From 2d34f48955158cfdf18704256c84b04fe3a16c7b Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 30 Sep 2015 11:45:22 -0400 Subject: tracing: Make ftrace_trace_stack() depend on general trace_array flag In preparation for the multi buffer instances to have their own trace_flags, the check in ftrace_trace_stack() needs to test the trace_array descriptor flag that is for the current event, not the global_trace descriptor. Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'kernel/trace/trace.c') diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 5f481887e98b..51697b41f5d4 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -482,7 +482,8 @@ static inline void trace_access_lock_init(void) static void __ftrace_trace_stack(struct ring_buffer *buffer, unsigned long flags, int skip, int pc, struct pt_regs *regs); -static inline void ftrace_trace_stack(struct ring_buffer *buffer, +static inline void ftrace_trace_stack(struct trace_array *tr, + struct ring_buffer *buffer, unsigned long flags, int skip, int pc, struct pt_regs *regs); @@ -492,7 +493,8 @@ static inline void __ftrace_trace_stack(struct ring_buffer *buffer, int skip, int pc, struct pt_regs *regs) { } -static inline void ftrace_trace_stack(struct ring_buffer *buffer, +static inline void ftrace_trace_stack(struct trace_array *tr, + struct ring_buffer *buffer, unsigned long flags, int skip, int pc, struct pt_regs *regs) { @@ -574,7 +576,7 @@ int __trace_puts(unsigned long ip, const char *str, int size) entry->buf[size] = '\0'; __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, irq_flags, 4, pc, NULL); + ftrace_trace_stack(&global_trace, buffer, irq_flags, 4, pc, NULL); return size; } @@ -614,7 +616,7 @@ int __trace_bputs(unsigned long ip, const char *str) entry->str = str; __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, irq_flags, 4, pc, NULL); + ftrace_trace_stack(&global_trace, buffer, irq_flags, 4, pc, NULL); return 1; } @@ -1691,7 +1693,7 @@ void trace_buffer_unlock_commit(struct trace_array *tr, { __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, flags, 6, pc, NULL); + ftrace_trace_stack(tr, buffer, flags, 6, pc, NULL); ftrace_trace_userstack(buffer, flags, pc); } EXPORT_SYMBOL_GPL(trace_buffer_unlock_commit); @@ -1743,7 +1745,7 @@ void trace_buffer_unlock_commit_regs(struct trace_array *tr, { __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, flags, 6, pc, regs); + ftrace_trace_stack(tr, buffer, flags, 6, pc, regs); ftrace_trace_userstack(buffer, flags, pc); } EXPORT_SYMBOL_GPL(trace_buffer_unlock_commit_regs); @@ -1872,11 +1874,12 @@ static void __ftrace_trace_stack(struct ring_buffer *buffer, } -static inline void ftrace_trace_stack(struct ring_buffer *buffer, +static inline void ftrace_trace_stack(struct trace_array *tr, + struct ring_buffer *buffer, unsigned long flags, int skip, int pc, struct pt_regs *regs) { - if (!(global_trace.trace_flags & TRACE_ITER_STACKTRACE)) + if (!(tr->trace_flags & TRACE_ITER_STACKTRACE)) return; __ftrace_trace_stack(buffer, flags, skip, pc, regs); @@ -2164,7 +2167,7 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args) memcpy(entry->buf, tbuffer, sizeof(u32) * len); if (!call_filter_check_discard(call, entry, buffer, event)) { __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, flags, 6, pc, NULL); + ftrace_trace_stack(tr, buffer, flags, 6, pc, NULL); } out: @@ -2216,7 +2219,7 @@ __trace_array_vprintk(struct ring_buffer *buffer, memcpy(&entry->buf, tbuffer, len + 1); if (!call_filter_check_discard(call, entry, buffer, event)) { __buffer_unlock_commit(buffer, event); - ftrace_trace_stack(buffer, flags, 6, pc, NULL); + ftrace_trace_stack(&global_trace, buffer, flags, 6, pc, NULL); } out: preempt_enable_notrace(); -- cgit v1.2.3