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From 82849886322d7a35b19a0f9cbeaf6a3cc17efcdd Mon Sep 17 00:00:00 2001
From: Anand Je Saipureddy <s.anandje1@gmail.com>
Date: Sat, 23 Jul 2022 12:19:43 +0530
Subject: [PATCH 315/323] ftrace: Fix improper usage of __trace_stack()
function.
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.215-rt107.tar.xz
In kernel/trace/trace_events_trigger.c --> stacktrace_trigger() -->
__trace_stack() is not defined as per the function definition.
With commit edbaaa13a660
("tracing: Merge irqflags + preemt counter, add RT bits")
the irqflags(flags) and preemption counter(preempt_count()) are
now should be evaluated early by tracing_gen_ctx().
This patch replaces the irqflags and preemption counter
with tracing_gen_ctx().
Fixes: 5e8446e3820c ("tracing: Dump stacktrace trigger to the corresponding instance")
Link: https://lore.kernel.org/r/20220723064943.16532-1-s.anandje1@gmail.com
Signed-off-by: Anand Je Saipureddy <s.anandje1@gmail.com>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
---
kernel/trace/trace_events_trigger.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c
index 7f25cc48bc503..64abc66b82e5b 100644
--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -1222,12 +1222,10 @@ stacktrace_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
struct trace_event_file *file = data->private_data;
- unsigned long flags;
- if (file) {
- local_save_flags(flags);
- __trace_stack(file->tr, STACK_SKIP, preempt_count());
- } else
+ if (file)
+ __trace_stack(file->tr, tracing_gen_ctx(), STACK_SKIP);
+ else
trace_dump_stack(STACK_SKIP);
}
--
2.44.0
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