- release 6

[packages/glibc.git] / glibc-git.patch

commit 6e502e19455c6110dd4487d91b7b7d6d8121f9ba
Author: Ulrich Drepper <drepper@gmail.com>
Date:   Wed Jun 22 08:32:55 2011 -0400

    Clean up after kernel sigcontext header mess

diff --git a/sysdeps/unix/sysv/linux/bits/sigcontext.h b/sysdeps/unix/sysv/linux/bits/sigcontext.h
index 67dcf94..0f5b607 100644
--- a/sysdeps/unix/sysv/linux/bits/sigcontext.h
+++ b/sysdeps/unix/sysv/linux/bits/sigcontext.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -26,4 +26,8 @@
 # define sigcontext_struct sigcontext
 
 # include <asm/sigcontext.h>
+
+/* The Linux kernel headers redefine NULL wrongly, so cleanup afterwards.  */
+# define __need_NULL
+# include <stddef.h>
 #endif
commit 852eb34d5c56bc75bdd82327fcf310d98655f6b0
Author: Ulrich Drepper <drepper@gmail.com>
Date:   Wed Jun 22 09:50:39 2011 -0400

    Rate limit expensive _SC_NPROCESSORS_ONLN computation

diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index af454b6..a13b6e3 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -1,5 +1,5 @@
 /* Determine various system internal values, Linux version.
-   Copyright (C) 1996-2003,2006,2007,2009,2010 Free Software Foundation, Inc.
+   Copyright (C) 1996-2003,2006,2007,2009,2010,2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -35,6 +35,16 @@
 
 #include <atomic.h>
 #include <not-cancel.h>
+#include <kernel-features.h>
+
+#ifndef HAVE_CLOCK_GETTIME_VSYSCALL
+# undef INTERNAL_VSYSCALL
+# define INTERNAL_VSYSCALL INTERNAL_SYSCALL
+# undef INLINE_VSYSCALL
+# define INLINE_VSYSCALL INLINE_SYSCALL
+#else
+# include <bits/libc-vdso.h>
+#endif
 
 
 /* How we can determine the number of available processors depends on
@@ -128,6 +138,22 @@ next_line (int fd, char *const buffer, char **cp, char **re,
 int
 __get_nprocs ()
 {
+  static int cached_result;
+  static time_t timestamp;
+
+#ifdef __ASSUME_POSIX_TIMERS
+  struct timespec ts;
+  INTERNAL_SYSCALL_DECL (err);
+  INTERNAL_VSYSCALL (clock_gettime, err, 2, CLOCK_REALTIME, &ts);
+#else
+  struct timeval ts;
+  gettimeofday (&ts, NULL);
+#endif
+  time_t prev = timestamp;
+  atomic_read_barrier ();
+  if (ts.tv_sec == prev)
+    return cached_result;
+
   /* XXX Here will come a test for the new system call.  */
 
   const size_t buffer_size = __libc_use_alloca (8192) ? 8192 : 512;
@@ -169,6 +195,10 @@ __get_nprocs ()
 	}
     }
 
+  cached_result = result;
+  atomic_write_barrier ();
+  timestamp = ts.tv_sec;
+
   return result;
 }
 weak_alias (__get_nprocs, get_nprocs)
commit 84e2a551a72c79b020694bb327e33b6d71b09b63
Author: Ulrich Drepper <drepper@gmail.com>
Date:   Wed Jun 22 10:32:07 2011 -0400

    Use a /sys/devices/system/cpu/online for _SC_NPROCESSORS_ONLN implementation

diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index a13b6e3..b74774f 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -161,20 +161,65 @@ __get_nprocs ()
   char *buffer_end = buffer + buffer_size;
   char *cp = buffer_end;
   char *re = buffer_end;
-  int result = 1;
 
 #ifdef O_CLOEXEC
   const int flags = O_RDONLY | O_CLOEXEC;
 #else
   const int flags = O_RDONLY;
 #endif
+  int fd = open_not_cancel_2 ("/sys/devices/system/cpu/online", flags);
+  char *l;
+  int result = 0;
+  if (fd != -1)
+    {
+      l = next_line (fd, buffer, &cp, &re, buffer_end);
+      if (l != NULL)
+	do
+	  {
+	    char *endp;
+	    unsigned long int n = strtoul (l, &endp, 10);
+	    if (l == endp)
+	      {
+		result = 0;
+		break;
+	      }
+
+	    unsigned long int m = n;
+	    if (*endp == '-')
+	      {
+		l = endp + 1;
+		m = strtoul (l, &endp, 10);
+		if (l == endp)
+		  {
+		    result = 0;
+		    break;
+		  }
+	      }
+
+	    result += m - n + 1;
+
+	    l = endp;
+	    while (l < re && isspace (*l))
+	      ++l;
+	  }
+	while (l < re);
+
+      close_not_cancel_no_status (fd);
+
+      if (result > 0)
+	goto out;
+    }
+
+  cp = buffer_end;
+  re = buffer_end;
+  result = 1;
+
   /* The /proc/stat format is more uniform, use it by default.  */
-  int fd = open_not_cancel_2 ("/proc/stat", flags);
+  fd = open_not_cancel_2 ("/proc/stat", flags);
   if (fd != -1)
     {
       result = 0;
 
-      char *l;
       while ((l = next_line (fd, buffer, &cp, &re, buffer_end)) != NULL)
 	/* The current format of /proc/stat has all the cpu* entries
 	   at the front.  We assume here that stays this way.  */
@@ -195,6 +240,7 @@ __get_nprocs ()
 	}
     }
 
+ out:
   cached_result = result;
   atomic_write_barrier ();
   timestamp = ts.tv_sec;
commit 2d4fa81e11abc464b5b1f6417525285e84ff787c
Author: Roland McGrath <roland@hack.frob.com>
Date:   Sat Jun 11 03:41:23 2011 -0700

    Consolidate shlib.lds references in new variables.

diff --git a/Makerules b/Makerules
index 6b4b0e1..d3cb4cc 100644
--- a/Makerules
+++ b/Makerules
@@ -514,8 +514,11 @@ $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 	mv -f $@T $@
 common-generated += shlib.lds
 
+shlib-lds = $(common-objpfx)shlib.lds
+shlib-lds-flags = -T $(shlib-lds)
+
 define build-shlib
-$(build-shlib-helper) -o $@ -T $(common-objpfx)shlib.lds \
+$(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 	  $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 endef
 else
@@ -557,11 +560,11 @@ ifeq (yes,$(elf))
 # binutils only position loadable notes into the first page for binaries,
 # not for shared objects
 define build-module
-$(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
+$(build-module-helper) -o $@ $(shlib-lds-flags) \
 	  $(csu-objpfx)abi-note.o $(build-module-objlist)
 endef
 define build-module-asneeded
-$(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
+$(build-module-helper) -o $@ $(shlib-lds-flags) \
 	  $(csu-objpfx)abi-note.o \
 	  -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed
 endef
@@ -618,7 +621,7 @@ $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 			 $(common-objpfx)libc_pic.os \
 			 $(elfobjdir)/sofini.os \
 			 $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
-			 $(common-objpfx)shlib.lds
+			 $(shlib-lds)
 	$(build-shlib)
 ifeq ($(versioning),yes)
 $(common-objpfx)libc.so: $(common-objpfx)libc.map
@@ -689,7 +692,7 @@ include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
 
 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
-		$(objpfx)%.os $(common-objpfx)shlib.lds \
+		$(objpfx)%.os $(shlib-lds) \
 		$(common-objpfx)libc.so $(common-objpfx)libc_nonshared.a
 	$(build-module)
 endif
diff --git a/iconvdata/extra-module.mk b/iconvdata/extra-module.mk
index 163074f..43f4e12 100644
--- a/iconvdata/extra-module.mk
+++ b/iconvdata/extra-module.mk
@@ -4,7 +4,7 @@ extra-modules-left := $(strip $(filter-out $(mod),$(extra-modules-left)))
 extra-objs := $(extra-objs) $(patsubst %,%.os,$($(mod)-routines))
 
 $(objpfx)$(mod).so: $(addprefix $(objpfx),$(addsuffix .os,$($(mod)-routines)))\
-		    $(common-objpfx)shlib.lds
+		    $(shlib-lds)
 	$(build-module-asneeded)
 
 # Depend on libc.so so a DT_NEEDED is generated in the shared objects.
commit f781ef4015504e8a1da649c266584976238aa079
Author: Roland McGrath <roland@hack.frob.com>
Date:   Sat Jun 11 04:16:49 2011 -0700

    Add --with-default-link configure option.

diff --git a/Makerules b/Makerules
index d3cb4cc..23d9f1c 100644
--- a/Makerules
+++ b/Makerules
@@ -479,6 +479,11 @@ endif
 endif
 
 ifeq (yes,$(elf))
+ifeq (yes,$(use-default-link))
+# If the linker is good enough, we can let it use its default linker script.
+shlib-lds =
+shlib-lds-flags =
+else
 # binutils only position loadable notes into the first page for binaries,
 # not for shared objects
 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
@@ -516,6 +521,7 @@ common-generated += shlib.lds
 
 shlib-lds = $(common-objpfx)shlib.lds
 shlib-lds-flags = -T $(shlib-lds)
+endif
 
 define build-shlib
 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
diff --git a/config.make.in b/config.make.in
index 0656b1b..34842bf 100644
--- a/config.make.in
+++ b/config.make.in
@@ -69,6 +69,7 @@ have-cc-with-libunwind = @libc_cv_cc_with_libunwind@
 fno-unit-at-a-time = @fno_unit_at_a_time@
 bind-now = @bindnow@
 have-hash-style = @libc_cv_hashstyle@
+use-default-link = @use_default_link@
 
 static-libgcc = @libc_cv_gcc_static_libgcc@
 
diff --git a/configure b/configure
index 20e7340..e8ad775 100755
--- a/configure
+++ b/configure
@@ -696,6 +696,7 @@ force_install
 bindnow
 oldest_abi
 enable_check_abi
+use_default_link
 with_cvs
 with_fp
 ac_ct_CXX
@@ -770,6 +771,7 @@ with_selinux
 with_xcoff
 with_cvs
 with_headers
+with_default_link
 enable_sanity_checks
 enable_check_abi
 enable_shared
@@ -1464,6 +1466,7 @@ Optional Packages:
   --without-cvs           if CVS should not be used
   --with-headers=PATH     location of system headers to use (for example
                           /usr/src/linux/include) [default=compiler default]
+  --with-default-link     do not use explicit linker scripts [default=no]
   --with-tls              enable support for TLS
   --without-__thread      do not use TLS features even when supporting them
   --with-cpu=CPU          select code for CPU variant
@@ -3581,6 +3584,16 @@ else
 fi
 
 
+
+
+# Check whether --with-default-link was given.
+if test "${with_default_link+set}" = set; then :
+  withval=$with_default_link; use_default_link=$withval
+else
+  use_default_link=no
+fi
+
+
 # Check whether --enable-sanity-checks was given.
 if test "${enable_sanity_checks+set}" = set; then :
   enableval=$enable_sanity_checks; enable_sanity=$enableval
diff --git a/configure.in b/configure.in
index f2b3921..f34aab3 100644
--- a/configure.in
+++ b/configure.in
@@ -114,6 +114,14 @@ AC_ARG_WITH([headers],
 	    [sysheaders=$withval],
 	    [sysheaders=''])
 
+AC_SUBST(use_default_link)
+AC_ARG_WITH([default-link],
+	    AC_HELP_STRING([--with-default-link],
+			   [do not use explicit linker scripts
+			    @<:@default=no@:>@]),
+	    [use_default_link=$withval],
+	    [use_default_link=no])
+
 AC_ARG_ENABLE([sanity-checks],
 	      AC_HELP_STRING([--disable-sanity-checks],
 			     [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]),
commit 5c55070081c27168d27145afdf6a92cd56c9abb3
Author: Roland McGrath <roland@hack.frob.com>
Date:   Sat Jun 11 00:45:12 2011 -0700

    Use linker --print-output-format option if available.

diff --git a/Makerules b/Makerules
index d70a196..a8b575c 100644
--- a/Makerules
+++ b/Makerules
@@ -990,10 +990,14 @@ install: $(inst_slibdir)/libc.so$(libc.so-version)
 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
 			    $(common-objpfx)config.make \
 			    $(common-objpfx)config.h $(..)Makerules
+ifneq (unknown,$(output-format))
+	echo > $@.new 'OUTPUT_FORMAT($(output-format))'
+else
 	$(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
 		  -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
 	| sed -n -f $< > $@.new
 	rm -f $@.so
+endif
 	mv -f $@.new $@
 common-generated += format.lds
 
diff --git a/config.make.in b/config.make.in
index b73b21e..407ebc1 100644
--- a/config.make.in
+++ b/config.make.in
@@ -70,6 +70,7 @@ fno-unit-at-a-time = @fno_unit_at_a_time@
 bind-now = @bindnow@
 have-hash-style = @libc_cv_hashstyle@
 use-default-link = @use_default_link@
+output-format = @libc_cv_output_format@
 
 static-libgcc = @libc_cv_gcc_static_libgcc@
 
diff --git a/configure b/configure
index 2568345..55a4b30 100755
--- a/configure
+++ b/configure
@@ -647,6 +647,7 @@ libc_cv_have_initfini
 gnu89_inline
 libc_cv_ssp
 fno_unit_at_a_time
+libc_cv_output_format
 libc_cv_hashstyle
 libc_cv_fpie
 libc_cv_z_execstack
@@ -6703,6 +6704,24 @@ $as_echo "$libc_cv_hashstyle" >&6; }
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker output format" >&5
+$as_echo_n "checking linker output format... " >&6; }
+if ${libc_cv_output_format+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if libc_cv_output_format=`
+${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&5`
+then
+  :
+else
+  libc_cv_output_format=
+fi
+test -n "$libc_cv_output_format" || libc_cv_output_format=unknown
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_output_format" >&5
+$as_echo "$libc_cv_output_format" >&6; }
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fno-toplevel-reorder -fno-section-anchors" >&5
 $as_echo_n "checking for -fno-toplevel-reorder -fno-section-anchors... " >&6; }
 if ${libc_cv_fno_toplevel_reorder+:} false; then :
diff --git a/configure.in b/configure.in
index 55e5649..a28cd70 100644
--- a/configure.in
+++ b/configure.in
@@ -1803,6 +1803,17 @@ EOF
   AC_SUBST(libc_cv_hashstyle)
 fi
 
+AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl
+if libc_cv_output_format=`
+${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD`
+then
+  :
+else
+  libc_cv_output_format=
+fi
+test -n "$libc_cv_output_format" || libc_cv_output_format=unknown])
+AC_SUBST(libc_cv_output_format)
+
 AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl
 cat > conftest.c <<EOF
 int foo;