| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.15 018/109] tracing: Add TRACE_ITER_PRINTK flag check in __trace_puts/__trace_bputs | Date | Sat, 26 Jul 2014 12:01:40 -0700 |
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3.15-stable review patch. If anyone has any objections, please let me know.
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From: "zhangwei(Jovi)" <jovi.zhangwei@huawei.com>
commit f0160a5a2912267c02cfe692eac955c360de5fdf upstream.
The TRACE_ITER_PRINTK check in __trace_puts/__trace_bputs is missing, so add it, to be consistent with __trace_printk/__trace_bprintk. Those functions are all called by the same function: trace_printk().
Link: http://lkml.kernel.org/p/51E7A7D6.8090900@huawei.com
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- kernel/trace/trace.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -468,6 +468,9 @@ int __trace_puts(unsigned long ip, const int alloc; int pc; + if (!(trace_flags & TRACE_ITER_PRINTK)) + return 0; + pc = preempt_count(); if (unlikely(tracing_selftest_running || tracing_disabled)) @@ -515,6 +518,9 @@ int __trace_bputs(unsigned long ip, cons int size = sizeof(struct bputs_entry); int pc; + if (!(trace_flags & TRACE_ITER_PRINTK)) + return 0; + pc = preempt_count(); if (unlikely(tracing_selftest_running || tracing_disabled))
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