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linux-kselftest-4.5-rc1

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This 14 patch update:
 
 - adds a new test for intel_pstate driver
 - adds empty string and async test cases to
   firmware class tests
 - fixes and cleans up several existing tests
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Merge tag 'linux-kselftest-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "This 14 patch update:

   - adds a new test for intel_pstate driver
   - adds empty string and async test cases to firmware class tests
   - fixes and cleans up several existing tests"

* tag 'linux-kselftest-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: firmware: add empty string and async tests
  firmware: actually return NULL on failed request_firmware_nowait()
  test: firmware_class: add asynchronous request trigger
  test: firmware_class: use kstrndup() where appropriate
  test: firmware_class: report errors properly on failure
  selftests/seccomp: fix 32-bit build warnings
  add breakpoints/.gitignore
  add ptrace/.gitignore
  update .gitignore in selftests/timers
  update .gitignore in selftests/vm
  tools, testing, add test for intel_pstate driver
  selftest/ipc: actually test it
  selftests/capabilities: actually test it
  selftests/capabilities: clean up for Makefile
This commit is contained in:
Linus Torvalds 2016-01-17 13:31:50 -08:00
commit 12768c1e2c
14 changed files with 379 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

79
lib/test_firmware.c
View file

@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/completion.h>
#include <linux/firmware.h>
#include <linux/device.h>
#include <linux/fs.h>
@ -54,10 +55,9 @@ static ssize_t trigger_request_store(struct device *dev,
int rc;
char *name;
name = kzalloc(count + 1, GFP_KERNEL);
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOSPC;
memcpy(name, buf, count);
pr_info("loading '%s'\n", name);
@ -65,17 +65,73 @@ static ssize_t trigger_request_store(struct device *dev,
release_firmware(test_firmware);
test_firmware = NULL;
rc = request_firmware(&test_firmware, name, dev);
if (rc)
if (rc) {
pr_info("load of '%s' failed: %d\n", name, rc);
pr_info("loaded: %zu\n", test_firmware ? test_firmware->size : 0);
goto out;
}
pr_info("loaded: %zu\n", test_firmware->size);
rc = count;
out:
mutex_unlock(&test_fw_mutex);
kfree(name);
return count;
return rc;
}
static DEVICE_ATTR_WO(trigger_request);
static DECLARE_COMPLETION(async_fw_done);
static void trigger_async_request_cb(const struct firmware *fw, void *context)
{
test_firmware = fw;
complete(&async_fw_done);
}
static ssize_t trigger_async_request_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int rc;
char *name;
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOSPC;
pr_info("loading '%s'\n", name);
mutex_lock(&test_fw_mutex);
release_firmware(test_firmware);
test_firmware = NULL;
rc = request_firmware_nowait(THIS_MODULE, 1, name, dev, GFP_KERNEL,
NULL, trigger_async_request_cb);
if (rc) {
pr_info("async load of '%s' failed: %d\n", name, rc);
kfree(name);
goto out;
}
/* Free 'name' ASAP, to test for race conditions */
kfree(name);
wait_for_completion(&async_fw_done);
if (test_firmware) {
pr_info("loaded: %zu\n", test_firmware->size);
rc = count;
} else {
pr_err("failed to async load firmware\n");
rc = -ENODEV;
}
out:
mutex_unlock(&test_fw_mutex);
return rc;
}
static DEVICE_ATTR_WO(trigger_async_request);
static int __init test_firmware_init(void)
{
int rc;
@ -92,9 +148,20 @@ static int __init test_firmware_init(void)
goto dereg;
}
rc = device_create_file(test_fw_misc_device.this_device,
&dev_attr_trigger_async_request);
if (rc) {
pr_err("could not create async sysfs interface: %d\n", rc);
goto remove_file;
}
pr_warn("interface ready\n");
return 0;
remove_file:
device_remove_file(test_fw_misc_device.this_device,
&dev_attr_trigger_async_request);
dereg:
misc_deregister(&test_fw_misc_device);
return rc;
@ -105,6 +172,8 @@ module_init(test_firmware_init);
static void __exit test_firmware_exit(void)
{
release_firmware(test_firmware);
device_remove_file(test_fw_misc_device.this_device,
&dev_attr_trigger_async_request);
device_remove_file(test_fw_misc_device.this_device,
&dev_attr_trigger_request);
misc_deregister(&test_fw_misc_device);