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Author SHA1 Message Date
Bala-Vignesh-Reddy e6fbd1759c selftests: complete kselftest include centralization 
This follow-up patch completes centralization of kselftest.h and
ksefltest_harness.h includes in remaining seltests files, replacing all
relative paths with a non-relative paths using shared -I include path in
lib.mk

Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on
riscv, arm64, x86_64 and powerpc arch.

[[email protected]: add selftests include path for kselftest.h]
  Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Bala-Vignesh-Reddy <[email protected]>
Suggested-by: Andrew Morton <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]/
Reviewed-by: Wei Yang <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Günther Noack <[email protected]>
Cc: Jakub Kacinski <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Mickael Salaun <[email protected]>
Cc: Ming Lei <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Simon Horman <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
 2025-11-27 14:24:31 -08:00
Vincent Donnefort b6f9cd83c6 selftests/ring-buffer: Add test for out-of-bound pgoff mapping 
Extend the ring-buffer mapping test coverage by checking an out-of-bound
pgoff which has proven to be problematic in the past.

Link: https://lore.kernel.org/r/[email protected]
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Signed-off-by: Vincent Donnefort <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
 2025-01-14 17:06:32 -07:00
Vincent Donnefort 75d7ff9aa0 selftests/ring-buffer: Handle meta-page bigger than the system 
Handle the case where the meta-page content is bigger than the system
page-size. This prepares the ground for extending features covered by
the meta-page.

Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/[email protected]
Acked-by: Shuah Khan <[email protected]>
Signed-off-by: Vincent Donnefort <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
 2024-09-11 12:25:12 -04:00
Vincent Donnefort 21ff365b5c selftests/ring-buffer: Verify the entire meta-page padding 
Improve the ring-buffer meta-page test coverage by checking for the
entire padding region to be 0 instead of just looking at the first 4
bytes.

Cc: [email protected]
Link: https://lore.kernel.org/[email protected]
Acked-by: Shuah Khan <[email protected]>
Signed-off-by: Vincent Donnefort <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
 2024-09-11 12:25:02 -04:00
Vincent Donnefort eb2dcde9f9 ring-buffer: Align meta-page to sub-buffers for improved TLB usage 
Previously, the mapped ring-buffer layout caused misalignment between
the meta-page and sub-buffers when the sub-buffer size was not a
multiple of PAGE_SIZE. This prevented hardware with larger TLB entries
from utilizing them effectively.

Add a padding with the zero-page between the meta-page and sub-buffers.
Also update the ring-buffer map_test to verify that padding.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Vincent Donnefort <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
 2024-08-26 13:42:23 -04:00
Edward Liaw cc937dad85 selftests: centralize -D_GNU_SOURCE= to CFLAGS in lib.mk 
Centralize the _GNU_SOURCE definition to CFLAGS in lib.mk.  Remove
redundant defines from Makefiles that import lib.mk.  Convert any usage of
"#define _GNU_SOURCE 1" to "#define _GNU_SOURCE".

This uses the form "-D_GNU_SOURCE=", which is equivalent to
"#define _GNU_SOURCE".

Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and
"#define _GNU_SOURCE 1", which is less commonly seen in source code and
would require many changes in selftests to avoid redefinition warnings.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Edward Liaw <[email protected]>
Suggested-by: John Hubbard <[email protected]>
Acked-by: Shuah Khan <[email protected]>
Reviewed-by: Muhammad Usama Anjum <[email protected]>
Cc: Albert Ou <[email protected]>
Cc: André Almeida <[email protected]>
Cc: Darren Hart <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Jarkko Sakkinen <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Kevin Tian <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Reinette Chatre <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
 2024-07-10 12:14:51 -07:00
Vincent Donnefort 75961e5541 ring-buffer/selftest: Add ring-buffer mapping test 
Map a ring-buffer, validate the meta-page before and after emitting few
events. Also check ring-buffer mapping boundaries and finally ensure the
tracing snapshot is mutually exclusive.

Link: https://lore.kernel.org/linux-trace-kernel/[email protected]

Cc: Shuah Khan <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Acked-by: Muhammad Usama Anjum <[email protected]>
Signed-off-by: Vincent Donnefort <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
 2024-05-13 18:09:56 -04:00