Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 02ebac79609f9cbb858facadf8346ee3eaae361f
https://github.com/WebKit/WebKit/commit/02ebac79609f9cbb858facadf8346ee3eaae361f
Author: Yusuke Suzuki <[email protected]>
Date: 2023-08-08 (Tue, 08 Aug 2023)
Changed paths:
M Source/bmalloc/CMakeLists.txt
M Source/bmalloc/bmalloc.xcodeproj/project.pbxproj
M Source/bmalloc/libpas/libpas.xcodeproj/project.pbxproj
A Source/bmalloc/libpas/src/libpas/pas_allocation_result.c
M Source/bmalloc/libpas/src/libpas/pas_allocation_result.h
M Source/bmalloc/libpas/src/libpas/pas_internal_config.h
Log Message:
-----------
[libpas] Use VA-based memory-zeroing for very large allocations
https://bugs.webkit.org/show_bug.cgi?id=259938
rdar://113577292
Reviewed by Keith Miller.
Let's try using VA-based zeroing for very large allocations in libpas.
VA-based one has some cost, but still useful if the allocated memory is not used
so much actually. We already have a path avoiding this zeroing if the allocated
VA
is already zero, but if not, let's take this path to zeroing them via mmap.
* Source/bmalloc/CMakeLists.txt:
* Source/bmalloc/bmalloc.xcodeproj/project.pbxproj:
* Source/bmalloc/libpas/libpas.xcodeproj/project.pbxproj:
* Source/bmalloc/libpas/src/libpas/pas_allocation_result.c: Added.
(pas_allocation_result_zero_large_slow):
* Source/bmalloc/libpas/src/libpas/pas_allocation_result.h:
(pas_allocation_result_zero):
* Source/bmalloc/libpas/src/libpas/pas_internal_config.h:
Canonical link: https://commits.webkit.org/266698@main
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