forked from pool/glibc
8c4777bd8f
- s390-elision-enable-envvar.patch: enable TLE only if GLIBC_ELISION_ENABLE=yes is defined (fate#322271) OBS-URL: https://build.opensuse.org/request/show/511655 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=465
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
Index: glibc-2.25/sysdeps/unix/sysv/linux/s390/elision-conf.c
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===================================================================
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--- glibc-2.25.orig/sysdeps/unix/sysv/linux/s390/elision-conf.c
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+++ glibc-2.25/sysdeps/unix/sysv/linux/s390/elision-conf.c
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@@ -21,6 +21,7 @@
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#include <elision-conf.h>
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#include <unistd.h>
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#include <dl-procinfo.h>
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+#include <string.h>
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/* Reasonable initial tuning values, may be revised in the future.
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This is a conservative initial value. */
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@@ -64,7 +65,17 @@ elision_init (int argc __attribute__ ((u
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When false elision is never attempted. */
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int elision_available = (GLRO (dl_hwcap) & HWCAP_S390_TE) ? 1 : 0;
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- __pthread_force_elision = __libc_enable_secure ? 0 : elision_available;
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+ /* Scan the environment and conditionally enable TLE. */
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+ if (elision_available != 0 && __libc_enable_secure == 0)
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+ {
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+ for ( ; *environ != NULL; environ++)
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+ if (**environ == 'G'
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+ && strcmp (*environ, "GLIBC_ELISION_ENABLE=yes") == 0)
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+ {
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+ __pthread_force_elision = elision_available;
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+ break;
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+ }
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+ }
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}
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#ifdef SHARED
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