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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2024-04-03 16:38:01 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-25 20:56:39 -0700 |
| commit | 15e4a5f5d8c9438530574d10241b8ece9f5edb61 (patch) | |
| tree | 4debac7300c0ef887d784bb7058df617811bd619 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | faab3d0f250aba863b19bb2d72daea0ae90a1d5d (diff) | |
| download | linux-15e4a5f5d8c9438530574d10241b8ece9f5edb61.tar.gz linux-15e4a5f5d8c9438530574d10241b8ece9f5edb61.zip | |
arm: mm: accelerate pagefault when VM_FAULT_BADACCESS
The vm_flags of vma already checked under per-VMA lock, if it is a bad
access, directly set fault to VM_FAULT_BADACCESS and handle error, no need
to retry with mmap_lock again. Since the page faut is handled under
per-VMA lock, count it as a vma lock event with VMA_LOCK_SUCCESS.
Link: https://lkml.kernel.org/r/20240403083805.1818160-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions