| /Linux-v6.6/include/uapi/linux/ |
| D | dcbnl.h | 42 * @prio_tc: priority assignment table mapping 8021Qp to traffic class
52 * 0 strict priority
137 * by RPs at this priority level on this Port
169 /* priority to buffer mapping */
181 * struct cee_pg - CEE Priority-Group managed object
187 * @pg_bw: bandwidth percentage for each priority group
188 * @prio_pg: priority to PG mapping indexed by priority
229 * @priority: 3-bit unsigned integer indicating priority for IEEE
230 * 8-bit 802.1p user priority bitmap for CEE
249 __u8 priority; member
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| D | ioprio.h | 21 * These are the io priority classes as implemented by the BFQ and mq-deadline
23 * ATA disks supporting NCQ IO priority, RT class IOs will be processed using
24 * high priority NCQ commands. BE is the best-effort scheduling class, the
39 * The RT and BE priority classes both support up to 8 priority levels that
40 * can be specified using the lower 3-bits of the priority data.
60 * Fallback BE class priority level.
66 * The 10 bits between the priority class and the priority level are used to
67 * optionally define I/O hints for any combination of I/O priority class and
70 * without affecting the I/O scheduling ordering defined by the I/O priority
108 * Return an I/O priority value based on a class, a level and a hint.
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| /Linux-v6.6/drivers/gpu/drm/i915/ |
| D | i915_scheduler_types.h | 21 * @priority: execution and service priority
26 * @priority will be executed before those with a lower @priority
29 * The &drm_i915_private.kernel_context is assigned the lowest priority.
31 int priority; member
51 * dynamic priority changes.
57 * is put to the back of its priority queue, then reshuffling its dependents).
97 * A schedule engine represents a submission queue with different priority
112 * @lock: protects requests in priority lists, requests, hold and
133 * @default_priolist: priority list for I915_PRIORITY_NORMAL
138 * @queue_priority_hint: Highest pending priority.
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| /Linux-v6.6/Documentation/locking/ |
| D | rt-mutex-design.rst | 16 The goal of this document is to help others understand the priority
21 Unbounded Priority Inversion
24 Priority inversion is when a lower priority process executes while a higher
25 priority process wants to run. This happens for several reasons, and
26 most of the time it can't be helped. Anytime a high priority process wants
27 to use a resource that a lower priority process has (a mutex for example),
28 the high priority process must wait until the lower priority process is done
29 with the resource. This is a priority inversion. What we want to prevent
30 is something called unbounded priority inversion. That is when the high
31 priority process is prevented from running by a lower priority process for
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| D | rt-mutex.rst | 5 RT-mutexes with priority inheritance are used to support PI-futexes,
6 which enable pthread_mutex_t priority inheritance attributes
16 RT-mutexes extend the semantics of simple mutexes by the priority
19 A low priority owner of a rt-mutex inherits the priority of a higher
20 priority waiter until the rt-mutex is released. If the temporarily
21 boosted owner blocks on a rt-mutex itself it propagates the priority
23 priority boosting is immediately removed once the rt_mutex has been
27 mutexes which protect shared resources. Priority inheritance is not a
30 an high priority thread, without losing determinism.
33 priority order. For same priorities FIFO order is chosen. For each
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| /Linux-v6.6/samples/bpf/ |
| D | test_cgrp2_sock.sh | 98 check_sock "dev , mark 0, priority 0" "No programs attached"
99 check_sock6 "dev , mark 0, priority 0" "No programs attached"
107 check_sock "dev cgrp2_sock, mark 0, priority 0" "Device set"
108 check_sock6 "dev cgrp2_sock, mark 0, priority 0" "Device set"
116 check_sock "dev , mark 666, priority 0" "Mark set"
117 check_sock6 "dev , mark 666, priority 0" "Mark set"
119 # verify priority is set
123 cleanup_and_exit 1 "Failed to install program to set priority"
125 check_sock "dev , mark 0, priority 123" "Priority set"
126 check_sock6 "dev , mark 0, priority 123" "Priority set"
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| /Linux-v6.6/net/mac80211/ |
| D | wme.c | 36 switch (skb->priority) { in wme_downgrade_ac()
39 skb->priority = 5; /* VO -> VI */ in wme_downgrade_ac()
43 skb->priority = 3; /* VI -> BE */ in wme_downgrade_ac()
47 skb->priority = 2; /* BE -> BK */ in wme_downgrade_ac()
90 while (sdata->wmm_acm & BIT(skb->priority)) { in ieee80211_downgrade_queue()
91 int ac = ieee802_1d_to_ac[skb->priority]; in ieee80211_downgrade_queue()
94 skb->priority == ifmgd->tx_tspec[ac].up) in ieee80211_downgrade_queue()
109 if (sta && sta->reserved_tid == skb->priority) in ieee80211_downgrade_queue()
110 skb->priority = ieee80211_fix_reserved_tid(skb->priority); in ieee80211_downgrade_queue()
113 return ieee802_1d_to_ac[skb->priority]; in ieee80211_downgrade_queue()
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| /Linux-v6.6/Documentation/userspace-api/media/v4l/ |
| D | vidioc-g-priority.rst | 13 VIDIOC_G_PRIORITY - VIDIOC_S_PRIORITY - Query or request the access priority associated with a file…
38 To query the current access priority applications call the
40 variable where the driver stores the current priority.
42 To request an access priority applications store the desired priority in
60 - Lowest priority, usually applications running in background, for
63 read from a device at this priority.
69 - Medium priority, usually applications started and interactively
72 controls. This is the default priority unless an application
76 - Highest priority. Only one file descriptor can have this priority,
88 The requested priority value is invalid.
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| /Linux-v6.6/arch/mips/kvm/ |
| D | interrupt.c | 28 unsigned int priority; in kvm_mips_deliver_interrupts() local
33 priority = __ffs(*pending_clr); in kvm_mips_deliver_interrupts()
34 while (priority <= MIPS_EXC_MAX) { in kvm_mips_deliver_interrupts()
35 kvm_mips_callbacks->irq_clear(vcpu, priority, cause); in kvm_mips_deliver_interrupts()
37 priority = find_next_bit(pending_clr, in kvm_mips_deliver_interrupts()
39 priority + 1); in kvm_mips_deliver_interrupts()
42 priority = __ffs(*pending); in kvm_mips_deliver_interrupts()
43 while (priority <= MIPS_EXC_MAX) { in kvm_mips_deliver_interrupts()
44 kvm_mips_callbacks->irq_deliver(vcpu, priority, cause); in kvm_mips_deliver_interrupts()
46 priority = find_next_bit(pending, in kvm_mips_deliver_interrupts()
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| /Linux-v6.6/Documentation/admin-guide/pm/ |
| D | intel-speed-select.rst | 324 allows users to define per core priority. This defines a mechanism to distribute
331 service and hence an associated priority. The granularity is at core level not
338 and use a priority type. There is a default per platform priority type, which
347 Clos Enable: Specify priority type with [--priority|-p]
350 There are two types of priority types:
354 Priority for ordered throttling is defined based on the index of the assigned
355 CLOS group. Where CLOS0 gets highest priority (throttled last).
357 Priority order is:
362 When proportional priority is used, there is an additional parameter called
364 proportional priority is to provide each core with the requested min., then
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| /Linux-v6.6/tools/power/cpupower/bench/ |
| D | system.c | 94 * sets the process priority parameter
96 * @param priority priority value
99 * @retval -1 when setting the priority failed
102 int set_process_priority(int priority) in set_process_priority() argument
106 dprintf("set scheduler priority to %i\n", priority); in set_process_priority()
108 param.sched_priority = priority; in set_process_priority()
112 fprintf(stderr, "warning: unable to set scheduler priority\n"); in set_process_priority()
146 * sets up the cpu affinity and scheduler priority
162 printf("high priority condition requested\n"); in prepare_system()
168 printf("low priority condition requested\n"); in prepare_system()
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| /Linux-v6.6/Documentation/virt/kvm/devices/ |
| D | xics.rst | 47 * Pending interrupt priority, 8 bits
48 Zero is the highest priority, 255 means no interrupt is pending.
50 * Pending IPI (inter-processor interrupt) priority, 8 bits
51 Zero is the highest priority, 255 means no IPI is pending.
56 * Current processor priority, 8 bits
57 Zero is the highest priority, meaning no interrupts can be
58 delivered, and 255 is the lowest priority.
71 * Priority, 8 bits
73 This is the priority specified for this interrupt source, where 0 is
74 the highest priority and 255 is the lowest. An interrupt with a
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| /Linux-v6.6/drivers/net/ethernet/sfc/siena/ |
| D | efx.h | 67 * existing filter with equal priority
76 * 1. If the existing filters have lower priority, or @replace_equal
77 * is set and they have equal priority, replace them.
79 * 2. If the existing filters have higher priority, return -%EPERM.
85 * all be inserted with the same priority and @replace_equal = %false.
97 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
104 enum efx_filter_priority priority, in efx_filter_remove_id_safe() argument
107 return efx->type->filter_remove_safe(efx, priority, filter_id); in efx_filter_remove_id_safe()
113 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
122 enum efx_filter_priority priority, in efx_filter_get_filter_safe() argument
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| /Linux-v6.6/Documentation/admin-guide/cgroup-v1/ |
| D | net_prio.rst | 2 Network priority cgroup
5 The Network priority cgroup provides an interface to allow an administrator to
6 dynamically set the priority of network traffic generated by various
9 Nominally, an application would set the priority of its traffic via the
13 2) The priority of application traffic is often a site-specific administrative
17 the priority of egress traffic on a given interface. Network priority groups can
36 It contains a list of tuples in the form <ifname priority>. Contents of this
43 iscsi net_prio cgroup and egressing on interface eth0 to have the priority of
46 priority.
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| /Linux-v6.6/drivers/net/ethernet/sfc/ |
| D | efx.h | 83 * existing filter with equal priority
92 * 1. If the existing filters have lower priority, or @replace_equal
93 * is set and they have equal priority, replace them.
95 * 2. If the existing filters have higher priority, return -%EPERM.
101 * all be inserted with the same priority and @replace_equal = %false.
113 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
120 enum efx_filter_priority priority, in efx_filter_remove_id_safe() argument
123 return efx->type->filter_remove_safe(efx, priority, filter_id); in efx_filter_remove_id_safe()
129 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
138 enum efx_filter_priority priority, in efx_filter_get_filter_safe() argument
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| /Linux-v6.6/tools/testing/selftests/bpf/prog_tests/ |
| D | netfilter_link_attach.c | 12 __s32 priority; member
23 { .pf = NFPROTO_IPV4, .priority = INT_MIN, .name = "invalid-priority-min", },
24 { .pf = NFPROTO_IPV4, .priority = INT_MAX, .name = "invalid-priority-max", },
27 { .pf = NFPROTO_INET, .priority = 1, .name = "invalid-inet-not-supported", },
29 { .pf = NFPROTO_IPV4, .priority = -10000, .expect_success = true, .name = "attach ipv4", },
30 { .pf = NFPROTO_IPV6, .priority = 10001, .expect_success = true, .name = "attach ipv6", },
57 X(opts, priority, i); in test_netfilter_link_attach()
68 ASSERT_ERR_PTR(link2, "attach program with same pf/hook/priority"); in test_netfilter_link_attach()
|
| D | tc_bpf.c | 13 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_p, .priority = 1); \
15 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_hp, .handle = 1, .priority = 1); \
17 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_pf, .priority = 1, .prog_fd = __fd); \
18 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_hpf, .handle = 1, .priority = 1, .prog_fd = __fd); \
19 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_hpi, .handle = 1, .priority = 1, .prog_id = 42); \
20 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_hpr, .handle = 1, .priority = 1, \
22 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_hpfi, .handle = 1, .priority = 1, .prog_fd = __fd, \
24 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts_prio_max, .handle = 1, .priority = UINT16_MAX + 1);
28 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts, .handle = 1, .priority = 1, .prog_fd = fd); in test_tc_bpf_basic()
42 !ASSERT_EQ(opts.priority, 1, "priority set") || in test_tc_bpf_basic()
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| /Linux-v6.6/drivers/net/ethernet/intel/ixgbe/ |
| D | ixgbe_dcb_82599.c | 15 * @prio_type: priority type indexed by traffic class
16 * @prio_tc: priority to tc assignments indexed by priority
45 /* Configure traffic class credits and priority */ in ixgbe_dcb_config_rx_arbiter_82599()
75 * @prio_type: priority type indexed by traffic class
94 /* Configure traffic class credits and priority */ in ixgbe_dcb_config_tx_desc_arbiter_82599()
126 * @prio_type: priority type indexed by traffic class
127 * @prio_tc: priority to tc assignments indexed by priority
156 /* Configure traffic class credits and priority */ in ixgbe_dcb_config_tx_data_arbiter_82599()
183 * ixgbe_dcb_config_pfc_82599 - Configure priority flow control
186 * @prio_tc: priority to tc assignments indexed by priority
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| /Linux-v6.6/include/linux/ |
| D | plist.h | 3 * Descending-priority-sorted double-linked list
18 * This is a priority-sorted list of nodes; each node has a
19 * priority from INT_MIN (highest) to INT_MAX (lowest).
21 * Addition is O(K), removal is O(1), change of priority of a node is
22 * O(K) and K is the number of RT priority levels used in the system.
27 * - The tier 1 list is the prio_list, different priority nodes.
45 * The nodes on the prio_list list are sorted by priority to simplify
49 * The nodes on the node_list are ordered by priority and can contain
50 * entries which have the same priority. Those entries are ordered
54 * for the priority of the node and insert it before the node_list
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| /Linux-v6.6/arch/powerpc/include/asm/vdso/ |
| D | processor.h | 7 /* Macros for adjusting thread priority (hardware multi-threading) */
9 #define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority")
10 #define HMT_low() asm volatile("or 1, 1, 1 # low priority")
11 #define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority")
12 #define HMT_medium() asm volatile("or 2, 2, 2 # medium priority")
13 #define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority")
14 #define HMT_high() asm volatile("or 3, 3, 3 # high priority")
27 /* Pre-POWER10 uses low ; medium priority nops */ \
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| /Linux-v6.6/block/ |
| D | blk-ioprio.c | 3 * Block rq-qos policy for assigning an I/O priority class to requests.
5 * Using an rq-qos policy for assigning I/O priority class has two advantages
24 * enum prio_policy - I/O priority class policy.
25 * @POLICY_NO_CHANGE: (default) do not modify the I/O priority class.
29 * @POLICY_ALL_TO_IDLE: change the I/O priority class into IOPRIO_CLASS_IDLE.
198 * For RT threads, the default priority level is 4 because in blkcg_set_ioprio()
199 * task_nice is 0. By promoting non-RT io-priority to RT-class in blkcg_set_ioprio()
201 * RT-class but need a higher io-priority can use ioprio_set() in blkcg_set_ioprio()
210 * Except for IOPRIO_CLASS_NONE, higher I/O priority numbers in blkcg_set_ioprio()
211 * correspond to a lower priority. Hence, the max_t() below selects in blkcg_set_ioprio()
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| /Linux-v6.6/drivers/net/ethernet/sfc/falcon/ |
| D | efx.h | 87 * existing filter with equal priority
96 * 1. If the existing filters have lower priority, or @replace_equal
97 * is set and they have equal priority, replace them.
99 * 2. If the existing filters have higher priority, return -%EPERM.
105 * all be inserted with the same priority and @replace_equal = %false.
117 * @priority: Priority of filter, as passed to @ef4_filter_insert_filter
124 enum ef4_filter_priority priority, in ef4_filter_remove_id_safe() argument
127 return efx->type->filter_remove_safe(efx, priority, filter_id); in ef4_filter_remove_id_safe()
133 * @priority: Priority of filter, as passed to @ef4_filter_insert_filter
142 enum ef4_filter_priority priority, in ef4_filter_get_filter_safe() argument
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| /Linux-v6.6/lib/ |
| D | parman.c | 2 * lib/parman.c - Manager for linear priority array areas
236 * with the same priority. Consider following example:
247 * In this example, there are 3 priority chunks. The order of the priorities
248 * matters, however the order of items within a single priority chunk does not
260 * The goal of parman is to maintain the priority ordering. The caller
297 * parman_prio_init - initializes a parman priority chunk
300 * @priority: desired priority of the chunk
304 * Before caller could add an item with certain priority, he has to
305 * initialize a priority chunk for it using this function.
308 unsigned long priority) in parman_prio_init() argument
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| /Linux-v6.6/Documentation/admin-guide/mm/ |
| D | swap_numa.rst | 13 Swap device has priority and that decides the order of it to be used. To make
14 use of automatically binding, there is no need to manipulate priority settings
63 The current code uses a priority based list, swap_avail_list, to decide
65 priority, they are used round robin. This change here replaces the single
67 it sees its own priority based list of available swap devices. Swap
68 device's priority can be promoted on its matching node's swap_avail_list.
70 The current swap device's priority is set as: user can set a >=0 value,
71 or the system will pick one starting from -1 then downwards. The priority
74 the semantics for priority >=0 cases, the previous starting from -1 then
77 node, they will all be promoted to priority -1 on that node's plist and will
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| /Linux-v6.6/include/trace/events/ |
| D | vmscan.h | 203 int priority),
206 priority),
217 __field(int, priority)
229 __entry->priority = priority;
232 … nid: %d objects to shrink %ld gfp_flags %s cache items %ld delta %lld total_scan %ld priority %d",
241 __entry->priority)
357 struct reclaim_stat *stat, int priority, int file),
359 TP_ARGS(nid, nr_scanned, nr_reclaimed, stat, priority, file),
373 __field(int, priority)
389 __entry->priority = priority;
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