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authorOleg Nesterov <oleg@redhat.com>2013-01-31 19:55:27 +0100
committerOleg Nesterov <oleg@redhat.com>2013-02-08 18:24:34 +0100
commit1b47aefd9b6bd439a4be43c47acd22987ac22db8 (patch)
treea3d0a40ce94f7e57d4375a77a0c74c0001b4bb67 /kernel/trace
parenta932b7381f81235530c3d0acbd3ba2c7537d78e5 (diff)
downloadop-kernel-dev-1b47aefd9b6bd439a4be43c47acd22987ac22db8.zip
op-kernel-dev-1b47aefd9b6bd439a4be43c47acd22987ac22db8.tar.gz
uprobes/perf: Always increment trace_uprobe->nhit
Move tu->nhit++ from uprobe_trace_func() to uprobe_dispatcher(). ->nhit counts how many time we hit the breakpoint inserted by this uprobe, we do not want to loose this info if uprobe was enabled by sys_perf_event_open(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace_uprobe.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 9c8babb..c4e29e1 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -476,8 +476,6 @@ static void uprobe_trace_func(struct trace_uprobe *tu, struct pt_regs *regs)
unsigned long irq_flags;
struct ftrace_event_call *call = &tu->call;
- tu->nhit++;
-
local_save_flags(irq_flags);
pc = preempt_count();
@@ -701,6 +699,7 @@ static int uprobe_dispatcher(struct uprobe_consumer *con, struct pt_regs *regs)
struct trace_uprobe *tu;
tu = container_of(con, struct trace_uprobe, consumer);
+ tu->nhit++;
if (tu->flags & TP_FLAG_TRACE)
uprobe_trace_func(tu, regs);
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