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Code Issues Releases Wiki Activity

uprobes/tracing: Kill the pointless task_pt_regs() calls

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

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Tested-by: Anton Arapov <anton@redhat.com>
This commit is contained in:
Oleg Nesterov 2013-03-28 18:01:04 +01:00
parent decc6bfb49
commit 07720b63a9
1 changed files with 2 additions and 2 deletions
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4
kernel/trace/trace_uprobe.c
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@ -507,7 +507,7 @@ static int uprobe_trace_func(struct trace_uprobe *tu, struct pt_regs *regs)
return 0;
entry = ring_buffer_event_data(event);
entry->ip = instruction_pointer(task_pt_regs(current));
entry->ip = instruction_pointer(regs);
data = (u8 *)&entry[1];
for (i = 0; i < tu->nr_args; i++)
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)
goto out;
entry->ip = instruction_pointer(task_pt_regs(current));
entry->ip = instruction_pointer(regs);
data = (u8 *)&entry[1];
for (i = 0; i < tu->nr_args; i++)
call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);