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In Linux 5.10 the linux/frame.h header was renamed linux/objtool.h.
Add a configure check to detect and use the correctly named header.
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #11085
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The m4 objtool configure check can incorrectly fail because of a
missing header in the test. This appears to be the result of a
recent kernel change and was observed on the Fedora 5.8.11-200
kernel.
In file included from /home/fedora/zfs/build/objtool/objtool.c:75:
./arch/x86/include/asm/frame.h:100:57: error: 'struct pt_regs'
declared inside parameter list will not be visible outside
of this definition or declaration [-Werror]
The consequence of this is that the "stack_frame_non_standard"
check is never run and HAVE_STACK_FRAME_NON_STANDARD is set
incorrectly which results in a build failure. This change adds
the appropriate header to the "objtool" check so it now behaves
as intended.
Reviewed-by: Kjeld Schouten <[email protected]>
Reviewed-by: Tony Hutter <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #10990
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Reduce the time required for ./configure to perform the needed
KABI checks by allowing kbuild to compile multiple test cases in
parallel. This was accomplished by splitting each test's source
code from the logic handling whether that code could be compiled
or not.
By introducing this split it's possible to minimize the number of
times kbuild needs to be invoked. As importantly, it means all of
the tests can be built in parallel. This does require a little extra
care since we expect some tests to fail, so the --keep-going (-k)
option must be provided otherwise some tests may not get compiled.
Furthermore, since a failure during the kbuild modpost phase will
result in an early exit; the final linking phase is limited to tests
which passed the initial compilation and produced an object file.
Once everything has been built the configure script proceeds as
previously. The only significant difference is that it now merely
needs to test for the existence of a .ko file to determine the
result of a given test. This vastly speeds up the entire process.
New test cases should use ZFS_LINUX_TEST_SRC to declare their test
source code and ZFS_LINUX_TEST_RESULT to check the result. All of
the existing kernel-*.m4 files have been updated accordingly, see
config/kernel-current-time.m4 for a basic example. The legacy
ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases
but it's use is not encouraged.
master (secs) patched (secs)
------------- ----------------
autogen.sh 61 68
configure 137 24 (~17% of current run time)
make -j $(nproc) 44 44
make rpms 287 150
Reviewed-by: Tony Hutter <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #8547
Closes #9132
Closes #9341
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Suppress incorrect warnings from versions of objtool which are not
aware of x86 EVEX prefix instructions used for AVX512.
module/zfs/vdev_raidz_math_avx512bw.o: warning:
objtool: <func+offset>: can't find jump dest instruction at .text
Reviewed-by: Don Brady <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #6928
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Properly annotate functions and data section so that objtool does not complain
when CONFIG_STACK_VALIDATION and CONFIG_FRAME_POINTER are enabled.
Pass KERNELCPPFLAGS to assembler.
Use kfpu_begin()/kfpu_end() to protect SIMD regions in Linux kernel.
Reviewed-by: Tom Caputi <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Gvozden Neskovic <[email protected]>
Closes #5872
Closes #5041
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