Masami Hiramatsu (Google) 3a1a229712 tracing/probes: Add symstr type for dynamic events ... [ Upstream commit b26a124cbf ] Add 'symstr' type for storing the kernel symbol as a string data instead of the symbol address. This allows us to filter the events by wildcard symbol name. e.g. # echo 'e:wqfunc workqueue.workqueue_execute_start symname=$function:symstr' >> dynamic_events # cat events/eprobes/wqfunc/format name: wqfunc ID: 2110 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1; signed:0; field:int common_pid; offset:4; size:4; signed:1; field:__data_loc char[] symname; offset:8; size:4; signed:1; print fmt: " symname=\"%s\"", __get_str(symname) Note that there is already 'symbol' type which just change the print format (so it still stores the symbol address in the tracing ring buffer.) On the other hand, 'symstr' type stores the actual "symbol+offset/size" data as a string. Link: https://lore.kernel.org/all/166679930847.1528100.4124308529180235965.stgit@devnote3/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Stable-dep-of: 66bcf65d6c ("tracing/probes: Fix to avoid double count of the string length on the array") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-08-03 10:22:30 +02:00
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coresight	Documentation: coresight: Fix documentation issue	2022-01-27 11:05:20 +01:00
postprocess
boottime-trace.rst	Documentation: tracing: Add histogram syntax to boot-time tracing	2021-08-16 11:37:21 -04:00
events-kmem.rst
events-msr.rst
events-nmi.rst
events-power.rst
events.rst	tracing: Add ustring operation to filtering string pointers	2022-03-08 19:12:33 +01:00
ftrace-design.rst
ftrace-uses.rst
ftrace.rst	attr: use consistent sgid stripping checks	2023-03-17 08:49:01 +01:00
function-graph-fold.vim
histogram-design.rst
histogram.rst	tracing/histogram: Update document for KEYS_MAX size	2022-11-10 18:15:38 +01:00
hwlat_detector.rst	trace/hwlat: Implement the per-cpu mode	2021-06-25 18:23:22 -04:00
index.rst	trace: Add timerlat tracer	2021-06-25 19:57:24 -04:00
intel_th.rst
kprobes.rst	kprobes: Remove kprobe::fault_handler	2021-06-01 16:00:08 +02:00
kprobetrace.rst	tracing/probes: Add symstr type for dynamic events	2023-08-03 10:22:30 +02:00
mmiotrace.rst
osnoise-tracer.rst	Documentation: Fix a typo on trace/osnoise-tracer	2021-06-28 14:12:27 -04:00
ring-buffer-design.rst
stm.rst
sys-t.rst
timerlat-tracer.rst	trace: Add timerlat tracer	2021-06-25 19:57:24 -04:00
tracepoint-analysis.rst
tracepoints.rst
uprobetracer.rst