diff --git a/Makefile b/Makefile index 9e700c357880..edabe12d00bf 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,6 @@ VERSION = 4 PATCHLEVEL = 9 -SUBLEVEL = 59 +SUBLEVEL = 60 EXTRAVERSION = NAME = Roaring Lionus diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index f13ae153fb24..d2315ffd8f12 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -112,8 +112,12 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); #define CORE_DUMP_USE_REGSET #define ELF_EXEC_PAGESIZE 4096 -/* This is the base location for PIE (ET_DYN with INTERP) loads. */ -#define ELF_ET_DYN_BASE 0x400000UL +/* This is the location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) /* When the program starts, a1 contains a pointer to a function to be registered with atexit, as per the SVR4 ABI. A value of 0 means we diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 1fb023076dfc..40a8a94db23b 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -169,7 +169,7 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, #ifdef CONFIG_COMPAT /* PIE load location for compat arm. Must match ARM ELF_ET_DYN_BASE. */ -#define COMPAT_ELF_ET_DYN_BASE 0x000400000UL +#define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 70963c845e96..fc0df0f6fe88 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -601,8 +601,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) break; #endif case KVM_CAP_PPC_HTM: - r = cpu_has_feature(CPU_FTR_TM_COMP) && - is_kvmppc_hv_enabled(kvm); + r = cpu_has_feature(CPU_FTR_TM_COMP) && hv_enabled; break; default: r = 0; diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 08cd0bd3ebe5..3907439417e7 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -825,7 +825,7 @@ uint32_t smu7_get_xclk(struct pp_hwmgr *hwmgr) { uint32_t reference_clock, tmp; struct cgs_display_info info = {0}; - struct cgs_mode_info mode_info; + struct cgs_mode_info mode_info = {0}; info.mode_info = &mode_info; @@ -3718,10 +3718,9 @@ int smu7_program_display_gap(struct pp_hwmgr *hwmgr) uint32_t ref_clock; uint32_t refresh_rate = 0; struct cgs_display_info info = {0}; - struct cgs_mode_info mode_info; + struct cgs_mode_info mode_info = {0}; info.mode_info = &mode_info; - cgs_get_active_displays_info(hwmgr->device, &info); num_active_displays = info.display_count; @@ -3737,6 +3736,7 @@ int smu7_program_display_gap(struct pp_hwmgr *hwmgr) frame_time_in_us = 1000000 / refresh_rate; pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us; + data->frame_time_x2 = frame_time_in_us * 2 / 100; display_gap2 = pre_vbi_time_in_us * (ref_clock / 100); diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 681dce15fbc8..b8c50d883b2c 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -1240,6 +1240,7 @@ static const struct acpi_device_id elan_acpi_id[] = { { "ELAN0605", 0 }, { "ELAN0609", 0 }, { "ELAN060B", 0 }, + { "ELAN0611", 0 }, { "ELAN1000", 0 }, { } }; diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c index abf09ac42ce4..339a0e2d2f86 100644 --- a/drivers/input/tablet/gtco.c +++ b/drivers/input/tablet/gtco.c @@ -230,13 +230,17 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report, /* Walk this report and pull out the info we need */ while (i < length) { - prefix = report[i]; - - /* Skip over prefix */ - i++; + prefix = report[i++]; /* Determine data size and save the data in the proper variable */ - size = PREF_SIZE(prefix); + size = (1U << PREF_SIZE(prefix)) >> 1; + if (i + size > length) { + dev_err(ddev, + "Not enough data (need %d, have %d)\n", + i + size, length); + break; + } + switch (size) { case 1: data = report[i]; @@ -244,8 +248,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report, case 2: data16 = get_unaligned_le16(&report[i]); break; - case 3: - size = 4; + case 4: data32 = get_unaligned_le32(&report[i]); break; } diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c index 68ef0a4cd821..b0c80859f746 100644 --- a/drivers/net/can/sun4i_can.c +++ b/drivers/net/can/sun4i_can.c @@ -342,7 +342,7 @@ static int sun4i_can_start(struct net_device *dev) /* enter the selected mode */ mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR); - if (priv->can.ctrlmode & CAN_CTRLMODE_PRESUME_ACK) + if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) mod_reg_val |= SUN4I_MSEL_LOOPBACK_MODE; else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) mod_reg_val |= SUN4I_MSEL_LISTEN_ONLY_MODE; @@ -811,7 +811,6 @@ static int sun4ican_probe(struct platform_device *pdev) priv->can.ctrlmode_supported = CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_LOOPBACK | - CAN_CTRLMODE_PRESUME_ACK | CAN_CTRLMODE_3_SAMPLES; priv->base = addr; priv->clk = clk; diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index d51e0c401b48..4224e066cb16 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -137,6 +137,7 @@ static inline bool kvaser_is_usbcan(const struct usb_device_id *id) #define CMD_RESET_ERROR_COUNTER 49 #define CMD_TX_ACKNOWLEDGE 50 #define CMD_CAN_ERROR_EVENT 51 +#define CMD_FLUSH_QUEUE_REPLY 68 #define CMD_LEAF_USB_THROTTLE 77 #define CMD_LEAF_LOG_MESSAGE 106 @@ -1301,6 +1302,11 @@ static void kvaser_usb_handle_message(const struct kvaser_usb *dev, goto warn; break; + case CMD_FLUSH_QUEUE_REPLY: + if (dev->family != KVASER_LEAF) + goto warn; + break; + default: warn: dev_warn(dev->udev->dev.parent, "Unhandled message (%d)\n", msg->id); @@ -1609,7 +1615,8 @@ static int kvaser_usb_close(struct net_device *netdev) if (err) netdev_warn(netdev, "Cannot flush queue, error %d\n", err); - if (kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, priv->channel)) + err = kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, priv->channel); + if (err) netdev_warn(netdev, "Cannot reset card, error %d\n", err); err = kvaser_usb_stop_chip(priv); diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index d7da81a875cf..c9af065feb28 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -476,7 +476,10 @@ static const struct i2c_device_id fan53555_id[] = { .name = "fan53555", .driver_data = FAN53555_VENDOR_FAIRCHILD }, { - .name = "syr82x", + .name = "syr827", + .driver_data = FAN53555_VENDOR_SILERGY + }, { + .name = "syr828", .driver_data = FAN53555_VENDOR_SILERGY }, { }, diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index bcc8f3dfd4c4..b3f9243cfed5 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -358,6 +358,8 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) adapter->next_port_scan = jiffies; + adapter->erp_action.adapter = adapter; + if (zfcp_qdio_setup(adapter)) goto failed; @@ -514,6 +516,9 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, port->dev.groups = zfcp_port_attr_groups; port->dev.release = zfcp_port_release; + port->erp_action.adapter = adapter; + port->erp_action.port = port; + if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) { kfree(port); goto err_out; diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 7ccfce559034..3b23d6754598 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -193,9 +193,8 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, atomic_or(ZFCP_STATUS_COMMON_ERP_INUSE, &zfcp_sdev->status); erp_action = &zfcp_sdev->erp_action; - memset(erp_action, 0, sizeof(struct zfcp_erp_action)); - erp_action->port = port; - erp_action->sdev = sdev; + WARN_ON_ONCE(erp_action->port != port); + WARN_ON_ONCE(erp_action->sdev != sdev); if (!(atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; @@ -208,8 +207,8 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, zfcp_erp_action_dismiss_port(port); atomic_or(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status); erp_action = &port->erp_action; - memset(erp_action, 0, sizeof(struct zfcp_erp_action)); - erp_action->port = port; + WARN_ON_ONCE(erp_action->port != port); + WARN_ON_ONCE(erp_action->sdev != NULL); if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; break; @@ -219,7 +218,8 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, zfcp_erp_action_dismiss_adapter(adapter); atomic_or(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status); erp_action = &adapter->erp_action; - memset(erp_action, 0, sizeof(struct zfcp_erp_action)); + WARN_ON_ONCE(erp_action->port != NULL); + WARN_ON_ONCE(erp_action->sdev != NULL); if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; @@ -229,7 +229,11 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, return NULL; } - erp_action->adapter = adapter; + WARN_ON_ONCE(erp_action->adapter != adapter); + memset(&erp_action->list, 0, sizeof(erp_action->list)); + memset(&erp_action->timer, 0, sizeof(erp_action->timer)); + erp_action->step = ZFCP_ERP_STEP_UNINITIALIZED; + erp_action->fsf_req_id = 0; erp_action->action = need; erp_action->status = act_status; diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 9bd9b9a29dfc..a9b8104b982e 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -115,10 +115,15 @@ static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) struct zfcp_unit *unit; int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE; + zfcp_sdev->erp_action.adapter = adapter; + zfcp_sdev->erp_action.sdev = sdev; + port = zfcp_get_port_by_wwpn(adapter, rport->port_name); if (!port) return -ENXIO; + zfcp_sdev->erp_action.port = port; + unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev)); if (unit) put_device(&unit->dev); diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 02dfbc1373e3..184c7db1e0ca 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -837,7 +837,7 @@ sg_fill_request_table(Sg_fd *sfp, sg_req_info_t *rinfo) val = 0; list_for_each_entry(srp, &sfp->rq_list, entry) { - if (val > SG_MAX_QUEUE) + if (val >= SG_MAX_QUEUE) break; rinfo[val].req_state = srp->done + 1; rinfo[val].problem = diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c index 14f9dea3173f..7d629b4e1ecc 100644 --- a/drivers/spi/spi-bcm-qspi.c +++ b/drivers/spi/spi-bcm-qspi.c @@ -1215,7 +1215,7 @@ int bcm_qspi_probe(struct platform_device *pdev, goto qspi_probe_err; } } else { - goto qspi_probe_err; + goto qspi_resource_err; } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "bspi"); @@ -1237,7 +1237,7 @@ int bcm_qspi_probe(struct platform_device *pdev, qspi->base[CHIP_SELECT] = devm_ioremap_resource(dev, res); if (IS_ERR(qspi->base[CHIP_SELECT])) { ret = PTR_ERR(qspi->base[CHIP_SELECT]); - goto qspi_probe_err; + goto qspi_resource_err; } } @@ -1245,7 +1245,7 @@ int bcm_qspi_probe(struct platform_device *pdev, GFP_KERNEL); if (!qspi->dev_ids) { ret = -ENOMEM; - goto qspi_probe_err; + goto qspi_resource_err; } for (val = 0; val < num_irqs; val++) { @@ -1334,8 +1334,9 @@ qspi_reg_err: bcm_qspi_hw_uninit(qspi); clk_disable_unprepare(qspi->clk); qspi_probe_err: - spi_master_put(master); kfree(qspi->dev_ids); +qspi_resource_err: + spi_master_put(master); return ret; } /* probe function to be called by SoC specific platform driver probe */ diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 4a02c5c7df0d..0722f75f1d6a 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -412,15 +412,25 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) GFP_NOWAIT); if (!command) { spin_unlock_irqrestore(&xhci->lock, flags); - xhci_free_command(xhci, cmd); - return -ENOMEM; - + ret = -ENOMEM; + goto cmd_cleanup; + } + + ret = xhci_queue_stop_endpoint(xhci, command, slot_id, + i, suspend); + if (ret) { + spin_unlock_irqrestore(&xhci->lock, flags); + xhci_free_command(xhci, command); + goto cmd_cleanup; } - xhci_queue_stop_endpoint(xhci, command, slot_id, i, - suspend); } } - xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend); + ret = xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend); + if (ret) { + spin_unlock_irqrestore(&xhci->lock, flags); + goto cmd_cleanup; + } + xhci_ring_cmd_db(xhci); spin_unlock_irqrestore(&xhci->lock, flags); @@ -431,6 +441,8 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) xhci_warn(xhci, "Timeout while waiting for stop endpoint command\n"); ret = -ETIME; } + +cmd_cleanup: xhci_free_command(xhci, cmd); return ret; } diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 2ef2b61b69df..79b8ab4c6663 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -1030,6 +1030,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) mutex_unlock(&priv->lock); if (use_ptemod) { + map->pages_vm_start = vma->vm_start; err = apply_to_page_range(vma->vm_mm, vma->vm_start, vma->vm_end - vma->vm_start, find_grant_ptes, map); @@ -1067,7 +1068,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) set_grant_ptes_as_special, NULL); } #endif - map->pages_vm_start = vma->vm_start; } return 0; diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 03951f90ecf7..3e1c136aadb7 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1900,6 +1900,7 @@ static int try_flush_caps(struct inode *inode, u64 *ptid) retry: spin_lock(&ci->i_ceph_lock); if (ci->i_ceph_flags & CEPH_I_NOFLUSH) { + spin_unlock(&ci->i_ceph_lock); dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode); goto out; } @@ -1917,8 +1918,10 @@ retry: mutex_lock(&session->s_mutex); goto retry; } - if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) + if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) { + spin_unlock(&ci->i_ceph_lock); goto out; + } flushing = __mark_caps_flushing(inode, session, true, &flush_tid, &oldest_flush_tid); diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 95c1c8d34539..d4d8ad1ba42e 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -84,11 +84,16 @@ struct ecryptfs_page_crypt_context { static inline struct ecryptfs_auth_tok * ecryptfs_get_encrypted_key_payload_data(struct key *key) { - if (key->type == &key_type_encrypted) - return (struct ecryptfs_auth_tok *) - (&((struct encrypted_key_payload *)key->payload.data[0])->payload_data); - else + struct encrypted_key_payload *payload; + + if (key->type != &key_type_encrypted) return NULL; + + payload = key->payload.data[0]; + if (!payload) + return ERR_PTR(-EKEYREVOKED); + + return (struct ecryptfs_auth_tok *)payload->payload_data; } static inline struct key *ecryptfs_get_encrypted_key(char *sig) @@ -114,12 +119,17 @@ static inline struct ecryptfs_auth_tok * ecryptfs_get_key_payload_data(struct key *key) { struct ecryptfs_auth_tok *auth_tok; + const struct user_key_payload *ukp; auth_tok = ecryptfs_get_encrypted_key_payload_data(key); - if (!auth_tok) - return (struct ecryptfs_auth_tok *)user_key_payload_locked(key)->data; - else + if (auth_tok) return auth_tok; + + ukp = user_key_payload_locked(key); + if (!ukp) + return ERR_PTR(-EKEYREVOKED); + + return (struct ecryptfs_auth_tok *)ukp->data; } #define ECRYPTFS_MAX_KEYSET_SIZE 1024 diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 3cf1546dca82..fa218cd64f74 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -459,7 +459,8 @@ out: * @auth_tok_key: key containing the authentication token * @auth_tok: authentication token * - * Returns zero on valid auth tok; -EINVAL otherwise + * Returns zero on valid auth tok; -EINVAL if the payload is invalid; or + * -EKEYREVOKED if the key was revoked before we acquired its semaphore. */ static int ecryptfs_verify_auth_tok_from_key(struct key *auth_tok_key, @@ -468,6 +469,12 @@ ecryptfs_verify_auth_tok_from_key(struct key *auth_tok_key, int rc = 0; (*auth_tok) = ecryptfs_get_key_payload_data(auth_tok_key); + if (IS_ERR(*auth_tok)) { + rc = PTR_ERR(*auth_tok); + *auth_tok = NULL; + goto out; + } + if (ecryptfs_verify_version((*auth_tok)->version)) { printk(KERN_ERR "Data structure version mismatch. Userspace " "tools must match eCryptfs kernel module with major " diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index fc8ba62d5c31..c9889fdddebd 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1358,7 +1358,8 @@ static int parse_dirplusfile(char *buf, size_t nbytes, struct file *file, */ over = !dir_emit(ctx, dirent->name, dirent->namelen, dirent->ino, dirent->type); - ctx->pos = dirent->off; + if (!over) + ctx->pos = dirent->off; } buf += reclen; diff --git a/include/uapi/linux/spi/spidev.h b/include/uapi/linux/spi/spidev.h index dd5f21e75805..856de39d0b89 100644 --- a/include/uapi/linux/spi/spidev.h +++ b/include/uapi/linux/spi/spidev.h @@ -23,6 +23,7 @@ #define SPIDEV_H #include +#include /* User space versions of kernel symbols for SPI clocking modes, * matching diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c7a317543b62..b1939abf23b4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2618,6 +2618,7 @@ void wake_up_new_task(struct task_struct *p) __set_task_cpu(p, select_task_rq(p, task_cpu(p), SD_BALANCE_FORK, 0)); #endif rq = __task_rq_lock(p, &rf); + update_rq_clock(rq); post_init_entity_util_avg(&p->se); walt_mark_task_starting(p); @@ -3175,7 +3176,9 @@ static void sched_freq_tick_pelt(int cpu) * utilization and to harm its performance the least, request * a jump to a higher OPP as soon as the margin of free capacity * is impacted (specified by capacity_margin). + * Remember CPU utilization in sched_capacity_reqs should be normalised. */ + cpu_utilization = cpu_utilization * SCHED_CAPACITY_SCALE / capacity_orig_of(cpu); set_cfs_cpu_capacity(cpu, true, cpu_utilization); } @@ -3202,7 +3205,9 @@ static void sched_freq_tick_walt(int cpu) * It is likely that the load is growing so we * keep the added margin in our request as an * extra boost. + * Remember CPU utilization in sched_capacity_reqs should be normalised. */ + cpu_utilization = cpu_utilization * SCHED_CAPACITY_SCALE / capacity_orig_of(cpu); set_cfs_cpu_capacity(cpu, true, cpu_utilization); } @@ -3819,6 +3824,7 @@ void rt_mutex_setprio(struct task_struct *p, int prio) BUG_ON(prio > MAX_PRIO); rq = __task_rq_lock(p, &rf); + update_rq_clock(rq); /* * Idle task boosting is a nono in general. There is one @@ -3915,6 +3921,8 @@ void set_user_nice(struct task_struct *p, long nice) * the task might be in the middle of scheduling on another CPU. */ rq = task_rq_lock(p, &rf); + update_rq_clock(rq); + /* * The RT priorities are set via sched_setscheduler(), but we still * allow the 'normal' nice value to be set - but as expected @@ -4347,6 +4355,7 @@ recheck: * runqueue lock must be held. */ rq = task_rq_lock(p, &rf); + update_rq_clock(rq); /* * Changing the policy of the stop threads its a very bad idea @@ -8697,6 +8706,7 @@ static void cpu_cgroup_fork(struct task_struct *task) rq = task_rq_lock(task, &rf); + update_rq_clock(rq); sched_change_group(task, TASK_SET_GROUP); task_rq_unlock(rq, task, &rf); diff --git a/kernel/sched/cpufreq_sched.c b/kernel/sched/cpufreq_sched.c index 1b19f2643f48..b0ef17317846 100644 --- a/kernel/sched/cpufreq_sched.c +++ b/kernel/sched/cpufreq_sched.c @@ -202,7 +202,7 @@ static void update_fdomain_capacity_request(int cpu) } /* Convert the new maximum capacity request into a cpu frequency */ - freq_new = capacity * policy->max >> SCHED_CAPACITY_SHIFT; + freq_new = capacity * policy->cpuinfo.max_freq >> SCHED_CAPACITY_SHIFT; index_new = cpufreq_frequency_table_target(policy, freq_new, CPUFREQ_RELATION_L); freq_new = policy->freq_table[index_new].frequency; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 550fa4cecff8..78eef4f12be9 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4803,7 +4803,7 @@ static void update_capacity_of(int cpu) if (!sched_freq()) return; - /* Convert scale-invariant capacity to cpu. */ + /* Normalize scale-invariant capacity to cpu. */ req_cap = boosted_cpu_util(cpu); req_cap = req_cap * SCHED_CAPACITY_SCALE / capacity_orig_of(cpu); set_cfs_cpu_capacity(cpu, true, req_cap); @@ -4996,7 +4996,7 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags) if (rq->cfs.nr_running) update_capacity_of(cpu_of(rq)); else if (sched_freq()) - set_cfs_cpu_capacity(cpu_of(rq), false, 0); + set_cfs_cpu_capacity(cpu_of(rq), false, 0); /* no normalization required for 0 */ } } @@ -5481,6 +5481,7 @@ struct energy_env { int util_delta; int src_cpu; int dst_cpu; + int trg_cpu; int energy; int payoff; struct task_struct *task; @@ -5497,11 +5498,14 @@ struct energy_env { } cap; }; +static int cpu_util_wake(int cpu, struct task_struct *p); + /* * __cpu_norm_util() returns the cpu util relative to a specific capacity, - * i.e. it's busy ratio, in the range [0..SCHED_LOAD_SCALE] which is useful for - * energy calculations. Using the scale-invariant util returned by - * cpu_util() and approximating scale-invariant util by: + * i.e. it's busy ratio, in the range [0..SCHED_LOAD_SCALE], which is useful for + * energy calculations. + * + * Since util is a scale-invariant utilization defined as: * * util ~ (curr_freq/max_freq)*1024 * capacity_orig/1024 * running_time/time * @@ -5511,34 +5515,32 @@ struct energy_env { * * norm_util = running_time/time ~ util/capacity */ -static unsigned long __cpu_norm_util(int cpu, unsigned long capacity, int delta) +static unsigned long __cpu_norm_util(unsigned long util, unsigned long capacity) { - int util = __cpu_util(cpu, delta); - if (util >= capacity) return SCHED_CAPACITY_SCALE; return (util << SCHED_CAPACITY_SHIFT)/capacity; } -static int calc_util_delta(struct energy_env *eenv, int cpu) +static unsigned long group_max_util(struct energy_env *eenv) { - if (cpu == eenv->src_cpu) - return -eenv->util_delta; - if (cpu == eenv->dst_cpu) - return eenv->util_delta; - return 0; -} - -static -unsigned long group_max_util(struct energy_env *eenv) -{ - int i, delta; unsigned long max_util = 0; + unsigned long util; + int cpu; - for_each_cpu(i, sched_group_cpus(eenv->sg_cap)) { - delta = calc_util_delta(eenv, i); - max_util = max(max_util, __cpu_util(i, delta)); + for_each_cpu(cpu, sched_group_cpus(eenv->sg_cap)) { + util = cpu_util_wake(cpu, eenv->task); + + /* + * If we are looking at the target CPU specified by the eenv, + * then we should add the (estimated) utilization of the task + * assuming we will wake it up on that CPU. + */ + if (unlikely(cpu == eenv->trg_cpu)) + util += eenv->util_delta; + + max_util = max(max_util, util); } return max_util; @@ -5546,44 +5548,56 @@ unsigned long group_max_util(struct energy_env *eenv) /* * group_norm_util() returns the approximated group util relative to it's - * current capacity (busy ratio) in the range [0..SCHED_LOAD_SCALE] for use in - * energy calculations. Since task executions may or may not overlap in time in - * the group the true normalized util is between max(cpu_norm_util(i)) and - * sum(cpu_norm_util(i)) when iterating over all cpus in the group, i. The - * latter is used as the estimate as it leads to a more pessimistic energy + * current capacity (busy ratio), in the range [0..SCHED_LOAD_SCALE], for use + * in energy calculations. + * + * Since task executions may or may not overlap in time in the group the true + * normalized util is between MAX(cpu_norm_util(i)) and SUM(cpu_norm_util(i)) + * when iterating over all CPUs in the group. + * The latter estimate is used as it leads to a more pessimistic energy * estimate (more busy). */ static unsigned long group_norm_util(struct energy_env *eenv, struct sched_group *sg) { - int i, delta; - unsigned long util_sum = 0; unsigned long capacity = sg->sge->cap_states[eenv->cap_idx].cap; + unsigned long util, util_sum = 0; + int cpu; - for_each_cpu(i, sched_group_cpus(sg)) { - delta = calc_util_delta(eenv, i); - util_sum += __cpu_norm_util(i, capacity, delta); + for_each_cpu(cpu, sched_group_cpus(sg)) { + util = cpu_util_wake(cpu, eenv->task); + + /* + * If we are looking at the target CPU specified by the eenv, + * then we should add the (estimated) utilization of the task + * assuming we will wake it up on that CPU. + */ + if (unlikely(cpu == eenv->trg_cpu)) + util += eenv->util_delta; + + util_sum += __cpu_norm_util(util, capacity); } - if (util_sum > SCHED_CAPACITY_SCALE) - return SCHED_CAPACITY_SCALE; - return util_sum; + return min_t(unsigned long, util_sum, SCHED_CAPACITY_SCALE); } static int find_new_capacity(struct energy_env *eenv, const struct sched_group_energy * const sge) { - int idx; + int idx, max_idx = sge->nr_cap_states - 1; unsigned long util = group_max_util(eenv); + /* default is max_cap if we don't find a match */ + eenv->cap_idx = max_idx; + for (idx = 0; idx < sge->nr_cap_states; idx++) { - if (sge->cap_states[idx].cap >= util) + if (sge->cap_states[idx].cap >= util) { + eenv->cap_idx = idx; break; + } } - eenv->cap_idx = idx; - - return idx; + return eenv->cap_idx; } static int group_idle_state(struct energy_env *eenv, struct sched_group *sg) @@ -5706,13 +5720,13 @@ static int sched_group_energy(struct energy_env *eenv) if (sg->group_weight == 1) { /* Remove capacity of src CPU (before task move) */ - if (eenv->util_delta == 0 && + if (eenv->trg_cpu == eenv->src_cpu && cpumask_test_cpu(eenv->src_cpu, sched_group_cpus(sg))) { eenv->cap.before = sg->sge->cap_states[cap_idx].cap; eenv->cap.delta -= eenv->cap.before; } /* Add capacity of dst CPU (after task move) */ - if (eenv->util_delta != 0 && + if (eenv->trg_cpu == eenv->dst_cpu && cpumask_test_cpu(eenv->dst_cpu, sched_group_cpus(sg))) { eenv->cap.after = sg->sge->cap_states[cap_idx].cap; eenv->cap.delta += eenv->cap.after; @@ -5760,6 +5774,8 @@ static inline bool cpu_in_sg(struct sched_group *sg, int cpu) return cpu != -1 && cpumask_test_cpu(cpu, sched_group_cpus(sg)); } +static inline unsigned long task_util(struct task_struct *p); + /* * energy_diff(): Estimate the energy impact of changing the utilization * distribution. eenv specifies the change: utilisation amount, source, and @@ -5775,11 +5791,13 @@ static inline int __energy_diff(struct energy_env *eenv) int diff, margin; struct energy_env eenv_before = { - .util_delta = 0, + .util_delta = task_util(eenv->task), .src_cpu = eenv->src_cpu, .dst_cpu = eenv->dst_cpu, + .trg_cpu = eenv->src_cpu, .nrg = { 0, 0, 0, 0}, .cap = { 0, 0, 0 }, + .task = eenv->task, }; if (eenv->src_cpu == eenv->dst_cpu) @@ -5887,8 +5905,14 @@ energy_diff(struct energy_env *eenv) __energy_diff(eenv); /* Return energy diff when boost margin is 0 */ - if (boost == 0) + if (boost == 0) { + trace_sched_energy_diff(eenv->task, + eenv->src_cpu, eenv->dst_cpu, eenv->util_delta, + eenv->nrg.before, eenv->nrg.after, eenv->nrg.diff, + eenv->cap.before, eenv->cap.after, eenv->cap.delta, + 0, -eenv->nrg.diff); return eenv->nrg.diff; + } /* Compute normalized energy diff */ nrg_delta = normalize_energy(eenv->nrg.diff); @@ -6151,8 +6175,6 @@ boosted_task_util(struct task_struct *task) return util + margin; } -static int cpu_util_wake(int cpu, struct task_struct *p); - static unsigned long capacity_spare_wake(int cpu, struct task_struct *p) { return capacity_orig_of(cpu) - cpu_util_wake(cpu, p); @@ -6161,6 +6183,8 @@ static unsigned long capacity_spare_wake(int cpu, struct task_struct *p) /* * find_idlest_group finds and returns the least busy CPU group within the * domain. + * + * Assumes p is allowed on at least one CPU in sd. */ static struct sched_group * find_idlest_group(struct sched_domain *sd, struct task_struct *p, @@ -6168,16 +6192,21 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, { struct sched_group *idlest = NULL, *group = sd->groups; struct sched_group *most_spare_sg = NULL; - unsigned long min_load = ULONG_MAX, this_load = 0; + unsigned long min_runnable_load = ULONG_MAX; + unsigned long this_runnable_load = ULONG_MAX; + unsigned long min_avg_load = ULONG_MAX, this_avg_load = ULONG_MAX; unsigned long most_spare = 0, this_spare = 0; int load_idx = sd->forkexec_idx; - int imbalance = 100 + (sd->imbalance_pct-100)/2; + int imbalance_scale = 100 + (sd->imbalance_pct-100)/2; + unsigned long imbalance = scale_load_down(NICE_0_LOAD) * + (sd->imbalance_pct-100) / 100; if (sd_flag & SD_BALANCE_WAKE) load_idx = sd->wake_idx; do { - unsigned long load, avg_load, spare_cap, max_spare_cap; + unsigned long load, avg_load, runnable_load; + unsigned long spare_cap, max_spare_cap; int local_group; int i; @@ -6194,6 +6223,7 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, * the group containing the CPU with most spare capacity. */ avg_load = 0; + runnable_load = 0; max_spare_cap = 0; for_each_cpu(i, sched_group_cpus(group)) { @@ -6203,7 +6233,9 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, else load = target_load(i, load_idx); - avg_load += load; + runnable_load += load; + + avg_load += cfs_rq_load_avg(&cpu_rq(i)->cfs); spare_cap = capacity_spare_wake(i, p); @@ -6212,14 +6244,32 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, } /* Adjust by relative CPU capacity of the group */ - avg_load = (avg_load * SCHED_CAPACITY_SCALE) / group->sgc->capacity; + avg_load = (avg_load * SCHED_CAPACITY_SCALE) / + group->sgc->capacity; + runnable_load = (runnable_load * SCHED_CAPACITY_SCALE) / + group->sgc->capacity; if (local_group) { - this_load = avg_load; + this_runnable_load = runnable_load; + this_avg_load = avg_load; this_spare = max_spare_cap; } else { - if (avg_load < min_load) { - min_load = avg_load; + if (min_runnable_load > (runnable_load + imbalance)) { + /* + * The runnable load is significantly smaller + * so we can pick this new cpu + */ + min_runnable_load = runnable_load; + min_avg_load = avg_load; + idlest = group; + } else if ((runnable_load < (min_runnable_load + imbalance)) && + (100*min_avg_load > imbalance_scale*avg_load)) { + /* + * The runnable loads are close so we take + * into account blocked load through avg_load + * which is blocked + runnable load + */ + min_avg_load = avg_load; idlest = group; } @@ -6236,23 +6286,32 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, * utilized systems if we require spare_capacity > task_util(p), * so we allow for some task stuffing by using * spare_capacity > task_util(p)/2. + * spare capacity can't be used for fork because the utilization has + * not been set yet as it need to get a rq to init the utilization */ + if (sd_flag & SD_BALANCE_FORK) + goto skip_spare; + if (this_spare > task_util(p) / 2 && - imbalance*this_spare > 100*most_spare) + imbalance_scale*this_spare > 100*most_spare) return NULL; else if (most_spare > task_util(p) / 2) return most_spare_sg; - if (!idlest || 100*this_load < imbalance*min_load) +skip_spare: + if (!idlest || + (min_runnable_load > (this_runnable_load + imbalance)) || + ((this_runnable_load < (min_runnable_load + imbalance)) && + (100*this_avg_load < imbalance_scale*min_avg_load))) return NULL; return idlest; } /* - * find_idlest_cpu - find the idlest cpu among the cpus in group. + * find_idlest_group_cpu - find the idlest cpu among the cpus in group. */ static int -find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu) +find_idlest_group_cpu(struct sched_group *group, struct task_struct *p, int this_cpu) { unsigned long load, min_load = ULONG_MAX; unsigned int min_exit_latency = UINT_MAX; @@ -6301,6 +6360,68 @@ find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu) return shallowest_idle_cpu != -1 ? shallowest_idle_cpu : least_loaded_cpu; } +static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p, + int cpu, int prev_cpu, int sd_flag) +{ + int wu = sd_flag & SD_BALANCE_WAKE; + int cas_cpu = -1; + int new_cpu = cpu; + + if (wu) { + schedstat_inc(p->se.statistics.nr_wakeups_cas_attempts); + schedstat_inc(this_rq()->eas_stats.cas_attempts); + } + + if (!cpumask_intersects(sched_domain_span(sd), &p->cpus_allowed)) + return prev_cpu; + + while (sd) { + struct sched_group *group; + struct sched_domain *tmp; + int weight; + + if (wu) + schedstat_inc(sd->eas_stats.cas_attempts); + + if (!(sd->flags & sd_flag)) { + sd = sd->child; + continue; + } + + group = find_idlest_group(sd, p, cpu, sd_flag); + if (!group) { + sd = sd->child; + continue; + } + + new_cpu = find_idlest_group_cpu(group, p, cpu); + if (new_cpu == cpu) { + /* Now try balancing at a lower domain level of cpu */ + sd = sd->child; + continue; + } + + /* Now try balancing at a lower domain level of new_cpu */ + cpu = cas_cpu = new_cpu; + weight = sd->span_weight; + sd = NULL; + for_each_domain(cpu, tmp) { + if (weight <= tmp->span_weight) + break; + if (tmp->flags & sd_flag) + sd = tmp; + } + /* while loop will break here if sd == NULL */ + } + + if (wu && (cas_cpu >= 0)) { + schedstat_inc(p->se.statistics.nr_wakeups_cas_count); + schedstat_inc(this_rq()->eas_stats.cas_count); + } + + return new_cpu; +} + #ifdef CONFIG_SCHED_SMT static inline void set_idle_cores(int cpu, int val) @@ -6605,9 +6726,6 @@ static int start_cpu(bool boosted) { struct root_domain *rd = cpu_rq(smp_processor_id())->rd; - RCU_LOCKDEP_WARN(rcu_read_lock_sched_held(), - "sched RCU must be held"); - return boosted ? rd->max_cap_orig_cpu : rd->min_cap_orig_cpu; } @@ -6757,6 +6875,19 @@ static inline int find_best_target(struct task_struct *p, int *backup_cpu, continue; } + /* + * Enforce EAS mode + * + * For non latency sensitive tasks, skip CPUs that + * will be overutilized by moving the task there. + * + * The goal here is to remain in EAS mode as long as + * possible at least for !prefer_idle tasks. + */ + if ((new_util * capacity_margin) > + (capacity_orig * SCHED_CAPACITY_SCALE)) + continue; + /* * Case B) Non latency sensitive tasks on IDLE CPUs. * @@ -6953,6 +7084,7 @@ static int select_energy_cpu_brute(struct task_struct *p, int prev_cpu, int sync .src_cpu = prev_cpu, .dst_cpu = target_cpu, .task = p, + .trg_cpu = target_cpu, }; /* Not enough spare capacity on previous cpu */ @@ -6966,7 +7098,10 @@ static int select_energy_cpu_brute(struct task_struct *p, int prev_cpu, int sync /* No energy saving for target_cpu, try backup */ target_cpu = tmp_backup; eenv.dst_cpu = target_cpu; - if (tmp_backup < 0 || energy_diff(&eenv) >= 0) { + eenv.trg_cpu = target_cpu; + if (tmp_backup < 0 || + tmp_backup == prev_cpu || + energy_diff(&eenv) >= 0) { schedstat_inc(p->se.statistics.nr_wakeups_secb_no_nrg_sav); schedstat_inc(this_rq()->eas_stats.secb_no_nrg_sav); target_cpu = prev_cpu; @@ -7044,62 +7179,21 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f new_cpu = cpu; } + if (sd && !(sd_flag & SD_BALANCE_FORK)) { + /* + * We're going to need the task's util for capacity_spare_wake + * in find_idlest_group. Sync it up to prev_cpu's + * last_update_time. + */ + sync_entity_load_avg(&p->se); + } + if (!sd) { if (sd_flag & SD_BALANCE_WAKE) /* XXX always ? */ new_cpu = select_idle_sibling(p, prev_cpu, new_cpu); } else { - int wu = sd_flag & SD_BALANCE_WAKE; - int cas_cpu = -1; - - if (wu) { - schedstat_inc(p->se.statistics.nr_wakeups_cas_attempts); - schedstat_inc(this_rq()->eas_stats.cas_attempts); - } - - - while (sd) { - struct sched_group *group; - int weight; - - if (wu) - schedstat_inc(sd->eas_stats.cas_attempts); - - if (!(sd->flags & sd_flag)) { - sd = sd->child; - continue; - } - - group = find_idlest_group(sd, p, cpu, sd_flag); - if (!group) { - sd = sd->child; - continue; - } - - new_cpu = find_idlest_cpu(group, p, cpu); - if (new_cpu == -1 || new_cpu == cpu) { - /* Now try balancing at a lower domain level of cpu */ - sd = sd->child; - continue; - } - - /* Now try balancing at a lower domain level of new_cpu */ - cpu = cas_cpu = new_cpu; - weight = sd->span_weight; - sd = NULL; - for_each_domain(cpu, tmp) { - if (weight <= tmp->span_weight) - break; - if (tmp->flags & sd_flag) - sd = tmp; - } - /* while loop will break here if sd == NULL */ - } - - if (wu && (cas_cpu >= 0)) { - schedstat_inc(p->se.statistics.nr_wakeups_cas_count); - schedstat_inc(this_rq()->eas_stats.cas_count); - } + new_cpu = find_idlest_cpu(sd, p, cpu, prev_cpu, sd_flag); } rcu_read_unlock(); @@ -9077,8 +9171,11 @@ static struct sched_group *find_busiest_group(struct lb_env *env) if (busiest->group_type == group_imbalanced) goto force_balance; - /* SD_BALANCE_NEWIDLE trumps SMP nice when underutilized */ - if (env->idle == CPU_NEWLY_IDLE && group_has_capacity(env, local) && + /* + * When dst_cpu is idle, prevent SMP nice and/or asymmetric group + * capacities from resulting in underutilization due to avg_load. + */ + if (env->idle != CPU_NOT_IDLE && group_has_capacity(env, local) && busiest->group_no_capacity) goto force_balance; @@ -9364,6 +9461,7 @@ redo: more_balance: raw_spin_lock_irqsave(&busiest->lock, flags); + update_rq_clock(busiest); /* * cur_ld_moved - load moved in current iteration @@ -9756,6 +9854,7 @@ static int active_load_balance_cpu_stop(void *data) }; schedstat_inc(sd->alb_count); + update_rq_clock(busiest_rq); p = detach_one_task(&env); if (p) { @@ -10584,7 +10683,8 @@ void online_fair_sched_group(struct task_group *tg) se = tg->se[i]; raw_spin_lock_irq(&rq->lock); - post_init_entity_util_avg(se); + update_rq_clock(rq); + attach_entity_cfs_rq(se); sync_throttle(tg, i); raw_spin_unlock_irq(&rq->lock); } diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 552e6c551dc3..c1884b6f9993 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1667,6 +1667,10 @@ static inline bool sched_freq(void) return static_key_false(&__sched_freq); } +/* + * sched_capacity_reqs expects capacity requests to be normalised. + * All capacities should sum to the range of 0-1024. + */ DECLARE_PER_CPU(struct sched_capacity_reqs, cpu_sched_capacity_reqs); void update_cpu_capacity_request(int cpu, bool request); diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 776dda02e751..296dcca77f33 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -68,6 +68,7 @@ enum { * attach_mutex to avoid changing binding state while * worker_attach_to_pool() is in progress. */ + POOL_MANAGER_ACTIVE = 1 << 0, /* being managed */ POOL_DISASSOCIATED = 1 << 2, /* cpu can't serve workers */ /* worker flags */ @@ -165,7 +166,6 @@ struct worker_pool { /* L: hash of busy workers */ /* see manage_workers() for details on the two manager mutexes */ - struct mutex manager_arb; /* manager arbitration */ struct worker *manager; /* L: purely informational */ struct mutex attach_mutex; /* attach/detach exclusion */ struct list_head workers; /* A: attached workers */ @@ -297,6 +297,7 @@ static struct workqueue_attrs *wq_update_unbound_numa_attrs_buf; static DEFINE_MUTEX(wq_pool_mutex); /* protects pools and workqueues list */ static DEFINE_SPINLOCK(wq_mayday_lock); /* protects wq->maydays list */ +static DECLARE_WAIT_QUEUE_HEAD(wq_manager_wait); /* wait for manager to go away */ static LIST_HEAD(workqueues); /* PR: list of all workqueues */ static bool workqueue_freezing; /* PL: have wqs started freezing? */ @@ -799,7 +800,7 @@ static bool need_to_create_worker(struct worker_pool *pool) /* Do we have too many workers and should some go away? */ static bool too_many_workers(struct worker_pool *pool) { - bool managing = mutex_is_locked(&pool->manager_arb); + bool managing = pool->flags & POOL_MANAGER_ACTIVE; int nr_idle = pool->nr_idle + managing; /* manager is considered idle */ int nr_busy = pool->nr_workers - nr_idle; @@ -1979,24 +1980,17 @@ static bool manage_workers(struct worker *worker) { struct worker_pool *pool = worker->pool; - /* - * Anyone who successfully grabs manager_arb wins the arbitration - * and becomes the manager. mutex_trylock() on pool->manager_arb - * failure while holding pool->lock reliably indicates that someone - * else is managing the pool and the worker which failed trylock - * can proceed to executing work items. This means that anyone - * grabbing manager_arb is responsible for actually performing - * manager duties. If manager_arb is grabbed and released without - * actual management, the pool may stall indefinitely. - */ - if (!mutex_trylock(&pool->manager_arb)) + if (pool->flags & POOL_MANAGER_ACTIVE) return false; + + pool->flags |= POOL_MANAGER_ACTIVE; pool->manager = worker; maybe_create_worker(pool); pool->manager = NULL; - mutex_unlock(&pool->manager_arb); + pool->flags &= ~POOL_MANAGER_ACTIVE; + wake_up(&wq_manager_wait); return true; } @@ -3203,7 +3197,6 @@ static int init_worker_pool(struct worker_pool *pool) setup_timer(&pool->mayday_timer, pool_mayday_timeout, (unsigned long)pool); - mutex_init(&pool->manager_arb); mutex_init(&pool->attach_mutex); INIT_LIST_HEAD(&pool->workers); @@ -3273,13 +3266,15 @@ static void put_unbound_pool(struct worker_pool *pool) hash_del(&pool->hash_node); /* - * Become the manager and destroy all workers. Grabbing - * manager_arb prevents @pool's workers from blocking on - * attach_mutex. + * Become the manager and destroy all workers. This prevents + * @pool's workers from blocking on attach_mutex. We're the last + * manager and @pool gets freed with the flag set. */ - mutex_lock(&pool->manager_arb); - spin_lock_irq(&pool->lock); + wait_event_lock_irq(wq_manager_wait, + !(pool->flags & POOL_MANAGER_ACTIVE), pool->lock); + pool->flags |= POOL_MANAGER_ACTIVE; + while ((worker = first_idle_worker(pool))) destroy_worker(worker); WARN_ON(pool->nr_workers || pool->nr_idle); @@ -3293,8 +3288,6 @@ static void put_unbound_pool(struct worker_pool *pool) if (pool->detach_completion) wait_for_completion(pool->detach_completion); - mutex_unlock(&pool->manager_arb); - /* shut down the timers */ del_timer_sync(&pool->idle_timer); del_timer_sync(&pool->mayday_timer); diff --git a/lib/assoc_array.c b/lib/assoc_array.c index 59fd7c0b119c..5cd093589c5a 100644 --- a/lib/assoc_array.c +++ b/lib/assoc_array.c @@ -598,21 +598,31 @@ static bool assoc_array_insert_into_terminal_node(struct assoc_array_edit *edit, if ((edit->segment_cache[ASSOC_ARRAY_FAN_OUT] ^ base_seg) == 0) goto all_leaves_cluster_together; - /* Otherwise we can just insert a new node ahead of the old - * one. + /* Otherwise all the old leaves cluster in the same slot, but + * the new leaf wants to go into a different slot - so we + * create a new node (n0) to hold the new leaf and a pointer to + * a new node (n1) holding all the old leaves. + * + * This can be done by falling through to the node splitting + * path. */ - goto present_leaves_cluster_but_not_new_leaf; + pr_devel("present leaves cluster but not new leaf\n"); } split_node: pr_devel("split node\n"); - /* We need to split the current node; we know that the node doesn't - * simply contain a full set of leaves that cluster together (it - * contains meta pointers and/or non-clustering leaves). + /* We need to split the current node. The node must contain anything + * from a single leaf (in the one leaf case, this leaf will cluster + * with the new leaf) and the rest meta-pointers, to all leaves, some + * of which may cluster. + * + * It won't contain the case in which all the current leaves plus the + * new leaves want to cluster in the same slot. * * We need to expel at least two leaves out of a set consisting of the - * leaves in the node and the new leaf. + * leaves in the node and the new leaf. The current meta pointers can + * just be copied as they shouldn't cluster with any of the leaves. * * We need a new node (n0) to replace the current one and a new node to * take the expelled nodes (n1). @@ -717,33 +727,6 @@ found_slot_for_multiple_occupancy: pr_devel("<--%s() = ok [split node]\n", __func__); return true; -present_leaves_cluster_but_not_new_leaf: - /* All the old leaves cluster in the same slot, but the new leaf wants - * to go into a different slot, so we create a new node to hold the new - * leaf and a pointer to a new node holding all the old leaves. - */ - pr_devel("present leaves cluster but not new leaf\n"); - - new_n0->back_pointer = node->back_pointer; - new_n0->parent_slot = node->parent_slot; - new_n0->nr_leaves_on_branch = node->nr_leaves_on_branch; - new_n1->back_pointer = assoc_array_node_to_ptr(new_n0); - new_n1->parent_slot = edit->segment_cache[0]; - new_n1->nr_leaves_on_branch = node->nr_leaves_on_branch; - edit->adjust_count_on = new_n0; - - for (i = 0; i < ASSOC_ARRAY_FAN_OUT; i++) - new_n1->slots[i] = node->slots[i]; - - new_n0->slots[edit->segment_cache[0]] = assoc_array_node_to_ptr(new_n0); - edit->leaf_p = &new_n0->slots[edit->segment_cache[ASSOC_ARRAY_FAN_OUT]]; - - edit->set[0].ptr = &assoc_array_ptr_to_node(node->back_pointer)->slots[node->parent_slot]; - edit->set[0].to = assoc_array_node_to_ptr(new_n0); - edit->excised_meta[0] = assoc_array_node_to_ptr(node); - pr_devel("<--%s() = ok [insert node before]\n", __func__); - return true; - all_leaves_cluster_together: /* All the leaves, new and old, want to cluster together in this node * in the same slot, so we have to replace this node with a shortcut to diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 35cc1de85dcc..6fd24f6435c3 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -505,11 +505,6 @@ static int cfg80211_sme_connect(struct wireless_dev *wdev, return -EOPNOTSUPP; if (wdev->current_bss) { - if (!prev_bssid) - return -EALREADY; - if (prev_bssid && - !ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid)) - return -ENOTCONN; cfg80211_unhold_bss(wdev->current_bss); cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); wdev->current_bss = NULL; @@ -1025,11 +1020,35 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev, ASSERT_WDEV_LOCK(wdev); - if (WARN_ON(wdev->connect_keys)) { - kzfree(wdev->connect_keys); - wdev->connect_keys = NULL; + /* + * If we have an ssid_len, we're trying to connect or are + * already connected, so reject a new SSID unless it's the + * same (which is the case for re-association.) + */ + if (wdev->ssid_len && + (wdev->ssid_len != connect->ssid_len || + memcmp(wdev->ssid, connect->ssid, wdev->ssid_len))) + return -EALREADY; + + /* + * If connected, reject (re-)association unless prev_bssid + * matches the current BSSID. + */ + if (wdev->current_bss) { + if (!prev_bssid) + return -EALREADY; + if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid)) + return -ENOTCONN; } + /* + * Reject if we're in the process of connecting with WEP, + * this case isn't very interesting and trying to handle + * it would make the code much more complex. + */ + if (wdev->connect_keys) + return -EINPROGRESS; + cfg80211_oper_and_ht_capa(&connect->ht_capa_mask, rdev->wiphy.ht_capa_mod_mask); @@ -1080,7 +1099,12 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev, if (err) { wdev->connect_keys = NULL; - wdev->ssid_len = 0; + /* + * This could be reassoc getting refused, don't clear + * ssid_len in that case. + */ + if (!wdev->current_bss) + wdev->ssid_len = 0; return err; } @@ -1105,5 +1129,13 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev, else if (wdev->current_bss) err = rdev_disconnect(rdev, dev, reason); + /* + * Clear ssid_len unless we actually were fully connected, + * in which case cfg80211_disconnected() will take care of + * this later. + */ + if (!wdev->current_bss) + wdev->ssid_len = 0; + return err; } diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index ed4f571428a5..2cade0276299 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1664,32 +1664,34 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr static int xfrm_dump_policy_done(struct netlink_callback *cb) { - struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1]; + struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args; struct net *net = sock_net(cb->skb->sk); xfrm_policy_walk_done(walk, net); return 0; } +static int xfrm_dump_policy_start(struct netlink_callback *cb) +{ + struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args; + + BUILD_BUG_ON(sizeof(*walk) > sizeof(cb->args)); + + xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY); + return 0; +} + static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); - struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1]; + struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args; struct xfrm_dump_info info; - BUILD_BUG_ON(sizeof(struct xfrm_policy_walk) > - sizeof(cb->args) - sizeof(cb->args[0])); - info.in_skb = cb->skb; info.out_skb = skb; info.nlmsg_seq = cb->nlh->nlmsg_seq; info.nlmsg_flags = NLM_F_MULTI; - if (!cb->args[0]) { - cb->args[0] = 1; - xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY); - } - (void) xfrm_policy_walk(net, walk, dump_one_policy, &info); return skb->len; @@ -2437,6 +2439,7 @@ static const struct nla_policy xfrma_spd_policy[XFRMA_SPD_MAX+1] = { static const struct xfrm_link { int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **); + int (*start)(struct netlink_callback *); int (*dump)(struct sk_buff *, struct netlink_callback *); int (*done)(struct netlink_callback *); const struct nla_policy *nla_pol; @@ -2450,6 +2453,7 @@ static const struct xfrm_link { [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy }, [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy }, [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy, + .start = xfrm_dump_policy_start, .dump = xfrm_dump_policy, .done = xfrm_dump_policy_done }, [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi }, @@ -2501,6 +2505,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) { struct netlink_dump_control c = { + .start = link->start, .dump = link->dump, .done = link->done, }; diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 6f337f00ba58..fe1d06d50392 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -329,6 +329,7 @@ static void alc_fill_eapd_coef(struct hda_codec *codec) break; case 0x10ec0225: case 0x10ec0233: + case 0x10ec0236: case 0x10ec0255: case 0x10ec0256: case 0x10ec0282: @@ -909,6 +910,7 @@ static struct alc_codec_rename_pci_table rename_pci_tbl[] = { { 0x10ec0275, 0x1028, 0, "ALC3260" }, { 0x10ec0899, 0x1028, 0, "ALC3861" }, { 0x10ec0298, 0x1028, 0, "ALC3266" }, + { 0x10ec0236, 0x1028, 0, "ALC3204" }, { 0x10ec0256, 0x1028, 0, "ALC3246" }, { 0x10ec0225, 0x1028, 0, "ALC3253" }, { 0x10ec0295, 0x1028, 0, "ALC3254" }, @@ -3694,6 +3696,7 @@ static void alc_headset_mode_unplugged(struct hda_codec *codec) alc_process_coef_fw(codec, coef0255_1); alc_process_coef_fw(codec, coef0255); break; + case 0x10ec0236: case 0x10ec0256: alc_process_coef_fw(codec, coef0256); alc_process_coef_fw(codec, coef0255); @@ -3777,6 +3780,7 @@ static void alc_headset_mode_mic_in(struct hda_codec *codec, hda_nid_t hp_pin, switch (codec->core.vendor_id) { + case 0x10ec0236: case 0x10ec0255: case 0x10ec0256: alc_write_coef_idx(codec, 0x45, 0xc489); @@ -3885,6 +3889,7 @@ static void alc_headset_mode_default(struct hda_codec *codec) case 0x10ec0295: alc_process_coef_fw(codec, coef0225); break; + case 0x10ec0236: case 0x10ec0255: case 0x10ec0256: alc_process_coef_fw(codec, coef0255); @@ -3971,6 +3976,7 @@ static void alc_headset_mode_ctia(struct hda_codec *codec) case 0x10ec0255: alc_process_coef_fw(codec, coef0255); break; + case 0x10ec0236: case 0x10ec0256: alc_process_coef_fw(codec, coef0256); break; @@ -4064,6 +4070,7 @@ static void alc_headset_mode_omtp(struct hda_codec *codec) case 0x10ec0255: alc_process_coef_fw(codec, coef0255); break; + case 0x10ec0236: case 0x10ec0256: alc_process_coef_fw(codec, coef0256); break; @@ -4131,6 +4138,7 @@ static void alc_determine_headset_type(struct hda_codec *codec) }; switch (codec->core.vendor_id) { + case 0x10ec0236: case 0x10ec0255: case 0x10ec0256: alc_process_coef_fw(codec, coef0255); @@ -4335,6 +4343,7 @@ static void alc255_set_default_jack_type(struct hda_codec *codec) case 0x10ec0255: alc_process_coef_fw(codec, alc255fw); break; + case 0x10ec0236: case 0x10ec0256: alc_process_coef_fw(codec, alc256fw); break; @@ -5852,6 +5861,14 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = { ALC225_STANDARD_PINS, {0x12, 0xb7a60130}, {0x1b, 0x90170110}), + SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, + {0x12, 0x90a60140}, + {0x14, 0x90170110}, + {0x21, 0x02211020}), + SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, + {0x12, 0x90a60140}, + {0x14, 0x90170150}, + {0x21, 0x02211020}), SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE, {0x14, 0x90170110}, {0x21, 0x02211020}), @@ -6226,6 +6243,7 @@ static int patch_alc269(struct hda_codec *codec) case 0x10ec0255: spec->codec_variant = ALC269_TYPE_ALC255; break; + case 0x10ec0236: case 0x10ec0256: spec->codec_variant = ALC269_TYPE_ALC256; spec->gen.mixer_nid = 0; /* ALC256 does not have any loopback mixer path */ @@ -7205,6 +7223,7 @@ static const struct hda_device_id snd_hda_id_realtek[] = { HDA_CODEC_ENTRY(0x10ec0233, "ALC233", patch_alc269), HDA_CODEC_ENTRY(0x10ec0234, "ALC234", patch_alc269), HDA_CODEC_ENTRY(0x10ec0235, "ALC233", patch_alc269), + HDA_CODEC_ENTRY(0x10ec0236, "ALC236", patch_alc269), HDA_CODEC_ENTRY(0x10ec0255, "ALC255", patch_alc269), HDA_CODEC_ENTRY(0x10ec0256, "ALC256", patch_alc269), HDA_CODEC_ENTRY(0x10ec0260, "ALC260", patch_alc260),