[PATCH resend 0/8] mmap_cache subsystem (re-factoring)

[Masatake YAMATO]

When we added unwinding feature (activated with -k option), we also added
a code for caching the entries of /proc/$pid/maps.

The code for caching was tightly integrated with the code for
unwinding. However, while prototyping kvm vcpu state dump feature to
strace[1], I found the code for caching is useful for other purposes
than unwinding feature.

This patch set makes the code for caching usable independently of
unwinding feature. In the changes, I call the newly separated
code for caching "mmap_cache subsystem".

[1] https://marc.info/?l=kvm&m=151531408406144&w=2

Masatake YAMATO (8):
  unwind: lift up unw_flush_cache from mmap cache management code
  mmap_cache: new subsystem derived from unwind.c
  mmap_cache: Move code for searching an mmap cache from unwind
  mmap_cache: record protection bits
  mmap_cache,unwind: lift up mmap_cache_delete invocation from unwind.c
  mmap_cache: add function to enable mmap_cache
  mmap_cache: record device major and minor numbers
  mmap_cache: add customizable search function

 Makefile.am  |   1 +
 defs.h       |  49 +++++++++++-
 mmap_cache.c | 253 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 strace.c     |   2 +
 syscall.c    |   6 +-
 unwind.c     | 256 ++++++++++-------------------------------------------------
 6 files changed, 350 insertions(+), 217 deletions(-)
 create mode 100644 mmap_cache.c

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2.14.3