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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 23:25:33 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 18:32:25 +1000 |
| commit | e7bfc462d32fc417d3fea8ad07b62b59f000e925 (patch) | |
| tree | 0edee82e64f61f039995204b669dcf581341b178 /arch/powerpc/perf | |
| parent | 7e1e63c5e9d694c1198d410a6c7b2d0fa06da355 (diff) | |
| download | blackbird-op-linux-e7bfc462d32fc417d3fea8ad07b62b59f000e925.tar.gz blackbird-op-linux-e7bfc462d32fc417d3fea8ad07b62b59f000e925.zip | |
powerpc/mm: Use pte_user() instead of open coding
We have a common declaration in pte-common.h Add a book3s specific one
and switch to pte_user() in callchain.c. In a subsequent patch we will
switch _PAGE_USER to _PAGE_PRIVILEGED in the book3s version only.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/perf')
| -rw-r--r-- | arch/powerpc/perf/callchain.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index e04a6752b399..0071de76d776 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -137,7 +137,7 @@ static int read_user_stack_slow(void __user *ptr, void *buf, int nb) offset = addr & ((1UL << shift) - 1); pte = READ_ONCE(*ptep); - if (!pte_present(pte) || !(pte_val(pte) & _PAGE_USER)) + if (!pte_present(pte) || !pte_user(pte)) goto err_out; pfn = pte_pfn(pte); if (!page_is_ram(pfn)) |
