| Make sync_file_range() usage optional |
| |
| Under uClibc, sync_file_range() is not available under all |
| architectures, so we fall back to fdatasync() in this case. |
| |
| Inspired by the patch done by Thomas Petazzoni for the |
| 2.0-pre25 version. |
| |
| Signed-off-by: Samuel Martin <s.martin49@gmail.com> |
| --- |
| configure.ac | 2 +- |
| src/common/compat/fcntl.h | 5 +++++ |
| 2 files changed, 6 insertions(+), 1 deletion(-) |
| |
| diff --git a/configure.ac b/configure.ac |
| index 5808c79..065b9cf 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -120,7 +120,7 @@ AS_IF([test "x$lttng_ust_support" = "xyes"], [ |
| |
| AM_CONDITIONAL([HAVE_LIBLTTNG_UST_CTL], [ test "x$ac_cv_lib_lttng_ust_ctl_ustctl_create_session" = "xyes" ]) |
| |
| -AC_CHECK_FUNCS([sched_getcpu sysconf]) |
| +AC_CHECK_FUNCS([sched_getcpu sysconf sync_file_range]) |
| |
| # check for dlopen |
| AC_CHECK_LIB([dl], [dlopen], |
| diff --git a/src/common/compat/fcntl.h b/src/common/compat/fcntl.h |
| index 58c1579..dafb33e 100644 |
| --- a/src/common/compat/fcntl.h |
| +++ b/src/common/compat/fcntl.h |
| @@ -23,10 +23,15 @@ |
| |
| #ifdef __linux__ |
| |
| +#if defined(HAVE_SYNC_FILE_RANGE) |
| extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes, |
| unsigned int flags); |
| #define lttng_sync_file_range(fd, offset, nbytes, flags) \ |
| compat_sync_file_range(fd, offset, nbytes, flags) |
| +#else |
| +#define lttng_sync_file_range(fd, offset, nbytes, flags) \ |
| + fdatasync(fd); |
| +#endif |
| |
| #elif defined(__FreeBSD__) |
| |
| -- |
| 1.7.10 |
| |
