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tracing/uprobes: Do not use return values of trace_seq_printf()

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The functions trace_seq_printf() and friends will soon no longer have
return values. Using trace_seq_has_overflowed() and trace_handle_return()
should be used instead.

Link: http://lkml.kernel.org/r/20141114011411.693008134@goodmis.org
Link: http://lkml.kernel.org/r/20141115050602.333705855@goodmis.org

Reviewed-by: Masami Hiramatsu <masami.hiramatu.pt@hitachi.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-11-12 17:26:57 -05:00 committed by Steven Rostedt
parent d2b0191a38
commit 8579a107a6
1 changed files with 10 additions and 13 deletions
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23
kernel/trace/trace_uprobe.c
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@ -852,16 +852,14 @@ print_uprobe_event(struct trace_iterator *iter, int flags, struct trace_event *e
tu = container_of(event, struct trace_uprobe, tp.call.event); tu = container_of(event, struct trace_uprobe, tp.call.event);
if (is_ret_probe(tu)) { if (is_ret_probe(tu)) {
if (!trace_seq_printf(s, "%s: (0x%lx <- 0x%lx)", trace_seq_printf(s, "%s: (0x%lx <- 0x%lx)",
ftrace_event_name(&tu->tp.call), ftrace_event_name(&tu->tp.call),
entry->vaddr[1], entry->vaddr[0])) entry->vaddr[1], entry->vaddr[0]);
goto partial;
data = DATAOF_TRACE_ENTRY(entry, true); data = DATAOF_TRACE_ENTRY(entry, true);
} else { } else {
if (!trace_seq_printf(s, "%s: (0x%lx)", trace_seq_printf(s, "%s: (0x%lx)",
ftrace_event_name(&tu->tp.call), ftrace_event_name(&tu->tp.call),
entry->vaddr[0])) entry->vaddr[0]);
goto partial;
data = DATAOF_TRACE_ENTRY(entry, false); data = DATAOF_TRACE_ENTRY(entry, false);
} }
@ -869,14 +867,13 @@ print_uprobe_event(struct trace_iterator *iter, int flags, struct trace_event *e
struct probe_arg *parg = &tu->tp.args[i]; struct probe_arg *parg = &tu->tp.args[i];
if (!parg->type->print(s, parg->name, data + parg->offset, entry)) if (!parg->type->print(s, parg->name, data + parg->offset, entry))
goto partial; goto out;
} }
if (trace_seq_putc(s, '\n')) trace_seq_putc(s, '\n');
return TRACE_TYPE_HANDLED;
partial: out:
return TRACE_TYPE_PARTIAL_LINE; return trace_handle_return(s);
} }
typedef bool (*filter_func_t)(struct uprobe_consumer *self, typedef bool (*filter_func_t)(struct uprobe_consumer *self,