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>
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@ -612,7 +612,8 @@ static void last_cmd_set(struct trace_event_file *file, char *str)
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if (!str)
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return;
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strncpy(last_cmd, str, MAX_FILTER_STR_VAL - 1);
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strcpy(last_cmd, "hist:");
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strncat(last_cmd, str, MAX_FILTER_STR_VAL - 1 - sizeof("hist:"));
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if (file) {
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call = file->event_call;
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