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util: New function nullable_xstrdup().

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It's a pretty common pattern so create a function for it.

Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Ben Pfaff
2016-06-24 21:23:16 -07:00
parent 05e81316ca
commit 2225c0b935
16 changed files with 29 additions and 35 deletions
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6
lib/dpif-netdev.c
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@@ -2531,7 +2531,7 @@ dpif_netdev_pmd_set(struct dpif *dpif, const char *cmask)
if (!cmask_equals(dp->requested_pmd_cmask, cmask)) {
free(dp->requested_pmd_cmask);
dp->requested_pmd_cmask = cmask ? xstrdup(cmask) : NULL;
dp->requested_pmd_cmask = nullable_xstrdup(cmask);
}
return 0;
@@ -2690,9 +2690,7 @@ reconfigure_pmd_threads(struct dp_netdev *dp)
/* Reconfigures the cpu mask. */
ovs_numa_set_cpu_mask(dp->requested_pmd_cmask);
free(dp->pmd_cmask);
dp->pmd_cmask = dp->requested_pmd_cmask
? xstrdup(dp->requested_pmd_cmask)
: NULL;
dp->pmd_cmask = nullable_xstrdup(dp->requested_pmd_cmask);
/* Restores the non-pmd. */
dp_netdev_set_nonpmd(dp);