[PATCH v2 5/5] ftrace: Use preemption model accessors for trace header printout
Valentin Schneider
valentin.schneider at arm.com
Thu Nov 11 07:24:48 AEDT 2021
Per PREEMPT_DYNAMIC, checking CONFIG_PREEMPT doesn't tell you the actual
preemption model of the live kernel. Use the newly-introduced accessors
instead.
Signed-off-by: Valentin Schneider <valentin.schneider at arm.com>
---
kernel/trace/trace.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7896d30d90f7..71f293569ed0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4271,17 +4271,11 @@ print_trace_header(struct seq_file *m, struct trace_iterator *iter)
entries,
total,
buf->cpu,
-#if defined(CONFIG_PREEMPT_NONE)
- "server",
-#elif defined(CONFIG_PREEMPT_VOLUNTARY)
- "desktop",
-#elif defined(CONFIG_PREEMPT)
- "preempt",
-#elif defined(CONFIG_PREEMPT_RT)
- "preempt_rt",
-#else
+ is_preempt_none() ? "server" :
+ is_preempt_voluntary() ? "desktop" :
+ is_preempt_full() ? "preempt" :
+ is_preempt_rt() ? "preempt_rt" :
"unknown",
-#endif
/* These are reserved for later use */
0, 0, 0, 0);
#ifdef CONFIG_SMP
--
2.25.1
More information about the Linuxppc-dev
mailing list