From: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Date: Tue, 10 Jul 2018 10:44:46 +0000 (+0200)
Subject: eal: fix return codes on thread naming failure
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=82dcc8b4bcb8adcb7fc819839833e74a3d0ad497;p=dpdk.git

eal: fix return codes on thread naming failure

The doc says this function returns negative errno
on error, but it currently returns either -1 or
positive errno.

It was incorrectly assumed that pthread_setname_np()
returns negative error numbers. It always returns
positive ones, so this patch negates its return value
before returning.

Fixes: 3901ed99c2f8 ("eal: fix thread naming on FreeBSD")
Cc: stable@dpdk.org

Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Reviewed-by: Olivier Matz <olivier.matz@6wind.com>
---

diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c
index f652ff9884..b496fc711e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_thread.c
+++ b/lib/librte_eal/linuxapp/eal/eal_thread.c
@@ -176,7 +176,7 @@ int rte_sys_gettid(void)
 
 int rte_thread_setname(pthread_t id, const char *name)
 {
-	int ret = -1;
+	int ret = ENOSYS;
 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
 #if __GLIBC_PREREQ(2, 12)
 	ret = pthread_setname_np(id, name);
@@ -184,5 +184,5 @@ int rte_thread_setname(pthread_t id, const char *name)
 #endif
 	RTE_SET_USED(id);
 	RTE_SET_USED(name);
-	return ret;
+	return -ret;
 }