[Intel-gfx] [PATCH i-g-t 2/3 v3] tests/drv_module_reload: Convert sh script to C version.
Marius Vlad
marius.c.vlad at intel.com
Wed Oct 26 13:54:40 UTC 2016
v3:
- fix passing boolean value as flags to igt_kmod_unload().
v2:
- embedded gem_alive and gem_exec_store into test (Chris Wilson)
- int main() to igt_main (Chris Wilson)
- moved tests/gem_alive -> tools/gem_info (Chris Wilson)
- added to intel-ci/fast-feedback.testlist (Petri Latvala)
- added hda_dynamic_debug() (Petri Latvala)
- renamed from tests/drv_module_reload_basic to tests/drv_module_reload
(all subtests are basic and have been added to fast-feedback.testlist)
Signed-off-by: Marius Vlad <marius.c.vlad at intel.com>
Fix igt kmod unload
Signed-off-by: Marius Vlad <marius.c.vlad at intel.com>
---
tests/Makefile.am | 1 -
tests/Makefile.sources | 2 +-
tests/drv_module_reload.c | 394 ++++++++++++++++++++++++++++++++++
tests/drv_module_reload_basic | 105 ---------
tests/gem_alive.c | 35 ---
tests/intel-ci/fast-feedback.testlist | 13 +-
tools/Makefile.sources | 1 +
tools/intel_gem_info.c | 35 +++
8 files changed, 443 insertions(+), 143 deletions(-)
create mode 100644 tests/drv_module_reload.c
delete mode 100755 tests/drv_module_reload_basic
delete mode 100644 tests/gem_alive.c
create mode 100644 tools/intel_gem_info.c
diff --git a/tests/Makefile.am b/tests/Makefile.am
index a408126..14a41ae 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -26,7 +26,6 @@ noinst_PROGRAMS = \
$(NULL)
pkglibexec_PROGRAMS = \
- gem_alive \
gem_stress \
$(TESTS_progs) \
$(TESTS_progs_M) \
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 6d081c3..b1511c6 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -211,6 +211,7 @@ TESTS_progs = \
kms_pwrite_crc \
kms_sink_crc_basic \
prime_udl \
+ drv_module_reload \
$(NULL)
# IMPORTANT: The ZZ_ tests need to be run last!
@@ -221,7 +222,6 @@ TESTS_scripts_M = \
TESTS_scripts = \
debugfs_emon_crash \
drv_debugfs_reader \
- drv_module_reload_basic \
kms_sysfs_edid_timing \
sysfs_l3_parity \
test_rte_check \
diff --git a/tests/drv_module_reload.c b/tests/drv_module_reload.c
new file mode 100644
index 0000000..c9bd9e3
--- /dev/null
+++ b/tests/drv_module_reload.c
@@ -0,0 +1,394 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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 "igt.h"
+#include "igt_debugfs.h"
+#include "igt_aux.h"
+#include "igt_sysfs.h"
+#include "igt_core.h"
+
+#include <dirent.h>
+#include <sys/utsname.h>
+#include <linux/limits.h>
+#include <signal.h>
+#include <libgen.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+#include <libkmod.h>
+#include <proc/readproc.h>
+
+#define LOCAL_I915_EXEC_BSD_SHIFT (13)
+#define LOCAL_I915_EXEC_BSD_MASK (3 << LOCAL_I915_EXEC_BSD_SHIFT)
+
+#define ENGINE_MASK (I915_EXEC_RING_MASK | LOCAL_I915_EXEC_BSD_MASK)
+
+static void store_dword(int fd, unsigned ring)
+{
+ const int gen = intel_gen(intel_get_drm_devid(fd));
+ struct drm_i915_gem_exec_object2 obj[2];
+ struct drm_i915_gem_relocation_entry reloc;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ uint32_t batch[16];
+ int i;
+
+ gem_require_ring(fd, ring);
+ igt_skip_on_f(gen == 6 && (ring & ~(3<<13)) == I915_EXEC_BSD,
+ "MI_STORE_DATA broken on gen6 bsd\n");
+
+ intel_detect_and_clear_missed_interrupts(fd);
+ memset(&execbuf, 0, sizeof(execbuf));
+ execbuf.buffers_ptr = (uintptr_t)obj;
+ execbuf.buffer_count = 2;
+ execbuf.flags = ring;
+ if (gen < 6)
+ execbuf.flags |= I915_EXEC_SECURE;
+
+ memset(obj, 0, sizeof(obj));
+ obj[0].handle = gem_create(fd, 4096);
+ obj[1].handle = gem_create(fd, 4096);
+
+ memset(&reloc, 0, sizeof(reloc));
+ reloc.target_handle = obj[0].handle;
+ reloc.presumed_offset = 0;
+ reloc.offset = sizeof(uint32_t);
+ reloc.delta = 0;
+ reloc.read_domains = I915_GEM_DOMAIN_INSTRUCTION;
+ reloc.write_domain = I915_GEM_DOMAIN_INSTRUCTION;
+ obj[1].relocs_ptr = (uintptr_t)&reloc;
+ obj[1].relocation_count = 1;
+
+ i = 0;
+ batch[i] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
+ if (gen >= 8) {
+ batch[++i] = 0;
+ batch[++i] = 0;
+ } else if (gen >= 4) {
+ batch[++i] = 0;
+ batch[++i] = 0;
+ reloc.offset += sizeof(uint32_t);
+ } else {
+ batch[i]--;
+ batch[++i] = 0;
+ }
+ batch[++i] = 0xc0ffee;
+ batch[++i] = MI_BATCH_BUFFER_END;
+ gem_write(fd, obj[1].handle, 0, batch, sizeof(batch));
+ gem_execbuf(fd, &execbuf);
+ gem_close(fd, obj[1].handle);
+
+ gem_read(fd, obj[0].handle, 0, batch, sizeof(batch));
+ gem_close(fd, obj[0].handle);
+ igt_assert_eq(*batch, 0xc0ffee);
+ igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
+}
+
+static void store_all(int fd)
+{
+ const int gen = intel_gen(intel_get_drm_devid(fd));
+ struct drm_i915_gem_exec_object2 obj[2];
+ struct drm_i915_gem_relocation_entry reloc[32];
+ struct drm_i915_gem_execbuffer2 execbuf;
+ unsigned engines[16], permuted[16];
+ uint32_t batch[16];
+ uint64_t offset;
+ unsigned engine, nengine;
+ int value;
+ int i, j;
+
+ memset(&execbuf, 0, sizeof(execbuf));
+ execbuf.buffers_ptr = (uintptr_t)obj;
+ execbuf.buffer_count = 2;
+ if (gen < 6)
+ execbuf.flags |= I915_EXEC_SECURE;
+
+ memset(reloc, 0, sizeof(reloc));
+ memset(obj, 0, sizeof(obj));
+ obj[0].handle = gem_create(fd, 4096);
+ obj[1].handle = gem_create(fd, 4096);
+ obj[1].relocation_count = 1;
+
+ offset = sizeof(uint32_t);
+ i = 0;
+ batch[i] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
+ if (gen >= 8) {
+ batch[++i] = 0;
+ batch[++i] = 0;
+ } else if (gen >= 4) {
+ batch[++i] = 0;
+ batch[++i] = 0;
+ offset += sizeof(uint32_t);
+ } else {
+ batch[i]--;
+ batch[++i] = 0;
+ }
+ batch[value = ++i] = 0xc0ffee;
+ batch[++i] = MI_BATCH_BUFFER_END;
+
+ nengine = 0;
+ intel_detect_and_clear_missed_interrupts(fd);
+ for_each_engine(fd, engine) {
+ if (gen == 6 && (engine & ~(3<<13)) == I915_EXEC_BSD)
+ continue;
+
+ igt_assert(2*(nengine+1)*sizeof(batch) <= 4096);
+
+ execbuf.flags &= ~ENGINE_MASK;
+ execbuf.flags |= engine;
+
+ j = 2*nengine;
+ reloc[j].target_handle = obj[0].handle;
+ reloc[j].presumed_offset = ~0;
+ reloc[j].offset = j*sizeof(batch) + offset;
+ reloc[j].delta = nengine*sizeof(uint32_t);
+ reloc[j].read_domains = I915_GEM_DOMAIN_INSTRUCTION;
+ reloc[j].write_domain = I915_GEM_DOMAIN_INSTRUCTION;
+ obj[1].relocs_ptr = (uintptr_t)&reloc[j];
+
+ batch[value] = 0xdeadbeef;
+ gem_write(fd, obj[1].handle, j*sizeof(batch),
+ batch, sizeof(batch));
+ execbuf.batch_start_offset = j*sizeof(batch);
+ gem_execbuf(fd, &execbuf);
+
+ j = 2*nengine + 1;
+ reloc[j].target_handle = obj[0].handle;
+ reloc[j].presumed_offset = ~0;
+ reloc[j].offset = j*sizeof(batch) + offset;
+ reloc[j].delta = nengine*sizeof(uint32_t);
+ reloc[j].read_domains = I915_GEM_DOMAIN_INSTRUCTION;
+ reloc[j].write_domain = I915_GEM_DOMAIN_INSTRUCTION;
+ obj[1].relocs_ptr = (uintptr_t)&reloc[j];
+
+ batch[value] = nengine;
+ gem_write(fd, obj[1].handle, j*sizeof(batch),
+ batch, sizeof(batch));
+ execbuf.batch_start_offset = j*sizeof(batch);
+ gem_execbuf(fd, &execbuf);
+
+ engines[nengine++] = engine;
+ }
+ gem_sync(fd, obj[1].handle);
+
+ for (i = 0; i < nengine; i++) {
+ obj[1].relocs_ptr = (uintptr_t)&reloc[2*i];
+ execbuf.batch_start_offset = 2*i*sizeof(batch);
+ memcpy(permuted, engines, nengine*sizeof(engines[0]));
+ igt_permute_array(permuted, nengine, igt_exchange_int);
+ for (j = 0; j < nengine; j++) {
+ execbuf.flags &= ~ENGINE_MASK;
+ execbuf.flags |= permuted[j];
+ gem_execbuf(fd, &execbuf);
+ }
+ obj[1].relocs_ptr = (uintptr_t)&reloc[2*i+1];
+ execbuf.batch_start_offset = (2*i+1)*sizeof(batch);
+ execbuf.flags &= ~ENGINE_MASK;
+ execbuf.flags |= engines[i];
+ gem_execbuf(fd, &execbuf);
+ }
+ gem_close(fd, obj[1].handle);
+
+ gem_read(fd, obj[0].handle, 0, engines, sizeof(engines));
+ gem_close(fd, obj[0].handle);
+
+ for (i = 0; i < nengine; i++)
+ igt_assert_eq_u32(engines[i], i);
+ igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
+}
+
+static int
+reload(const char *opts_i915)
+{
+ kick_fbcon(false);
+
+ if (opts_i915)
+ igt_info("Reloading i915 with %s\n\n", opts_i915);
+
+ if (igt_kmod_is_loaded("snd_hda_intel")) {
+ if (igt_pkill(SIGTERM, "alsactl") == -1) {
+ return IGT_EXIT_FAILURE;
+ }
+ if (igt_kmod_unload("snd_hda_intel", 0) == -1)
+ return IGT_EXIT_FAILURE;
+ }
+
+ /* gen5 */
+ if (igt_kmod_is_loaded("intel_ips")) {
+ igt_kmod_unload("intel_ips", 0);
+ }
+
+ if (igt_kmod_unload("i915", 0) == -1) {
+ return IGT_EXIT_SKIP;
+ }
+
+ igt_info("i915.ko has been unloaded!\n");
+
+ if (igt_kmod_is_loaded("intel-gtt")) {
+ igt_kmod_unload("intel-gtt", 0);
+ }
+
+ igt_kmod_unload("drm_kms_helper", 0);
+ igt_kmod_unload("drm", 0);
+
+ if (igt_kmod_is_loaded("i915")) {
+ igt_info("WARNING: i915.ko still loaded!\n");
+ return IGT_EXIT_FAILURE;
+ } else {
+ igt_info("module successfully unloaded\n");
+ }
+
+ /* we do not have automatic loading of dependencies */
+ igt_kmod_load("drm", NULL);
+ igt_kmod_load("drm_kms_helper", NULL);
+
+ if (igt_kmod_load("i915", opts_i915) == -1) {
+ igt_info("Could not load i915\n");
+ return IGT_EXIT_FAILURE;
+ }
+
+ kick_fbcon(true);
+
+ if (igt_kmod_load("snd_hda_intel", NULL) == -1)
+ return IGT_EXIT_FAILURE;
+
+ return IGT_EXIT_SUCCESS;
+}
+
+static int
+gem_info(int fd)
+{
+ struct drm_i915_gem_sw_finish arg = { 0 };
+
+ signal(SIGALRM, SIG_IGN);
+
+ alarm(1);
+ if (ioctl(fd, DRM_IOCTL_I915_GEM_SW_FINISH, &arg) == 0) {
+ return IGT_EXIT_SKIP;
+ }
+
+ switch (errno) {
+ case ENOENT:
+ return 0;
+ case EIO:
+ return 1;
+ case EINTR:
+ return 2;
+ default:
+ return 3;
+ }
+}
+
+static int
+gem_exec_store(int fd)
+{
+ const struct intel_execution_engine *e;
+ igt_fixture {
+ igt_fork_hang_detector(fd);
+ }
+
+ for (e = intel_execution_engines; e->name; e++) {
+ igt_subtest_f("basic-exec-store-%s", e->name)
+ store_dword(fd, e->exec_id | e->flags);
+ }
+
+ igt_subtest("basic-exec-store-all")
+ store_all(fd);
+
+ igt_fixture
+ igt_stop_hang_detector();
+
+ return IGT_EXIT_SUCCESS;
+}
+
+static void
+hda_dynamic_debug(bool enable)
+{
+ FILE *fp;
+ const char snd_hda_intel_on[] = "module snd_hda_intel +pf";
+ const char snd_hda_core_on[] = "module snd_hda_core +pf";
+
+ const char snd_hda_intel_off[] = "module snd_hda_core =_";
+ const char snd_hda_core_off[] = "module snd_hda_intel =_";
+
+ fp = fopen("/sys/kernel/debug/dynamic_debug/control", "w");
+ igt_assert(fp != NULL);
+
+ if (enable) {
+ fwrite(snd_hda_intel_on, 1, sizeof(snd_hda_intel_on), fp);
+ fwrite(snd_hda_core_on, 1, sizeof(snd_hda_core_on), fp);
+ } else {
+ fwrite(snd_hda_intel_off, 1, sizeof(snd_hda_intel_off), fp);
+ fwrite(snd_hda_core_off, 1, sizeof(snd_hda_core_off), fp);
+ }
+
+ fclose(fp);
+}
+
+
+igt_main
+{
+ int i, err;
+ char buf[64];
+
+ igt_fixture
+ hda_dynamic_debug(true);
+
+ igt_subtest("basic-reload") {
+ if ((err = reload(NULL)))
+ igt_fail(err);
+ }
+
+ igt_subtest_group {
+ int fd;
+
+ igt_fixture
+ fd = __drm_open_driver(DRIVER_INTEL);
+
+ igt_subtest_group {
+ igt_subtest("basic-gem-info")
+ if ((err = gem_info(fd)))
+ igt_fail(err);
+ igt_subtest_group
+ if ((err = gem_exec_store(fd)))
+ igt_fail(err);
+ }
+
+ igt_fixture
+ close(fd);
+ }
+
+ igt_subtest("basic-reload-inject") {
+ for (i = 0; i < 4; i++) {
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, sizeof(buf), "inject_load_failure=%d", i);
+ reload(buf);
+ }
+ }
+
+ igt_subtest("basic-reload-final")
+ if ((err = reload(NULL)))
+ igt_fail(err);
+
+ igt_fixture
+ hda_dynamic_debug(false);
+}
diff --git a/tests/drv_module_reload_basic b/tests/drv_module_reload_basic
deleted file mode 100755
index b8cad88..0000000
--- a/tests/drv_module_reload_basic
+++ /dev/null
@@ -1,105 +0,0 @@
-#!/bin/bash
-#
-# Testcase: Reload the drm module
-#
-# ... we've broken this way too often :(
-#
-
-SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
-. $SOURCE_DIR/drm_lib.sh
-
-# no other drm service should be running, so we can just unbind
-
-# return 0 if module by name $1 is loaded according to lsmod
-function mod_loaded()
-{
- lsmod | grep -w "^$1" &> /dev/null
-}
-
-function reload() {
- local snd_hda_intel_unloaded
-
- echo Reloading i915.ko with $*
-
- # we must kick away fbcon (but only fbcon)
- for vtcon in /sys/class/vtconsole/vtcon*/ ; do
- if grep "frame buffer device" $vtcon/name > /dev/null ; then
- echo unbinding $vtcon: `cat $vtcon/name`
- echo 0 > $vtcon/bind
- fi
- done
-
- # The sound driver uses our power well
- pkill alsactl
- snd_hda_intel_unloaded=0
- if mod_loaded snd_hda_intel; then
- if rmmod snd_hda_intel; then
- snd_hda_intel_unloaded=1
- else
- lsmod >&2
- fi
- fi
-
- # gen5 only
- if mod_loaded intel_ips; then
- rmmod intel_ips
- fi
-
- if ! rmmod i915; then
- lsmod >&2
- return $IGT_EXIT_SKIP
- fi
- #ignore errors in intel-gtt, often built-in
- rmmod intel-gtt &> /dev/null
- # drm may be used by other devices (nouveau, radeon, udl, etc)
- rmmod drm_kms_helper &> /dev/null
- rmmod drm &> /dev/null
-
- if mod_loaded i915; then
- echo WARNING: i915.ko still loaded!
- return $IGT_EXIT_FAILURE
- else
- echo module successfully unloaded
- fi
-
- modprobe i915 $*
-
- if [ -f /sys/class/vtconsole/vtcon1/bind ]; then
- echo 1 > /sys/class/vtconsole/vtcon1/bind
- fi
-
- modprobe -q snd_hda_intel || return $snd_hda_intel_unloaded
-}
-
-function finish_load() {
- # does the device exist?
- if $SOURCE_DIR/gem_alive > /dev/null ; then
- echo "module successfully loaded again"
- else
- echo "failed to reload module successfully"
- return $IGT_EXIT_FAILURE
- fi
-
- # then try to run something
- if ! $SOURCE_DIR/gem_exec_store > /dev/null ; then
- echo "failed to execute a simple batch after reload"
- return $IGT_EXIT_FAILURE
- fi
-
- return $IGT_EXIT_SUCCESS
-}
-
-hda_dynamic_debug_enable
-
-reload || exit $?
-finish_load || exit $?
-
-# Repeat the module reload trying to to generate faults
-for i in $(seq 1 4); do
- reload inject_load_failure=$i
-done
-
-reload || exit $?
-finish_load
-
-exit $?
diff --git a/tests/gem_alive.c b/tests/gem_alive.c
deleted file mode 100644
index 7544443..0000000
--- a/tests/gem_alive.c
+++ /dev/null
@@ -1,35 +0,0 @@
-#include "igt.h"
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <signal.h>
-#include <i915_drm.h>
-
-
-int main(void)
-{
- struct drm_i915_gem_sw_finish arg = { 0 };
- int fd;
-
- signal(SIGALRM, SIG_IGN);
-
- fd = __drm_open_driver(DRIVER_INTEL);
- if (fd < 0)
- return IGT_EXIT_SKIP;
-
- alarm(1);
- if (ioctl(fd, DRM_IOCTL_I915_GEM_SW_FINISH, &arg) == 0)
- return IGT_EXIT_SKIP;
-
- switch (errno) {
- case ENOENT:
- return 0;
- case EIO:
- return 1;
- case EINTR:
- return 2;
- default:
- return 3;
- }
-}
diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index f59ec98..3c516ed 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -3,7 +3,18 @@ igt at core_prop_blob@basic
igt at drv_getparams_basic@basic-eu-total
igt at drv_getparams_basic@basic-subslice-total
igt at drv_hangman@error-state-basic
-igt at drv_module_reload_basic
+igt at drv_module_reload@basic-reload
+igt at drv_module_reload@basic-gem-info
+igt at drv_module_reload@basic-exec-store-default
+igt at drv_module_reload@basic-exec-store-render
+igt at drv_module_reload@basic-exec-store-bsd
+igt at drv_module_reload@basic-exec-store-bsd1
+igt at drv_module_reload@basic-exec-store-bsd2
+igt at drv_module_reload@basic-exec-store-blt
+igt at drv_module_reload@basic-exec-store-vebox
+igt at drv_module_reload@basic-exec-store-all
+igt at drv_module_reload@basic-reload-inject
+igt at drv_module_reload@basic-reload-final
igt at gem_basic@bad-close
igt at gem_basic@create-close
igt at gem_basic@create-fd-close
diff --git a/tools/Makefile.sources b/tools/Makefile.sources
index be58871..e2451ea 100644
--- a/tools/Makefile.sources
+++ b/tools/Makefile.sources
@@ -29,6 +29,7 @@ tools_prog_lists = \
intel_residency \
intel_stepping \
intel_watermark \
+ intel_gem_info \
$(NULL)
dist_bin_SCRIPTS = intel_gpu_abrt
diff --git a/tools/intel_gem_info.c b/tools/intel_gem_info.c
new file mode 100644
index 0000000..7544443
--- /dev/null
+++ b/tools/intel_gem_info.c
@@ -0,0 +1,35 @@
+#include "igt.h"
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <signal.h>
+#include <i915_drm.h>
+
+
+int main(void)
+{
+ struct drm_i915_gem_sw_finish arg = { 0 };
+ int fd;
+
+ signal(SIGALRM, SIG_IGN);
+
+ fd = __drm_open_driver(DRIVER_INTEL);
+ if (fd < 0)
+ return IGT_EXIT_SKIP;
+
+ alarm(1);
+ if (ioctl(fd, DRM_IOCTL_I915_GEM_SW_FINISH, &arg) == 0)
+ return IGT_EXIT_SKIP;
+
+ switch (errno) {
+ case ENOENT:
+ return 0;
+ case EIO:
+ return 1;
+ case EINTR:
+ return 2;
+ default:
+ return 3;
+ }
+}
--
2.7.4
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