From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Masami Hiramatsu <mhiramat@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Hemant Kumar <hemant@linux.vnet.ibm.com>,
Naohiro Aota <naohiro.aota@hgst.com>,
Peter Zijlstra <peterz@infradead.org>,
Wang Nan <wangnan0@huawei.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 27/35] ftrace: probe: Add README entries for k/uprobe-events
Date: Tue, 23 Aug 2016 18:03:28 -0300 [thread overview]
Message-ID: <1471986216-18390-28-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1471986216-18390-1-git-send-email-acme@kernel.org>
From: Masami Hiramatsu <mhiramat@kernel.org>
Add README entries for kprobe-events and uprobe-events.
This allows user to check what options can be acceptable
for running kernel.
E.g. perf tools can choose correct types for the kernel.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Naohiro Aota <naohiro.aota@hgst.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/147151069524.12957.12957179170304055028.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
kernel/trace/trace.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index dade4c9559cc..1e2ce3b52e51 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4123,6 +4123,30 @@ static const char readme_msg[] =
"\t\t\t traces\n"
#endif
#endif /* CONFIG_STACK_TRACER */
+#ifdef CONFIG_KPROBE_EVENT
+ " kprobe_events\t\t- Add/remove/show the kernel dynamic events\n"
+ "\t\t\t Write into this file to define/undefine new trace events.\n"
+#endif
+#ifdef CONFIG_UPROBE_EVENT
+ " uprobe_events\t\t- Add/remove/show the userspace dynamic events\n"
+ "\t\t\t Write into this file to define/undefine new trace events.\n"
+#endif
+#if defined(CONFIG_KPROBE_EVENT) || defined(CONFIG_UPROBE_EVENT)
+ "\t accepts: event-definitions (one definition per line)\n"
+ "\t Format: p|r[:[<group>/]<event>] <place> [<args>]\n"
+ "\t -:[<group>/]<event>\n"
+#ifdef CONFIG_KPROBE_EVENT
+ "\t place: [<module>:]<symbol>[+<offset>]|<memaddr>\n"
+#endif
+#ifdef CONFIG_UPROBE_EVENT
+ "\t place: <path>:<offset>\n"
+#endif
+ "\t args: <name>=fetcharg[:type]\n"
+ "\t fetcharg: %<register>, @<address>, @<symbol>[+|-<offset>],\n"
+ "\t $stack<index>, $stack, $retval, $comm\n"
+ "\t type: s8/16/32/64, u8/16/32/64, x8/16/32/64, string,\n"
+ "\t b<bit-width>@<bit-offset>/<container-size>\n"
+#endif
" events/\t\t- Directory containing all trace event subsystems:\n"
" enable\t\t- Write 0/1 to enable/disable tracing of all events\n"
" events/<system>/\t- Directory containing all trace events for <system>:\n"
--
2.7.4
next prev parent reply other threads:[~2016-08-23 21:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 21:03 [GIT PULL 00/35] perf/core improvements and fixes Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 01/35] tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macros Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 02/35] perf bench numa: Use NSEC_PER_U?SEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 03/35] perf sched: Use linux/time64.h Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 04/35] perf timechart: Use NSEC_PER_U?SEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 05/35] perf bench sched-pipe: Use linux/time64.h, USEC_PER_SEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 06/35] perf stat: Use *SEC_PER_*SEC macros Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 07/35] perf bench mem: Use USEC_PER_SEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 08/35] perf bench sched-messaging: Use USEC_PER_MSEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 09/35] perf record: " Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 10/35] perf kvm: Use NSEC_PER_USEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 11/35] perf bench futex: " Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 12/35] perf top: Use MSEC_PER_SEC Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 13/35] perf hists: Introduce nr_header_lines into struct perf_hpp_list Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 14/35] perf hists: Add line argument into perf_hpp_fmt's header callback Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 15/35] perf tools tui: Display multiple header lines Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 16/35] perf tools stdio: " Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 17/35] perf hists: Add support for header span Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 18/35] perf disassemble: Move check for kallsyms + !kcore Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 19/35] perf disassemble: Simplify logic for picking the filename to disassemble Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 20/35] perf disassemble: Extract logic to find file to pass to objdump to a separate function Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 21/35] tools: Copy coresight-pmu.h header file needed by perf tools Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 22/35] perf report: Allow configuring the default sort order in ~/.perfconfig Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 23/35] perf tools: Use __weak definition from linux/compiler.h Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 24/35] perf tools: Skip running the feature tests for 'make install-doc' Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 25/35] perf hists browser: Remove superfluous null check on map Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 26/35] ftrace: kprobe: uprobe: Add x8/x16/x32/x64 for hexadecimal types Arnaldo Carvalho de Melo
2016-08-23 21:03 ` Arnaldo Carvalho de Melo [this message]
2016-08-23 21:03 ` [PATCH 28/35] perf probe: Add supported for type casting by the running kernel Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 29/35] perf probe: Support hexadecimal casting Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 30/35] perf probe: Use hexadecimal type by default if possible Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 31/35] ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 32/35] perf tools: Fix typo: "ehough" -> "enough" Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 33/35] perf test bpf: " Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 34/35] perf " Arnaldo Carvalho de Melo
2016-08-23 21:03 ` [PATCH 35/35] perf record: Fix spelling mistake "Finshed" -> "Finished" Arnaldo Carvalho de Melo
2016-08-24 9:09 ` [GIT PULL 00/35] perf/core improvements and fixes Ingo Molnar
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