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[PATCH v7 0/4] glibc tunables


Hi,

Here's v7 of the tunables patchset. Changes are as follows:

 - Fixed up issues that Florian pointed out
 - Replaced mmap call with an INTERNAL_SYSCALL to avoid setting errno
 - Dropped the call to __getpagesize since the kernel is capable of
   rounding requests to nearest page size

I tried to avoid the copying of the tunables string, but it complicated the
tunables interface by introducing a length attribute for strings so I dropped
that idea.

Tested on x86_64.

Siddhesh Poyarekar (4):
  Add framework for tunables
  Initialize tunable list with the GLIBC_TUNABLES environment variable
  Enhance --enable-tunables to select tunables frontend at build time
  User manual documentation for tunables

 INSTALL                                    |  18 ++
 Makeconfig                                 |  16 +
 README.tunables                            |  85 ++++++
 config.h.in                                |   3 +
 config.make.in                             |   2 +
 configure                                  |  17 ++
 configure.ac                               |  10 +
 csu/init-first.c                           |   2 -
 csu/libc-start.c                           |   8 +
 elf/Makefile                               |  13 +
 elf/Versions                               |   3 +
 elf/dl-support.c                           |   2 +
 elf/dl-sysdep.c                            |   4 +
 elf/dl-tunable-types.h                     |  46 +++
 elf/dl-tunables.c                          | 457 +++++++++++++++++++++++++++++
 elf/dl-tunables.h                          |  92 ++++++
 elf/dl-tunables.list                       |  69 +++++
 elf/rtld.c                                 |   2 +
 malloc/Makefile                            |   6 +
 malloc/arena.c                             |  54 ++++
 malloc/tst-malloc-usable-static-tunables.c |   1 +
 malloc/tst-malloc-usable-static.c          |   1 +
 malloc/tst-malloc-usable-tunables.c        |   1 +
 manual/Makefile                            |   3 +-
 manual/install.texi                        |  21 ++
 manual/probes.texi                         |   2 +-
 manual/tunables.texi                       | 185 ++++++++++++
 scripts/gen-tunables.awk                   | 157 ++++++++++
 sysdeps/mach/hurd/dl-sysdep.c              |   4 +
 29 files changed, 1280 insertions(+), 4 deletions(-)
 create mode 100644 README.tunables
 create mode 100644 elf/dl-tunable-types.h
 create mode 100644 elf/dl-tunables.c
 create mode 100644 elf/dl-tunables.h
 create mode 100644 elf/dl-tunables.list
 create mode 100644 malloc/tst-malloc-usable-static-tunables.c
 create mode 100644 malloc/tst-malloc-usable-static.c
 create mode 100644 malloc/tst-malloc-usable-tunables.c
 create mode 100644 manual/tunables.texi
 create mode 100644 scripts/gen-tunables.awk

-- 
2.7.4


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