• Hiraku Toyooka's avatar
    selftests/pstore: add pstore test scripts going with reboot · f615e2bb
    Hiraku Toyooka authored
    To test pstore in earnest, we have to cause kernel crash and check
    pstore filesystem after reboot.
    
    We add two scripts:
     - pstore_crash_test
         This script causes kernel crash and reboot. It is executed by
         'make run_pstore_crash' in selftests. It can also be used with kdump.
     - pstore_post_reboot_tests
         This script includes test cases which check pstore's behavior after
         crash and reboot. It is executed together with pstore_tests by
         'make run_tests [-C pstore]' in selftests.
    
    The test cases in pstore_post_reboot_tests are currently following.
    
    - Check pstore backend is registered
    - Mount pstore filesystem
    - Check dmesg/console/pmsg files exist in pstore filesystem
    - Check dmesg/console files contain oops end marker
    - Check pmsg file properly keeps the content written before crash
    - Remove all files in pstore filesystem
    
    Example usage is following.
    
      (before reboot)
      # cd /path/to/selftests
      # make run_tests -C pstore
      === Pstore unit tests (pstore_tests) ===
      UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f
      ...
      selftests: pstore_tests [PASS]
      === Pstore unit tests (pstore_post_reboot_tests) ===
      UUID=953eb1bc-8e03-48d7-b27a-6552b24c5b7e
      Checking pstore backend is registered ... ok
              backend=ramoops
              cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000
      pstore_crash_test has not been executed yet. we skip further tests.
      selftests: pstore_post_reboot_tests [PASS]
    
      # make run_pstore_crash
      === Pstore unit tests (pstore_crash_test) ===
      UUID=93c8972d-1466-430b-8c4a-28d8681e74c6
      Checking pstore backend is registered ... ok
              backend=ramoops
              cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000
      Causing kernel crash ...
      (kernel crash and reboot)
      ...
    
      (after reboot)
      # make run_tests -C pstore
      === Pstore unit tests (pstore_tests) ===
      UUID=8e511e77-2285-499f-8bc0-900d9af1fbcc
      ...
      selftests: pstore_tests [PASS]
      === Pstore unit tests (pstore_post_reboot_tests) ===
      UUID=2dcc2132-4f3c-45aa-a38f-3b54bff8cef1
      Checking pstore backend is registered ... ok
              backend=ramoops
              cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000
      Mounting pstore filesystem ... ok
      Checking dmesg files exist in pstore filesystem ... ok
              dmesg-ramoops-0
              dmesg-ramoops-1
      Checking console files exist in pstore filesystem ... ok
              console-ramoops-0
      Checking pmsg files exist in pstore filesystem ... ok
              pmsg-ramoops-0
      Checking dmesg files contain oops end marker
              dmesg-ramoops-0 ... ok
              dmesg-ramoops-1 ... ok
      Checking console file contains oops end marker ... ok
      Checking pmsg file properly keeps the content written before crash ... ok
      Removing all files in pstore filesystem
              console-ramoops-0 ... ok
              dmesg-ramoops-0 ... ok
              dmesg-ramoops-1 ... ok
              pmsg-ramoops-0 ... ok
      selftests: pstore_post_reboot_tests [PASS]
    Signed-off-by: default avatarHiraku Toyooka <hiraku.toyooka.gu@hitachi.com>
    Cc: Shuah Khan <shuahkh@osg.samsung.com>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Anton Vorontsov <anton@enomsg.org>
    Cc: Colin Cross <ccross@android.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Mark Salyzyn <salyzyn@android.com>
    Cc: Seiji Aguchi <seiji.aguchi.tr@hitachi.com>
    Cc: linux-kernel@vger.kernel.org
    Cc: linux-api@vger.kernel.org
    Signed-off-by: default avatarShuah Khan <shuahkh@osg.samsung.com>
    f615e2bb
Makefile 309 Bytes