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[Qemu-devel] [PULL 20/29] qemu-log: new option -dfilter to limit output
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 20/29] qemu-log: new option -dfilter to limit output |
Date: |
Tue, 22 Mar 2016 15:17:00 +0100 |
From: Alex Bennée <address@hidden>
When debugging big programs or system emulation sometimes you want both
the verbosity of cpu,exec et all but don't want to generate lots of logs
for unneeded stuff. This patch adds a new option -dfilter which allows
you to specify interesting address ranges in the form:
-dfilter 0x8000..0x8fff,0xffffffc000080000+0x200,...
Then logging code can use the new qemu_log_in_addr_range() function to
decide if it will output logging information for the given range.
Signed-off-by: Alex Bennée <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
include/qemu/log.h | 2 +
qemu-options.hx | 18 +++++++++
tests/Makefile | 4 ++
tests/test-logging.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++
util/log.c | 87 +++++++++++++++++++++++++++++++++++++++++
vl.c | 3 ++
6 files changed, 221 insertions(+)
create mode 100644 tests/test-logging.c
diff --git a/include/qemu/log.h b/include/qemu/log.h
index 523c886..1d0222d 100644
--- a/include/qemu/log.h
+++ b/include/qemu/log.h
@@ -122,6 +122,8 @@ static inline void qemu_set_log(int log_flags)
}
void qemu_set_log_filename(const char *filename);
+void qemu_set_dfilter_ranges(const char *ranges);
+bool qemu_log_in_addr_range(uint64_t addr);
int qemu_str_to_log_mask(const char *str);
/* Print a usage message listing all the valid logging categories
diff --git a/qemu-options.hx b/qemu-options.hx
index 732ed8c..c8bb70c 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3163,6 +3163,24 @@ STEXI
Output log in @var{logfile} instead of to stderr
ETEXI
+DEF("dfilter", HAS_ARG, QEMU_OPTION_DFILTER, \
+ "-dfilter range,.. filter debug output to range of addresses (useful for
-d cpu,exec,etc..)\n",
+ QEMU_ARCH_ALL)
+STEXI
address@hidden -dfilter @var{range1}[,...]
address@hidden -dfilter
+Filter debug output to that relevant to a range of target addresses. The filter
+spec can be either @address@hidden, @address@hidden or
address@hidden@var{end} where @var{start} @var{end} and @var{size} are the
+addresses and sizes required. For example:
address@hidden
+ -dfilter 0x8000..0x8fff,0xffffffc000080000+0x200,0xffffffc000060000-0x1000
address@hidden example
+Will dump output for any code in the 0x1000 sized block starting at 0x8000 and
+the 0x200 sized block starting at 0xffffffc000080000 and another 0x1000 sized
+block starting at 0xffffffc00005f000.
+ETEXI
+
DEF("L", HAS_ARG, QEMU_OPTION_L, \
"-L path set the directory for the BIOS, VGA BIOS and keymaps\n",
QEMU_ARCH_ALL)
diff --git a/tests/Makefile b/tests/Makefile
index 60371ca..d27e31d 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -97,6 +97,8 @@ check-unit-y += tests/test-crypto-ivgen$(EXESUF)
check-unit-y += tests/test-crypto-afsplit$(EXESUF)
check-unit-y += tests/test-crypto-xts$(EXESUF)
check-unit-y += tests/test-crypto-block$(EXESUF)
+gcov-files-test-logging-y = tests/test-logging.c
+check-unit-y += tests/test-logging$(EXESUF)
check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
@@ -436,6 +438,8 @@ tests/test-timed-average$(EXESUF):
tests/test-timed-average.o qemu-timer.o \
tests/test-base64$(EXESUF): tests/test-base64.o \
libqemuutil.a libqemustub.a
+tests/test-logging$(EXESUF): tests/test-logging.o $(test-util-obj-y)
+
tests/test-qapi-types.c tests/test-qapi-types.h :\
$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json
$(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
diff --git a/tests/test-logging.c b/tests/test-logging.c
new file mode 100644
index 0000000..193fa92
--- /dev/null
+++ b/tests/test-logging.c
@@ -0,0 +1,107 @@
+/*
+ * logging unit-tests
+ *
+ * Copyright (C) 2016 Linaro Ltd.
+ *
+ * Author: Alex Bennée <address@hidden>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include <glib.h>
+
+#include "qemu-common.h"
+#include "include/qemu/log.h"
+
+static void test_parse_range(void)
+{
+ qemu_set_dfilter_ranges("0x1000+0x100");
+
+ g_assert_false(qemu_log_in_addr_range(0xfff));
+ g_assert(qemu_log_in_addr_range(0x1000));
+ g_assert(qemu_log_in_addr_range(0x1001));
+ g_assert(qemu_log_in_addr_range(0x10ff));
+ g_assert_false(qemu_log_in_addr_range(0x1100));
+
+ qemu_set_dfilter_ranges("0x1000-0x100");
+
+ g_assert_false(qemu_log_in_addr_range(0x1001));
+ g_assert(qemu_log_in_addr_range(0x1000));
+ g_assert(qemu_log_in_addr_range(0x0f01));
+ g_assert_false(qemu_log_in_addr_range(0x0f00));
+
+ qemu_set_dfilter_ranges("0x1000..0x1100");
+
+ g_assert_false(qemu_log_in_addr_range(0xfff));
+ g_assert(qemu_log_in_addr_range(0x1000));
+ g_assert(qemu_log_in_addr_range(0x1100));
+ g_assert_false(qemu_log_in_addr_range(0x1101));
+
+ qemu_set_dfilter_ranges("0x1000..0x1000");
+
+ g_assert_false(qemu_log_in_addr_range(0xfff));
+ g_assert(qemu_log_in_addr_range(0x1000));
+ g_assert_false(qemu_log_in_addr_range(0x1001));
+
+ qemu_set_dfilter_ranges("0x1000+0x100,0x2100-0x100,0x3000..0x3100");
+ g_assert(qemu_log_in_addr_range(0x1050));
+ g_assert(qemu_log_in_addr_range(0x2050));
+ g_assert(qemu_log_in_addr_range(0x3050));
+}
+
+#ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
+static void test_parse_invalid_range_subprocess(void)
+{
+ qemu_set_dfilter_ranges("0x1000+onehundred");
+}
+static void test_parse_invalid_range(void)
+{
+ g_test_trap_subprocess("/logging/parse_invalid_range/subprocess", 0, 0);
+ g_test_trap_assert_failed();
+ g_test_trap_assert_stdout("");
+ g_test_trap_assert_stderr("*Failed to parse range in:
0x1000+onehundred\n");
+}
+static void test_parse_zero_range_subprocess(void)
+{
+ qemu_set_dfilter_ranges("0x1000+0");
+}
+static void test_parse_zero_range(void)
+{
+ g_test_trap_subprocess("/logging/parse_zero_range/subprocess", 0, 0);
+ g_test_trap_assert_failed();
+ g_test_trap_assert_stdout("");
+ g_test_trap_assert_stderr("*Failed to parse range in: 0x1000+0\n");
+}
+#endif
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+
+ g_test_add_func("/logging/parse_range", test_parse_range);
+#ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
+ g_test_add_func("/logging/parse_invalid_range/subprocess",
test_parse_invalid_range_subprocess);
+ g_test_add_func("/logging/parse_invalid_range", test_parse_invalid_range);
+ g_test_add_func("/logging/parse_zero_range/subprocess",
test_parse_zero_range_subprocess);
+ g_test_add_func("/logging/parse_zero_range", test_parse_zero_range);
+#endif
+
+ return g_test_run();
+}
diff --git a/util/log.c b/util/log.c
index 4e69586..671b617 100644
--- a/util/log.c
+++ b/util/log.c
@@ -20,12 +20,16 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/log.h"
+#include "qemu/range.h"
+#include "qemu/error-report.h"
+#include "qemu/cutils.h"
#include "trace/control.h"
static char *logfilename;
FILE *qemu_logfile;
int qemu_loglevel;
static int log_append = 0;
+static GArray *debug_regions;
void qemu_log(const char *fmt, ...)
{
@@ -94,6 +98,89 @@ void qemu_set_log_filename(const char *filename)
qemu_set_log(qemu_loglevel);
}
+/* Returns true if addr is in our debug filter or no filter defined
+ */
+bool qemu_log_in_addr_range(uint64_t addr)
+{
+ if (debug_regions) {
+ int i = 0;
+ for (i = 0; i < debug_regions->len; i++) {
+ struct Range *range = &g_array_index(debug_regions, Range, i);
+ if (addr >= range->begin && addr <= range->end) {
+ return true;
+ }
+ }
+ return false;
+ } else {
+ return true;
+ }
+}
+
+
+void qemu_set_dfilter_ranges(const char *filter_spec)
+{
+ gchar **ranges = g_strsplit(filter_spec, ",", 0);
+ if (ranges) {
+ gchar **next = ranges;
+ gchar *r = *next++;
+ debug_regions = g_array_sized_new(FALSE, FALSE,
+ sizeof(Range),
g_strv_length(ranges));
+ while (r) {
+ char *range_op = strstr(r, "-");
+ char *r2 = range_op ? range_op + 1 : NULL;
+ if (!range_op) {
+ range_op = strstr(r, "+");
+ r2 = range_op ? range_op + 1 : NULL;
+ }
+ if (!range_op) {
+ range_op = strstr(r, "..");
+ r2 = range_op ? range_op + 2 : NULL;
+ }
+ if (range_op) {
+ const char *e = NULL;
+ uint64_t r1val, r2val;
+
+ if ((qemu_strtoull(r, &e, 0, &r1val) == 0) &&
+ (qemu_strtoull(r2, NULL, 0, &r2val) == 0) &&
+ r2val > 0) {
+ struct Range range;
+
+ g_assert(e == range_op);
+
+ switch (*range_op) {
+ case '+':
+ {
+ range.begin = r1val;
+ range.end = r1val + (r2val - 1);
+ break;
+ }
+ case '-':
+ {
+ range.end = r1val;
+ range.begin = r1val - (r2val - 1);
+ break;
+ }
+ case '.':
+ range.begin = r1val;
+ range.end = r2val;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ g_array_append_val(debug_regions, range);
+
+ } else {
+ g_error("Failed to parse range in: %s", r);
+ }
+ } else {
+ g_error("Bad range specifier in: %s", r);
+ }
+ r = *next++;
+ }
+ g_strfreev(ranges);
+ }
+}
+
const QEMULogItem qemu_log_items[] = {
{ CPU_LOG_TB_OUT_ASM, "out_asm",
"show generated host assembly code for each compiled TB" },
diff --git a/vl.c b/vl.c
index 6566da2..ae35176 100644
--- a/vl.c
+++ b/vl.c
@@ -3355,6 +3355,9 @@ int main(int argc, char **argv, char **envp)
case QEMU_OPTION_D:
log_file = optarg;
break;
+ case QEMU_OPTION_DFILTER:
+ qemu_set_dfilter_ranges(optarg);
+ break;
case QEMU_OPTION_s:
add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
break;
--
2.5.0
- [Qemu-devel] [PULL 05/29] include/qemu/iov.h: Don't include qemu-common.h, (continued)
- [Qemu-devel] [PULL 05/29] include/qemu/iov.h: Don't include qemu-common.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 06/29] include/hw/hw.h: Don't include qemu-common.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 10/29] Move ParallelIOArg from qemu-common.h to sysemu/char.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 12/29] include/crypto: Include qapi-types.h or qemu/bswap.h instead of qemu-common.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 13/29] hw: explicitly include qemu-common.h and cpu.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 01/29] include/qemu/osdep.h: Don't include qapi/error.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 14/29] Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 16/29] tcg: pass down TranslationBlock to tcg_code_gen, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 21/29] qemu-log: dfilter-ise exec, out_asm, op and opt_op, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 18/29] qemu-log: Avoid function call for disabled qemu_log_mask logging, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 20/29] qemu-log: new option -dfilter to limit output,
Paolo Bonzini <=
- [Qemu-devel] [PULL 19/29] qemu-log: Improve the "exec" TB execution logging, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 17/29] qemu-log: correct help text for -d cpu, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 23/29] qemu-log: support simple pid substitution for logs, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 22/29] target-arm: dfilter support for in_asm, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 26/29] char: translate from QIOChannel error to errno, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 15/29] util: move declarations out of qemu-common.h, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 25/29] exec: fix error handling in file_ram_alloc, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 24/29] cputlb: modernise the debug support, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 28/29] config.status: Pass extra parameters, Paolo Bonzini, 2016/03/22
- [Qemu-devel] [PULL 29/29] target-i386: implement PKE for TCG, Paolo Bonzini, 2016/03/22