diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2025-11-14 14:22:32 -0500 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-11-14 14:30:55 -0500 |
| commit | 5abb6ccb58f0626a0b7577908bcb698b18812eed (patch) | |
| tree | 32738409767fc34594a2ef1639f4f207ab4c93df /kernel/trace/ftrace.c | |
| parent | 4132886e1b74d031a1de8f0e9bac44056cf57304 (diff) | |
tracing: Have function graph tracer option sleep-time be per instance
Currently the option to have function graph tracer to ignore time spent
when a task is sleeping is global when the interface is per-instance.
Changing the value in one instance will affect the results of another
instance that is also running the function graph tracer. This can lead to
confusing results.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20251114192318.950255167@kernel.org
Fixes: c132be2c4fcc1 ("function_graph: Have the instances use their own ftrace_ops for filtering")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index ab601cd9638b..7c3bbebeec7a 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -862,6 +862,8 @@ static int profile_graph_entry(struct ftrace_graph_ent *trace, return 1; } +bool fprofile_no_sleep_time; + static void profile_graph_return(struct ftrace_graph_ret *trace, struct fgraph_ops *gops, struct ftrace_regs *fregs) @@ -887,7 +889,7 @@ static void profile_graph_return(struct ftrace_graph_ret *trace, calltime = rettime - profile_data->calltime; - if (!fgraph_sleep_time) { + if (fprofile_no_sleep_time) { if (current->ftrace_sleeptime) calltime -= current->ftrace_sleeptime - profile_data->sleeptime; } |