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| author | Ram Pai <linuxram@us.ibm.com> | 2020-06-05 02:52:39 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-05 05:06:27 +0300 |
| commit | 6e2c2d0fb7819a05765147286ed71d5bb96faa36 (patch) | |
| tree | a8dd21a1f77e3de465d6626d8d427a3e4c192667 /tools/testing/selftests/vm/pkey-helpers.h | |
| parent | 4e06e718afd71f99592a76a29167e9cd617b2b09 (diff) | |
| download | linux-6e2c2d0fb7819a05765147286ed71d5bb96faa36.tar.xz | |
selftests/vm/pkeys: introduce a sub-page allocator
This introduces a new allocator that allocates 4K hardware pages to back
64K linux pages. This allocator is available only on powerpc.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Link: http://lkml.kernel.org/r/c4a82fa962ec71015b994fab1aaf83bdfd091553.1585646528.git.sandipan@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/pkey-helpers.h')
| -rw-r--r-- | tools/testing/selftests/vm/pkey-helpers.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h index 59ccdff18214..622a85848f61 100644 --- a/tools/testing/selftests/vm/pkey-helpers.h +++ b/tools/testing/selftests/vm/pkey-helpers.h @@ -28,6 +28,9 @@ extern int dprint_in_signal; extern char dprint_in_signal_buffer[DPRINT_IN_SIGNAL_BUF_SIZE]; +extern int test_nr; +extern int iteration_nr; + #ifdef __GNUC__ __attribute__((format(printf, 1, 2))) #endif @@ -78,6 +81,9 @@ __attribute__((noinline)) int read_ptr(int *ptr); void expected_pkey_fault(int pkey); int sys_pkey_alloc(unsigned long flags, unsigned long init_val); int sys_pkey_free(unsigned long pkey); +int mprotect_pkey(void *ptr, size_t size, unsigned long orig_prot, + unsigned long pkey); +void record_pkey_malloc(void *ptr, long size, int prot); #if defined(__i386__) || defined(__x86_64__) /* arch */ #include "pkey-x86.h" |