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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-06-15 15:41:00 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-06-22 12:09:52 -0300 |
| commit | ecf2661281c71a9752c7238ab93bc12b16cfff23 (patch) | |
| tree | 4adb5c607a25b04e7e3aff43e1eba5f26823140f /sysdeps/unix/sysv/linux/Makefile | |
| parent | 92f7b465101c23e45f66c6ad25ba243df49556a0 (diff) | |
| download | glibc-ecf2661281c71a9752c7238ab93bc12b16cfff23.tar.gz glibc-ecf2661281c71a9752c7238ab93bc12b16cfff23.tar.xz glibc-ecf2661281c71a9752c7238ab93bc12b16cfff23.zip | |
linux: Only use 64-bit syscall if required for ppoll
For !__ASSUME_TIME64_SYSCALLS there is no need to issue a 64-bit syscall if the provided timeout fits in a 32-bit one. The 64-bit usage should be rare since the timeout is a relative one. This also avoids the need to use supports_time64() (which breaks the usage case of live migration like CRIU or similar). Checked on i686-linux-gnu on a 4.15 kernel and on a 5.11 kernel (with and without --enable-kernel=5.1) and on x86_64-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'sysdeps/unix/sysv/linux/Makefile')
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 294c366e3b..c36ea0e494 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -137,6 +137,15 @@ tests-time64 += \ CFLAGS-tst-sigcontext-get_pc.c = -fasynchronous-unwind-tables +ifeq (yes,$(build-shared)) +librt = $(common-objpfx)rt/librt.so +else +librt = $(common-objpfx)rt/librt.a +endif + +$(objpfx)tst-ppoll: $(librt) +$(objpfx)tst-ppoll-time64: $(librt) + # Generate the list of SYS_* macros for the system calls (__NR_* # macros). The file syscall-names.list contains all possible system # call names, and the generated header file produces SYS_* macros for |