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| author | David Goulet <dgoulet@torproject.org> | 2017-08-31 09:56:55 -0400 |
|---|---|---|
| committer | David Goulet <dgoulet@torproject.org> | 2017-09-15 11:40:59 -0400 |
| commit | 8424c4f35bd77f5b83113a74c424ca6d12393f1d (patch) | |
| tree | 2cacb7f86d6e7ecd0968631606fcd2448c3ced8e /configure.ac | |
| parent | dde358667d386d2c7b28866b029effa062ab9b6d (diff) | |
| download | tor-8424c4f35bd77f5b83113a74c424ca6d12393f1d.tar.gz tor-8424c4f35bd77f5b83113a74c424ca6d12393f1d.zip | |
sched: Detect KIST support at compile time
Add a detection for the KIST scheduler in our build system and set
HAVE_KIST_SUPPORT if available.
Adapt the should use kist function with this new compile option.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 1e41b3f080..c449294d0f 100644 --- a/configure.ac +++ b/configure.ac @@ -792,6 +792,34 @@ AC_CHECK_MEMBERS([SSL.state], , , [#include <openssl/ssl.h> ]) +dnl Define the set of checks for KIST scheduler support. +AC_DEFUN([CHECK_KIST_SUPPORT],[ + dnl KIST needs struct tcp_info and for certain members to exist. + AC_CHECK_MEMBERS( + [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss], + , ,[[#include <netinet/tcp.h>]]) + dnl KIST needs SIOCOUTQNSD to exist for an ioctl call. + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ + #include <linux/sockios.h> + #ifndef SIOCOUTQNSD + #error + #endif + ])], have_siocoutqnsd=yes, have_siocoutqnsd=no) + if test "x$have_siocoutqnsd" = "xyes"; then + if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then + if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then + have_kist_support=yes + fi + fi + fi +]) +dnl Now, trigger the check. +CHECK_KIST_SUPPORT +AS_IF([test "x$have_kist_support" = "xyes"], + [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported + on this system])], + [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])]) + LIBS="$save_LIBS" LDFLAGS="$save_LDFLAGS" CPPFLAGS="$save_CPPFLAGS" |