__NR_signalfd     304 sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc     case __NR_signalfd:
__NR_signalfd    1234 sandbox/linux/services/arm_linux_syscalls.h #if !defined(__NR_signalfd)
__NR_signalfd    1281 sandbox/linux/services/x86_32_linux_syscalls.h #if !defined(__NR_signalfd)
__NR_signalfd    1141 sandbox/linux/services/x86_64_linux_syscalls.h #if !defined(__NR_signalfd)