From d2b0191a38cb1811fa69f645ff4b37e3a23a956d Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 12 Nov 2014 17:19:51 -0500 Subject: [PATCH] tracing/probes: Do not use return value of trace_seq_printf() The functions trace_seq_printf() and friends will soon not have a return value and will only be a void function. Use trace_seq_has_overflowed() instead to know if the trace_seq operations succeeded or not. Link: http://lkml.kernel.org/r/20141114011411.530216306@goodmis.org Reviewed-by: Petr Mladek Acked-by: Masami Hiramatsu Acked-by: Namhyung Kim Signed-off-by: Steven Rostedt --- kernel/trace/trace_probe.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c index d4b9fc22cd27..b983b2fd2ca1 100644 --- a/kernel/trace/trace_probe.c +++ b/kernel/trace/trace_probe.c @@ -40,7 +40,8 @@ const char *reserved_field_names[] = { int PRINT_TYPE_FUNC_NAME(type)(struct trace_seq *s, const char *name, \ void *data, void *ent) \ { \ - return trace_seq_printf(s, " %s=" fmt, name, *(type *)data); \ + trace_seq_printf(s, " %s=" fmt, name, *(type *)data); \ + return !trace_seq_has_overflowed(s); \ } \ const char PRINT_TYPE_FMT_NAME(type)[] = fmt; \ NOKPROBE_SYMBOL(PRINT_TYPE_FUNC_NAME(type)); @@ -61,10 +62,11 @@ int PRINT_TYPE_FUNC_NAME(string)(struct trace_seq *s, const char *name, int len = *(u32 *)data >> 16; if (!len) - return trace_seq_printf(s, " %s=(fault)", name); + trace_seq_printf(s, " %s=(fault)", name); else - return trace_seq_printf(s, " %s=\"%s\"", name, - (const char *)get_loc_data(data, ent)); + trace_seq_printf(s, " %s=\"%s\"", name, + (const char *)get_loc_data(data, ent)); + return !trace_seq_has_overflowed(s); } NOKPROBE_SYMBOL(PRINT_TYPE_FUNC_NAME(string)); -- 2.20.1