[PATCH] Add GLIBC_PTHREAD_ELISION_ENABLE tunable

[Mike Frysinger]

On 11 Sep 2015 14:57, Paul E. Murphy wrote:
> +  /* Check environment to see if we should enable LE.  */
> +  for (; *environ != NULL; environ++)
> +    if (strcmp (*environ, "GLIBC_PTHREAD_ELISION_ENABLE=yes") == 0)
> +      __pthread_force_elision = __libc_enable_secure ? 0 : elision_available;

there should be a new internal header for checking the values of tunables so
that we don't end up with lots of duplication (like this patch already does).
for the functions that cannot call getenv, there should be a static inline
function that they can call (which i imagine would look like this).
-mike
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