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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 01:51:28 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 01:51:28 +0300 |
| commit | fefa636d815975b34afc45f50852a2810fb23ba9 (patch) | |
| tree | 5a48fc557bfc2237fbf6dae3a2c929b991315f87 /Documentation/trace/kprobetrace.rst | |
| parent | 2d0f6b0aab9afbd6fdf3514cb4acc249d7aebf9c (diff) | |
| parent | 6107742d15832011cd0396d821f3225b52551f1f (diff) | |
| download | linux-fefa636d815975b34afc45f50852a2810fb23ba9.tar.xz | |
Merge tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"Updates for tracing and bootconfig:
- Add support for "bool" type in synthetic events
- Add per instance tracing for bootconfig
- Support perf-style return probe ("SYMBOL%return") in kprobes and
uprobes
- Allow for kprobes to be enabled earlier in boot up
- Added tracepoint helper function to allow testing if tracepoints
are enabled in headers
- Synthetic events can now have dynamic strings (variable length)
- Various fixes and cleanups"
* tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (58 commits)
tracing: support "bool" type in synthetic trace events
selftests/ftrace: Add test case for synthetic event syntax errors
tracing: Handle synthetic event array field type checking correctly
selftests/ftrace: Change synthetic event name for inter-event-combined test
tracing: Add synthetic event error logging
tracing: Check that the synthetic event and field names are legal
tracing: Move is_good_name() from trace_probe.h to trace.h
tracing: Don't show dynamic string internals in synthetic event description
tracing: Fix some typos in comments
tracing/boot: Add ftrace.instance.*.alloc_snapshot option
tracing: Fix race in trace_open and buffer resize call
tracing: Check return value of __create_val_fields() before using its result
tracing: Fix synthetic print fmt check for use of __get_str()
tracing: Remove a pointless assignment
ftrace: ftrace_global_list is renamed to ftrace_ops_list
ftrace: Format variable declarations of ftrace_allocate_records
ftrace: Simplify the calculation of page number for ftrace_page->records
ftrace: Simplify the dyn_ftrace->flags macro
ftrace: Simplify the hash calculation
ftrace: Use fls() to get the bits for dup_hash()
...
Diffstat (limited to 'Documentation/trace/kprobetrace.rst')
| -rw-r--r-- | Documentation/trace/kprobetrace.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/trace/kprobetrace.rst b/Documentation/trace/kprobetrace.rst index 10850a9e9af3..b175d88f31eb 100644 --- a/Documentation/trace/kprobetrace.rst +++ b/Documentation/trace/kprobetrace.rst @@ -30,6 +30,7 @@ Synopsis of kprobe_events p[:[GRP/]EVENT] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS] : Set a probe r[MAXACTIVE][:[GRP/]EVENT] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe + p:[GRP/]EVENT] [MOD:]SYM[+0]%return [FETCHARGS] : Set a return probe -:[GRP/]EVENT : Clear a probe GRP : Group name. If omitted, use "kprobes" for it. @@ -37,6 +38,7 @@ Synopsis of kprobe_events based on SYM+offs or MEMADDR. MOD : Module name which has given SYM. SYM[+offs] : Symbol+offset where the probe is inserted. + SYM%return : Return address of the symbol MEMADDR : Address where the probe is inserted. MAXACTIVE : Maximum number of instances of the specified function that can be probed simultaneously, or 0 for the default value |