https://github.com/torvalds/linux
Revision 928501344fc645f80390afc12708c81b3595745d authored by Andrey Konovalov on 26 February 2021, 01:19:55 UTC, committed by Linus Torvalds on 26 February 2021, 17:41:02 UTC
Patch series "kasan: optimizations and fixes for HW_TAGS", v4. This patchset makes the HW_TAGS mode more efficient, mostly by reworking poisoning approaches and simplifying/inlining some internal helpers. With this change, the overhead of HW_TAGS annotations excluding setting and checking memory tags is ~3%. The performance impact caused by tags will be unknown until we have hardware that supports MTE. As a side-effect, this patchset speeds up generic KASAN by ~15%. This patch (of 13): Currently KASAN saves allocation stacks in both kasan_slab_alloc() and kasan_kmalloc() annotations. This patch changes KASAN to save allocation stacks for slab objects from kmalloc caches in kasan_kmalloc() only, and stacks for other slab objects in kasan_slab_alloc() only. This change requires ____kasan_kmalloc() knowing whether the object belongs to a kmalloc cache. This is implemented by adding a flag field to the kasan_info structure. That flag is only set for kmalloc caches via a new kasan_cache_create_kmalloc() annotation. Link: https://lkml.kernel.org/r/cover.1612546384.git.andreyknvl@google.com Link: https://lkml.kernel.org/r/7c673ebca8d00f40a7ad6f04ab9a2bddeeae2097.1612546384.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Branislav Rankov <Branislav.Rankov@arm.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: 928501344fc645f80390afc12708c81b3595745d authored by Andrey Konovalov on 26 February 2021, 01:19:55 UTC
kasan, mm: don't save alloc stacks twice
kasan, mm: don't save alloc stacks twice
Tip revision: 9285013
File | Mode | Size |
---|---|---|
platform | ||
acbuffer.h | -rw-r--r-- | 8.6 KB |
acconfig.h | -rw-r--r-- | 7.4 KB |
acexcep.h | -rw-r--r-- | 16.9 KB |
acnames.h | -rw-r--r-- | 2.1 KB |
acoutput.h | -rw-r--r-- | 16.4 KB |
acpi.h | -rw-r--r-- | 1.3 KB |
acpi_bus.h | -rw-r--r-- | 19.4 KB |
acpi_drivers.h | -rw-r--r-- | 3.0 KB |
acpi_io.h | -rw-r--r-- | 723 bytes |
acpi_lpat.h | -rw-r--r-- | 1.2 KB |
acpi_numa.h | -rw-r--r-- | 969 bytes |
acpiosxf.h | -rw-r--r-- | 11.3 KB |
acpixf.h | -rw-r--r-- | 30.6 KB |
acrestyp.h | -rw-r--r-- | 18.8 KB |
actbl.h | -rw-r--r-- | 18.3 KB |
actbl1.h | -rw-r--r-- | 40.5 KB |
actbl2.h | -rw-r--r-- | 45.4 KB |
actbl3.h | -rw-r--r-- | 20.4 KB |
actypes.h | -rw-r--r-- | 41.3 KB |
acuuid.h | -rw-r--r-- | 3.4 KB |
apei.h | -rw-r--r-- | 1.3 KB |
battery.h | -rw-r--r-- | 594 bytes |
button.h | -rw-r--r-- | 401 bytes |
cppc_acpi.h | -rw-r--r-- | 3.2 KB |
ghes.h | -rw-r--r-- | 3.6 KB |
hed.h | -rw-r--r-- | 370 bytes |
nfit.h | -rw-r--r-- | 351 bytes |
pcc.h | -rw-r--r-- | 651 bytes |
pdc_intel.h | -rw-r--r-- | 1.0 KB |
processor.h | -rw-r--r-- | 11.7 KB |
reboot.h | -rw-r--r-- | 201 bytes |
video.h | -rw-r--r-- | 2.8 KB |
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