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| author | Mahesh Bodapati <bmahi496@linux.ibm.com> | 2023-08-01 07:41:17 -0500 |
|---|---|---|
| committer | Rajalakshmi Srinivasaraghavan <rajis@linux.ibm.com> | 2023-08-01 07:41:17 -0500 |
| commit | 21841f0d562f0e944c4d267a28cc3ebd19c847e9 (patch) | |
| tree | 30b6e0831da1a801e96c91b5c2781312ce2c4624 /sysdeps/powerpc/powerpc64/multiarch | |
| parent | 5c37d2065286d3db7b974266a3002bb5747d2e5d (diff) | |
| download | glibc-21841f0d562f0e944c4d267a28cc3ebd19c847e9.tar.xz glibc-21841f0d562f0e944c4d267a28cc3ebd19c847e9.zip | |
PowerPC: Influence cpu/arch hwcap features via GLIBC_TUNABLES
This patch enables the option to influence hwcaps used by PowerPC.
The environment variable, GLIBC_TUNABLES=glibc.cpu.hwcaps=-xxx,yyy,-zzz....,
can be used to enable CPU/ARCH feature yyy, disable CPU/ARCH feature xxx
and zzz, where the feature name is case-sensitive and has to match the ones
mentioned in the file{sysdeps/powerpc/dl-procinfo.c}.
Note that the hwcap tunables only used in the IFUNC selection.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c index ebe9434052..fc26dd0e17 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c +++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c @@ -17,6 +17,7 @@ <https://www.gnu.org/licenses/>. */ #include <assert.h> +#include <cpu-features.h> #include <string.h> #include <wchar.h> #include <ldsodefs.h> @@ -27,9 +28,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, size_t max) { size_t i = max; - - unsigned long int hwcap = GLRO(dl_hwcap); - unsigned long int hwcap2 = GLRO(dl_hwcap2); + const struct cpu_features *features = &GLRO(dl_powerpc_cpu_features); + unsigned long int hwcap = features->hwcap; + unsigned long int hwcap2 = features->hwcap2; #ifdef SHARED int cacheline_size = GLRO(dl_cache_line_size); #endif |