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