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tracing/mmiotrace: Remove reference to unused per CPU data pointer 

The mmiotracer referenced the per CPU array_buffer->data descriptor but
never actually used it. Remove the references to it.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/20250505212234.696945463@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2025-05-05 17:21:05 -04:00 committed by Steven Rostedt (Google)
parent 17f89102fe
commit 6936298393
1 changed files with 2 additions and 10 deletions
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12
kernel/trace/trace_mmiotrace.c
View File

@ -291,7 +291,6 @@ __init static int init_mmio_trace(void)
device_initcall(init_mmio_trace);
static void __trace_mmiotrace_rw(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_rw *rw)
{
struct trace_buffer *buffer = tr->array_buffer.buffer;
@ -315,12 +314,10 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
void mmio_trace_rw(struct mmiotrace_rw *rw)
{
struct trace_array *tr = mmio_trace_array;
struct trace_array_cpu *data = per_cpu_ptr(tr->array_buffer.data, smp_processor_id());
__trace_mmiotrace_rw(tr, data, rw);
__trace_mmiotrace_rw(tr, rw);
}
static void __trace_mmiotrace_map(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_map *map)
{
struct trace_buffer *buffer = tr->array_buffer.buffer;
@ -344,12 +341,7 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
void mmio_trace_mapping(struct mmiotrace_map *map)
{
struct trace_array *tr = mmio_trace_array;
struct trace_array_cpu *data;
preempt_disable();
data = per_cpu_ptr(tr->array_buffer.data, smp_processor_id());
__trace_mmiotrace_map(tr, data, map);
preempt_enable();
__trace_mmiotrace_map(tr, map);
}
int mmio_trace_printk(const char *fmt, va_list args)