+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- * Author: Zach Brown <zab@zabbo.net>
- * Author: Peter J. Braam <braam@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * Lustre 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 Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/smp_lock.h>
-#include <linux/unistd.h>
-#include <net/sock.h>
-#include <linux/uio.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/stat.h>
-#include <linux/list.h>
-#include <asm/uaccess.h>
-#include <asm/segment.h>
-
-#include <linux/proc_fs.h>
-#include <linux/sysctl.h>
-
-# define DEBUG_SUBSYSTEM S_PORTALS
-
-#include <linux/kp30.h>
-#include <asm/div64.h>
-#include "tracefile.h"
-
-static struct ctl_table_header *portals_table_header = NULL;
-extern char debug_file_path[1024];
-extern char portals_upcall[1024];
-
-#define PSDEV_PORTALS (0x100)
-enum {
- PSDEV_DEBUG = 1, /* control debugging */
- PSDEV_SUBSYSTEM_DEBUG, /* control debugging */
- PSDEV_PRINTK, /* force all errors to console */
- PSDEV_CONSOLE, /* allow _any_ messages to console */
- PSDEV_DEBUG_PATH, /* crashdump log location */
- PSDEV_DEBUG_DUMP_PATH, /* crashdump tracelog location */
- PSDEV_PORTALS_UPCALL, /* User mode upcall script */
- PSDEV_PORTALS_MEMUSED, /* bytes currently PORTAL_ALLOCated */
-};
-
-static struct ctl_table portals_table[] = {
- {PSDEV_DEBUG, "debug", &portal_debug, sizeof(int), 0644, NULL,
- &proc_dointvec},
- {PSDEV_SUBSYSTEM_DEBUG, "subsystem_debug", &portal_subsystem_debug,
- sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_PRINTK, "printk", &portal_printk, sizeof(int), 0644, NULL,
- &proc_dointvec},
- {PSDEV_DEBUG_PATH, "debug_path", debug_file_path,
- sizeof(debug_file_path), 0644, NULL, &proc_dostring, &sysctl_string},
- {PSDEV_PORTALS_UPCALL, "upcall", portals_upcall,
- sizeof(portals_upcall), 0644, NULL, &proc_dostring,
- &sysctl_string},
- {PSDEV_PORTALS_MEMUSED, "memused", (int *)&portal_kmemory.counter,
- sizeof(int), 0644, NULL, &proc_dointvec},
- {0}
-};
-
-static struct ctl_table top_table[2] = {
- {PSDEV_PORTALS, "portals", NULL, 0, 0555, portals_table},
- {0}
-};
-
-
-#ifdef PORTALS_PROFILING
-/*
- * profiling stuff. we do this statically for now 'cause its simple,
- * but we could do some tricks with elf sections to have this array
- * automatically built.
- */
-#define def_prof(FOO) [PROF__##FOO] = {#FOO, 0, }
-
-struct prof_ent prof_ents[] = {
- def_prof(our_recvmsg),
- def_prof(our_sendmsg),
- def_prof(socknal_recv),
- def_prof(lib_parse),
- def_prof(conn_list_walk),
- def_prof(memcpy),
- def_prof(lib_finalize),
- def_prof(pingcli_time),
- def_prof(gmnal_send),
- def_prof(gmnal_recv),
-};
-
-EXPORT_SYMBOL(prof_ents);
-
-/*
- * this function is as crazy as the proc filling api
- * requires.
- *
- * buffer: page allocated for us to scribble in. the
- * data returned to the user will be taken from here.
- * *start: address of the pointer that will tell the
- * caller where in buffer the data the user wants is.
- * ppos: offset in the entire /proc file that the user
- * currently wants.
- * wanted: the amount of data the user wants.
- *
- * while going, 'curpos' is the offset in the entire
- * file where we currently are. We only actually
- * start filling buffer when we get to a place in
- * the file that the user cares about.
- *
- * we take care to only sprintf when the user cares because
- * we're holding a lock while we do this.
- *
- * we're smart and know that we generate fixed size lines.
- * we only start writing to the buffer when the user cares.
- * This is unpredictable because we don't snapshot the
- * list between calls that are filling in a file from
- * the list. The list could change mid read and the
- * output will look very weird indeed. oh well.
- */
-
-static int prof_read_proc(char *buffer, char **start, off_t ppos, int wanted,
- int *eof, void *data)
-{
- int len = 0, i;
- int curpos;
- char *header = "Interval Cycles_per (Starts Finishes Total)\n";
- int header_len = strlen(header);
- char *format = "%-15s %.12Ld (%.12d %.12d %.12Ld)";
- int line_len = (15 + 1 + 12 + 2 + 12 + 1 + 12 + 1 + 12 + 1);
-
- *start = buffer;
-
- if (ppos < header_len) {
- int diff = MIN(header_len, wanted);
- memcpy(buffer, header + ppos, diff);
- len += diff;
- ppos += diff;
- }
-
- if (len >= wanted)
- goto out;
-
- curpos = header_len;
-
- for ( i = 0; i < MAX_PROFS ; i++) {
- int copied;
- struct prof_ent *pe = &prof_ents[i];
- long long cycles_per;
- /*
- * find the part of the array that the buffer wants
- */
- if (ppos >= (curpos + line_len)) {
- curpos += line_len;
- continue;
- }
- /* the clever caller split a line */
- if (ppos > curpos) {
- *start = buffer + (ppos - curpos);
- }
-
- if (pe->finishes == 0)
- cycles_per = 0;
- else
- {
- cycles_per = pe->total_cycles;
- do_div (cycles_per, pe->finishes);
- }
-
- copied = sprintf(buffer + len, format, pe->str, cycles_per,
- pe->starts, pe->finishes, pe->total_cycles);
-
- len += copied;
-
- /* pad to line len, -1 for \n */
- if ((copied < line_len-1)) {
- int diff = (line_len-1) - copied;
- memset(buffer + len, ' ', diff);
- len += diff;
- copied += diff;
- }
-
- buffer[len++]= '\n';
-
- /* bail if we have enough */
- if (((buffer + len) - *start) >= wanted)
- break;
-
- curpos += line_len;
- }
-
- /* lameness */
- if (i == MAX_PROFS)
- *eof = 1;
- out:
-
- return MIN(((buffer + len) - *start), wanted);
-}
-
-/*
- * all kids love /proc :/
- */
-static unsigned char basedir[]="net/portals";
-#endif /* PORTALS_PROFILING */
-
-int insert_proc(void)
-{
- struct proc_dir_entry *ent;
-#if PORTALS_PROFILING
- unsigned char dir[128];
-
- if (ARRAY_SIZE(prof_ents) != MAX_PROFS) {
- CERROR("profiling enum and array are out of sync.\n");
- return -1;
- }
-
- /*
- * This is pretty lame. assuming that failure just
- * means that they already existed.
- */
- strcat(dir, basedir);
- create_proc_entry(dir, S_IFDIR, 0);
-
- strcat(dir, "/cycles");
- ent = create_proc_entry(dir, 0, 0);
- if (!ent) {
- CERROR("couldn't register %s?\n", dir);
- return -1;
- }
-
- ent->data = NULL;
- ent->read_proc = prof_read_proc;
-#endif /* PORTALS_PROFILING */
-
-#ifdef CONFIG_SYSCTL
- if (!portals_table_header)
- portals_table_header = register_sysctl_table(top_table, 0);
-#endif
-
- ent = create_proc_entry("sys/portals/dump_kernel", 0, NULL);
- if (ent == NULL) {
- CERROR("couldn't register dump_kernel\n");
- return -1;
- }
- ent->write_proc = trace_dk;
-
- ent = create_proc_entry("sys/portals/daemon_file", 0, NULL);
- if (ent == NULL) {
- CERROR("couldn't register daemon_file\n");
- return -1;
- }
- ent->write_proc = trace_write_daemon_file;
- ent->read_proc = trace_read_daemon_file;
-
- ent = create_proc_entry("sys/portals/debug_mb", 0, NULL);
- if (ent == NULL) {
- CERROR("couldn't register debug_mb\n");
- return -1;
- }
- ent->write_proc = trace_write_debug_mb;
- ent->read_proc = trace_read_debug_mb;
-
- return 0;
-}
-
-void remove_proc(void)
-{
-#if PORTALS_PROFILING
- unsigned char dir[128];
- int end;
-
- dir[0]='\0';
- strcat(dir, basedir);
-
- end = strlen(dir);
-
- strcat(dir, "/cycles");
- remove_proc_entry(dir, 0);
-
- dir[end] = '\0';
- remove_proc_entry(dir, 0);
-#endif /* PORTALS_PROFILING */
-
- remove_proc_entry("sys/portals/dump_kernel", NULL);
- remove_proc_entry("sys/portals/daemon_file", NULL);
- remove_proc_entry("sys/portals/debug_mb", NULL);
-
-#ifdef CONFIG_SYSCTL
- if (portals_table_header)
- unregister_sysctl_table(portals_table_header);
- portals_table_header = NULL;
-#endif
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff