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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-03-21 14:03:00 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-03-21 14:03:00 +0000 |
| commit | 3b17937e6437fe16e799e61d7e6ee99352741209 (patch) | |
| tree | 2ba5f35ce55d7b8c2dd086337621d9ea4cef80df /elf | |
| parent | 3e2be87832781a29ed67f38f87c1ce3dd4c1b866 (diff) | |
| download | glibc-azanella/cancel-wrappers-inline.tar.xz glibc-azanella/cancel-wrappers-inline.zip | |
linux: Inline __syscall_internal_cancel and __syscall_cancelazanella/cancel-wrappers-inline
It improves some interception tools such as valgrind, however on
multithread the __syscall_cancel_arch is called.
The result libc.so has a slight larger code size:
ABI master patched diff increase
aarch64 1658673 1669121 10448 0.63%
x86_64 1976656 1985744 9088 0.46%
i686 2233622 2251130 17508 0.78%
powerpc64le 2382448 2396768 14320 0.60%
It mimics internally how cancellable entrypoints were implemented
before 89b53077d2a58f00e7debdfe58afabe953dac60d, where cancellation
handlign were done inline in the syscall wraper.
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/elf/Makefile b/elf/Makefile index 3d60000ec9..47c235ccbb 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -1457,7 +1457,9 @@ $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os) # when compiled for libc. rtld-stubbed-symbols = \ __libc_assert_fail \ - __syscall_cancel \ + __syscall_cancel_arch \ + __libc_single_threaded_internal \ + __syscall_do_cancel \ calloc \ free \ malloc \ |