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authorTom Zanussi <zanussi@kernel.org>2019-06-28 12:40:22 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2020-01-28 23:17:10 -0500
commitd0a497066f92eee6e5750af6a0ca32866030931a (patch)
treed95c8097b330a9ba44b87653d2fcfa2c6fb7953c /kernel
parent4de26c8c967d55551d3983771116a2c3c0a4f464 (diff)
tracing: Add 'hist:' to hist trigger error log error string
The 'hist:' prefix gets stripped from the command text during command processing, but should be added back when displaying the command during error processing. Not only because it's what should be displayed but also because not having it means the test cases fail because the caret is miscalculated by the length of the prefix string. Link: http://lkml.kernel.org/r/449df721f560042e22382f67574bcc5b4d830d3d.1561743018.git.zanussi@kernel.org Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_events_hist.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 23458ba9e5f5..c322826e0726 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -612,7 +612,8 @@ static void last_cmd_set(struct trace_event_file *file, char *str)
if (!str)
return;
- strncpy(last_cmd, str, MAX_FILTER_STR_VAL - 1);
+ strcpy(last_cmd, "hist:");
+ strncat(last_cmd, str, MAX_FILTER_STR_VAL - 1 - sizeof("hist:"));
if (file) {
call = file->event_call;