From a08f09dbdc69dafea90f8b67655e936cc6d2019a Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 16 Jul 2009 16:49:23 +0930 Subject: [PATCH] Minor optimization: don't make a dependency between two traverse_reads. --- ccan/tdb/tools/replay_trace.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/ccan/tdb/tools/replay_trace.c b/ccan/tdb/tools/replay_trace.c index 8e099f2f..0ca81aaa 100644 --- a/ccan/tdb/tools/replay_trace.c +++ b/ccan/tdb/tools/replay_trace.c @@ -1443,6 +1443,12 @@ static void make_traverse_depends(char *filename[], for (i = 1; i < num_traversals; i++) { const struct op *prev = &op[dep[i-1].file][dep[i-1].op_num]; + const struct op *curr = &op[dep[i].file][dep[i].op_num]; + + /* Read traverses don't depend on each other (read lock). */ + if (prev->op == OP_TDB_TRAVERSE_READ_START + && curr->op == OP_TDB_TRAVERSE_READ_START) + continue; /* Only make dependency if it's clear. */ if (compare_traverse_dep(&dep[i], &dep[i-1])) { -- 2.39.2