From: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
Date: Tue, 8 May 2018 21:26:00 +0000 (+0530)
Subject: event/octeontx: fix build with clang 6
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=55fbc92d7800100628579643c9ee2770614fef10;p=dpdk.git

event/octeontx: fix build with clang 6

Clang 6 & 7 fail to naturally align packed structs due to this clang
can't use 8byte atomic primitives and splits them into lesser atomic
primitives. To use lesser atomic primitives we need to link libatomic
(-latomic), instead supply alignment attribute to the compiler.

timvf_worker.c:(.text+0x498): undefined reference to `__atomic_fetch_add_8'
timvf_worker.c:(.text+0x525): undefined reference to `__atomic_store_2'
timvf_worker.c:(.text+0x557): undefined reference to `__atomic_fetch_add_4'
timvf_worker.c:(.text+0x5de): undefined reference to `__atomic_store_2'

Fixes: f874c1eb1519 ("event/octeontx: create and free timer adapter")

Reported-by: Andrew Rybchenko <arybchenko@solarflare.com>
Signed-off-by: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---

diff --git a/drivers/event/octeontx/timvf_evdev.h b/drivers/event/octeontx/timvf_evdev.h
index b1b2a8464f..c31e3c0f95 100644
--- a/drivers/event/octeontx/timvf_evdev.h
+++ b/drivers/event/octeontx/timvf_evdev.h
@@ -145,7 +145,7 @@ struct tim_mem_bucket {
 	};
 	uint64_t current_chunk;
 	uint64_t pad;
-} __rte_packed;
+} __rte_packed __rte_aligned(8);
 
 struct tim_mem_entry {
 	uint64_t w0;