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authorLinus Torvalds <torvalds@linux-foundation.org>2023-09-04 13:20:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-09-04 13:20:19 -0700
commit3c31041e37324e143bee98604bb31481e905b4b3 (patch)
tree30472b0ba7cf8ab56c657f5681b740bbd41797fe /Documentation/core-api/printk-formats.rst
parent4accdb9895349026d85e526036ff28c07921d7cf (diff)
parentf0f692395353b99a54f7f6e5a8684d73af504879 (diff)
Merge tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek: - Do not try to get the console lock when it is not need or useful in panic() - Replace the global console_suspended state by a per-console flag - Export symbols needed for dumping the raw printk buffer in panic() - Fix documentation of printf formats for integer types - Moved Sergey Senozhatsky to the reviewer role - Misc cleanups * tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: export symbols for debug modules lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix() printk: ringbuffer: Fix truncating buffer size min_t cast printk: Rename abandon_console_lock_in_panic() to other_cpu_in_panic() printk: Add per-console suspended state printk: Consolidate console deferred printing printk: Do not take console lock for console_flush_on_panic() printk: Keep non-panic-CPUs out of console lock printk: Reduce console_unblank() usage in unsafe scenarios kdb: Do not assume write() callback available docs: printk-formats: Treat char as always unsigned docs: printk-formats: Fix hex printing of signed values MAINTAINERS: adjust printk/vsprintf entries
Diffstat (limited to 'Documentation/core-api/printk-formats.rst')
-rw-r--r--Documentation/core-api/printk-formats.rst9
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
index dfe7e75a71de..4451ef501936 100644
--- a/Documentation/core-api/printk-formats.rst
+++ b/Documentation/core-api/printk-formats.rst
@@ -15,9 +15,10 @@ Integer types
If variable is of Type, use printk format specifier:
------------------------------------------------------------
- char %d or %x
+ signed char %d or %hhx
unsigned char %u or %x
- short int %d or %x
+ char %u or %x
+ short int %d or %hx
unsigned short int %u or %x
int %d or %x
unsigned int %u or %x
@@ -27,9 +28,9 @@ Integer types
unsigned long long %llu or %llx
size_t %zu or %zx
ssize_t %zd or %zx
- s8 %d or %x
+ s8 %d or %hhx
u8 %u or %x
- s16 %d or %x
+ s16 %d or %hx
u16 %u or %x
s32 %d or %x
u32 %u or %x