Merge "msm: msm_bus: Add means to dump all client requests to trace buffer" (59c5e352) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/platform/msm/msm_bus/msm_bus_dbg.c

+45 −0

Original line number	Diff line number	Diff line
		@@ -725,6 +725,47 @@ static const struct file_operations msm_bus_dbg_update_request_fops = {
		.write = msm_bus_dbg_update_request_write,
		};

		static int msm_bus_dbg_dump_clients_open(struct inode inode, struct file file)
		{
		file->private_data = inode->i_private;
		return 0;
		}

		static ssize_t msm_bus_dbg_dump_clients_read(struct file *file,
		char __user buf, size_t count, loff_t ppos)
		{
		int j, cnt;
		char msg[50];
		struct msm_bus_cldata *cldata = NULL;

		cnt = scnprintf(msg, 50,
		"\nDumping curent client votes to trace log\n");
		if (*ppos)
		goto exit_dump_clients_read;
		list_for_each_entry(cldata, &cl_list, list) {
		if (IS_ERR_OR_NULL(cldata->pdata))
		continue;
		for (j = 0; j < cldata->pdata->usecase->num_paths; j++) {
		if (cldata->index == -1)
		continue;
		trace_bus_client_status(
		cldata->pdata->name,
		cldata->pdata->usecase[cldata->index].vectors[j].src,
		cldata->pdata->usecase[cldata->index].vectors[j].dst,
		cldata->pdata->usecase[cldata->index].vectors[j].ab,
		cldata->pdata->usecase[cldata->index].vectors[j].ib,
		cldata->pdata->active_only);
		}
		}
		exit_dump_clients_read:
		return simple_read_from_buffer(buf, count, ppos, msg, cnt);
		}

		static const struct file_operations msm_bus_dbg_dump_clients_fops = {
		.open = msm_bus_dbg_dump_clients_open,
		.read = msm_bus_dbg_dump_clients_read,
		};

		/**
		* msm_bus_dbg_client_data() - Add debug data for clients
		* @pdata: Platform data of the client
		@@ -860,6 +901,10 @@ static int __init msm_bus_debugfs_init(void)
		}
		}

		if (debugfs_create_file("dump_clients", S_IRUGO \| S_IWUSR,
		clients, NULL, &msm_bus_dbg_dump_clients_fops) == NULL)
		goto err;

		mutex_lock(&msm_bus_dbg_fablist_lock);
		list_for_each_entry(fablist, &fabdata_list, list) {
		fablist->file = debugfs_create_file(fablist->name, S_IRUGO,

include/trace/events/trace_msm_bus.h

+34 −0

Original line number	Diff line number	Diff line
		@@ -170,6 +170,40 @@ TRACE_EVENT(bus_bke_params,
		__entry->gc, __entry->gp, __entry->thl, __entry->thm,
		__entry->thh)
		);

		TRACE_EVENT(bus_client_status,

		TP_PROTO(const char *name, int src, int dest,
		unsigned long long ab, unsigned long long ib, int active_only),

		TP_ARGS(name, src, dest, ab, ib, active_only),

		TP_STRUCT__entry(
		__string(name, name)
		__field(int, src)
		__field(int, dest)
		__field(u64, ab)
		__field(u64, ib)
		__field(int, active_only)
		),

		TP_fast_assign(
		__assign_str(name, name);
		__entry->src = src;
		__entry->dest = dest;
		__entry->ab = ab;
		__entry->ib = ib;
		__entry->active_only = active_only;
		),

		TP_printk("name=%s src=%d dest=%d ab=%llu ib=%llu active_only=%d",
		__get_str(name),
		__entry->src,
		__entry->dest,
		(unsigned long long)__entry->ab,
		(unsigned long long)__entry->ib,
		__entry->active_only)
		);
		#endif
		#define TRACE_INCLUDE_FILE trace_msm_bus
		#include <trace/define_trace.h>