project-base/server-skynet-source-3rd-jemalloc
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use SYS_openat when available

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some architecture like AArch64 may not have the open syscall, but have
openat syscall. so check and use SYS_openat if SYS_openat available if
SYS_open is not supported at init_thp_state.
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RingsC 2019-10-13 23:11:23 +08:00 committed by Qi Wang
parent de81a4eada
commit 6924f83cb2
1 changed files with 3 additions and 0 deletions
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src/pages.c
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@ -563,6 +563,9 @@ init_thp_state(void) {
#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_open)
int fd = (int)syscall(SYS_open,
"/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
#elif defined(JEMALLOC_USE_SYSCALL) && defined(SYS_openat)
int fd = (int)syscall(SYS_openat,
AT_FDCWD, "/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
#else
int fd = open("/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
#endif