Commit 33dc9b12 authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt

ftrace: Separate hash allocation and assignment

When filtering, allocate a hash to insert the function records.
After the filtering is complete, assign it to the ftrace_ops structure.

This allows the ftrace_ops structure to have a much smaller array of
hash buckets instead of wasting a lot of memory.

A read only empty_hash is created to be the minimum size that any ftrace_ops
can point to.

When a new hash is created, it has the following steps:

o Allocate a default hash.
o Walk the function records assigning the filtered records to the hash
o Allocate a new hash with the appropriate size buckets
o Move the entries from the default hash to the new hash.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent f45948e8
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