diff options
| author | Ye Bin <yebin10@huawei.com> | 2025-10-25 16:00:03 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-12 10:00:16 -0800 |
| commit | 6c2e6e2c1af1809d1d9cdbd50ac80f54f5995bdb (patch) | |
| tree | 3961456c72c5a16f220bea70ebdff87a36543d26 /Documentation/admin-guide | |
| parent | a2b1c419ff72ec62ff5831684e30cd1d4f0b09ee (diff) | |
dynamic_debug: add support for print stack
In practical problem diagnosis, especially during the boot phase, it is
often desirable to know the call sequence. However, currently, apart from
adding print statements and recompiling the kernel, there seems to be no
good alternative. If dynamic_debug supported printing the call stack, it
would be very helpful for diagnosing issues. This patch add support '+d'
for dump stack.
Link: https://lkml.kernel.org/r/20251025080003.312536-1-yebin@huaweicloud.com
Signed-off-by: Ye Bin <yebin10@huawei.com>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/dynamic-debug-howto.rst | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst index 7c036590cd07..095a63892257 100644 --- a/Documentation/admin-guide/dynamic-debug-howto.rst +++ b/Documentation/admin-guide/dynamic-debug-howto.rst @@ -223,12 +223,13 @@ The flags are:: f Include the function name s Include the source file name l Include line number + d Include call trace For ``print_hex_dump_debug()`` and ``print_hex_dump_bytes()``, only the ``p`` flag has meaning, other flags are ignored. -Note the regexp ``^[-+=][fslmpt_]+$`` matches a flags specification. -To clear all flags at once, use ``=_`` or ``-fslmpt``. +Note the regexp ``^[-+=][fslmptd_]+$`` matches a flags specification. +To clear all flags at once, use ``=_`` or ``-fslmptd``. Debug messages during Boot Process |