scripts/trace.pl: Optimize event parsing and processing

A couple of small optimizations which altogether bring around 30%
improvement in my testing.

1. Do less string processing on tracepoints names and push more of the
   check into the if-ladder.

2. Pull out common db key and ctx processing and cache common values in
   local vars.

3. Key value pair parsing is faster with a regexp.

4. Avoid sorting the db hash multiple times if possible.

v2:
 * Use faster key-value splitting method. (John Harrison)

v3:
 * Fix floating-point to int time conversion.

v4:
 * Fix refactoring and logic fails. (John Harrison)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: John Harrison <John.C.Harrison@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>

0 files changed, 0 insertions, 0 deletions