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| author | Thomas Gleixner <tglx@linutronix.de> | 2024-11-22 21:28:49 +0100 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-11-22 17:49:39 -0500 |
| commit | 0172afefbfbdd8987787c926b40b68400bd1c3d1 (patch) | |
| tree | a247a64845343e93b96dbf9e57d1fd40c7016195 /Documentation/trace | |
| parent | 06afb0f36106ecb839c5e2509905e68c1e2677de (diff) | |
| download | lwn-0172afefbfbdd8987787c926b40b68400bd1c3d1.tar.gz lwn-0172afefbfbdd8987787c926b40b68400bd1c3d1.zip | |
tracing: Record task flag NEED_RESCHED_LAZY.
The scheduler added NEED_RESCHED_LAZY scheduling. Record this state as
part of trace flags and expose it in the need_resched field.
Record and expose NEED_RESCHED_LAZY.
[bigeasy: Commit description, documentation bits.]
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20241122202849.7DfYpJR0@linutronix.de
Reviewed-by: Ankur Arora <ankur.a.arora@oracle.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/trace')
| -rw-r--r-- | Documentation/trace/ftrace.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/trace/ftrace.rst b/Documentation/trace/ftrace.rst index 74d5bd801b1a..272464bb7c60 100644 --- a/Documentation/trace/ftrace.rst +++ b/Documentation/trace/ftrace.rst @@ -1033,9 +1033,13 @@ explains which is which. irqs-off: 'd' interrupts are disabled. '.' otherwise. need-resched: + - 'B' all, TIF_NEED_RESCHED, PREEMPT_NEED_RESCHED and TIF_RESCHED_LAZY is set, - 'N' both TIF_NEED_RESCHED and PREEMPT_NEED_RESCHED is set, - 'n' only TIF_NEED_RESCHED is set, - 'p' only PREEMPT_NEED_RESCHED is set, + - 'L' both PREEMPT_NEED_RESCHED and TIF_RESCHED_LAZY is set, + - 'b' both TIF_NEED_RESCHED and TIF_RESCHED_LAZY is set, + - 'l' only TIF_RESCHED_LAZY is set - '.' otherwise. hardirq/softirq: |