[for-next][PATCH 2/2] ftrace: Calculate the correct dyn_ftrace number to report to the userspace
From: Steven Rostedt
Date: Fri Oct 23 2015 - 08:34:50 EST
From: Minfei Huang <mnfhuang@xxxxxxxxx>
Now, ftrace only calculate the dyn_ftrace number in the adding
breakpoint loop, not in adding update and finish update loop.
Calculate the correct dyn_ftrace, once ftrace reports the failure message
to the userspace.
Link: http://lkml.kernel.org/r/1442420382-13130-1-git-send-email-mnfhuang@xxxxxxxxx
Signed-off-by: Minfei Huang <mnfhuang@xxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
arch/x86/kernel/ftrace.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 8b7b0a51e742..311bcf338f07 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -556,6 +556,7 @@ void ftrace_replace_code(int enable)
run_sync();
report = "updating code";
+ count = 0;
for_ftrace_rec_iter(iter) {
rec = ftrace_rec_iter_record(iter);
@@ -563,11 +564,13 @@ void ftrace_replace_code(int enable)
ret = add_update(rec, enable);
if (ret)
goto remove_breakpoints;
+ count++;
}
run_sync();
report = "removing breakpoints";
+ count = 0;
for_ftrace_rec_iter(iter) {
rec = ftrace_rec_iter_record(iter);
@@ -575,6 +578,7 @@ void ftrace_replace_code(int enable)
ret = finish_update(rec, enable);
if (ret)
goto remove_breakpoints;
+ count++;
}
run_sync();
--
2.6.1
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