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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 12 Jan 2021 21:01:38 +0100
Subject: [PATCH 3/3] tracing: Remove NULL check from current in
tracing_generic_entry_update().
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.8-rt24.tar.xz
I can't imagine when or why `current' would return a NULL pointer. This
check was added in commit
72829bc3d63cd ("ftrace: move enums to ftrace.h and make helper function global")
but it doesn't give me hint why it was needed.
Assume `current' never returns a NULL pointer and remove the check.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
include/linux/trace_events.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -152,10 +152,8 @@ static inline void tracing_generic_entry
unsigned short type,
unsigned int trace_ctx)
{
- struct task_struct *tsk = current;
-
entry->preempt_count = trace_ctx & 0xff;
- entry->pid = (tsk) ? tsk->pid : 0;
+ entry->pid = current->pid;
entry->type = type;
entry->flags = trace_ctx >> 16;
}
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