| kern_sx.c (303953) | kern_sx.c (315339) |
|---|---|
| 1/*- 2 * Copyright (c) 2007 Attilio Rao <attilio@freebsd.org> 3 * Copyright (c) 2001 Jason Evans <jasone@freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 27 unchanged lines hidden (view full) --- 36 * so should not be relied upon in combination with sx locks. 37 */ 38 39#include "opt_ddb.h" 40#include "opt_hwpmc_hooks.h" 41#include "opt_no_adaptive_sx.h" 42 43#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2007 Attilio Rao <attilio@freebsd.org> 3 * Copyright (c) 2001 Jason Evans <jasone@freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 27 unchanged lines hidden (view full) --- 36 * so should not be relied upon in combination with sx locks. 37 */ 38 39#include "opt_ddb.h" 40#include "opt_hwpmc_hooks.h" 41#include "opt_no_adaptive_sx.h" 42 43#include <sys/cdefs.h> |
| 44__FBSDID("$FreeBSD: stable/11/sys/kern/kern_sx.c 303953 2016-08-11 09:28:49Z mjg $"); | 44__FBSDID("$FreeBSD: stable/11/sys/kern/kern_sx.c 315339 2017-03-16 00:51:24Z mjg $"); |
| 45 46#include <sys/param.h> 47#include <sys/systm.h> 48#include <sys/kdb.h> 49#include <sys/kernel.h> 50#include <sys/ktr.h> 51#include <sys/lock.h> 52#include <sys/mutex.h> --- 90 unchanged lines hidden (view full) --- 143 144#ifdef ADAPTIVE_SX 145static u_int asx_retries = 10; 146static u_int asx_loops = 10000; 147static SYSCTL_NODE(_debug, OID_AUTO, sx, CTLFLAG_RD, NULL, "sxlock debugging"); 148SYSCTL_UINT(_debug_sx, OID_AUTO, retries, CTLFLAG_RW, &asx_retries, 0, ""); 149SYSCTL_UINT(_debug_sx, OID_AUTO, loops, CTLFLAG_RW, &asx_loops, 0, ""); 150 | 45 46#include <sys/param.h> 47#include <sys/systm.h> 48#include <sys/kdb.h> 49#include <sys/kernel.h> 50#include <sys/ktr.h> 51#include <sys/lock.h> 52#include <sys/mutex.h> --- 90 unchanged lines hidden (view full) --- 143 144#ifdef ADAPTIVE_SX 145static u_int asx_retries = 10; 146static u_int asx_loops = 10000; 147static SYSCTL_NODE(_debug, OID_AUTO, sx, CTLFLAG_RD, NULL, "sxlock debugging"); 148SYSCTL_UINT(_debug_sx, OID_AUTO, retries, CTLFLAG_RW, &asx_retries, 0, ""); 149SYSCTL_UINT(_debug_sx, OID_AUTO, loops, CTLFLAG_RW, &asx_loops, 0, ""); 150 |
| 151static struct lock_delay_config sx_delay = { 152 .initial = 1000, 153 .step = 500, 154 .min = 100, 155 .max = 5000, 156}; | 151static struct lock_delay_config __read_mostly sx_delay; |
| 157 | 152 |
| 158SYSCTL_INT(_debug_sx, OID_AUTO, delay_initial, CTLFLAG_RW, &sx_delay.initial, | 153SYSCTL_INT(_debug_sx, OID_AUTO, delay_base, CTLFLAG_RW, &sx_delay.base, |
| 159 0, ""); | 154 0, ""); |
| 160SYSCTL_INT(_debug_sx, OID_AUTO, delay_step, CTLFLAG_RW, &sx_delay.step, 161 0, ""); 162SYSCTL_INT(_debug_sx, OID_AUTO, delay_min, CTLFLAG_RW, &sx_delay.min, 163 0, ""); | |
| 164SYSCTL_INT(_debug_sx, OID_AUTO, delay_max, CTLFLAG_RW, &sx_delay.max, 165 0, ""); 166 | 155SYSCTL_INT(_debug_sx, OID_AUTO, delay_max, CTLFLAG_RW, &sx_delay.max, 156 0, ""); 157 |
| 167static void 168sx_delay_sysinit(void *dummy) 169{ 170 171 sx_delay.initial = mp_ncpus * 25; 172 sx_delay.step = (mp_ncpus * 25) / 2; 173 sx_delay.min = mp_ncpus * 5; 174 sx_delay.max = mp_ncpus * 25 * 10; 175} 176LOCK_DELAY_SYSINIT(sx_delay_sysinit); | 158LOCK_DELAY_SYSINIT_DEFAULT(sx_delay); |
| 177#endif 178 179void 180assert_sx(const struct lock_object *lock, int what) 181{ 182 183 sx_assert((const struct sx *)lock, what); 184} --- 1110 unchanged lines hidden --- | 159#endif 160 161void 162assert_sx(const struct lock_object *lock, int what) 163{ 164 165 sx_assert((const struct sx *)lock, what); 166} --- 1110 unchanged lines hidden --- |