linux-kernel - [PATCH 4/9] perf docs: use canonical ftrace path

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Message-Id: <20230130181915.1113313-5-zwisler@google.com>
Date:   Mon, 30 Jan 2023 11:19:10 -0700
From:   Ross Zwisler <zwisler@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ross Zwisler <zwisler@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-trace-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org
Subject: [PATCH 4/9] perf docs: use canonical ftrace path

The canonical location for the tracefs filesystem is at /sys/kernel/tracing.

But, from Documentation/trace/ftrace.rst:

  Before 4.1, all ftrace tracing control files were within the debugfs
  file system, which is typically located at /sys/kernel/debug/tracing.
  For backward compatibility, when mounting the debugfs file system,
  the tracefs file system will be automatically mounted at:

  /sys/kernel/debug/tracing

A few spots in the perf docs still refer to this older debugfs path, so
let's update them to avoid confusion.

Signed-off-by: Ross Zwisler <zwisler@...gle.com>
---
 tools/perf/Documentation/perf-list.txt          | 2 +-
 tools/perf/Documentation/perf-script-perl.txt   | 2 +-
 tools/perf/Documentation/perf-script-python.txt | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index 57384a97c04f..6c83459d3192 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -228,7 +228,7 @@ This can be overridden by setting the kernel.perf_event_paranoid
 sysctl to -1, which allows non root to use these events.
 
 For accessing trace point events perf needs to have read access to
-/sys/kernel/debug/tracing, even when perf_event_paranoid is in a relaxed
+/sys/kernel/tracing, even when perf_event_paranoid is in a relaxed
 setting.
 
 TRACING
diff --git a/tools/perf/Documentation/perf-script-perl.txt b/tools/perf/Documentation/perf-script-perl.txt
index fa4f39d305a7..5b479f5e62ff 100644
--- a/tools/perf/Documentation/perf-script-perl.txt
+++ b/tools/perf/Documentation/perf-script-perl.txt
@@ -55,7 +55,7 @@ Traces meant to be processed using a script should be recorded with
 the above option: -a to enable system-wide collection.
 
 The format file for the sched_wakeup event defines the following fields
-(see /sys/kernel/debug/tracing/events/sched/sched_wakeup/format):
+(see /sys/kernel/tracing/events/sched/sched_wakeup/format):
 
 ----
  format:
diff --git a/tools/perf/Documentation/perf-script-python.txt b/tools/perf/Documentation/perf-script-python.txt
index cf4b7f4b625a..6a8581012e16 100644
--- a/tools/perf/Documentation/perf-script-python.txt
+++ b/tools/perf/Documentation/perf-script-python.txt
@@ -319,7 +319,7 @@ So those are the essential steps in writing and running a script.  The
 process can be generalized to any tracepoint or set of tracepoints
 you're interested in - basically find the tracepoint(s) you're
 interested in by looking at the list of available events shown by
-'perf list' and/or look in /sys/kernel/debug/tracing/events/ for
+'perf list' and/or look in /sys/kernel/tracing/events/ for
 detailed event and field info, record the corresponding trace data
 using 'perf record', passing it the list of interesting events,
 generate a skeleton script using 'perf script -g python' and modify the
@@ -449,7 +449,7 @@ Traces meant to be processed using a script should be recorded with
 the above option: -a to enable system-wide collection.
 
 The format file for the sched_wakeup event defines the following fields
-(see /sys/kernel/debug/tracing/events/sched/sched_wakeup/format):
+(see /sys/kernel/tracing/events/sched/sched_wakeup/format):
 
 ----
  format:
-- 
2.39.1.456.gfc5497dd1b-goog