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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-04-17 10:00:35 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-06-07 11:11:37 +0530 |
| commit | ea9b0ecbf0e7b6e8281047624efbe1b2cbb6d487 (patch) | |
| tree | 59984b1e6f5bc7e5f66a349e69359fd33090393a /elf | |
| parent | 44330b6d32904fdc8b6835a112e0ba0aee9f4ef3 (diff) | |
| download | glibc-ea9b0ecbf0e7b6e8281047624efbe1b2cbb6d487.tar.gz | |
tunables: Add LD_HWCAP_MASK to tunables
Add LD_HWCAP_MASK to tunables in preparation of it being removed from
rtld.c. This allows us to read LD_HWCAP_MASK much earlier so that it
can influence IFUNC resolution in aarch64.
This patch does not actually do anything other than read the
LD_HWCAP_MASK variable and add the tunables way to set the
LD_HWCAP_MASK, i.e. via the glibc.tune.hwcap_mask tunable. In a
follow-up patch, the _dl_hwcap_mask will be replaced with
glibc.tune.hwcap_mask to complete the transition.
* elf/dl-tunables.list: Add glibc.tune.hwcap_mask.
* scripts/gen-tunables.awk: Include dl-procinfo.h.
* manual/tunables.texi: Document glibc.tune.hwcap_mask.
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-tunables.list | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/elf/dl-tunables.list b/elf/dl-tunables.list index b9f1488798..41ce9afa28 100644 --- a/elf/dl-tunables.list +++ b/elf/dl-tunables.list @@ -77,4 +77,11 @@ glibc { security_level: SXID_IGNORE } } + tune { + hwcap_mask { + type: UINT_64 + env_alias: LD_HWCAP_MASK + default: HWCAP_IMPORTANT + } + } } |