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[PATCH] fault-injection: optimize and simplify should_fail()

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Trivial optimization and simplification of should_fail().

Do cheaper disqualification tests first (performance gain not quantified).
Simplify logic; eliminate goto.

Signed-off-by: Don Mullis <[email protected]>
Cc: Akinobu Mita <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Don Mullis 2006-12-08 02:39:53 -08:00 • committed by Linus Torvalds
commit f1729c28a3
1 changed files with 4 additions and 7 deletions
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11
lib/fault-inject.c
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@ -142,9 +142,6 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
if (attr->task_filter && !fail_task(attr, current))
return false;
if (!fail_stacktrace(attr))
return false;
if (atomic_read(&attr->times) == 0)
return false;
@ -159,12 +156,12 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
}
if (attr->probability > random32() % 100)
goto fail;
if (attr->probability <= random32() % 100)
return false;
return false;
if (!fail_stacktrace(attr))
return false;
fail:
fail_dump(attr);
if (atomic_read(&attr->times) != -1)