ANDROID: vendor_hooks: add hook to show more vendor cpu info.

Add hook to show the more information about cpu, when cat /proc/cpuinfo
 , some chip info will be appended.

Bug: 341597636
Change-Id: I4dbf7ba305a428f3dcf71e71d700a51dac8f7be0
Signed-off-by: Dezhi Huang <huangdezhi@hihonor.com>
(cherry picked from commit 08c63cde8c2bbdd5ab44c4f644422764f9b9ad14)

arch/arm64/kernel/cpuinfo.c

@@ -25,6 +25,8 @@
 #include <linux/smp.h>
 #include <linux/delay.h>
 
+#include <trace/hooks/cpuinfo.h>
+
 /*
  * In case the boot CPU is hotpluggable, we record its initial state and
  * current state separately. Certain system registers may contain different
@@ -255,6 +257,8 @@ static int c_show(struct seq_file *m, void *v)
 		seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
 	}
 
+	trace_android_rvh_cpuinfo_c_show(m);
+
 	return 0;
 }
 

drivers/android/vendor_hooks.c

@@ -60,6 +60,7 @@
 #include <trace/hooks/regmap.h>
 #include <trace/hooks/softlockup.h>
 #include <trace/hooks/power.h>
+#include <trace/hooks/cpuinfo.h>
 #include <trace/hooks/dmabuf.h>
 #include <trace/hooks/signal.h>
 #include <trace/hooks/compaction.h>
@@ -114,6 +115,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_irqs_disable);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_irqs_enable);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpu_cgroup_attach);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpu_cgroup_online);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_cpuinfo_c_show);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_meminfo_cache_adjust);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_si_mem_available_adjust);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_si_meminfo_adjust);

include/trace/hooks/cpuinfo.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cpuinfo
+
+#define TRACE_INCLUDE_PATH trace/hooks
+
+#if !defined(_TRACE_HOOK_CPUINFO_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_HOOK_CPUINFO_H
+
+#include <trace/hooks/vendor_hooks.h>
+
+DECLARE_RESTRICTED_HOOK(android_rvh_cpuinfo_c_show,
+	TP_PROTO(struct seq_file *m),
+	TP_ARGS(m), 1);
+
+#endif /* _TRACE_HOOK_CPUINFO_H */
+/* This part must be outside protection */
+#include <trace/define_trace.h>