t statistics_write(struct file *file, const char __user *userbuf,
+ size_t count, loff_t *data)
+{
+ memset(&gru_stats, 0, sizeof(gru_stats));
+ return count;
+}
+
+static int mcs_statistics_show(struct seq_file *s, void *p)
+{
+ int op;
+ unsigned long total, count, max;
+ static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
+ "cch_interrupt_sync", "cch_deallocate", "tfh_write_only",
+ "tfh_write_restart", "tgh_invalidate"};
+
+ seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks");
+ for (op = 0; op < mcsop_last; op++) {
+ count = atomic_long_read(&mcs_op_statistics[op].count);
+ total = atomic_long_read(&mcs_op_statistics[op].total);
+ max = mcs_op_statistics[op].max;
+ seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
+ count ? total / count : 0, max);
+ }
+ return 0;
+}
+
+static ssize_t mcs_statistics_write(struct file *file,
+ const char __user *userbuf, size_t count, loff_t *data)
+{
+ memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
+ return count;
+}
+
+static int options_show(struct seq_file *s, void *p)
+{
+ seq_printf(s, "#bitmask: 1=trace, 2=statistics\n");
+ seq_printf(s, "0x%lx\n", gru_options);
+ return 0;
+}
+
+static ssize_t options_write(struct file *file, const char __user *userbuf,
+ size_t count, loff_t *data)
+{
+ int ret;
+
+ ret = kstrtoul_from_user(userbuf, count, 0, &gru_options);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static int cch_seq_show(struct seq_file *file, void *data)
+{
+ long gid = *(long *)data;
+ int i;
+ struct gru_state *gru = GID_TO_GRU(gid);
+ struct gru_thread_state *ts;
+ const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
+
+ if (gid == 0)
+ seq_printf(file, "#%5s%5s%6s%7s%9s%6s%8s%8s\n", "gid", "bid",
+ "ctx#", "asid", "pid", "cbrs", "dsbytes", "mode");
+ if (gru)
+ for (i = 0; i < GRU_NUM_CCH; i++) {
+ ts = gru->gs_gts[i];
+ if (!ts)
+ continue;
+ seq_printf(file, " %5d%5d%6d%7d%9d%6d%8d%8s\n",
+ gru->gs_gid, gru->gs_blade_id, i,
+ is_kernel_context(ts) ? 0 : ts->ts_gms->ms_asids[gid].mt_asid,
+ is_kernel_context(ts) ? 0 : ts->ts_tgid_owner,
+ ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
+ ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
+ mode[ts->ts_user_options &
+ GRU_OPT_MISS_MASK]);
+ }
+
+ return 0;
+}
+
+static int gru_seq_show(struct seq_file *file, void *data)
+{
+ long gid = *(long *)data, ctxfree, cbrfree, dsrfree;
+ struct gru_state *gru = GID_TO_GRU(gid);
+
+ if (gid == 0) {
+ seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
+ "ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
+ seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
+ "busy", "busy", "free", "free", "free");
+ }
+ if (gru) {
+ ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
+ cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
+ dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
+ seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
+ gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
+ GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
+ ctxfree, cbrfree, dsrfree);
+ }
+
+ return 0;
+}
+
+static void seq_stop(struct seq_file *file, void *data)
+{
+}
+
+static void *seq_start(struct seq_file *file, loff_t *gid)
+{
+ if (*gid < gru_max_gids)
+ return gid;
+ return NULL;
+}
+
+static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
+{
+ (*gid)++;
+ if (*gid < gru_max_gids)
+ return gid;
+ return NULL;
+}
+
+static const struct seq_operations cch_seq_ops = {
+ .start = seq_start,
+ .next = seq_next,
+ .stop = seq_stop,
+ .show = cch_seq_show
+};
+
+static const struct seq_operations gru_seq_ops = {
+ .start = seq_start,
+ .next = seq_next,
+ .stop = seq_stop,
+ .show = gru_seq_show
+};
+
+static int statistics_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, statistics_show, NULL);
+}
+
+static int mcs_statistics_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, mcs_statistics_show, NULL);
+}
+
+static int options_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, options_show, NULL);
+}
+
+static int cch_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &cch_seq_ops);
+}
+
+static int gru_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &gru_seq_ops);
+}
+
+/* *INDENT-OFF* */
+static const struct file_operations statistics_fops = {
+ .open = statistics_open,
+ .read = seq_read,
+ .write = statistics_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations mcs_statistics_fops = {
+ .open = mcs_statistics_open,
+ .read = seq_read,
+ .write = mcs_statistics_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations options_fops = {
+ .open = options_open,
+ .read = seq_read,
+ .write = options_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations cch_fops = {
+ .open = cch_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+static const struct file_operations gru_fops = {
+ .open = gru_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static struct proc_entry {
+ char *name;
+ umode_t mode;
+ const struct file_operations *fops;
+ struct proc_dir_entry *entry;
+} proc_files[] = {
+ {"statistics", 0644, &statistics_fops},
+ {"mcs_statistics", 0644, &mcs_statistics_fops},
+ {"debug_options", 0644, &options_fops},
+ {"cch_status", 0444, &cch_fops},
+ {"gru_status", 0444, &gru_fops},
+ {NULL}
+};
+/* *INDENT-ON* */
+
+static struct proc_dir_entry *proc_gru __read_mostly;
+
+static int create_proc_file(struct proc_entry *p)
+{
+ p->entry = proc_create(p->name, p->mode, proc_gru, p->fops);
+ if (!p->entry)
+ return -1;
+ return 0;
+}
+
+static void delete_proc_files(void)
+{
+ struct proc_entry *p;
+
+ if (proc_gru) {
+ for (p = proc_files; p->name; p++)
+ if (p->entry)
+ remove_proc_entry(p->name, proc_gru);
+ proc_remove(proc_gru);
+ }
+}
+
+int gru_proc_init(void)
+{
+ struct proc_entry *p;
+
+ proc_gru = proc_mkdir("sgi_uv/gru", NULL);
+
+ for (p = proc_files; p->name; p++)
+ if (create_proc_file(p))
+ goto err;
+ return 0;
+
+err:
+ delete_proc_files();
+ return -1;
+}
+
+void gru_proc_exit(void)
+{
+ delete_proc_files();
+}
Code Review / kvmfornfv.git / blobdiff