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/openbmc/linux/tools/perf/pmu-events/arch/x86/rocketlake/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE transitions count.",
24 …"PublicDescription": "Counts the number of Decode Stream Buffer (DSB a.k.a. Uop Cache)-to-MITE spe…
29 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
32 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
43 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
54 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
92 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/tigerlake/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE transitions count.",
24 …"PublicDescription": "Counts the number of Decode Stream Buffer (DSB a.k.a. Uop Cache)-to-MITE spe…
29 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
32 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
43 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
54 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
92 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/icelake/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE transitions count.",
24 …"PublicDescription": "Counts the number of Decode Stream Buffer (DSB a.k.a. Uop Cache)-to-MITE spe…
29 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
32 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
43 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
54 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
92 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/icelakex/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE transitions count.",
24 …"PublicDescription": "Counts the number of Decode Stream Buffer (DSB a.k.a. Uop Cache)-to-MITE spe…
29 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
32 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
43 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
54 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
92 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/sapphirerapids/
H A Dfrontend.json6 …"PublicDescription": "Number of times the front-end is resteered when it finds a branch instructio…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
26 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
29 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
40 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
51 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
89 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
95 …ter an interval where the front-end delivered no uops for a period of at least 1 cycle which was n…
100 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
106 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
[all …]
/openbmc/qemu/docs/interop/
H A Dvhost-user.rst4 Vhost-user Protocol
11 version 2 or later. See the COPYING file in the top-level
26 The protocol defines 2 sides of the communication, *front-end* and
27 *back-end*. The *front-end* is the application that shares its virtqueues, in
28 our case QEMU. The *back-end* is the consumer of the virtqueues.
30 In the current implementation QEMU is the *front-end*, and the *back-end*
33 or a block device back-end processing read & write to a virtual
34 disk. In order to facilitate interoperability between various back-end
38 The *front-end* and *back-end* can be either a client (i.e. connecting) or
42 --------------------------------------
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/openbmc/linux/tools/perf/pmu-events/arch/x86/alderlake/
H A Dfrontend.json15 …"PublicDescription": "Number of times the front-end is resteered when it finds a branch instructio…
24 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
38 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
41 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
53 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
65 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
107 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
113 …ter an interval where the front-end delivered no uops for a period of at least 1 cycle which was n…
119 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
125 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/meteorlake/
H A Dfrontend.json15 …"PublicDescription": "Number of times the front-end is resteered when it finds a branch instructio…
24 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
38 "BriefDescription": "DSB-to-MITE switch true penalty cycles.",
41 …"PublicDescription": "Decode Stream Buffer (DSB) is a Uop-cache that holds translations of previou…
73 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
85 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
136 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
142 …ter an interval where the front-end delivered no uops for a period of at least 1 cycle which was n…
148 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
154 … after an interval where the front-end delivered no uops for a period of 128 cycles which was not …
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/cascadelakex/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switches",
22 …e Decode Stream Buffer (DSB)-to-MITE switches including all misses because of missing Decode Strea…
27 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
30-to-MITE switch true penalty cycles. These cycles do not include uops routed through because of th…
41 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
52 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
88 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/skylake/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switches",
22 …e Decode Stream Buffer (DSB)-to-MITE switches including all misses because of missing Decode Strea…
27 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
30-to-MITE switch true penalty cycles. These cycles do not include uops routed through because of th…
41 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
52 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
88 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/skylakex/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 …"PublicDescription": "Counts the number of times the front-end is resteered when it finds a branch…
14 …e number of prefixes in a 16B-line. This may result in a three-cycle penalty for each LCP (Length …
19 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switches",
22 …e Decode Stream Buffer (DSB)-to-MITE switches including all misses because of missing Decode Strea…
27 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
30-to-MITE switch true penalty cycles. These cycles do not include uops routed through because of th…
41 …Instructions that experienced DSB (Decode stream buffer i.e. the decoded instruction-cache) miss.",
52 …e stream buffer i.e. the decoded instruction-cache) miss. Critical means stalls were exposed to th…
88 "BriefDescription": "Retired instructions after front-end starvation of at least 1 cycle",
[all …]
/openbmc/qemu/include/chardev/
H A Dchar-fe.h5 #include "qemu/main-loop.h"
11 * struct CharBackend - back end as seen by front end
12 * @fe_is_open: the front end is ready for IO
30 * Initializes a front end for the given CharBackend and
86 * any of the handler is non-NULL
89 * Set the front end char handlers. The front end takes the focus if
90 * any of the handler is non-NULL.
121 * Take the focus (if the front end is muxed).
164 * @is_open: the front end open status
166 * This is an indication that the front end is ready (or not) to begin
[all …]
H A Dchar.h4 #include "qapi/qapi-types-char.h"
23 CHR_EVENT_MUX_IN, /* mux-focus was set to this terminal */
24 CHR_EVENT_MUX_OUT, /* mux-focus will move on */
68 /* used to coordinate the chardev-change special-case: */
77 * @opts: see qemu-config.c for a list of valid options
171 * Determine how much data the front end can currently accept. This function
172 * returns the number of bytes the front end can accept. If it returns 0, the
173 * front end cannot receive data at the moment. The function must be polled
176 * Returns: the number of bytes the front end can receive via @qemu_chr_be_write
182 * @buf: a buffer to receive data from the front end
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/openbmc/linux/tools/perf/pmu-events/arch/x86/silvermont/
H A Dfrontend.json6front end is resteered, mainly when the Branch Prediction Unit cannot provide a correct prediction…
14front end is resteered, mainly when the Branch Prediction Unit cannot provide a correct prediction…
22front end is resteered, mainly when the Branch Prediction Unit cannot provide a correct prediction…
59 …s entered into a ucode flow in the FEC. Includes inserted flows due to front-end detected faults …
62 …e most common case that this counts is when a micro-coded instruction is encountered by the front
H A Dpipeline.json96 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
104 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
113 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
122 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
131 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
140 …he processor predicts that the branch would be taken, but it is not, or vice-versa. When the misp…
184 … For instructions that consist of multiple micro-ops, this event counts exactly once, as the last …
192 … For instructions that consist of multiple micro-ops, this event counts the retirement of the last…
199front end of the machine is notified that it must restart, so no more instructions will be decoded…
204 "BriefDescription": "Self-Modifying Code detected",
[all …]
/openbmc/linux/Documentation/admin-guide/
H A Dpstore-blk.rst1 .. SPDX-License-Identifier: GPL-2.0
7 ------------
10 block device and non-block device before the system crashes. You can get
13 mount -t pstore pstore /sys/fs/pstore
17 ---------------------
27 Configurations for driver are all about block device and non-block device,
31 -----------------------
51 #. /dev/<disk_name><decimal> represents the device number of partition - device
53 #. /dev/<disk_name>p<decimal> - same as the above; this form is used when disk
60 #. PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF represents the unique id of
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/goldmont/
H A Dpipeline.json214 …ocation is stalled waiting for a mispredicted jump to retire or other branch-like conditions (e.g.…
222 …ource in the backend. Including but not limited to resources such as the Re-order Buffer (ROB), r…
287 "BriefDescription": "Self-Modifying Code detected",
290 …ction and has to perform a machine clear because of that modification. Self-modifying code (SMC) …
295 "BriefDescription": "Uops issued to the back end per cycle",
298front end and allocated into the back end of the machine. This event counts uops that retire as w…
302 "BriefDescription": "Uops requested but not-delivered to the back-end per cycle",
305front-end inefficiencies. I.e. when front-end of the machine is not delivering uops to the back-en…
330 …ued by the micro-sequencer (MS). Counts both the uops from a micro-coded instruction, and the uop…
/openbmc/linux/tools/perf/pmu-events/arch/x86/goldmontplus/
H A Dpipeline.json205 "BriefDescription": "Instructions retired - using Reduced Skid PEBS feature",
223 …ocation is stalled waiting for a mispredicted jump to retire or other branch-like conditions (e.g.…
231 …ource in the backend. Including but not limited to resources such as the Re-order Buffer (ROB), r…
299 …r of times that the machines clears due to a page fault. Covers both I-side and D-side(Loads/Store…
304 "BriefDescription": "Self-Modifying Code detected",
307 …ction and has to perform a machine clear because of that modification. Self-modifying code (SMC) …
312 "BriefDescription": "Uops issued to the back end per cycle",
315front end and allocated into the back end of the machine. This event counts uops that retire as w…
319 "BriefDescription": "Uops requested but not-delivered to the back-end per cycle",
322front-end inefficiencies. I.e. when front-end of the machine is not delivering uops to the back-en…
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/haswellx/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 "PublicDescription": "Number of front end re-steers due to BPU misprediction.",
11 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
25 … "BriefDescription": "Cycles where a code fetch is stalled due to L1 instruction-cache miss.",
32 … "BriefDescription": "Cycles where a code fetch is stalled due to L1 instruction-cache miss.",
136 …s event counts cycles during which the microcode sequencer assisted the Front-end in delivering uo…
186 …"PublicDescription": "This event counts uops delivered by the Front-end with the assistance of the…
195Front-end to the Resource Allocation Table (RAT) while the Back-end of the processor is not stalle…
205Front-end allocated exactly zero uops to the Resource Allocation Table (RAT) while the Back-end of…
229 "BriefDescription": "Cycles with less than 2 uops delivered by the front end.",
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/haswell/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
6 "PublicDescription": "Number of front end re-steers due to BPU misprediction.",
11 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
25 … "BriefDescription": "Cycles where a code fetch is stalled due to L1 instruction-cache miss.",
32 … "BriefDescription": "Cycles where a code fetch is stalled due to L1 instruction-cache miss.",
136 …s event counts cycles during which the microcode sequencer assisted the Front-end in delivering uo…
186 …"PublicDescription": "This event counts uops delivered by the Front-end with the assistance of the…
195Front-end to the Resource Allocation Table (RAT) while the Back-end of the processor is not stalle…
205Front-end allocated exactly zero uops to the Resource Allocation Table (RAT) while the Back-end of…
229 "BriefDescription": "Cycles with less than 2 uops delivered by the front end.",
[all …]
/openbmc/linux/drivers/media/i2c/
H A Dccs-pll.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * drivers/media/i2c/ccs-pll.h
17 /* CSI-2 or CCP-2 */
37 * struct ccs_pll_branch_fr - CCS PLL configuration (front)
39 * A single branch front-end of the CCS PLL tree.
41 * @pre_pll_clk_div: Pre-PLL clock divisor
54 * struct ccs_pll_branch_bk - CCS PLL configuration (back)
56 * A single branch back-end of the CCS PLL tree.
71 * struct ccs_pll - Full CCS PLL configuration
78 * @csi2: CSI-2 related parameters
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/openbmc/linux/include/media/
H A Ddemux.h4 * The Kernel Digital TV Demux kABI defines a driver-internal interface for
5 * registering low-level, hardware specific driver to a hardware independent
64 * enum ts_filter_type - filter type bitmap for dmx_ts_feed.set\(\)
69 * @TS_DECODER: Send stream to built-in decoder (if present).
81 * struct dmx_ts_feed - Structure that contains a TS feed filter
83 * @is_filtering: Set to non-zero when filtering in progress
112 * struct dmx_section_filter - Structure that describes a section filter
120 * @parent: Back-pointer to struct dmx_section_feed.
139 * struct dmx_section_feed - Structure that contains a section feed filter
141 * @is_filtering: Set to non-zero when filtering in progress
[all …]
/openbmc/linux/tools/perf/pmu-events/arch/x86/jaketown/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
10 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switches.",
17 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
20-end cannot accept new micro-ops. The penalty for these switches is potentially several cycles o…
141front-end in delivering uops. Microcode assists are used for complex instructions or scenarios th…
196-end per cycle, per thread, when the back-end was not stalled. In the ideal case 4 uops can be de…
218 "BriefDescription": "Cycles when 1 or more uops were delivered to the by the front end.",
235 "BriefDescription": "Cycles with less than 2 uops delivered by the front end.",
243 "BriefDescription": "Cycles with less than 3 uops delivered by the front end.",
/openbmc/linux/tools/perf/pmu-events/arch/x86/sandybridge/
H A Dfrontend.json3front end is resteered, mainly when the BPU cannot provide a correct prediction and this is correc…
10 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switches.",
17 "BriefDescription": "Decode Stream Buffer (DSB)-to-MITE switch true penalty cycles.",
20-end cannot accept new micro-ops. The penalty for these switches is potentially several cycles o…
141front-end in delivering uops. Microcode assists are used for complex instructions or scenarios th…
196-end per cycle, per thread, when the back-end was not stalled. In the ideal case 4 uops can be de…
218 "BriefDescription": "Cycles when 1 or more uops were delivered to the by the front end.",
235 "BriefDescription": "Cycles with less than 2 uops delivered by the front end.",
243 "BriefDescription": "Cycles with less than 3 uops delivered by the front end.",
/openbmc/qemu/include/hw/virtio/
H A Dvhost.h4 #include "hw/virtio/vhost-backend.h"
74 * struct vhost_dev - common vhost_dev structure
93 /* if non-zero, minimum required value for max_queues */
101 * @acked_features: final negotiated features with front-end driver
114 * @protocol_features: is the vhost-user only feature set by
150 * vhost_dev_init() - initialise the vhost interface
152 * @opaque: opaque ptr passed to backend (vhost/vhost-user/vdpa)
162 * Return: 0 on success, non-zero on error while setting errp.
169 * vhost_dev_cleanup() - tear down and cleanup vhost interface
179 * vhost_dev_enable_notifiers() - enable event notifiers
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