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perf tools: Use ui__error() for reporting --fields errors

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So that we can get it working for TUI, where using just pr_err() would
end up making the message emitted to stderr to be erased by the TUI exit
routine restoring the terminal to its previous state.

Now we can see that trying to use a tracepoint field as one of the
--field entries isn't working:

  # perf top --stdio --no-children -e syscalls:sys_enter_write --fields pid,sym,count
  Error:
  Unknown --fields key: `count'
   Usage: perf top [<options>]

        --fields <key[,keys...]>
                          output field(s): overhead, period, sample plus all of sort keys
  #

Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-01-18 10:28:14 -03:00
commit 5627117043
1 changed files with 2 additions and 2 deletions
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4
tools/perf/util/sort.c
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@ -2887,10 +2887,10 @@ static int setup_output_list(struct perf_hpp_list *list, char *str)
tok; tok = strtok_r(NULL, ", ", &tmp)) {
ret = output_field_add(list, tok);
if (ret == -EINVAL) {
pr_err("Invalid --fields key: `%s'", tok);
ui__error("Invalid --fields key: `%s'", tok);
break;
} else if (ret == -ESRCH) {
pr_err("Unknown --fields key: `%s'", tok);
ui__error("Unknown --fields key: `%s'", tok);
break;
}
}