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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-11-12 23:19:51 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-11-19 21:25:44 +0100 |
| commit | d2b0191a38cb1811fa69f645ff4b37e3a23a956d (patch) | |
| tree | 076d0a3fd62ad5fa1726211a6f3bc0eee5111516 /kernel/trace | |
| parent | tracing: Do not check return values of trace_seq_p*() for mmio tracer (diff) | |
| download | linux-d2b0191a38cb1811fa69f645ff4b37e3a23a956d.tar.xz linux-d2b0191a38cb1811fa69f645ff4b37e3a23a956d.zip | |
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 <pmladek@suse.cz>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_probe.c | 10 |
1 files 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)); |