diff options
Diffstat (limited to 'drivers/misc/sgi-gru/gruprocfs.c')
| -rw-r--r-- | drivers/misc/sgi-gru/gruprocfs.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c new file mode 100644 index 00000000000..533923f83f1 --- /dev/null +++ b/drivers/misc/sgi-gru/gruprocfs.c @@ -0,0 +1,336 @@ +/* + * 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); + + if (val) + 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, vdata_double_alloc); + printstat(s, gts_double_allocate); + printstat(s, assign_context); + printstat(s, assign_context_failed); + printstat(s, free_context); + printstat(s, load_context); + printstat(s, unload_context); + printstat(s, steal_context); + printstat(s, steal_context_failed); + printstat(s, nopfn); + printstat(s, break_cow); + printstat(s, asid_new); + printstat(s, asid_next); + printstat(s, asid_wrap); + printstat(s, asid_reuse); + printstat(s, intr); + printstat(s, call_os); + printstat(s, call_os_check_for_bug); + printstat(s, call_os_wait_queue); + printstat(s, user_flush_tlb); + printstat(s, user_unload_context); + printstat(s, user_exception); + printstat(s, set_task_slice); + printstat(s, migrate_check); + printstat(s, migrated_retarget); + printstat(s, migrated_unload); + printstat(s, migrated_unload_delay); + printstat(s, migrated_nopfn_retarget); + printstat(s, migrated_nopfn_unload); + printstat(s, tlb_dropin); + 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, mmu_invalidate_range); + printstat(s, mmu_invalidate_page); + printstat(s, mmu_clear_flush_young); + 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, 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_not_full); + 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); + 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 options_show(struct seq_file *s, void *p) +{ + 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) +{ + unsigned long val; + char buf[80]; + + if (copy_from_user + (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf))) + return -EFAULT; + if (!strict_strtoul(buf, 10, &val)) + gru_options = val; + + 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%9s%6s%8s%8s\n", "gid", "bid", + "ctx#", "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%9d%6d%8d%8s\n", + gru->gs_gid, gru->gs_blade_id, i, + 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_GRUS) + return gid; + return NULL; +} + +static void *seq_next(struct seq_file *file, void *data, loff_t *gid) +{ + (*gid)++; + if (*gid < GRU_MAX_GRUS) + 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 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 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; + int mode; + const struct file_operations *fops; + struct proc_dir_entry *entry; +} proc_files[] = { + {"statistics", 0644, &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 = create_proc_entry(p->name, p->mode, proc_gru); + if (!p->entry) + return -1; + p->entry->proc_fops = p->fops; + 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); + remove_proc_entry("gru", NULL); + } +} + +int gru_proc_init(void) +{ + struct proc_entry *p; + + proc_mkdir("sgi_uv", NULL); + 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(); +} |