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[Qemu-devel] [PULL 33/51] scripts/qemu-gdb: add simple tcg lock status h
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 33/51] scripts/qemu-gdb: add simple tcg lock status helper |
Date: |
Tue, 16 Jan 2018 15:17:15 +0100 |
From: Alex Bennée <address@hidden>
Add a simple helper to dump lock state.
Signed-off-by: Alex Bennée <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
scripts/qemu-gdb.py | 3 ++-
scripts/qemugdb/tcg.py | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+), 1 deletion(-)
create mode 100644 scripts/qemugdb/tcg.py
diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
index b3f8e04..d58213e 100644
--- a/scripts/qemu-gdb.py
+++ b/scripts/qemu-gdb.py
@@ -26,7 +26,7 @@ import os, sys
sys.path.append(os.path.dirname(__file__))
-from qemugdb import aio, mtree, coroutine
+from qemugdb import aio, mtree, coroutine, tcg
class QemuCommand(gdb.Command):
'''Prefix for QEMU debug support commands'''
@@ -38,6 +38,7 @@ QemuCommand()
coroutine.CoroutineCommand()
mtree.MtreeCommand()
aio.HandlersCommand()
+tcg.TCGLockStatusCommand()
coroutine.CoroutineSPFunction()
coroutine.CoroutinePCFunction()
diff --git a/scripts/qemugdb/tcg.py b/scripts/qemugdb/tcg.py
new file mode 100644
index 0000000..8c7f1d7
--- /dev/null
+++ b/scripts/qemugdb/tcg.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# GDB debugging support, TCG status
+#
+# Copyright 2016 Linaro Ltd
+#
+# Authors:
+# Alex Bennée <address@hidden>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+#
+# Contributions after 2012-01-13 are licensed under the terms of the
+# GNU GPL, version 2 or (at your option) any later version.
+
+# 'qemu tcg-lock-status' -- display the TCG lock status across threads
+
+import gdb
+
+class TCGLockStatusCommand(gdb.Command):
+ '''Display TCG Execution Status'''
+ def __init__(self):
+ gdb.Command.__init__(self, 'qemu tcg-lock-status', gdb.COMMAND_DATA,
+ gdb.COMPLETE_NONE)
+
+ def invoke(self, arg, from_tty):
+ gdb.write("Thread, BQL (iothread_mutex), Replay, Blocked?\n")
+ for thread in gdb.inferiors()[0].threads():
+ thread.switch()
+
+ iothread = gdb.parse_and_eval("iothread_locked")
+ replay = gdb.parse_and_eval("replay_locked")
+
+ frame = gdb.selected_frame()
+ if frame.name() == "__lll_lock_wait":
+ frame.older().select()
+ mutex = gdb.parse_and_eval("mutex")
+ owner = gdb.parse_and_eval("mutex->__data.__owner")
+ blocked = ("__lll_lock_wait waiting on %s from %d" %
+ (mutex, owner))
+ else:
+ blocked = "not blocked"
+
+ gdb.write("%d/%d, %s, %s, %s\n" % (thread.num, thread.ptid[1],
+ iothread, replay, blocked))
--
1.8.3.1
- [Qemu-devel] [PULL 24/51] disas/s390: fix global-buffer-overflow, (continued)
- [Qemu-devel] [PULL 24/51] disas/s390: fix global-buffer-overflow, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 21/51] tests: fix qmp-test leak, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 29/51] target/i386: move hflags update code to a function, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 28/51] tests/boot-serial-test: Add support for the raspi2 machine, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 31/51] target/i386: hax: Move x86_update_hflags., Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 35/51] icount: fixed saving/restoring of icount warp timers, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 30/51] target/i386: hax: change to use x86_update_hflags, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 34/51] scripts/qemu-gdb/timers.py: new helper to dump timer state, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 32/51] target-i386: update hflags on Hypervisor.framework, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 37/51] irq: fix memory leak, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 33/51] scripts/qemu-gdb: add simple tcg lock status helper,
Paolo Bonzini <=
- [Qemu-devel] [PULL 36/51] cpus: unify qemu_*_wait_io_event, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 41/51] chardev: Clean up previous patch indentation, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 38/51] net: Drop unusual use of do { } while (0);, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 39/51] mips: Tweak location of ';' in macros, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 40/51] chardev: Use goto/label instead of do/break/while(0), Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 42/51] tests: Avoid 'do/while(false); ' in vhost-user-bridge, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 43/51] maint: Fix macros with broken 'do/while(0); ' usage, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 45/51] cpu_physical_memory_sync_dirty_bitmap: Another alignment fix, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 44/51] checkpatch: Enforce proper do/while (0) style, Paolo Bonzini, 2018/01/16
- [Qemu-devel] [PULL 47/51] find_ram_offset: Align ram_addr_t allocation on long boundaries, Paolo Bonzini, 2018/01/16