add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/drivers/hwtracing/stm/ftrace.c
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@@ -37,8 +37,10 @@
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 stm_ftrace_write(struct trace_export *export, const void *buf, unsigned int len)
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 {
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 	struct stm_ftrace *stm = container_of(export, struct stm_ftrace, ftrace);
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+	/* This is called from trace system with preemption disabled */
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+	unsigned int cpu = smp_processor_id();
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-	stm_source_write(&stm->data, STM_FTRACE_CHAN, buf, len);
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+	stm_source_write(&stm->data, STM_FTRACE_CHAN + cpu, buf, len);
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 }
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 static int stm_ftrace_link(struct stm_source_data *data)
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@@ -46,6 +48,8 @@
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 	struct stm_ftrace *sf = container_of(data, struct stm_ftrace, data);
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 	sf->ftrace.write = stm_ftrace_write;
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+	sf->ftrace.flags = TRACE_EXPORT_FUNCTION | TRACE_EXPORT_EVENT
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+			| TRACE_EXPORT_MARKER;
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 	return register_ftrace_export(&sf->ftrace);
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 }
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@@ -61,6 +65,7 @@
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 {
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 	int ret;
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+	stm_ftrace.data.nr_chans = roundup_pow_of_two(num_possible_cpus());
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 	ret = stm_source_register_device(NULL, &stm_ftrace.data);
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 	if (ret)
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 		pr_err("Failed to register stm_source - ftrace.\n");