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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-02-22 18:46:03 +0100 |
|---|---|---|
| committer | Jeff Vander Stoep <jeffv@google.com> | 2016-09-22 13:38:22 -0700 |
| commit | 477376b452f0d5fc564dfe2d0fc0fe8156051bb1 (patch) | |
| tree | 89ca5514874d92638d2a9e237103c97ea29955ba /tools/perf/scripts | |
| parent | 298b730c260f6766a31ac4b3fa203d7d251a9cbd (diff) | |
UPSTREAM: arm64: mm: only perform memstart_addr sanity check if DEBUG_VM
Checking whether memstart_addr has been assigned every time it is
referenced adds a branch instruction that may hurt performance if
the reference in question occurs on a hot path. So only perform the
check if CONFIG_DEBUG_VM=y.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[catalin.marinas@arm.com: replaced #ifdef with VM_BUG_ON]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit a92405f082d43267575444a6927085e4c8a69e4e)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: Ia5f206d9a2dbbdbfc3f05fe985d4eca309f0d889
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions