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authorRich Felker <dalias@aerifal.cx>2012-10-11 22:47:07 -0400
committerRich Felker <dalias@aerifal.cx>2012-10-11 22:47:07 -0400
commit12e9b4faf68a1a02ebf5ad69c03ac10f170f14cb (patch)
treef206db332e670791be0120cb21cc5eee9bc23574 /src/internal/libc.c
parentf2b1f1af83e96f8f98fbf2a5c663d8d058f2a66d (diff)
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i386 vsyscall support (vdso-provided sysenter/syscall instruction based)
this doubles the performance of the fastest syscalls on the atom I
tested it on; improvement is reportedly much more dramatic on
worst-case cpus. cannot be used for cancellable syscalls.
Diffstat (limited to 'src/internal/libc.c')
-rw-r--r--src/internal/libc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/internal/libc.c b/src/internal/libc.c
index 004c1a33..d22d2747 100644
--- a/src/internal/libc.c
+++ b/src/internal/libc.c
@@ -15,3 +15,4 @@ __asm__(".hidden __libc");
 #endif
 
 size_t __hwcap;
+size_t __sysinfo;