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/Linux-v6.1/tools/perf/Documentation/
Dtopdown.txt2 -----------------------------------
5 methodology to break down CPU pipeline execution into 4 bottlenecks:
10 Traditionally this was implemented by events in generic counters
13 perf stat --topdown implements this.
15 Full Top Down includes more levels that can break down the
24 fixed counters and do not require generic counters. This allows
27 % perf stat -a --topdown -I1000
64 metric event, and allow user programs to read the performance counters.
95 int slots_fd = perf_event_open(&slots, 0, -1, -1, 0);
115 int metrics_fd = perf_event_open(&metrics, 0, -1, slots_fd, 0);
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Dperf-stat.txt1 perf-stat(1)
5 ----
6 perf-stat - Run a command and gather performance counter statistics
9 --------
11 'perf stat' [-e <EVENT> | --event=EVENT] [-a] <command>
12 'perf stat' [-e <EVENT> | --event=EVENT] [-a] \-- <command> [<options>]
13 'perf stat' [-e <EVENT> | --event=EVENT] [-a] record [-o file] \-- <command> [<options>]
14 'perf stat' report [-i file]
17 -----------
23 -------
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/Linux-v6.1/Documentation/ABI/testing/
Dsysfs-bus-pci-devices-aer_stats2 --------------------------
5 statistical counters indicate the errors "as seen/reported by the device".
7 counters may increment at its link partner (e.g. root port) because the
9 problematic endpoint itself (which may report all counters as 0 as it never
15 Contact: linux-pci@vger.kernel.org, rajatja@google.com
28 Advisory Non-Fatal 0
36 Contact: linux-pci@vger.kernel.org, rajatja@google.com
46 Surprise Down Error 0
66 Contact: linux-pci@vger.kernel.org, rajatja@google.com
76 Surprise Down Error 0
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/Linux-v6.1/tools/testing/selftests/net/forwarding/
Dvxlan_bridge_1d.sh2 # SPDX-License-Identifier: GPL-2.0
4 # +--------------------+ +----------------------+
8 # +----|---------------+ +--|-------------------+
10 # +----|--------------------------------------------------|-------------------+
12 # | +--|--------------------------------------------------|-----------------+ |
19 # | +-----------------------------------------------------------------------+ |
26 # +----|----------------------------------------------------------------------+
28 # +----|--------------------------------------------------------+
37 # +----|---------------------------------------|----------------+
39 # +----|------------------------------+ +----|------------------------------+
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Dvxlan_bridge_1q.sh2 # SPDX-License-Identifier: GPL-2.0
4 # +-----------------------+ +------------------------+
13 # +----|------------------+ +----|-------------------+
15 # +----|--------------------------------------------------|-------------------+
17 # | +--|--------------------------------------------------|-----------------+ |
27 # | +-----------------------------------------------------------------------+ |
34 # +----|----------------------------------------------------------------------+
36 # +----|--------------------------------------------------------+
45 # +----|---------------------------------------|----------------+
47 # +----|------------------------------+ +----|------------------------------+
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Dvxlan_bridge_1q_ipv6.sh2 # SPDX-License-Identifier: GPL-2.0
4 # +-----------------------+ +------------------------+
15 # +----|------------------+ +----|-------------------+
17 # +----|--------------------------------------------------|-------------------+
19 # | +--|--------------------------------------------------|-----------------+ |
31 # | +-----------------------------------------------------------------------+ |
38 # +----|----------------------------------------------------------------------+
40 # +----|----------------------------------------------------------+
49 # +----|---------------------------------------|------------------+
51 # +----|--------------------------------+ +----|-------------------------------+
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Dvxlan_bridge_1d_ipv6.sh2 # SPDX-License-Identifier: GPL-2.0
4 # +-----------------------+ +------------------------+
9 # +----|------------------+ +----|-------------------+
11 # +----|--------------------------------------------------|-------------------+
13 # | +--|--------------------------------------------------|-----------------+ |
20 # | +-----------------------------------------------------------------------+ |
27 # +----|----------------------------------------------------------------------+
29 # +----|----------------------------------------------------------+
38 # +----|---------------------------------------|------------------+
40 # +----|--------------------------------+ +----|-------------------------------+
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/Linux-v6.1/arch/arm64/kernel/
Dtopology.c61 cpu_topology[cpu].thread_id = -1; in parse_acpi_topology()
102 pr_debug("CPU%d: counters are not supported.\n", cpu); in freq_counters_valid()
108 pr_debug("CPU%d: cycle counters are not enabled.\n", cpu); in freq_counters_valid()
122 return -EINVAL; in freq_inv_set_max_ratio()
126 * Pre-compute the fixed ratio between the frequency of the constant in freq_inv_set_max_ratio()
130 * arch_max_freq_scale = ---------- * SCHED_CAPACITY_SCALE² in freq_inv_set_max_ratio()
133 * We use a factor of 2 * SCHED_CAPACITY_SHIFT -> SCHED_CAPACITY_SCALE² in freq_inv_set_max_ratio()
135 * very low reference frequencies (down to the KHz range which should in freq_inv_set_max_ratio()
142 return -EINVAL; in freq_inv_set_max_ratio()
169 * scale = ------- * -------------------- in amu_scale_freq_tick()
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/Linux-v6.1/tools/perf/
Ddesign.txt2 Performance Counters for Linux
3 ------------------------------
5 Performance counters are special hardware registers available on most modern
7 as instructions executed, cachemisses suffered, or branches mis-predicted -
8 without slowing down the kernel or applications. These registers can also
9 trigger interrupts when a threshold number of events have passed - and can
13 hardware capabilities. It provides per task and per CPU counters, counter
15 provides "virtual" 64-bit counters, regardless of the width of the
16 underlying hardware counters.
18 Performance counters are accessed via special file descriptors.
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/Linux-v6.1/tools/testing/selftests/netfilter/
Dnft_flowtable.sh2 # SPDX-License-Identifier: GPL-2.0
7 # Originator (MTU 9000) <-Router1-> MTU 1500 <-Router2-> Responder (MTU 2000)
14 # nft_flowtable.sh -o8000 -l1500 -r2000
17 sfx=$(mktemp -u "XXXXXXXX")
18 ns1="ns1-$sfx"
19 ns2="ns2-$sfx"
20 nsr1="nsr1-$sfx"
21 nsr2="nsr2-$sfx"
23 # Kselftest framework requirement - SKIP code is 4.
31 log_netns=$(sysctl -n net.netfilter.nf_log_all_netns)
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/Linux-v6.1/arch/mips/sibyte/common/
Dsb_tbprof.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2007 Ralf Baechle <ralf@linux-mips.org>
7 * written by Ralf Baechle <ralf@linux-mips.org>
85 * Routines for using 40-bit SCD cycle counter
89 * zclk_timer_init(0) at least every 2^40 - 1 ZCLKs.
145 u64 next = (1ULL << 40) - tb_period; in arm_tb()
156 * Unfortunately, in Pass 2 we must clear all counters to knock down in arm_tb()
158 * requires ALL of the SCD perf counters. in arm_tb()
162 /* keep counters 0,2,3,4,5,6,7 as is */ in arm_tb()
167 M_SPC_CFG_CLEAR | /* clear all counters */ in arm_tb()
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/Linux-v6.1/drivers/infiniband/ulp/opa_vnic/
Dopa_vnic_encap.h26 * - Redistributions of source code must retain the above copyright
28 * - Redistributions in binary form must reproduce the above copyright
32 * - Neither the name of Intel Corporation nor the names of its
84 #define OPA_VNIC_EMA_DATA (OPA_MGMT_MAD_SIZE - IB_MGMT_VENDOR_HDR)
118 * struct opa_vesw_info - OPA vnic switch information
119 * @fabric_id: 10-bit fabric id
120 * @vesw_id: 12-bit virtual ethernet switch id
155 * struct opa_per_veswport_info - OPA vnic per port information
171 * @non_vlan_sc_uc: sc for non-vlan unicast ethernet packets
172 * @non_vlan_vl_uc: vl for non-vlan unicast ethernet packets
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/Linux-v6.1/tools/testing/selftests/drivers/net/mlxsw/
Dqos_mc_aware.sh2 # SPDX-License-Identifier: GPL-2.0
6 # MC load. This issue can be overcome by putting the switch to MC-aware mode.
8 # under MC flood, and therefore that the MC-aware mode is enabled and correctly
17 # So instead we send traffic with mausezahn and use RX ethtool counters at $h3.
19 # each gets a different priority and we can use per-prio ethtool counters to
28 # +---------------------------+ +----------------------------------+
30 # | | | unicast --> + $h2.111 |
32 # | traffic | | | e-qos-map 0:1 |
33 # | $h1 + <----- | | | |
35 # +---------------|-----------+ +--------------|-------------------+
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Ddevlink_trap_l3_exceptions.sh2 # SPDX-License-Identifier: GPL-2.0
4 # Test devlink-trap L3 exceptions functionality over mlxsw.
8 # +---------------------------------+
16 # +----|----------------------------+
18 # +----|----------------------------------------------------------------------+
28 # +----|----------------------------------------------------------------------+
30 # +----|----------------------------+
38 # +---------------------------------+
65 ip -4 route add default vrf v$h1 nexthop via 192.0.2.2
66 ip -6 route add default vrf v$h1 nexthop via 2001:db8:1::2
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/Linux-v6.1/Documentation/ABI/stable/
Dsysfs-class-infiniband2 -------------------------------------------------
9 Contact: linux-rdma@vger.kernel.org
24 Contact: linux-rdma@vger.kernel.org
34 Contact: linux-rdma@vger.kernel.org
39 What: /sys/class/infiniband/<device>/ports/<port-num>/lid
40 What: /sys/class/infiniband/<device>/ports/<port-num>/rate
41 What: /sys/class/infiniband/<device>/ports/<port-num>/lid_mask_count
42 What: /sys/class/infiniband/<device>/ports/<port-num>/sm_sl
43 What: /sys/class/infiniband/<device>/ports/<port-num>/sm_lid
44 What: /sys/class/infiniband/<device>/ports/<port-num>/state
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/Linux-v6.1/drivers/net/ethernet/intel/fm10k/
Dfm10k_common.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
7 * fm10k_get_bus_info_generic - Generic set PCI bus info
22 hw->bus_caps.width = fm10k_bus_width_pcie_x1; in fm10k_get_bus_info_generic()
25 hw->bus_caps.width = fm10k_bus_width_pcie_x2; in fm10k_get_bus_info_generic()
28 hw->bus_caps.width = fm10k_bus_width_pcie_x4; in fm10k_get_bus_info_generic()
31 hw->bus_caps.width = fm10k_bus_width_pcie_x8; in fm10k_get_bus_info_generic()
34 hw->bus_caps.width = fm10k_bus_width_unknown; in fm10k_get_bus_info_generic()
40 hw->bus_caps.speed = fm10k_bus_speed_2500; in fm10k_get_bus_info_generic()
43 hw->bus_caps.speed = fm10k_bus_speed_5000; in fm10k_get_bus_info_generic()
[all …]
/Linux-v6.1/drivers/media/test-drivers/vivid/
Dvivid-kthread-touch.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * vivid-kthread-touch.c - touch capture thread support functions.
9 #include "vivid-core.h"
10 #include "vivid-kthread-touch.h"
11 #include "vivid-touch-cap.h"
18 spin_lock(&dev->slock); in vivid_thread_tch_cap_tick()
19 if (!list_empty(&dev->touch_cap_active)) { in vivid_thread_tch_cap_tick()
20 tch_cap_buf = list_entry(dev->touch_cap_active.next, in vivid_thread_tch_cap_tick()
22 list_del(&tch_cap_buf->list); in vivid_thread_tch_cap_tick()
25 spin_unlock(&dev->slock); in vivid_thread_tch_cap_tick()
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/Linux-v6.1/Documentation/timers/
Dtimekeeping.rst10 If you grep through the kernel source you will find a number of architecture-
12 architecture-specific overrides of the sched_clock() function and some
17 on this timeline, providing facilities such as high-resolution timers.
19 provide an accurate delay source using hardware counters.
23 -------------
31 n bits which count from 0 to (2^n)-1 and then wraps around to 0 and start over.
36 shall be as stable and correct as possible as compared to a real-world wall
46 When the wall-clock accuracy of the clock source isn't satisfactory, there
48 the user-visible time to RTC clocks in the system or against networked time
73 register counts up or down, and the timer clock rate, and then conjure all
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/Linux-v6.1/drivers/infiniband/hw/mlx5/
Dcounters.c1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
3 * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved.
8 #include "counters.h"
94 static int mlx5_ib_read_counters(struct ib_counters *counters, in mlx5_ib_read_counters() argument
98 struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); in mlx5_ib_read_counters()
103 mutex_lock(&mcounters->mcntrs_mutex); in mlx5_ib_read_counters()
104 if (mcounters->cntrs_max_index > read_attr->ncounters) { in mlx5_ib_read_counters()
105 ret = -EINVAL; in mlx5_ib_read_counters()
109 mread_attr.out = kcalloc(mcounters->counters_num, sizeof(u64), in mlx5_ib_read_counters()
112 ret = -ENOMEM; in mlx5_ib_read_counters()
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/Linux-v6.1/drivers/scsi/elx/efct/
Defct_xport.c1 // SPDX-License-Identifier: GPL-2.0
35 xport->efct = efct; in efct_xport_alloc()
49 if (!efct->sess_debugfs_dir) { in efct_xport_init_debugfs()
50 efct->sess_debugfs_dir = debugfs_create_dir("sessions", in efct_xport_init_debugfs()
52 if (IS_ERR(efct->sess_debugfs_dir)) { in efct_xport_init_debugfs()
63 return -EIO; in efct_xport_init_debugfs()
69 debugfs_remove(efct->sess_debugfs_dir); in efct_xport_delete_debugfs()
70 efct->sess_debugfs_dir = NULL; in efct_xport_delete_debugfs()
83 struct efct *efct = xport->efct; in efct_xport_attach()
86 rc = efct_hw_setup(&efct->hw, efct, efct->pci); in efct_xport_attach()
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/Linux-v6.1/fs/xfs/
Dxfs_trans.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
68 xfs_extent_busy_sort(&tp->t_busy); in xfs_trans_free()
69 xfs_extent_busy_clear(tp->t_mountp, &tp->t_busy, false); in xfs_trans_free()
73 if (!(tp->t_flags & XFS_TRANS_NO_WRITECOUNT)) in xfs_trans_free()
74 sb_end_intwrite(tp->t_mountp->m_super); in xfs_trans_free()
100 ntp->t_magic = XFS_TRANS_HEADER_MAGIC; in xfs_trans_dup()
101 ntp->t_mountp = tp->t_mountp; in xfs_trans_dup()
102 INIT_LIST_HEAD(&ntp->t_items); in xfs_trans_dup()
103 INIT_LIST_HEAD(&ntp->t_busy); in xfs_trans_dup()
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/Linux-v6.1/arch/x86/events/amd/
Duncore.c1 // SPDX-License-Identifier: GPL-2.0-only
64 return event->pmu->type == amd_nb_pmu.type; in is_nb_event()
69 return event->pmu->type == amd_llc_pmu.type; in is_llc_event()
75 return *per_cpu_ptr(amd_uncore_nb, event->cpu); in event_to_amd_uncore()
77 return *per_cpu_ptr(amd_uncore_llc, event->cpu); in event_to_amd_uncore()
84 struct hw_perf_event *hwc = &event->hw; in amd_uncore_read()
93 prev = local64_read(&hwc->prev_count); in amd_uncore_read()
94 rdpmcl(hwc->event_base_rdpmc, new); in amd_uncore_read()
95 local64_set(&hwc->prev_count, new); in amd_uncore_read()
96 delta = (new << COUNTER_SHIFT) - (prev << COUNTER_SHIFT); in amd_uncore_read()
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/Linux-v6.1/drivers/net/dsa/
Dvitesse-vsc73xx-core.c1 // SPDX-License-Identifier: GPL-2.0
3 * Vitesse VSC7385 SparX-G5 5+1-port Integrated Gigabit Ethernet Switch
4 * Vitesse VSC7388 SparX-G8 8-port Integrated Gigabit Ethernet Switch
5 * Vitesse VSC7395 SparX-G5e 5+1-port Integrated Gigabit Ethernet Switch
6 * Vitesse VSC7398 SparX-G8e 8-port Integrated Gigabit Ethernet Switch
8 * These switches have a built-in 8051 CPU and can download and execute a
10 * handling the switch in a memory-mapped manner by connecting to that external
31 #include "vitesse-vsc73xx.h"
33 #define VSC73XX_BLOCK_MAC 0x1 /* Subblocks 0-4, 6 (CPU port) */
266 #define IS_7385(a) ((a)->chipid == VSC73XX_CHIPID_ID_7385)
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/Linux-v6.1/Documentation/networking/
Dstatistics.rst1 .. SPDX-License-Identifier: GPL-2.0
14 - standard interface statistics based on
16 - protocol-specific statistics; and
17 - driver-defined statistics available via ethtool.
20 -----------------------------
25 $ ip -s -s link show dev ens4u1u1
38 Note that `-s` has been specified twice to see all members of
40 If `-s` is specified once the detailed errors won't be shown.
42 `ip` supports JSON formatting via the `-j` option.
44 Protocol-specific statistics
[all …]
/Linux-v6.1/drivers/net/wireless/intel/iwlwifi/fw/api/
Dd3.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
9 #include <iwl-trans.h>
12 * enum iwl_d0i3_flags - d0i3 flags
20 * enum iwl_d3_wakeup_flags - D3 manager wakeup flags
28 * struct iwl_d3_manager_config - D3 manager configuration command
45 * enum iwl_d3_proto_offloads - enabled protocol offloads
68 * struct iwl_proto_offload_cmd_common - ARP/NS offload common part
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