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authorSandipan Das <sandipan@linux.ibm.com>2020-08-04 19:31:37 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2020-08-05 02:14:03 +0200
commita7aaa2f26bfd932a654706b19859e7adf802bee2 (patch)
tree32f805995d2ef5cfe6af15874eba3131371de4d0 /Documentation/features
parentpowerpc: Fix circular dependency between percpu.h and mmu.h (diff)
downloadlinux-a7aaa2f26bfd932a654706b19859e7adf802bee2.tar.xz
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selftests/powerpc: Fix pkey syscall redefinitions
On distros using older glibc versions, the pkey tests encounter build failures due to redefinition of the pkey syscall numbers. For compatibility, commit 743f3544fffb added a wrapper for the gettid() syscall and included syscall.h if the version of glibc used is older than 2.30. This leads to different definitions of SYS_pkey_* as the ones in the pkey test header set numeric constants where as the ones from syscall.h reuse __NR_pkey_*. The compiler complains about redefinitions since they are different. This replaces SYS_pkey_* definitions with __NR_pkey_* such that the definitions in both syscall.h and pkeys.h are alike. This way, if syscall.h has to be included for compatibility reasons, builds will still succeed. Fixes: 743f3544fffb ("selftests/powerpc: Add wrapper for gettid") Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com> Suggested-by: David Laight <david.laight@aculab.com> Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a4956d838bf59b0a71a2553c5ca81131ea8b49b9.1596561758.git.sandipan@linux.ibm.com
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