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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 /kernel/trace/trace.c | |
| parent | Merge tag 'trace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace (diff) | |
| download | wireguard-linux-0172afefbfbdd8987787c926b40b68400bd1c3d1.tar.xz wireguard-linux-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 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 3ef047ed9705..be62f0ea1814 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2552,6 +2552,8 @@ unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status) trace_flags |= TRACE_FLAG_NEED_RESCHED; if (test_preempt_need_resched()) trace_flags |= TRACE_FLAG_PREEMPT_RESCHED; + if (IS_ENABLED(CONFIG_ARCH_HAS_PREEMPT_LAZY) && tif_test_bit(TIF_NEED_RESCHED_LAZY)) + trace_flags |= TRACE_FLAG_NEED_RESCHED_LAZY; return (trace_flags << 16) | (min_t(unsigned int, pc & 0xff, 0xf)) | (min_t(unsigned int, migration_disable_value(), 0xf)) << 4; } |