diff options
34 files changed, 297 insertions, 139 deletions
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 0e99978da3f0..59cca1d6ec54 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -23,9 +23,9 @@ #define ACPI_MADT_GICC_LENGTH \ (acpi_gbl_FADT.header.revision < 6 ? 76 : 80) -#define BAD_MADT_GICC_ENTRY(entry, end) \ - (!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) || \ - (entry)->header.length != ACPI_MADT_GICC_LENGTH) +#define BAD_MADT_GICC_ENTRY(entry, end) \ + (!(entry) || (entry)->header.length != ACPI_MADT_GICC_LENGTH || \ + (unsigned long)(entry) + ACPI_MADT_GICC_LENGTH > (end)) /* Basic configuration for ACPI */ #ifdef CONFIG_ACPI diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c index 4f0e3ebfea4b..c7e3e6387a49 100644 --- a/arch/arm64/kernel/pci.c +++ b/arch/arm64/kernel/pci.c @@ -191,8 +191,10 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) return NULL; root_ops = kzalloc_node(sizeof(*root_ops), GFP_KERNEL, node); - if (!root_ops) + if (!root_ops) { + kfree(ri); return NULL; + } ri->cfg = pci_acpi_setup_ecam_mapping(root); if (!ri->cfg) { diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 7c2947128f58..0480892e97e5 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -74,7 +74,7 @@ static void blkg_free(struct blkcg_gq *blkg) blkcg_policy[i]->pd_free_fn(blkg->pd[i]); if (blkg->blkcg != &blkcg_root) - blk_exit_rl(&blkg->rl); + blk_exit_rl(blkg->q, &blkg->rl); blkg_rwstat_exit(&blkg->stat_ios); blkg_rwstat_exit(&blkg->stat_bytes); diff --git a/block/blk-core.c b/block/blk-core.c index c7068520794b..a7421b772d0e 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -648,13 +648,19 @@ int blk_init_rl(struct request_list *rl, struct request_queue *q, if (!rl->rq_pool) return -ENOMEM; + if (rl != &q->root_rl) + WARN_ON_ONCE(!blk_get_queue(q)); + return 0; } -void blk_exit_rl(struct request_list *rl) +void blk_exit_rl(struct request_queue *q, struct request_list *rl) { - if (rl->rq_pool) + if (rl->rq_pool) { mempool_destroy(rl->rq_pool); + if (rl != &q->root_rl) + blk_put_queue(q); + } } struct request_queue *blk_alloc_queue(gfp_t gfp_mask) diff --git a/block/blk-mq.c b/block/blk-mq.c index f2224ffd225d..1bcccedcc74f 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2641,7 +2641,8 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr) return ret; } -void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues) +static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, + int nr_hw_queues) { struct request_queue *q; @@ -2665,6 +2666,13 @@ void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues) list_for_each_entry(q, &set->tag_list, tag_set_list) blk_mq_unfreeze_queue(q); } + +void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues) +{ + mutex_lock(&set->tag_list_lock); + __blk_mq_update_nr_hw_queues(set, nr_hw_queues); + mutex_unlock(&set->tag_list_lock); +} EXPORT_SYMBOL_GPL(blk_mq_update_nr_hw_queues); /* Enable polling stats and return whether they were already enabled. */ diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 712b018e9f54..283da7fbe034 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -809,7 +809,7 @@ static void blk_release_queue(struct kobject *kobj) blk_free_queue_stats(q->stats); - blk_exit_rl(&q->root_rl); + blk_exit_rl(q, &q->root_rl); if (q->queue_tags) __blk_queue_free_tags(q); diff --git a/block/blk.h b/block/blk.h index 2ed70228e44f..83c8e1100525 100644 --- a/block/blk.h +++ b/block/blk.h @@ -59,7 +59,7 @@ void blk_free_flush_queue(struct blk_flush_queue *q); int blk_init_rl(struct request_list *rl, struct request_queue *q, gfp_t gfp_mask); -void blk_exit_rl(struct request_list *rl); +void blk_exit_rl(struct request_queue *q, struct request_list *rl); void blk_rq_bio_prep(struct request_queue *q, struct request *rq, struct bio *bio); void blk_queue_bypass_start(struct request_queue *q); diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index da69b079725f..b7e9c7feeab2 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -38,9 +38,13 @@ static const u64 cfq_target_latency = (u64)NSEC_PER_SEC * 3/10; /* 300 ms */ static const int cfq_hist_divisor = 4; /* - * offset from end of service tree + * offset from end of queue service tree for idle class */ #define CFQ_IDLE_DELAY (NSEC_PER_SEC / 5) +/* offset from end of group service tree under time slice mode */ +#define CFQ_SLICE_MODE_GROUP_DELAY (NSEC_PER_SEC / 5) +/* offset from end of group service under IOPS mode */ +#define CFQ_IOPS_MODE_GROUP_DELAY (HZ / 5) /* * below this threshold, we consider thinktime immediate @@ -1362,6 +1366,14 @@ cfq_group_service_tree_add(struct cfq_rb_root *st, struct cfq_group *cfqg) cfqg->vfraction = max_t(unsigned, vfr, 1); } +static inline u64 cfq_get_cfqg_vdisktime_delay(struct cfq_data *cfqd) +{ + if (!iops_mode(cfqd)) + return CFQ_SLICE_MODE_GROUP_DELAY; + else + return CFQ_IOPS_MODE_GROUP_DELAY; +} + static void cfq_group_notify_queue_add(struct cfq_data *cfqd, struct cfq_group *cfqg) { @@ -1381,7 +1393,8 @@ cfq_group_notify_queue_add(struct cfq_data *cfqd, struct cfq_group *cfqg) n = rb_last(&st->rb); if (n) { __cfqg = rb_entry_cfqg(n); - cfqg->vdisktime = __cfqg->vdisktime + CFQ_IDLE_DELAY; + cfqg->vdisktime = __cfqg->vdisktime + + cfq_get_cfqg_vdisktime_delay(cfqd); } else cfqg->vdisktime = st->min_vdisktime; cfq_group_service_tree_add(st, cfqg); diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 9a7bb2c29447..f3f191ba8ca4 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -937,14 +937,6 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg) return -ENOSPC; } -/* Reset all properties of an NBD device */ -static void nbd_reset(struct nbd_device *nbd) -{ - nbd->config = NULL; - nbd->tag_set.timeout = 0; - queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue); -} - static void nbd_bdev_reset(struct block_device *bdev) { if (bdev->bd_openers > 1) @@ -1029,7 +1021,11 @@ static void nbd_config_put(struct nbd_device *nbd) } kfree(config->socks); } - nbd_reset(nbd); + kfree(nbd->config); + nbd->config = NULL; + + nbd->tag_set.timeout = 0; + queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue); mutex_unlock(&nbd->config_lock); nbd_put(nbd); @@ -1483,7 +1479,6 @@ static int nbd_dev_add(int index) disk->fops = &nbd_fops; disk->private_data = nbd; sprintf(disk->disk_name, "nbd%d", index); - nbd_reset(nbd); add_disk(disk); nbd_total_devices++; return index; diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 454bf9c34882..c16f74547804 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4023,6 +4023,7 @@ static void rbd_queue_workfn(struct work_struct *work) switch (req_op(rq)) { case REQ_OP_DISCARD: + case REQ_OP_WRITE_ZEROES: op_type = OBJ_OP_DISCARD; break; case REQ_OP_WRITE: @@ -4420,6 +4421,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) q->limits.discard_granularity = segment_size; q->limits.discard_alignment = segment_size; blk_queue_max_discard_sectors(q, segment_size / SECTOR_SIZE); + blk_queue_max_write_zeroes_sectors(q, segment_size / SECTOR_SIZE); if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC)) q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 3e5f52110ea1..213fb837e1c4 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1208,3 +1208,86 @@ int drm_dp_stop_crc(struct drm_dp_aux *aux) return 0; } EXPORT_SYMBOL(drm_dp_stop_crc); + +struct dpcd_quirk { + u8 oui[3]; + bool is_branch; + u32 quirks; +}; + +#define OUI(first, second, third) { (first), (second), (third) } + +static const struct dpcd_quirk dpcd_quirk_list[] = { + /* Analogix 7737 needs reduced M and N at HBR2 link rates */ + { OUI(0x00, 0x22, 0xb9), true, BIT(DP_DPCD_QUIRK_LIMITED_M_N) }, +}; + +#undef OUI + +/* + * Get a bit mask of DPCD quirks for the sink/branch device identified by + * ident. The quirk data is shared but it's up to the drivers to act on the + * data. + * + * For now, only the OUI (first three bytes) is used, but this may be extended + * to device identification string and hardware/firmware revisions later. + */ +static u32 +drm_dp_get_quirks(const struct drm_dp_dpcd_ident *ident, bool is_branch) +{ + const struct dpcd_quirk *quirk; + u32 quirks = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(dpcd_quirk_list); i++) { + quirk = &dpcd_quirk_list[i]; + + if (quirk->is_branch != is_branch) + continue; + + if (memcmp(quirk->oui, ident->oui, sizeof(ident->oui)) != 0) + continue; + + quirks |= quirk->quirks; + } + + return quirks; +} + +/** + * drm_dp_read_desc - read sink/branch descriptor from DPCD + * @aux: DisplayPort AUX channel + * @desc: Device decriptor to fill from DPCD + * @is_branch: true for branch devices, false for sink devices + * + * Read DPCD 0x400 (sink) or 0x500 (branch) into @desc. Also debug log the + * identification. + * + * Returns 0 on success or a negative error code on failure. + */ +int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc, + bool is_branch) +{ + struct drm_dp_dpcd_ident *ident = &desc->ident; + unsigned int offset = is_branch ? DP_BRANCH_OUI : DP_SINK_OUI; + int ret, dev_id_len; + + ret = drm_dp_dpcd_read(aux, offset, ident, sizeof(*ident)); + if (ret < 0) + return ret; + + desc->quirks = drm_dp_get_quirks(ident, is_branch); + + dev_id_len = strnlen(ident->device_id, sizeof(ident->device_id)); + + DRM_DEBUG_KMS("DP %s: OUI %*phD dev-ID %*pE HW-rev %d.%d SW-rev %d.%d quirks 0x%04x\n", + is_branch ? "branch" : "sink", + (int)sizeof(ident->oui), ident->oui, + dev_id_len, ident->device_id, + ident->hw_rev >> 4, ident->hw_rev & 0xf, + ident->sw_major_rev, ident->sw_minor_rev, + desc->quirks); + + return 0; +} +EXPORT_SYMBOL(drm_dp_read_desc); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index c9b0949f6c1a..963f6d4481f7 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -562,7 +562,8 @@ struct intel_link_m_n { void intel_link_compute_m_n(int bpp, int nlanes, int pixel_clock, int link_clock, - struct intel_link_m_n *m_n); + struct intel_link_m_n *m_n, + bool reduce_m_n); /* Interface history: * diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3617927af269..3cabe52a4e3b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6101,7 +6101,7 @@ retry: pipe_config->fdi_lanes = lane; intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock, - link_bw, &pipe_config->fdi_m_n); + link_bw, &pipe_config->fdi_m_n, false); ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config); if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) { @@ -6277,7 +6277,8 @@ intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den) } static void compute_m_n(unsigned int m, unsigned int n, - uint32_t *ret_m, uint32_t *ret_n) + uint32_t *ret_m, uint32_t *ret_n, + bool reduce_m_n) { /* * Reduce M/N as much as possible without loss in precision. Several DP @@ -6285,9 +6286,11 @@ static void compute_m_n(unsigned int m, unsigned int n, * values. The passed in values are more likely to have the least * significant bits zero than M after rounding below, so do this first. */ - while ((m & 1) == 0 && (n & 1) == 0) { - m >>= 1; - n >>= 1; + if (reduce_m_n) { + while ((m & 1) == 0 && (n & 1) == 0) { + m >>= 1; + n >>= 1; + } } *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX); @@ -6298,16 +6301,19 @@ static void compute_m_n(unsigned int m, unsigned int n, void intel_link_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock, int link_clock, - struct intel_link_m_n *m_n) + struct intel_link_m_n *m_n, + bool reduce_m_n) { m_n->tu = 64; compute_m_n(bits_per_pixel * pixel_clock, link_clock * nlanes * 8, - &m_n->gmch_m, &m_n->gmch_n); + &m_n->gmch_m, &m_n->gmch_n, + reduce_m_n); compute_m_n(pixel_clock, link_clock, - &m_n->link_m, &m_n->link_n); + &m_n->link_m, &m_n->link_n, + reduce_m_n); } static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index ee77b519835c..fc691b8b317c 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1507,37 +1507,6 @@ static void intel_dp_print_rates(struct intel_dp *intel_dp) DRM_DEBUG_KMS("common rates: %s\n", str); } -bool -__intel_dp_read_desc(struct intel_dp *intel_dp, struct intel_dp_desc *desc) -{ - u32 base = drm_dp_is_branch(intel_dp->dpcd) ? DP_BRANCH_OUI : - DP_SINK_OUI; - - return drm_dp_dpcd_read(&intel_dp->aux, base, desc, sizeof(*desc)) == - sizeof(*desc); -} - -bool intel_dp_read_desc(struct intel_dp *intel_dp) -{ - struct intel_dp_desc *desc = &intel_dp->desc; - bool oui_sup = intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & - DP_OUI_SUPPORT; - int dev_id_len; - - if (!__intel_dp_read_desc(intel_dp, desc)) - return false; - - dev_id_len = strnlen(desc->device_id, sizeof(desc->device_id)); - DRM_DEBUG_KMS("DP %s: OUI %*phD%s dev-ID %*pE HW-rev %d.%d SW-rev %d.%d\n", - drm_dp_is_branch(intel_dp->dpcd) ? "branch" : "sink", - (int)sizeof(desc->oui), desc->oui, oui_sup ? "" : "(NS)", - dev_id_len, desc->device_id, - desc->hw_rev >> 4, desc->hw_rev & 0xf, - desc->sw_major_rev, desc->sw_minor_rev); - - return true; -} - static int rate_to_index(int find, const int *rates) { int i = 0; @@ -1624,6 +1593,8 @@ intel_dp_compute_config(struct intel_encoder *encoder, int common_rates[DP_MAX_SUPPORTED_RATES] = {}; int common_len; uint8_t link_bw, rate_select; + bool reduce_m_n = drm_dp_has_quirk(&intel_dp->desc, + DP_DPCD_QUIRK_LIMITED_M_N); common_len = intel_dp_common_rates(intel_dp, common_rates); @@ -1753,7 +1724,8 @@ found: intel_link_compute_m_n(bpp, lane_count, adjusted_mode->crtc_clock, pipe_config->port_clock, - &pipe_config->dp_m_n); + &pipe_config->dp_m_n, + reduce_m_n); if (intel_connector->panel.downclock_mode != NULL && dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) { @@ -1761,7 +1733,8 @@ found: intel_link_compute_m_n(bpp, lane_count, intel_connector->panel.downclock_mode->clock, pipe_config->port_clock, - &pipe_config->dp_m2_n2); + &pipe_config->dp_m2_n2, + reduce_m_n); } /* @@ -3622,7 +3595,8 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp) if (!intel_dp_read_dpcd(intel_dp)) return false; - intel_dp_read_desc(intel_dp); + drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc, + drm_dp_is_branch(intel_dp->dpcd)); if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] & @@ -4624,7 +4598,8 @@ intel_dp_long_pulse(struct intel_connector *intel_connector) intel_dp_print_rates(intel_dp); - intel_dp_read_desc(intel_dp); + drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc, + drm_dp_is_branch(intel_dp->dpcd)); intel_dp_configure_mst(intel_dp); diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index c1f62eb07c07..989e25577ac0 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -44,6 +44,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, int lane_count, slots; const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; int mst_pbn; + bool reduce_m_n = drm_dp_has_quirk(&intel_dp->desc, + DP_DPCD_QUIRK_LIMITED_M_N); pipe_config->has_pch_encoder = false; bpp = 24; @@ -75,7 +77,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, intel_link_compute_m_n(bpp, lane_count, adjusted_mode->crtc_clock, pipe_config->port_clock, - &pipe_config->dp_m_n); + &pipe_config->dp_m_n, + reduce_m_n); pipe_config->dp_m_n.tu = slots; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index aaee3949a422..f630c7af5020 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -906,14 +906,6 @@ enum link_m_n_set { M2_N2 }; -struct intel_dp_desc { - u8 oui[3]; - u8 device_id[6]; - u8 hw_rev; - u8 sw_major_rev; - u8 sw_minor_rev; -} __packed; - struct intel_dp_compliance_data { unsigned long edid; uint8_t video_pattern; @@ -957,7 +949,7 @@ struct intel_dp { /* Max link BW for the sink as per DPCD registers */ int max_sink_link_bw; /* sink or branch descriptor */ - struct intel_dp_desc desc; + struct drm_dp_desc desc; struct drm_dp_aux aux; enum intel_display_power_domain aux_power_domain; uint8_t train_set[4]; @@ -1532,9 +1524,6 @@ static inline unsigned int intel_dp_unused_lane_mask(int lane_count) } bool intel_dp_read_dpcd(struct intel_dp *intel_dp); -bool __intel_dp_read_desc(struct intel_dp *intel_dp, - struct intel_dp_desc *desc); -bool intel_dp_read_desc(struct intel_dp *intel_dp); int intel_dp_link_required(int pixel_clock, int bpp); int intel_dp_max_data_rate(int max_link_clock, int max_lanes); bool intel_digital_port_connected(struct drm_i915_private *dev_priv, diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c index 71cbe9c08932..5abef482eacf 100644 --- a/drivers/gpu/drm/i915/intel_lspcon.c +++ b/drivers/gpu/drm/i915/intel_lspcon.c @@ -240,7 +240,7 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port) return false; } - intel_dp_read_desc(dp); + drm_dp_read_desc(&dp->aux, &dp->desc, drm_dp_is_branch(dp->dpcd)); DRM_DEBUG_KMS("Success: LSPCON init\n"); return true; diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index bf7419a56454..f4eace5ea184 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -485,10 +485,10 @@ void bitmap_print_sb(struct bitmap *bitmap) pr_debug(" magic: %08x\n", le32_to_cpu(sb->magic)); pr_debug(" version: %d\n", le32_to_cpu(sb->version)); pr_debug(" uuid: %08x.%08x.%08x.%08x\n", - *(__u32 *)(sb->uuid+0), - *(__u32 *)(sb->uuid+4), - *(__u32 *)(sb->uuid+8), - *(__u32 *)(sb->uuid+12)); + le32_to_cpu(*(__u32 *)(sb->uuid+0)), + le32_to_cpu(*(__u32 *)(sb->uuid+4)), + le32_to_cpu(*(__u32 *)(sb->uuid+8)), + le32_to_cpu(*(__u32 *)(sb->uuid+12))); pr_debug(" events: %llu\n", (unsigned long long) le64_to_cpu(sb->events)); pr_debug("events cleared: %llu\n", diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index cd8139593ccd..840c1496b2b1 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -1334,7 +1334,7 @@ int dm_bufio_issue_flush(struct dm_bufio_client *c) { struct dm_io_request io_req = { .bi_op = REQ_OP_WRITE, - .bi_op_flags = REQ_PREFLUSH, + .bi_op_flags = REQ_PREFLUSH | REQ_SYNC, .mem.type = DM_IO_KMEM, .mem.ptr.addr = NULL, .client = c->dm_io, diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index c7f7c8d76576..7910bfe50da4 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -783,7 +783,8 @@ static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsi for (i = 0; i < commit_sections; i++) rw_section_mac(ic, commit_start + i, true); } - rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, commit_sections, &io_comp); + rw_journal(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, commit_start, + commit_sections, &io_comp); } else { unsigned to_end; io_comp.in_flight = (atomic_t)ATOMIC_INIT(2); @@ -2374,21 +2375,6 @@ static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic) blk_queue_max_integrity_segments(disk->queue, UINT_MAX); } -/* FIXME: use new kvmalloc */ -static void *dm_integrity_kvmalloc(size_t size, gfp_t gfp) -{ - void *ptr = NULL; - - if (size <= PAGE_SIZE) - ptr = kmalloc(size, GFP_KERNEL | gfp); - if (!ptr && size <= KMALLOC_MAX_SIZE) - ptr = kmalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY | gfp); - if (!ptr) - ptr = __vmalloc(size, GFP_KERNEL | gfp, PAGE_KERNEL); - - return ptr; -} - static void dm_integrity_free_page_list(struct dm_integrity_c *ic, struct page_list *pl) { unsigned i; @@ -2407,7 +2393,7 @@ static struct page_list *dm_integrity_alloc_page_list(struct dm_integrity_c *ic) struct page_list *pl; unsigned i; - pl = dm_integrity_kvmalloc(page_list_desc_size, __GFP_ZERO); + pl = kvmalloc(page_list_desc_size, GFP_KERNEL | __GFP_ZERO); if (!pl) return NULL; @@ -2437,7 +2423,7 @@ static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_int struct scatterlist **sl; unsigned i; - sl = dm_integrity_kvmalloc(ic->journal_sections * sizeof(struct scatterlist *), __GFP_ZERO); + sl = kvmalloc(ic->journal_sections * sizeof(struct scatterlist *), GFP_KERNEL | __GFP_ZERO); if (!sl) return NULL; @@ -2453,7 +2439,7 @@ static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_int n_pages = (end_index - start_index + 1); - s = dm_integrity_kvmalloc(n_pages * sizeof(struct scatterlist), 0); + s = kvmalloc(n_pages * sizeof(struct scatterlist), GFP_KERNEL); if (!s) { dm_integrity_free_journal_scatterlist(ic, sl); return NULL; @@ -2617,7 +2603,7 @@ static int create_journal(struct dm_integrity_c *ic, char **error) goto bad; } - sg = dm_integrity_kvmalloc((ic->journal_pages + 1) * sizeof(struct scatterlist), 0); + sg = kvmalloc((ic->journal_pages + 1) * sizeof(struct scatterlist), GFP_KERNEL); if (!sg) { *error = "Unable to allocate sg list"; r = -ENOMEM; @@ -2673,7 +2659,7 @@ static int create_journal(struct dm_integrity_c *ic, char **error) r = -ENOMEM; goto bad; } - ic->sk_requests = dm_integrity_kvmalloc(ic->journal_sections * sizeof(struct skcipher_request *), __GFP_ZERO); + ic->sk_requests = kvmalloc(ic->journal_sections * sizeof(struct skcipher_request *), GFP_KERNEL | __GFP_ZERO); if (!ic->sk_requests) { *error = "Unable to allocate sk requests"; r = -ENOMEM; @@ -2740,7 +2726,7 @@ retest_commit_id: r = -ENOMEM; goto bad; } - ic->journal_tree = dm_integrity_kvmalloc(journal_tree_size, 0); + ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL); if (!ic->journal_tree) { *error = "Could not allocate memory for journal tree"; r = -ENOMEM; diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 0555b4410e05..41852ae287a5 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1710,12 +1710,13 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern } /* - * Try to avoid low memory issues when a device is suspended. + * Use __GFP_HIGH to avoid low memory issues when a device is + * suspended and the ioctl is needed to resume it. * Use kmalloc() rather than vmalloc() when we can. */ dmi = NULL; noio_flag = memalloc_noio_save(); - dmi = kvmalloc(param_kernel->data_size, GFP_KERNEL); + dmi = kvmalloc(param_kernel->data_size, GFP_KERNEL | __GFP_HIGH); memalloc_noio_restore(noio_flag); if (!dmi) { diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index a95cbb80fb34..e61c45047c25 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -260,7 +260,7 @@ static int mirror_flush(struct dm_target *ti) struct mirror *m; struct dm_io_request io_req = { .bi_op = REQ_OP_WRITE, - .bi_op_flags = REQ_PREFLUSH, + .bi_op_flags = REQ_PREFLUSH | REQ_SYNC, .mem.type = DM_IO_KMEM, .mem.ptr.addr = NULL, .client = ms->io_client, diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index b93476c3ba3f..c5534d294773 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -741,7 +741,8 @@ static void persistent_commit_exception(struct dm_exception_store *store, /* * Commit exceptions to disk. */ - if (ps->valid && area_io(ps, REQ_OP_WRITE, REQ_PREFLUSH | REQ_FUA)) + if (ps->valid && area_io(ps, REQ_OP_WRITE, + REQ_PREFLUSH | REQ_FUA | REQ_SYNC)) ps->valid = 0; /* diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index 97de961a3bfc..1ec9b2c51c07 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -166,7 +166,7 @@ static int verity_hash_init(struct dm_verity *v, struct ahash_request *req, return r; } - if (likely(v->version >= 1)) + if (likely(v->salt_size && (v->version >= 1))) r = verity_hash_update(v, req, v->salt, v->salt_size, res); return r; @@ -177,7 +177,7 @@ static int verity_hash_final(struct dm_verity *v, struct ahash_request *req, { int r; - if (unlikely(!v->version)) { + if (unlikely(v->salt_size && (!v->version))) { r = verity_hash_update(v, req, v->salt, v->salt_size, res); if (r < 0) { diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 6ef9500226c0..37ccd73c79ec 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1657,7 +1657,7 @@ static struct mapped_device *alloc_dev(int minor) bio_init(&md->flush_bio, NULL, 0); md->flush_bio.bi_bdev = md->bdev; - md->flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; + md->flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH | REQ_SYNC; dm_stats_init(&md->stats); diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 7299ce2f08a8..03082e17c65c 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -1311,8 +1311,10 @@ static int add_new_disk(struct mddev *mddev, struct md_rdev *rdev) cmsg.raid_slot = cpu_to_le32(rdev->desc_nr); lock_comm(cinfo, 1); ret = __sendmsg(cinfo, &cmsg); - if (ret) + if (ret) { + unlock_comm(cinfo); return ret; + } cinfo->no_new_dev_lockres->flags |= DLM_LKF_NOQUEUE; ret = dlm_lock_sync(cinfo->no_new_dev_lockres, DLM_LOCK_EX); cinfo->no_new_dev_lockres->flags &= ~DLM_LKF_NOQUEUE; diff --git a/drivers/md/md.c b/drivers/md/md.c index 10367ffe92e3..212a6777ff31 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -765,7 +765,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev, test_bit(FailFast, &rdev->flags) && !test_bit(LastDev, &rdev->flags)) ff = MD_FAILFAST; - bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH | REQ_FUA | ff; + bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH | REQ_FUA | ff; atomic_inc(&mddev->pending_writes); submit_bio(bio); diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 4c00bc248287..0a7af8b0a80a 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -1782,7 +1782,7 @@ static int r5l_log_write_empty_meta_block(struct r5l_log *log, sector_t pos, mb->checksum = cpu_to_le32(crc32c_le(log->uuid_checksum, mb, PAGE_SIZE)); if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, REQ_OP_WRITE, - REQ_FUA, false)) { + REQ_SYNC | REQ_FUA, false)) { __free_page(page); return -EIO; } @@ -2388,7 +2388,7 @@ r5c_recovery_rewrite_data_only_stripes(struct r5l_log *log, mb->checksum = cpu_to_le32(crc32c_le(log->uuid_checksum, mb, PAGE_SIZE)); sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, - REQ_OP_WRITE, REQ_FUA, false); + REQ_OP_WRITE, REQ_SYNC | REQ_FUA, false); sh->log_start = ctx->pos; list_add_tail(&sh->r5c, &log->stripe_in_journal_list); atomic_inc(&log->stripe_in_journal_count); diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c index 5d25bebf3328..ccce92e68d7f 100644 --- a/drivers/md/raid5-ppl.c +++ b/drivers/md/raid5-ppl.c @@ -907,8 +907,8 @@ static int ppl_write_empty_header(struct ppl_log *log) pplhdr->checksum = cpu_to_le32(~crc32c_le(~0, pplhdr, PAGE_SIZE)); if (!sync_page_io(rdev, rdev->ppl.sector - rdev->data_offset, - PPL_HEADER_SIZE, page, REQ_OP_WRITE | REQ_FUA, 0, - false)) { + PPL_HEADER_SIZE, page, REQ_OP_WRITE | REQ_SYNC | + REQ_FUA, 0, false)) { md_error(rdev->mddev, rdev); ret = -EIO; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 9c4f7659f8b1..722064689e82 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4085,10 +4085,15 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh, set_bit(STRIPE_INSYNC, &sh->state); else { atomic64_add(STRIPE_SECTORS, &conf->mddev->resync_mismatches); - if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) + if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { /* don't try to repair!! */ set_bit(STRIPE_INSYNC, &sh->state); - else { + pr_warn_ratelimited("%s: mismatch sector in range " + "%llu-%llu\n", mdname(conf->mddev), + (unsigned long long) sh->sector, + (unsigned long long) sh->sector + + STRIPE_SECTORS); + } else { sh->check_state = check_state_compute_run; set_bit(STRIPE_COMPUTE_RUN, &sh->state); set_bit(STRIPE_OP_COMPUTE_BLK, &s->ops_request); @@ -4237,10 +4242,15 @@ static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh, } } else { atomic64_add(STRIPE_SECTORS, &conf->mddev->resync_mismatches); - if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) + if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { /* don't try to repair!! */ set_bit(STRIPE_INSYNC, &sh->state); - else { + pr_warn_ratelimited("%s: mismatch sector in range " + "%llu-%llu\n", mdname(conf->mddev), + (unsigned long long) sh->sector, + (unsigned long long) sh->sector + + STRIPE_SECTORS); + } else { int *target = &sh->ops.target; sh->ops.target = -1; diff --git a/drivers/perf/arm_pmu_acpi.c b/drivers/perf/arm_pmu_acpi.c index 34c862f213c7..0a9b78705ee8 100644 --- a/drivers/perf/arm_pmu_acpi.c +++ b/drivers/perf/arm_pmu_acpi.c @@ -29,6 +29,17 @@ static int arm_pmu_acpi_register_irq(int cpu) return -EINVAL; gsi = gicc->performance_interrupt; + + /* + * Per the ACPI spec, the MADT cannot describe a PMU that doesn't + * have an interrupt. QEMU advertises this by using a GSI of zero, + * which is not known to be valid on any hardware despite being + * valid per the spec. Take the pragmatic approach and reject a + * GSI of zero for now. + */ + if (!gsi) + return 0; + if (gicc->flags & ACPI_MADT_PERFORMANCE_IRQ_MODE) trigger = ACPI_EDGE_SENSITIVE; else diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 62fa39276a24..07b77b73b024 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -97,12 +97,16 @@ static inline void xfs_buf_ioacct_inc( struct xfs_buf *bp) { - if (bp->b_flags & (XBF_NO_IOACCT|_XBF_IN_FLIGHT)) + if (bp->b_flags & XBF_NO_IOACCT) return; ASSERT(bp->b_flags & XBF_ASYNC); - bp->b_flags |= _XBF_IN_FLIGHT; - percpu_counter_inc(&bp->b_target->bt_io_count); + spin_lock(&bp->b_lock); + if (!(bp->b_state & XFS_BSTATE_IN_FLIGHT)) { + bp->b_state |= XFS_BSTATE_IN_FLIGHT; + percpu_counter_inc(&bp->b_target->bt_io_count); + } + spin_unlock(&bp->b_lock); } /* @@ -110,14 +114,24 @@ xfs_buf_ioacct_inc( * freed and unaccount from the buftarg. */ static inline void -xfs_buf_ioacct_dec( +__xfs_buf_ioacct_dec( struct xfs_buf *bp) { - if (!(bp->b_flags & _XBF_IN_FLIGHT)) - return; + ASSERT(spin_is_locked(&bp->b_lock)); - bp->b_flags &= ~_XBF_IN_FLIGHT; - percpu_counter_dec(&bp->b_target->bt_io_count); + if (bp->b_state & XFS_BSTATE_IN_FLIGHT) { + bp->b_state &= ~XFS_BSTATE_IN_FLIGHT; + percpu_counter_dec(&bp->b_target->bt_io_count); + } +} + +static inline void +xfs_buf_ioacct_dec( + struct xfs_buf *bp) +{ + spin_lock(&bp->b_lock); + __xfs_buf_ioacct_dec(bp); + spin_unlock(&bp->b_lock); } /* @@ -149,9 +163,9 @@ xfs_buf_stale( * unaccounted (released to LRU) before that occurs. Drop in-flight * status now to preserve accounting consistency. */ - xfs_buf_ioacct_dec(bp); - spin_lock(&bp->b_lock); + __xfs_buf_ioacct_dec(bp); + atomic_set(&bp->b_lru_ref, 0); if (!(bp->b_state & XFS_BSTATE_DISPOSE) && (list_lru_del(&bp->b_target->bt_lru, &bp->b_lru))) @@ -979,12 +993,12 @@ xfs_buf_rele( * ensures the decrement occurs only once per-buf. */ if ((atomic_read(&bp->b_hold) == 1) && !list_empty(&bp->b_lru)) - xfs_buf_ioacct_dec(bp); + __xfs_buf_ioacct_dec(bp); goto out_unlock; } /* the last reference has been dropped ... */ - xfs_buf_ioacct_dec(bp); + __xfs_buf_ioacct_dec(bp); if (!(bp->b_flags & XBF_STALE) && atomic_read(&bp->b_lru_ref)) { /* * If the buffer is added to the LRU take a new reference to the diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 8d1d44f87ce9..1508121f29f2 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -63,7 +63,6 @@ typedef enum { #define _XBF_KMEM (1 << 21)/* backed by heap memory */ #define _XBF_DELWRI_Q (1 << 22)/* buffer on a delwri queue */ #define _XBF_COMPOUND (1 << 23)/* compound buffer */ -#define _XBF_IN_FLIGHT (1 << 25) /* I/O in flight, for accounting purposes */ typedef unsigned int xfs_buf_flags_t; @@ -84,14 +83,14 @@ typedef unsigned int xfs_buf_flags_t; { _XBF_PAGES, "PAGES" }, \ { _XBF_KMEM, "KMEM" }, \ { _XBF_DELWRI_Q, "DELWRI_Q" }, \ - { _XBF_COMPOUND, "COMPOUND" }, \ - { _XBF_IN_FLIGHT, "IN_FLIGHT" } + { _XBF_COMPOUND, "COMPOUND" } /* * Internal state flags. */ #define XFS_BSTATE_DISPOSE (1 << 0) /* buffer being discarded */ +#define XFS_BSTATE_IN_FLIGHT (1 << 1) /* I/O in flight */ /* * The xfs_buftarg contains 2 notions of "sector size" - diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index c0bd0d7651a9..bb837310c07e 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -913,4 +913,55 @@ void drm_dp_aux_unregister(struct drm_dp_aux *aux); int drm_dp_start_crc(struct drm_dp_aux *aux, struct drm_crtc *crtc); int drm_dp_stop_crc(struct drm_dp_aux *aux); +struct drm_dp_dpcd_ident { + u8 oui[3]; + u8 device_id[6]; + u8 hw_rev; + u8 sw_major_rev; + u8 sw_minor_rev; +} __packed; + +/** + * struct drm_dp_desc - DP branch/sink device descriptor + * @ident: DP device identification from DPCD 0x400 (sink) or 0x500 (branch). + * @quirks: Quirks; use drm_dp_has_quirk() to query for the quirks. + */ +struct drm_dp_desc { + struct drm_dp_dpcd_ident ident; + u32 quirks; +}; + +int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc, + bool is_branch); + +/** + * enum drm_dp_quirk - Display Port sink/branch device specific quirks + * + * Display Port sink and branch devices in the wild have a variety of bugs, try + * to collect them here. The quirks are shared, but it's up to the drivers to + * implement workarounds for them. + */ +enum drm_dp_quirk { + /** + * @DP_DPCD_QUIRK_LIMITED_M_N: + * + * The device requires main link attributes Mvid and Nvid to be limited + * to 16 bits. + */ + DP_DPCD_QUIRK_LIMITED_M_N, +}; + +/** + * drm_dp_has_quirk() - does the DP device have a specific quirk + * @desc: Device decriptor filled by drm_dp_read_desc() + * @quirk: Quirk to query for + * + * Return true if DP device identified by @desc has @quirk. + */ +static inline bool +drm_dp_has_quirk(const struct drm_dp_desc *desc, enum drm_dp_quirk quirk) +{ + return desc->quirks & BIT(quirk); +} + #endif /* _DRM_DP_HELPER_H_ */ |