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authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-03-13 10:27:13 -0300
committerAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-03-13 10:27:13 -0300
commit8ab0cd46c49fead7021400426380229b69ca5ed1 (patch)
tree3200ba6d2d78413d3a555696e39ead9c489dfb94
parent0de52d934560c373daae66f1ac36ed4a264b509d (diff)
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PowerPC: Change sched_getcpu to use vDSO getcpu instead of syscall.
Backport of d5e0b9bd6e296f3ec5263fa296d39f3fed9b8fa2.
-rw-r--r--ChangeLog7
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/Versions1
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h2
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/init-first.c3
4 files changed, 13 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 2a0f90c0ec..6ab2afc257 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-01-09 Anton Blanchard <anton@samba.org>
+
+ * sysdeps/unix/sysv/linux/powerpc/sched_getcpu.c: New file.
+ * sysdeps/unix/sysv/linux/powerpc/Versions: Add __vdso_getcpu.
+ * sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h: Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/init-first.c: Likewise.
+
2012-05-12 Andreas Schwab <schwab@linux-m68k.org>
* sysdeps/powerpc/memmove.c (MEMMOVE): Don't return a value if
diff --git a/sysdeps/unix/sysv/linux/powerpc/Versions b/sysdeps/unix/sysv/linux/powerpc/Versions
index 1ef53b9e9c..396a4236c1 100644
--- a/sysdeps/unix/sysv/linux/powerpc/Versions
+++ b/sysdeps/unix/sysv/linux/powerpc/Versions
@@ -3,5 +3,6 @@ libc {
__vdso_get_tbfreq;
__vdso_clock_gettime;
__vdso_clock_getres;
+ __vdso_getcpu;
}
}
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h
index 746d9ced4a..c3026d573d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h
@@ -31,6 +31,8 @@ extern void *__vdso_clock_getres;
extern void *__vdso_get_tbfreq;
+extern void *__vdso_getcpu;
+
#endif
#endif /* _LIBC_VDSO_H */
diff --git a/sysdeps/unix/sysv/linux/powerpc/init-first.c b/sysdeps/unix/sysv/linux/powerpc/init-first.c
index 92dacc761f..cfed65536e 100644
--- a/sysdeps/unix/sysv/linux/powerpc/init-first.c
+++ b/sysdeps/unix/sysv/linux/powerpc/init-first.c
@@ -27,6 +27,7 @@ void *__vdso_gettimeofday attribute_hidden;
void *__vdso_clock_gettime;
void *__vdso_clock_getres;
void *__vdso_get_tbfreq;
+void *__vdso_getcpu;
static inline void
@@ -41,6 +42,8 @@ _libc_vdso_platform_setup (void)
__vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres", &linux2615);
__vdso_get_tbfreq = _dl_vdso_vsym ("__kernel_vdso_get_tbfreq", &linux2615);
+
+ __vdso_getcpu = _dl_vdso_vsym ("__kernel_getcpu", &linux2615);
}
# define VDSO_SETUP _libc_vdso_platform_setup