Merge remote-tracking branch 'remotes/stsquad/tags/pull-tesing-and-misc-191219-1' into staging

Various testing and logging updates

  - test tci with Travis
  - enable multiarch testing in Travis
  - default to out-of-tree builds
  - make changing logfile safe via RCU
  - remove redundant tests
  - remove gtester test from docker
  - convert DEBUG_MMAP to tracepoints
  - remove hand rolled glob function
  - trigger tcg re-configure when needed

# gpg: Signature made Thu 19 Dec 2019 08:24:08 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-tesing-and-misc-191219-1: (25 commits)
  tests/tcg: ensure we re-configure if configure.sh is updated
  trace: replace hand-crafted pattern_glob with g_pattern_match_simple
  linux-user: convert target_munmap debug to a tracepoint
  linux-user: log page table changes under -d page
  linux-user: add target_mmap_complete tracepoint
  linux-user: convert target_mmap debug to tracepoint
  linux-user: convert target_mprotect debug to tracepoint
  travis.yml: Remove the redundant clang-with-MAIN_SOFTMMU_TARGETS entry
  docker: gtester is no longer used
  Added tests for close and change of logfile.
  Add use of RCU for qemu_logfile.
  qemu_log_lock/unlock now preserves the qemu_logfile handle.
  Add a mutex to guarantee single writer to qemu_logfile handle.
  Cleaned up flow of code in qemu_set_log(), to simplify and clarify.
  Fix double free issue in qemu_set_log_filename().
  ci: build out-of-tree
  travis.yml: Enable builds on arm64, ppc64le and s390x
  tests/test-util-filemonitor: Skip test on non-x86 Travis containers
  tests/hd-geo-test: Skip test when images can not be created
  iotests: Skip test 079 if it is not possible to create large files
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 29 insertions, 5 deletions

diff --git a/include/exec/log.h b/include/exec/log.h
index e2cfd436e6..fcc7b9e00b 100644
--- a/include/exec/log.h
+++ b/include/exec/log.h
@@ -15,8 +15,15 @@
  */
 static inline void log_cpu_state(CPUState *cpu, int flags)
 {
+    QemuLogFile *logfile;
+
     if (qemu_log_enabled()) {
-        cpu_dump_state(cpu, qemu_logfile, flags);
+        rcu_read_lock();
+        logfile = atomic_rcu_read(&qemu_logfile);
+        if (logfile) {
+            cpu_dump_state(cpu, logfile->fd, flags);
+        }
+        rcu_read_unlock();
     }
 }
 
@@ -40,19 +47,36 @@ static inline void log_cpu_state_mask(int mask, CPUState *cpu, int flags)
 static inline void log_target_disas(CPUState *cpu, target_ulong start,
                                     target_ulong len)
 {
-    target_disas(qemu_logfile, cpu, start, len);
+    QemuLogFile *logfile;
+    rcu_read_lock();
+    logfile = atomic_rcu_read(&qemu_logfile);
+    if (logfile) {
+        target_disas(logfile->fd, cpu, start, len);
+    }
+    rcu_read_unlock();
 }
 
 static inline void log_disas(void *code, unsigned long size)
 {
-    disas(qemu_logfile, code, size);
+    QemuLogFile *logfile;
+    rcu_read_lock();
+    logfile = atomic_rcu_read(&qemu_logfile);
+    if (logfile) {
+        disas(logfile->fd, code, size);
+    }
+    rcu_read_unlock();
 }
 
 #if defined(CONFIG_USER_ONLY)
 /* page_dump() output to the log file: */
-static inline void log_page_dump(void)
+static inline void log_page_dump(const char *operation)
 {
-    page_dump(qemu_logfile);
+    FILE *logfile = qemu_log_lock();
+    if (logfile) {
+        qemu_log("page layout changed following %s\n", operation);
+        page_dump(logfile);
+    }
+    qemu_log_unlock(logfile);
 }
 #endif
 #endif