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/linux/drivers/iio/imu/inv_icm42600/
H A Dinv_icm42600_buffer.c166 static unsigned int inv_icm42600_wm_truncate(unsigned int watermark, in inv_icm42600_wm_truncate() argument
172 wm_size = watermark * packet_size; in inv_icm42600_wm_truncate()
182 * inv_icm42600_buffer_update_watermark - update watermark FIFO threshold
187 * FIFO watermark threshold is computed based on the required watermark values
188 * set for gyro and accel sensors. Since watermark is all about acceptable data
190 * smallest latency but this is not as simple as choosing the smallest watermark
191 * value. Latency depends on watermark and ODR. It requires several steps:
198 * 3) Since all periods are multiple of each others, watermark is computed by
206 unsigned int wm_gyro, wm_accel, watermark; in inv_icm42600_buffer_update_watermark() local
215 /* compute sensors latency, depending on sensor watermark and odr */ in inv_icm42600_buffer_update_watermark()
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/linux/drivers/net/wireless/intel/iwlwifi/mvm/
H A Dsf.c100 int i, j, watermark; in iwl_mvm_fill_sf_command() local
106 sf_cmd->watermark[SF_LONG_DELAY_ON] = cpu_to_le32(SF_W_MARK_SCAN); in iwl_mvm_fill_sf_command()
110 * capabilities of the AP station, and choose the watermark accordingly. in iwl_mvm_fill_sf_command()
133 watermark = SF_W_MARK_SISO; in iwl_mvm_fill_sf_command()
136 watermark = SF_W_MARK_MIMO2; in iwl_mvm_fill_sf_command()
139 watermark = SF_W_MARK_MIMO3; in iwl_mvm_fill_sf_command()
143 watermark = SF_W_MARK_LEGACY; in iwl_mvm_fill_sf_command()
145 /* default watermark value for unassociated mode. */ in iwl_mvm_fill_sf_command()
147 watermark = SF_W_MARK_MIMO2; in iwl_mvm_fill_sf_command()
149 sf_cmd->watermark[SF_FULL_ON] = cpu_to_le32(watermark); in iwl_mvm_fill_sf_command()
/linux/fs/bcachefs/
H A Dalloc_foreground.c188 static inline unsigned open_buckets_reserved(enum bch_watermark watermark) in open_buckets_reserved() argument
190 switch (watermark) { in open_buckets_reserved()
207 enum bch_watermark watermark, in __try_alloc_bucket() argument
237 if (unlikely(c->open_buckets_nr_free <= open_buckets_reserved(watermark))) { in __try_alloc_bucket()
275 enum bch_watermark watermark, u64 free_entry, in try_alloc_bucket() argument
364 ob = __try_alloc_bucket(c, ca, b, watermark, a, s, cl); in try_alloc_bucket()
384 enum bch_watermark watermark, in bch2_bucket_alloc_early() argument
451 ob = __try_alloc_bucket(trans->c, ca, k.k->p.offset, watermark, a, s, cl); in bch2_bucket_alloc_early()
477 enum bch_watermark watermark, in bch2_bucket_alloc_freelist() argument
521 ob = try_alloc_bucket(trans, ca, watermark, in bch2_bucket_alloc_freelist()
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H A Dbuckets.h204 static inline u64 bch2_dev_buckets_reserved(struct bch_dev *ca, enum bch_watermark watermark) in bch2_dev_buckets_reserved() argument
208 switch (watermark) { in bch2_dev_buckets_reserved()
234 enum bch_watermark watermark) in dev_buckets_free() argument
239 bch2_dev_buckets_reserved(ca, watermark)); in dev_buckets_free()
244 enum bch_watermark watermark) in __dev_buckets_available() argument
252 - bch2_dev_buckets_reserved(ca, watermark)); in __dev_buckets_available()
256 enum bch_watermark watermark) in dev_buckets_available() argument
258 return __dev_buckets_available(ca, bch2_dev_usage_read(ca), watermark); in dev_buckets_available()
/linux/Documentation/devicetree/bindings/mmc/
H A Dsynopsys-dw-mshc-common.yaml51 fifo-watermark-aligned:
54 watermark in PIO mode. But fifo watermark is requested to be aligned
56 data done irq. Add this watermark quirk to mark this requirement and
57 force fifo watermark setting accordingly.
/linux/kernel/events/
H A Dring_buffer.c237 if (unlikely(head - local_read(&rb->wakeup) > rb->watermark)) in __perf_output_begin()
238 local_add(rb->watermark, &rb->wakeup); in __perf_output_begin()
314 ring_buffer_init(struct perf_buffer *rb, long watermark, int flags) in ring_buffer_init() argument
318 if (watermark) in ring_buffer_init()
319 rb->watermark = min(max_size, watermark); in ring_buffer_init()
321 if (!rb->watermark) in ring_buffer_init()
322 rb->watermark = max_size / 2; in ring_buffer_init()
678 pgoff_t pgoff, int nr_pages, long watermark, int flags) in rb_alloc_aux() argument
692 * Watermark defaults to half the buffer, and so does the in rb_alloc_aux()
695 if (!watermark) in rb_alloc_aux()
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H A Dinternal.h32 long watermark; /* wakeup watermark */ member
81 rb_alloc(int nr_pages, long watermark, int cpu, int flags);
84 pgoff_t pgoff, int nr_pages, long watermark, int flags);
/linux/arch/arm/mach-alpine/
H A Dalpine_cpu_pm.c47 uint32_t watermark; in alpine_cpu_pm_init() local
57 watermark = readl(&al_cpu_resume_regs->watermark); in alpine_cpu_pm_init()
58 wakeup_supported = (watermark & AL_CPU_RESUME_MAGIC_NUM_MASK) in alpine_cpu_pm_init()
H A Dalpine_cpu_resume.h19 /* Watermark for validating the CPU resume struct */
20 uint32_t watermark; member
/linux/drivers/gpu/drm/amd/display/dc/dcn20/
H A Ddcn20_mmhubbub.c
/linux/drivers/media/pci/intel/ipu6/
H A Dipu6-isys-video.c764 av->watermark.width = ipu6_isys_get_frame_width(av); in ipu6_isys_configure_stream_watermark()
765 av->watermark.height = ipu6_isys_get_frame_height(av); in ipu6_isys_configure_stream_watermark()
766 av->watermark.sram_gran_shift = isys->pdata->ipdata->sram_gran_shift; in ipu6_isys_configure_stream_watermark()
767 av->watermark.sram_gran_size = isys->pdata->ipdata->sram_gran_size; in ipu6_isys_configure_stream_watermark()
771 av->watermark.hblank = hb.value; in ipu6_isys_configure_stream_watermark()
773 av->watermark.hblank = 0; in ipu6_isys_configure_stream_watermark()
787 av->watermark.pixel_rate = pixel_rate; in ipu6_isys_configure_stream_watermark()
800 struct video_stream_watermark *watermark = &av->watermark; in calculate_stream_datarate() local
807 shift = watermark->sram_gran_shift; in calculate_stream_datarate()
808 size = watermark->sram_gran_size; in calculate_stream_datarate()
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/linux/drivers/gpu/drm/amd/display/dc/dce110/
H A Ddce110_mem_input_v.c666 /*Write mask to enable reading/writing of watermark set A*/ in program_urgency_watermark()
689 /*Write mask to enable reading/writing of watermark set B*/ in program_urgency_watermark()
748 /*Write mask to enable reading/writing of watermark set A*/ in program_stutter_watermark()
776 /*Write watermark set A*/ in program_stutter_watermark()
783 /*Write mask to enable reading/writing of watermark set B*/ in program_stutter_watermark()
792 /*Write watermark set B*/ in program_stutter_watermark()
828 /* Write mask to enable reading/writing of watermark set A */ in program_nbp_watermark()
858 /* Write watermark set A */ in program_nbp_watermark()
867 /* Write mask to enable reading/writing of watermark set B */ in program_nbp_watermark()
894 /* Write watermark set B */ in program_nbp_watermark()
/linux/Documentation/mm/
H A Dbalance.rst82 its watermark.
86 the number of pages falls below watermark[WMARK_MIN], the hysteric field
88 watermark[WMARK_HIGH]. When low_on_memory is set, page allocation requests will
92 pages is below watermark[WMARK_LOW]; in which case zone_wake_kswapd is also set.
/linux/kernel/cgroup/
H A Dmisc.c129 old = atomic64_read(&res->watermark); in misc_cg_update_watermark()
132 if (atomic64_cmpxchg(&res->watermark, old, new_usage) == old) in misc_cg_update_watermark()
343 u64 watermark; in misc_cg_peak_show() local
347 watermark = atomic64_read(&cg->res[i].watermark); in misc_cg_peak_show()
348 if (READ_ONCE(misc_res_capacity[i]) || watermark) in misc_cg_peak_show()
349 seq_printf(sf, "%s %llu\n", misc_res_name[i], watermark); in misc_cg_peak_show()
H A Dpids.c58 int64_t watermark; member
100 * the watermark, and this lets us avoid extra atomic overhead. in pids_update_watermark()
102 if (nr_pids > READ_ONCE(p->watermark)) in pids_update_watermark()
103 WRITE_ONCE(p->watermark, nr_pids); in pids_update_watermark()
185 * the hierarchy, but that's tolerable for the watermark. in pids_try_charge()
358 return READ_ONCE(pids->watermark);
/linux/drivers/net/ethernet/mscc/
H A Docelot_devlink.c23 * PRIO_SHR: sharing watermark per QoS class across all ports
25 * COL_SHR: sharing watermark per color (drop precedence) across all ports
248 * reservations and rely only on the sharing watermark for frames with drop
285 * sharing watermark for drop priority 0. So frames with drop priority set to 1
346 /* Calculate all reservations, then set up the sharing watermark for DP=0 to
490 /* Watermark encode
559 * COL_SHR(dp=0) sharing watermark.
631 /* This configures the P_RSRV per-port reserved resource watermark */
711 /* This configures the Q_RSRV per-port-tc reserved resource watermark */
772 /* The watermark occupancy registers are cleared upon read,
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/linux/drivers/gpu/drm/i915/display/
H A Dintel_wm.c13 * intel_update_watermarks - update FIFO watermark values based on current modes
16 * Calculate watermark values for the various WM regs based on current mode
27 * watermark = dotclock * bytes per pixel * latency
32 * watermark = (trunc(latency/line time)+1) * surface width *
135 * watermark code doesn't handle that correctly. Cursor updates in intel_wm_plane_visible()
138 * around this problem with the watermark code. in intel_wm_plane_visible()
/linux/include/linux/amba/
H A Dpl022.h107 * enum ssp_rx_level_trig - receive FIFO watermark level which triggers
119 * Transmit FIFO watermark level which triggers (IT Interrupt fires
256 * @rx_lev_trig: Rx FIFO watermark level (for IT & DMA mode)
257 * @tx_lev_trig: Tx FIFO watermark level (for IT & DMA mode)
/linux/drivers/gpu/drm/amd/display/dc/dcn30/
H A Ddcn30_mmhubbub.c58 * unsigned int cli_watermark[4]; //4 group urgent watermark
59 * unsigned int pstate_watermark[4]; //4 group pstate watermark
164 /* Programming dwb watermark */ in mmhubbub3_config_mcif_arb()
165 …/* Watermark to generate urgent in MCIF_WB_CLI, value is determined by MCIF_WB_CLI_WATERMARK_MASK.… in mmhubbub3_config_mcif_arb()
180 /* Programming nb pstate watermark */ in mmhubbub3_config_mcif_arb()
/linux/drivers/gpu/drm/amd/display/dc/mmhubbub/dcn32/
H A Ddcn32_mmhubbub.c58 * unsigned int cli_watermark[4]; //4 group urgent watermark
59 * unsigned int pstate_watermark[4]; //4 group pstate watermark
164 /* Programming dwb watermark */ in mmhubbub32_config_mcif_arb()
165 …/* Watermark to generate urgent in MCIF_WB_CLI, value is determined by MCIF_WB_CLI_WATERMARK_MASK.… in mmhubbub32_config_mcif_arb()
180 /* Programming nb pstate watermark */ in mmhubbub32_config_mcif_arb()
/linux/mm/
H A Dpage_counter.c89 * inaccuracy in the watermark.
95 * we can guarantee that watermark >= local_watermark, so we
103 if (new > READ_ONCE(c->watermark)) in page_counter_try_charge()
104 WRITE_ONCE(c->watermark, new); in page_counter_try_charge()
159 if (new > READ_ONCE(c->watermark)) in page_counter_uncharge()
160 WRITE_ONCE(c->watermark, new);
/linux/Documentation/iio/
H A Diio_devbuf.rst38 ``watermark``
44 Poll will block until the watermark is reached.
47 the low watermark is available.
50 there are less samples than the watermark level. This allows the application to
/linux/include/linux/input/
H A Dadxl34x.h262 * watermark:
263 * The Watermark feature can be used to reduce the interrupt load
264 * of the system. The FIFO fills up to the value stored in watermark
266 * A '0' disables the watermark feature.
269 u8 watermark; member
/linux/drivers/net/ethernet/intel/ice/
H A Dice_vf_mbx.c229 * snapshot exceed the watermark value, the state machine enters
231 * Traverse: If pending message count is below watermark then iterate
233 * Detect: If pending message count exceeds watermark traverse
261 /* The watermark value should not be lesser than the threshold limit in ice_mbx_vf_state_handler()
297 * mailbox queue. Comparing this value against the watermark in ice_mbx_vf_state_handler()
/linux/drivers/scsi/elx/efct/
H A Defct_lio.c1104 /* initialize IO watermark fields */ in efct_scsi_tgt_new_device()
1165 int watermark; in efct_lio_setup_session()
1210 /* update IO watermark: increment initiator count */ in efct_lio_setup_session()
1212 watermark = efct->tgt_efct.watermark_max - in efct_lio_setup_session()
1214 watermark = (efct->tgt_efct.watermark_min > watermark) ? in efct_lio_setup_session()
1215 efct->tgt_efct.watermark_min : watermark; in efct_lio_setup_session()
1216 atomic_set(&efct->tgt_efct.io_high_watermark, watermark); in efct_lio_setup_session()
1283 int watermark; in efct_scsi_del_initiator()
1308 * update IO watermark in efct_scsi_del_initiator()
1164 int watermark; efct_lio_setup_session() local
1282 int watermark; efct_scsi_del_initiator() local
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