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/openbmc/linux/tools/perf/Documentation/
H A Dperf-probe.txt1 perf-probe(1)
6 perf-probe - Define new dynamic tracepoints
11 'perf probe' [options] --add='PROBE' [...]
13 'perf probe' [options] PROBE
15 'perf probe' [options] --del='[GROUP:]EVENT' [...]
17 'perf probe' --list[=[GROUP:]EVENT]
19 'perf probe' [options] --line='LINE'
21 'perf probe' [options] --vars='PROBEPOINT'
23 'perf probe' [options] --funcs
25 'perf probe' [options] --definition='PROBE' [...]
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/openbmc/linux/Documentation/trace/
H A Dkprobes.rst16 6. Probe Overhead
38 any instruction in the kernel. A return probe fires when a specified
45 the probe is to be inserted and what handler is to be called when
46 the probe is hit.
87 Since kprobes can probe into a running kernel code, it can change the
107 How Does a Return Probe Work?
112 probe is hit, Kprobes saves a copy of the return address, and replaces
118 passes to the trampoline and that probe is hit. Kprobes' trampoline
138 zero when the return probe is registered, and is incremented every
140 object available for establishing the return probe.
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H A Dkprobetrace.rst10 this is based on kprobes (kprobe and kretprobe). So it can probe wherever
11 kprobes can probe (this means, all functions except those with
19 current_tracer. Instead of that, add probe points via
31 p[:[GRP/][EVENT]] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS] : Set a probe
32 r[MAXACTIVE][:[GRP/][EVENT]] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe
33 p[:[GRP/][EVENT]] [MOD:]SYM[+0]%return [FETCHARGS] : Set a return probe
34 -:[GRP/][EVENT] : Clear a probe
40 SYM[+offs] : Symbol+offset where the probe is inserted.
42 MEMADDR : Address where the probe is inserted.
47 FETCHARGS : Arguments. Each probe can have up to 128 args.
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H A Dtracepoints.rst10 connect probe functions to them and provides some examples of probe
16 A tracepoint placed in code provides a hook to call a function (probe)
17 that you can provide at runtime. A tracepoint can be "on" (a probe is
18 connected to it) or "off" (no probe is attached). When a tracepoint is
93 Connecting a function (probe) to a tracepoint is done by providing a
94 probe (function to call) for the specific tracepoint through
95 register_trace_subsys_eventname(). Removing a probe is done through
96 unregister_trace_subsys_eventname(); it will remove the probe.
100 the probe. This, and the fact that preemption is disabled around the
101 probe call, make sure that probe removal and module unload are safe.
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/openbmc/linux/fs/afs/
H A Dfs_probe.c19 * Start the probe polling timer. We have to supply it with an inc on the
43 bool responded = server->probe.responded; in afs_finished_fs_probe()
59 * Handle the completion of a probe.
72 * Handle inability to send a probe due to ENOMEM when trying to allocate a
87 server->probe.local_failure = true; in afs_fs_probe_not_done()
88 if (server->probe.error == 0) in afs_fs_probe_not_done()
89 server->probe.error = -ENOMEM; in afs_fs_probe_not_done()
115 server->probe.error = 0; in afs_fileserver_probe_result()
118 if (!server->probe.responded) { in afs_fileserver_probe_result()
119 server->probe.abort_code = call->abort_code; in afs_fileserver_probe_result()
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H A Dvl_probe.c20 if (!(server->probe.flags & AFS_VLSERVER_PROBE_RESPONDED)) { in afs_finished_vl_probe()
30 * Handle the completion of a probe RPC call.
63 server->probe.error = 0; in afs_vlserver_probe_result()
66 if (!(server->probe.flags & AFS_VLSERVER_PROBE_RESPONDED)) { in afs_vlserver_probe_result()
67 server->probe.abort_code = call->abort_code; in afs_vlserver_probe_result()
68 server->probe.error = ret; in afs_vlserver_probe_result()
76 server->probe.flags |= AFS_VLSERVER_PROBE_LOCAL_FAILURE; in afs_vlserver_probe_result()
77 if (server->probe.error == 0) in afs_vlserver_probe_result()
78 server->probe.error = ret; in afs_vlserver_probe_result()
93 if (!(server->probe.flags & AFS_VLSERVER_PROBE_RESPONDED) && in afs_vlserver_probe_result()
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/openbmc/linux/drivers/base/
H A Dmap.c20 struct probe { struct
21 struct probe *next; argument
33 struct module *module, kobj_probe_t *probe, in kobj_map() argument
39 struct probe *p; in kobj_map()
44 p = kmalloc_array(n, sizeof(struct probe), GFP_KERNEL); in kobj_map()
50 p->get = probe; in kobj_map()
58 struct probe **s = &domain->probes[index % 255]; in kobj_map()
73 struct probe *found = NULL; in kobj_unmap()
80 struct probe **s; in kobj_unmap()
82 struct probe *p = *s; in kobj_unmap()
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H A Ddd.c36 * Deferred Probe infrastructure.
38 * Sometimes driver probe order matters, but the kernel doesn't always have
43 * request probing to be deferred by returning -EPROBE_DEFER from its probe hook
45 * Deferred probe maintains two lists of devices, a pending list and an active
47 * pending list. A successful driver probe will trigger moving all devices
60 /* Save the async probe drivers' name from kernel cmdline */
88 * bus_probe_device() to re-attempt the probe. The loop continues in deferred_probe_work_func()
109 * Drop the mutex while probing each device; the probe path may in deferred_probe_work_func()
118 * probe makes that very unsafe. in deferred_probe_work_func()
161 * list and schedules the deferred probe workqueue to process them. It
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/openbmc/entity-manager/src/
H A Dperform_probe.cpp26 // When an interface passes a probe, also save its D-Bus path with it.
65 lg2::debug("Found probe match on {PATH} {IFACE}", "PATH", path, in probeDbus()
74 // default probe entry point, iterates a list looking for specific types to
75 // call specific probe functions
76 bool probe(const std::vector<std::string>& probeCommand, in probe() function
87 for (const auto& probe : probeCommand) in probe() local
89 FoundProbeTypeT probeType = findProbeType(probe); in probe()
106 // set current value to last, this probe type shouldn't in probe()
120 if (!std::regex_search(probe, match, command)) in probe()
123 << "found probe syntax error " << probe << "\n"; in probe()
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H A Dutils.cpp357 /// \param probe the probe statement to match against
358 /// \param value the property value being matched to a probe
359 /// \return true if the dbusValue matched the probe otherwise false
360 static bool match(const nlohmann::json& probe, const T& value) in match()
362 return probe == value; in match()
372 /// \param probe the probe statement to match against
373 /// \param value the string value being matched to a probe
374 /// \return true if the dbusValue matched the probe otherwise false
375 static bool match(const nlohmann::json& probe, const std::string& value) in match()
377 if (probe.is_string()) in match()
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/openbmc/qemu/target/arm/tcg/
H A Dmte_helper.h22 * @probe: true to merely probe, never taking an exception
37 * (1) probe = true, ra = 0 : pure probe -- we return NULL if the page is not
40 * (2) probe = false, ra = 0 : probe, no fault expected -- the caller guarantees
42 * (3) probe = false, ra != 0 : non-probe -- we will take both memory access
44 * (probe = true, ra != 0 is invalid and will assert.)
49 bool probe, uintptr_t ra);
/openbmc/linux/drivers/net/ethernet/sfc/
H A Def100.c73 netif_dbg(efx, probe, efx->net_dev, in ef100_pci_parse_ef100_entry()
78 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_ef100_entry()
85 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_ef100_entry()
127 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_continue_entry()
137 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_continue_entry()
148 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_continue_entry()
166 netif_err(efx, probe, efx->net_dev, in ef100_pci_parse_continue_entry()
196 netif_dbg(efx, probe, efx->net_dev, in ef100_pci_walk_xilinx_table()
201 netif_err(efx, probe, efx->net_dev, in ef100_pci_walk_xilinx_table()
210 netif_err(efx, probe, efx->net_dev, in ef100_pci_walk_xilinx_table()
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/openbmc/linux/tools/testing/selftests/ftrace/test.d/direct/
H A Dkprobe-direct.tc44 # probe -> direct -> no direct > no probe
50 # probe -> direct -> no probe > no direct
56 # direct -> probe -> no probe > no direct
62 # direct -> probe -> no direct > no noprobe
/openbmc/linux/tools/testing/selftests/bpf/
H A Duprobe_multi.c57 #define PROBE STAP_PROBE(test, usdt); macro
59 #define PROBE10 PROBE PROBE PROBE PROBE PROBE \
60 PROBE PROBE PROBE PROBE PROBE
H A Dsdt.h1 /* <sys/sdt.h> - Systemtap static probe definition macros.
244 Without that assembler support, some combinations of probe placements
404 number of probe arguments is not known until compile time. Since
406 pre-#define SDT_USE_VARIADIC to enable this type of probe.
430 contain the actual assembly code around the probe site.
438 emits the assembly code for "before\nafter", with a probe in between.
439 The probe arguments are the %eax register, and the value of the memory
444 In a GNU C extended asm statement, the probe arguments can be specified
446 macro STAP_PROBE_ASM_OPERANDS gives the C values of these probe arguments,
460 but the probe site is right between "someinsn" and "otherinsn".
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H A Dtest_bpftool.py50 raise IfaceNotFoundError("Could not find any network interface to probe")
84 res = bpftool_json(["feature", "probe", "dev", iface])
95 bpftool_json(["feature", "probe", "kernel"]),
96 bpftool_json(["feature", "probe"]),
120 bpftool_json(["feature", "probe", "kernel", "full"]),
121 bpftool_json(["feature", "probe", "full"]),
142 full_res = bpftool_json(["feature", "probe", "full"])
143 not_full_res = bpftool_json(["feature", "probe"])
172 res = bpftool(["feature", "probe", "macros"])
/openbmc/linux/tools/perf/tests/shell/lib/
H A Dprobe_vfs_getname.sh4 perf probe -l 2>&1 | grep -q probe:vfs_getname
9 perf probe -q -d probe:vfs_getname*
16 …line=$(perf probe -L getname_flags 2>&1 | grep -E 'result.*=.*filename;' | sed -r 's/[[:space:]]+(…
17 perf probe -q "vfs_getname=getname_flags:${line} pathname=result->name:string" || \
18 perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring"
/openbmc/linux/kernel/
H A Dtracepoint.c176 printk(KERN_DEBUG "Probe %d : %p\n", i, funcs[i].func); in debug_print_probes()
184 int iter_probes; /* Iterate over old probe array. */ in func_add()
204 /* + 2 : one for new probe, one for NULL func */ in func_add()
255 * If probe is NULL, then nr_probes = nr_del = 0, and then the in func_remove()
321 * Add the probe function to a tracepoint.
346 * that the new probe callbacks array is consistent before setting in tracepoint_add_func()
391 * Remove a probe function from a tracepoint.
463 * tracepoint_probe_register_prio_may_exist - Connect a probe to a tracepoint with priority
465 * @probe: probe handler
472 int tracepoint_probe_register_prio_may_exist(struct tracepoint *tp, void *probe, in tracepoint_probe_register_prio_may_exist() argument
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/openbmc/linux/tools/perf/tests/shell/
H A Drecord+script_probe_vfs_getname.sh2 # Use vfs_getname probe to get syscall args filenames
4 # Uses the 'perf test shell' library to add probe:vfs_getname to the system
6 # checks that that was captured by the vfs_getname probe in the generated
12 . "$(dirname "$0")/lib/probe.sh"
21 skip_no_probe_record_support "probe:vfs_getname*"
23 perf record -o ${perfdata} -e probe:vfs_getname\* touch $file
29 …grep -E " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname[_0-9]*: +\([[:xdigit:]]+\…
/openbmc/linux/drivers/gpu/drm/i915/
H A DKconfig60 string "Force probe i915 for selected Intel hardware IDs"
66 Force probe the i915 driver for Intel graphics devices that are
72 It can also be used to block the probe of recognized and fully
75 Use "" to disable force probe. If in doubt, use this.
77 Use "<pci-id>[,<pci-id>,...]" to force probe the i915 for listed
80 Use "*" to force probe the driver for all known devices. Not
83 Use "!" right before the ID to block the probe of the device. For
84 example, "4500,!4571" forces the probe of 4500 and blocks the probe of
87 Use "!*" to block the probe of the driver for all known devices.
/openbmc/openbmc/poky/meta/recipes-kernel/systemtap/systemtap/
H A D0001-staprun-address-ncurses-6.3-failures.patch36 json_object *probe, *field;
37 probe = json_object_array_get_idx(jso_probe_list, i);
38 json_object_object_get_ex(probe, "index", &field);
41 json_object_object_get_ex(probe, "state", &field);
44 json_object_object_get_ex(probe, "hits", &field);
47 json_object_object_get_ex(probe, "min", &field);
50 json_object_object_get_ex(probe, "avg", &field);
53 json_object_object_get_ex(probe, "max", &field);
57 json_object_object_get_ex(probe, "name", &field);
/openbmc/qemu/scripts/
H A Dqemu-trace-stap66 for probe in args.probes:
67 probes.append("probe %s.%s {}" % (prefix, probe))
69 print("At least one probe pattern must be specified")
75 script = """probe begin { print("Running script, <Ctrl>-c to quit\\n") } """ + script
114 for probe in args.probes:
115 print_probes(args.verbose, probe)
143 runparser.add_argument("probes", help="Probe names or wildcards",
146 listparser = subparser.add_parser("list", help="List probe points",
160 listparser.add_argument("probes", help="Probe names or wildcards",
/openbmc/linux/tools/perf/
H A Dbuiltin-probe.c3 * builtin-probe.c
5 * Builtin probe command: Set up probe events by C expression
28 #include "util/probe-finder.h"
29 #include "util/probe-event.h"
30 #include "util/probe-file.h"
58 pr_debug("probe-definition(%d): %s\n", params->nevents, str); in parse_probe_event()
74 /* Parse a perf-probe command into event */ in parse_probe_event()
396 pr_info("\nperf is not linked with libtraceevent, to use the new probe you can use tracefs:\n\n"); in perf_add_probe_events()
401 pr_info("\tBefore removing the probe, echo 0 > events/%s/%s/enable\n", group, event); in perf_add_probe_events()
520 "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]", in __cmd_probe()
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/openbmc/u-boot/net/
H A Dlink_local.c44 PROBE = 0, enumerator
120 state = PROBE; in link_local_start()
133 case PROBE: in link_local_timeout()
134 /* timeouts in the PROBE state mean no conflicting ARP packets in link_local_timeout()
140 debug_cond(DEBUG_LL_STATE, "probe/%u %s@%pI4\n", in link_local_timeout()
200 state = PROBE; in link_local_timeout()
275 * Check if packet is an ARP probe by checking for a null source IP in link_local_receive_arp()
278 * during probe. in link_local_receive_arp()
291 case PROBE: in link_local_receive_arp()
297 state = PROBE; in link_local_receive_arp()
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/openbmc/linux/drivers/devfreq/event/
H A Dexynos-nocp.c3 * exynos-nocp.c - Exynos NoC (Network On Chip) Probe support
30 * The devfreq-event ops structure for nocp probe.
37 /* Disable NoC probe */ in exynos_nocp_set_event()
41 dev_err(nocp->dev, "failed to disable the NoC probe device\n"); in exynos_nocp_set_event()
124 /* Enable NoC probe */ in exynos_nocp_set_event()
134 /* Reset NoC probe */ in exynos_nocp_set_event()
137 dev_err(nocp->dev, "Failed to reset NoC probe device\n"); in exynos_nocp_set_event()
176 dev_err(nocp->dev, "Failed to read the counter of NoC probe device\n"); in exynos_nocp_get_event()
272 pr_info("exynos-nocp: new NoC Probe device registered: %s\n", in exynos_nocp_probe()
288 .probe = exynos_nocp_probe,
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