perf debug: Add debug_set_display_time function

Allow to display time in perf debug output via new
debug_set_display_time function.

It will be used in perf daemon command to get verbose output into log
file.

The debug time format is:

  [2020-12-03 18:25:31.822152] affinity: SYS
  [2020-12-03 18:25:31.822164] mmap flush: 1
  [2020-12-03 18:25:31.822175] comp level: 0
  [2020-12-03 18:25:32.002047] mmap size 528384B

Committer notes:

Cast tod.tv_usec to long to avoid this problem:

    78    12.70 ubuntu:18.04-x-sparc64        : FAIL sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0

  util/debug.c: In function 'fprintf_time':
  util/debug.c:63:32: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type '__suseconds_t {aka int}' [-Werror=format=]
    return fprintf(file, "[%s.%06lu] ", date, tod.tv_usec);
                              ~~~~^           ~~~~~~~~~~~
                              %06u

Signed-off-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexei Budankov <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions