diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | INSTALL | 18 | ||||
| -rw-r--r-- | NEWS | 3 | ||||
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | manual/install.texi | 13 |
6 files changed, 27 insertions, 19 deletions
@@ -1,3 +1,11 @@ +2017-06-15 Siddhesh Poyarekar <siddhesh@sourceware.org> + + * configure.ac(--enable-tunables): Enable by default. + * configure: Regenerate. + * NEWS: Mention change. + * manual/install.texi (enable-tunables): Adjust documentation. + * INSTALL: Regenerate. + 2017-06-14 Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #18988] @@ -177,18 +177,16 @@ will be used, and CFLAGS sets optimization options for the compiler. '--enable-tunables' Tunables support allows additional library parameters to be - customized at runtime. This is an experimental feature and affects - startup time and is thus disabled by default. This option can take - the following values: - - 'no' - This is the default if the option is not passed to configure. - This disables tunables. + customized at runtime. This feature is enabled by default. This + option can take the following values: 'yes' - This is the default if the option is passed to configure. - This enables tunables and selects the default frontend - (currently 'valstring'). + This is the default if no option is passed to configure. This + enables tunables and selects the default frontend (currently + 'valstring'). + + 'no' + This option disables tunables. 'valstring' This enables tunables and selects the 'valstring' frontend for @@ -95,6 +95,9 @@ Version 2.26 as atomic variables to try to implement Dekker's mutual exclusion algorithm). +* The tunables feature is now enabled by default. This allows users to tweak + behavior of the GNU C Library using the GLIBC_TUNABLES environment variable. + Security related changes: * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes, @@ -3725,7 +3725,7 @@ fi if test "${enable_tunables+set}" = set; then : enableval=$enable_tunables; have_tunables=$enableval else - have_tunables=no + have_tunables=yes fi diff --git a/configure.ac b/configure.ac index 3f486d6df4..4c0a18edd9 100644 --- a/configure.ac +++ b/configure.ac @@ -436,7 +436,7 @@ AC_ARG_ENABLE([tunables], [AS_HELP_STRING([--enable-tunables], [Enable tunables support. Known values are 'yes', 'no' and 'valstring'])], [have_tunables=$enableval], - [have_tunables=no]) + [have_tunables=yes]) AC_SUBST(have_tunables) if test "$have_tunables" = yes; then AC_DEFINE(HAVE_TUNABLES) diff --git a/manual/install.texi b/manual/install.texi index d39d2daacd..cbc912817a 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -208,18 +208,17 @@ Use this option to disable the vector math library. @item --enable-tunables Tunables support allows additional library parameters to be customized at -runtime. This is an experimental feature and affects startup time and is thus -disabled by default. This option can take the following values: +runtime. This feature is enabled by default. This option can take the +following values: @table @code -@item no -This is the default if the option is not passed to configure. This disables -tunables. - @item yes -This is the default if the option is passed to configure. This enables tunables +This is the default if no option is passed to configure. This enables tunables and selects the default frontend (currently @samp{valstring}). +@item no +This option disables tunables. + @item valstring This enables tunables and selects the @samp{valstring} frontend for tunables. This frontend allows users to specify tunables as a colon-separated list in a |