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virtiofsd: Add timestamp to the log with FUSE_LOG_DEBUG level

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virtiofsd has some threads, so we see a lot of logs with debug option.
It would be useful for debugging if we can see the timestamp.

Add nano second timestamp, which got by get_clock(), to the log with
FUSE_LOG_DEBUG level if the syslog option isn't set.

The log is like as:

  # ./virtiofsd -d -o vhost_user_socket=/tmp/vhostqemu0 -o source=/tmp/share0 -o cache=auto
  ...
  [5365943125463727] [ID: 00000002] fv_queue_thread: Start for queue 0 kick_fd 9
  [5365943125568644] [ID: 00000002] fv_queue_thread: Waiting for Queue 0 event
  [5365943125573561] [ID: 00000002] fv_queue_thread: Got queue event on Queue 0

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Masayoshi Mizuma 2019-11-06 14:06:02 -05:00 committed by Dr. David Alan Gilbert
parent 36f3846902
commit 50fb955aa0
1 changed files with 8 additions and 1 deletions
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9
tools/virtiofsd/passthrough_ll.c
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@ -36,6 +36,7 @@
*/
#include "qemu/osdep.h"
#include "qemu/timer.h"
#include "fuse_virtio.h"
#include "fuse_log.h"
#include "fuse_lowlevel.h"
@ -2276,7 +2277,13 @@ static void log_func(enum fuse_log_level level, const char *fmt, va_list ap)
}
if (current_log_level == FUSE_LOG_DEBUG) {
localfmt = g_strdup_printf("[ID: %08ld] %s", syscall(__NR_gettid), fmt);
if (!use_syslog) {
localfmt = g_strdup_printf("[%" PRId64 "] [ID: %08ld] %s",
get_clock(), syscall(__NR_gettid), fmt);
} else {
localfmt = g_strdup_printf("[ID: %08ld] %s", syscall(__NR_gettid),
fmt);
}
fmt = localfmt;
}