qemu-log: Abstract out "print usage message about valid log categories"

Abstract out the "print a human readable list of all the
valid log categories" functionality which is currently duplicated
in three separate places. (We leave the monitor.c help_cmd()
implementation as-is since it wants to send the message to
the monitor and add its own information.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 1 insertions, 5 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index 4beb5c9ae5..00b0125414 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3098,14 +3098,10 @@ static void handle_arg_help(const char *arg)
 static void handle_arg_log(const char *arg)
 {
     int mask;
-    const CPULogItem *item;
 
     mask = cpu_str_to_log_mask(arg);
     if (!mask) {
-        printf("Log items (comma separated):\n");
-        for (item = cpu_log_items; item->mask != 0; item++) {
-            printf("%-10s %s\n", item->name, item->help);
-        }
+        qemu_print_log_usage(stdout);
         exit(1);
     }
     cpu_set_log(mask);