linux-toradex.git/include/linux/kernel.h, branch v6.16-rc6

kernel.h: move PTR_IF() and u64_to_user_ptr() to util_macros.h

2025-05-12T00:54:06+00:00

While the natural choice of PTR_IF() is kconfig.h, the latter is too broad
to include C code and actually the macro was moved out from there in the
past.  But kernel.h is neither a good choice for that.  Move it to
util_macros.h.  Do the same for u64_to_user_ptr().

While moving, add necessary documentation.

Link: https://lkml.kernel.org/r/20250324105228.775784-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexandru Ardelean 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton

kernel.h: move READ/WRITE definitions to

2025-05-12T00:54:06+00:00

Patch series "kernel.h: Move out a couple of macros and constants".

kernel.h hosts a couple of macros and constants that may be better placed.
Do that.  Also add missing documentation.  No functional changes
intended.


This patch (of 2):

Headers shouldn't be forced to include  just to
gain these simple constants.

Link: https://lkml.kernel.org/r/20250324105228.775784-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20250324105228.775784-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar 
Signed-off-by: Andy Shevchenko 
Cc: Alexandru Ardelean 
Signed-off-by: Andrew Morton

tracing: Support to dump instance traces by ftrace_dump_on_oops

2024-03-18T14:33:06+00:00

Currently ftrace only dumps the global trace buffer on an OOPs. For
debugging a production usecase, instance trace will be helpful to
check specific problems since global trace buffer may be used for
other purposes.

This patch extend the ftrace_dump_on_oops parameter to dump a specific
or multiple trace instances:

  - ftrace_dump_on_oops=0: as before -- don't dump
  - ftrace_dump_on_oops[=1]: as before -- dump the global trace buffer
  on all CPUs
  - ftrace_dump_on_oops=2 or =orig_cpu: as before -- dump the global
  trace buffer on CPU that triggered the oops
  - ftrace_dump_on_oops=: new behavior -- dump the
  tracing instance matching 
  - ftrace_dump_on_oops[=2/orig_cpu],[=2/orig_cpu],
  [=2/orig_cpu]: new behavior -- dump the global trace
  buffer and multiple instance buffer on all CPUs, or only dump on CPU
  that triggered the oops if =2 or =orig_cpu is given

Also, the sysctl node can handle the input accordingly.

Link: https://lore.kernel.org/linux-trace-kernel/20240223083126.1817731-1-quic_hyiwei@quicinc.com

Cc: Ross Zwisler 
Cc: 
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Signed-off-by: Huang Yiwei 
Signed-off-by: Steven Rostedt (Google)

kernel.h: Move lib/cmdline.c prototypes to string.h

2024-02-29T21:38:03+00:00

The lib/cmdline.c is basically a set of some small string parsers
which are wide used in the kernel. Their prototypes belong to the
string.h rather then kernel.h.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20231003130142.2936503-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Kees Cook

kernel.h: Move upper__bits() and lower__bits() to wordpart.h

2024-02-29T21:38:01+00:00

The wordpart.h header is collecting APIs related to the handling
parts of the word (usually in byte granularity). The upper_*_bits()
and lower_*_bits() are good candidates to be moved to there.

This helps to clean up header dependency hell with regard to kernel.h
as the latter gathers completely unrelated stuff together and slows
down compilation (especially when it's included into other header).

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20240214172752.3605073-1-andriy.shevchenko@linux.intel.com
Reviewed-by: Randy Dunlap 
Signed-off-by: Kees Cook

kernel.h: removed REPEAT_BYTE from kernel.h

2024-02-01T17:47:59+00:00

This patch creates wordpart.h and includes it in asm/word-at-a-time.h
for all architectures. WORD_AT_A_TIME_CONSTANTS depends on kernel.h
because of REPEAT_BYTE. Moving this to another header and including it
where necessary allows us to not include the bloated kernel.h. Making
this implicit dependency on REPEAT_BYTE explicit allows for later
improvements in the lib/string.c inclusion list.

Suggested-by: Al Viro 
Suggested-by: Andy Shevchenko 
Signed-off-by: Tanzir Hasan 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20231226-libstringheader-v6-1-80aa08c7652c@google.com
Signed-off-by: Kees Cook

kernel.h: Move ARRAY_SIZE() to a separate header

2023-10-03T13:28:40+00:00

Touching files so used for the kernel,
forces 'make' to recompile most of the kernel.

Having those definitions in more granular files
helps avoid recompiling so much of the kernel.

Signed-off-by: Alejandro Colomar 
Reviewed-by: Giovanni Cabiddu 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20230817143352.132583-2-lucas.segarra.fernandez@intel.com
[andy: reduced to cover only string.h for now]
Signed-off-by: Andy Shevchenko

lib/vsprintf: split out sprintf() and friends

2023-08-21T20:46:24+00:00

Patch series "lib/vsprintf: Rework header inclusions", v3.

Some patches that reduce the mess with the header inclusions related to
vsprintf.c module.  Each patch has its own description, and has no
dependencies to each other, except the collisions over modifications of
the same places.  Hence the series.


This patch (of 2):

kernel.h is being used as a dump for all kinds of stuff for a long time. 
sprintf() and friends are used in many drivers without need of the full
kernel.h dependency train with it.

Here is the attempt on cleaning it up by splitting out sprintf() and
friends.

Link: https://lkml.kernel.org/r/20230814163344.17429-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20230814163344.17429-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Reviewed-by: Petr Mladek 
Cc: Alexander Potapenko 
Cc: Dmitry Vyukov 
Cc: Marco Elver 
Cc: Rasmus Villemoes 
Cc: Sergey Senozhatsky 
Cc: Steven Rostedt (Google) 
Signed-off-by: Andrew Morton

kernel.h: split out COUNT_ARGS() and CONCATENATE() to args.h

2023-08-18T17:18:56+00:00

Patch series "kernel.h: Split out a couple of macros to args.h", v4.

There are macros in kernel.h that can be used outside of that header. 
Split them to args.h and replace open coded variants.


This patch (of 4):

kernel.h is being used as a dump for all kinds of stuff for a long time. 
The COUNT_ARGS() and CONCATENATE() macros may be used in some places
without need of the full kernel.h dependency train with it.

Here is the attempt on cleaning it up by splitting out these macros().

While at it, include new header where it's being used.

Link: https://lkml.kernel.org/r/20230718211147.18647-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20230718211147.18647-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Acked-by: Steven Rostedt (Google) 
Cc: Bjorn Helgaas 
Acked-by: Bjorn Helgaas 	[PCI]
Cc: Brendan Higgins 
Cc: Daniel Latypov 
Cc: Dave Hansen 
Cc: David Gow 
Cc: "H. Peter Anvin" 
Cc: Ingo Molnar 
Cc: Lorenzo Pieralisi 
Cc: Mark Rutland 
Cc: Masami Hiramatsu (Google) 
Cc: Shuah Khan 
Cc: Sudeep Holla 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton

kernel.h: split the hexadecimal related helpers to hex.h

2023-04-08T20:45:38+00:00

For the sake of cleaning up the kernel.h split the hexadecimal related
helpers to own header called 'hex.h'.

Link: https://lkml.kernel.org/r/20230323155029.40000-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Rasmus Villemoes 
Signed-off-by: Andrew Morton