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authorOleg Nesterov <oleg@redhat.com>2013-03-28 18:01:04 +0100
committerOleg Nesterov <oleg@redhat.com>2013-04-13 15:31:59 +0200
commit07720b63a964851928fa5d8b00ee5270d66b94f7 (patch)
treea0f34bea6ac91b0444c48fc830b53b0139c0e746 /kernel/trace
parentdecc6bfb49d1eda6cec67d79b73a73fa3aaad6e5 (diff)
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: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Tested-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace_uprobe.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 8dad2a92dee9..af5b7735cebf 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -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);