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authorDaniel Borkmann <daniel@iogearbox.net>2017-01-25 02:28:16 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-25 13:17:47 -0500
commit2acae0d5b0f73a8fb4b180bd13491feb96e55fc6 (patch)
tree2446a003c916ffd69a70a4ec167848c67aa2305b /kernel/trace
parent60b1af3300724d211bb0b420c1fbe6bf5b87b013 (diff)
trace: add variant without spacing in trace_print_hex_seq
For upcoming tracepoint support for BPF, we want to dump the program's tag. Format should be similar to __print_hex(), but without spacing. Add a __print_hex_str() variant for exactly that purpose that reuses trace_print_hex_seq(). Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace_output.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 5d33a7352919..30a144b1b9ee 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -163,14 +163,15 @@ trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr,
EXPORT_SYMBOL_GPL(trace_print_bitmask_seq);
const char *
-trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len)
+trace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len,
+ bool spacing)
{
int i;
const char *ret = trace_seq_buffer_ptr(p);
for (i = 0; i < buf_len; i++)
- trace_seq_printf(p, "%s%2.2x", i == 0 ? "" : " ", buf[i]);
-
+ trace_seq_printf(p, "%s%2.2x", !spacing || i == 0 ? "" : " ",
+ buf[i]);
trace_seq_putc(p, 0);
return ret;