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authorFabiano Rosas <farosas@linux.ibm.com>2018-10-04 11:30:09 -0300
committerStefan Hajnoczi <stefanha@redhat.com>2018-12-12 10:04:59 +0000
commit8fbc12f324135cf579277c212ab8690ca9174512 (patch)
tree0a4254806de40757f9a0af0b8d86c5e3cf804ee0
parentbb9bf94b3e8926553290bc9a7cb84315af422086 (diff)
downloadqemu-arm-8fbc12f324135cf579277c212ab8690ca9174512.tar.gz
tracetool: Include thread id information in log backend
Currently the log backend prints the process id of QEMU at the start of each output line, but since threads share the same PID there is no clear distinction between their outputs. Having the thread id present in the log makes it easier to see when output comes from different threads. E.g.: 12423@1538597569.672527:qemu_mutex_lock waiting on mutex 0x1103ee60 (/root/qemu/util/main-loop.c:236) ... 12430@1538597569.503928:qemu_mutex_unlock released mutex 0x1103ee60 (/root/qemu/cpus.c:1238) 12431@1538597569.503937:qemu_mutex_locked taken mutex 0x1103ee60 (/root/qemu/cpus.c:1257) ^here In the above, 12423 is the main process id and 12430 & 12431 are the two vcpu threads. (qemu) info cpus * CPU #0: thread_id=12430 CPU #1: thread_id=12431 Suggested-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r--scripts/tracetool/backend/log.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/tracetool/backend/log.py b/scripts/tracetool/backend/log.py
index 6751f41bc5..33c95af8e9 100644
--- a/scripts/tracetool/backend/log.py
+++ b/scripts/tracetool/backend/log.py
@@ -39,7 +39,7 @@ def generate_h(event, group):
' struct timeval _now;',
' gettimeofday(&_now, NULL);',
' qemu_log("%%d@%%zu.%%06zu:%(name)s " %(fmt)s "\\n",',
- ' getpid(),',
+ ' qemu_get_thread_id(),',
' (size_t)_now.tv_sec, (size_t)_now.tv_usec',
' %(argnames)s);',
' }',