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| author | Namhyung Kim <namhyung@kernel.org> | 2014-01-17 17:08:40 +0900 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-02-20 12:30:11 -0500 |
| commit | 43fe98913c9f67e3b523615ee3316f9520a623e0 (patch) | |
| tree | c610b40c7d7d6fc9278ec69de4ec46000ab4f83e /kernel/trace/trace_uprobe.c | |
| parent | ca3b162021a421b38a9cd7b66555b9b01568dc9d (diff) | |
| download | linux-43fe98913c9f67e3b523615ee3316f9520a623e0.tar.gz linux-43fe98913c9f67e3b523615ee3316f9520a623e0.tar.xz | |
tracing/uprobes: Support mix of ftrace and perf
It seems there's no reason to prevent mixed used of ftrace and perf
for a single uprobe event. At least the kprobes already support it.
Link: http://lkml.kernel.org/r/1389946120-19610-6-git-send-email-namhyung@kernel.org
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_uprobe.c')
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 01fcb0db75cb..e4473367e7a4 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -882,9 +882,6 @@ probe_event_enable(struct trace_uprobe *tu, struct ftrace_event_file *file, int ret; if (file) { - if (tu->tp.flags & TP_FLAG_PROFILE) - return -EINTR; - link = kmalloc(sizeof(*link), GFP_KERNEL); if (!link) return -ENOMEM; @@ -893,12 +890,8 @@ probe_event_enable(struct trace_uprobe *tu, struct ftrace_event_file *file, list_add_tail_rcu(&link->list, &tu->tp.files); tu->tp.flags |= TP_FLAG_TRACE; - } else { - if (tu->tp.flags & TP_FLAG_TRACE) - return -EINTR; - + } else tu->tp.flags |= TP_FLAG_PROFILE; - } ret = uprobe_buffer_enable(); if (ret < 0) |