diff options
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 16 |
1 files changed, 8 insertions, 8 deletions
@@ -1139,12 +1139,14 @@ of this helper program; chances are you did not intend to run this program.\n\ /* Assign a module ID. */ GL(dl_rtld_map).l_tls_modid = _dl_next_tls_modid (); -# ifndef SHARED - /* If dynamic loading of modules with TLS is impossible we do not - have to initialize any of the TLS functionality unless any of the - initial modules uses TLS. */ + /* We do not initialize any of the TLS functionality unless any of the + initial modules uses TLS. This makes dynamic loading of modules with + TLS impossible, but to support it requires either eagerly doing setup + now or lazily doing it later. Doing it now makes us incompatible with + an old kernel that can't perform TLS_INIT_TP, even if no TLS is ever + used. Trying to do it lazily is too hairy to try when there could be + multiple threads (from a non-TLS-using libpthread). */ if (GL(dl_tls_max_dtv_idx) > 0) -# endif { struct link_map *l; size_t nelem; @@ -1555,9 +1557,7 @@ cannot allocate TLS data structures for initial thread"); GL(dl_initial_searchlist) = *GL(dl_main_searchlist); #ifdef USE_TLS -# ifndef SHARED - if (GL(dl_tls_max_dtv_idx) > 0) -# endif + if (GL(dl_tls_max_dtv_idx) > 0 || USE___THREAD) { /* Now that we have completed relocation, the initializer data for the TLS blocks has its final values and we can copy them |