Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 07720b63 authored by Oleg Nesterov's avatar Oleg Nesterov
Browse files

uprobes/tracing: Kill the pointless task_pt_regs() calls 



uprobe_trace_func() and uprobe_perf_func() do not need task_pt_regs(),
we already have "struct pt_regs *regs".

Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Acked-by: default avatarSrikar Dronamraju <srikar@linux.vnet.ibm.com>
Tested-by: default avatarAnton Arapov <anton@redhat.com>
parent decc6bfb

kernel/trace/trace_uprobe.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -507,7 +507,7 @@ static int uprobe_trace_func(struct trace_uprobe *tu, struct pt_regs *regs) 
		return 0;

		return 0;





	entry = ring_buffer_event_data(event);

	entry = ring_buffer_event_data(event);

	entry->ip = instruction_pointer(task_pt_regs(current));

	entry->ip = instruction_pointer(regs);

	data = (u8 *)&entry[1];

	data = (u8 *)&entry[1];

	for (i = 0; i < tu->nr_args; i++)

	for (i = 0; i < tu->nr_args; i++)

		call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);

		call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);
@@ -777,7 +777,7 @@ static int uprobe_perf_func(struct trace_uprobe *tu, struct pt_regs *regs) 
	if (!entry)

	if (!entry)

		goto out;

		goto out;





	entry->ip = instruction_pointer(task_pt_regs(current));

	entry->ip = instruction_pointer(regs);

	data = (u8 *)&entry[1];

	data = (u8 *)&entry[1];

	for (i = 0; i < tu->nr_args; i++)

	for (i = 0; i < tu->nr_args; i++)

		call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);

		call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);