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nptl: Move more stack management variables into _rtld_global

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Permissions of the cached stacks may have to be updated if an object
is loaded that requires executable stacks, so the dynamic loader
needs to know about these cached stacks.

The move of in_flight_stack and stack_cache_actsize is a requirement for
merging __reclaim_stacks into the fork implementation in libc.

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-05-10 10:31:41 +02:00
parent d017b0ab5a
commit 9d124d81f0
4 changed files with 36 additions and 30 deletions
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elf/dl-support.c
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@ -192,6 +192,9 @@ int (*_dl_make_stack_executable_hook) (void **) = _dl_make_stack_executable;
#if THREAD_GSCOPE_IN_TCB
list_t _dl_stack_used;
list_t _dl_stack_user;
list_t _dl_stack_cache;
size_t _dl_stack_cache_actsize;
uintptr_t _dl_in_flight_stack;
int _dl_stack_cache_lock;
#else
int _dl_thread_gscope_count;