Commit [ed69fc] Maximize Restore History

unwind: move stacktrace capturing and mmap cache invalidating to trace_syscall_entering

Instead of handling stacktrace capturing and mmap cache invalidating in
sys_* functions, handle them uniformly in trace_syscall_entering using
new flags introduced by previous two commits.

The patch is simpler than its older version(v3). The value of
hide_log_until_execve is just ignored. I found the value is nothing
to do with this patch. unwind_cache_invalidate is mentioned only
once in trace_syscall_exiting.
Both are suggested by Dmitry Levin.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

Masatake YAMATO Masatake YAMATO 2014-04-16

Dmitry V. Levin Dmitry V. Levin 2014-05-30

changed mem.c
changed process.c
changed syscall.c
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