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* [dpdk-dev]  [PATCH] eal/ppc64: add support for rte pause
@ 2018-10-07  6:18 Jerin Jacob
  2018-10-12  2:24 ` [dpdk-dev] 答复: " Chao Zhu
  2018-10-26 12:41 ` [dpdk-dev] " Thomas Monjalon
  0 siblings, 2 replies; 6+ messages in thread
From: Jerin Jacob @ 2018-10-07  6:18 UTC (permalink / raw)
  To: Chao Zhu; +Cc: dev, thomas, gowrishankar.m, ola.liljedahl, Jerin Jacob

Add support for rte_pause() implementation for ppc64.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---

The reference implementation for Linux's cpu_relax() for ppc64 is at
https://elixir.bootlin.com/linux/latest/source/arch/powerpc/include/asm/processor.h#L440

---
 lib/librte_eal/common/include/arch/ppc_64/rte_pause.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_pause.h b/lib/librte_eal/common/include/arch/ppc_64/rte_pause.h
index 8bd835764..16e47ce22 100644
--- a/lib/librte_eal/common/include/arch/ppc_64/rte_pause.h
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_pause.h
@@ -9,10 +9,17 @@
 extern "C" {
 #endif
 
+#include "rte_atomic.h"
+
 #include "generic/rte_pause.h"
 
 static inline void rte_pause(void)
 {
+	/* Set hardware multi-threading low priority */
+	asm volatile("or 1,1,1");
+	/* Set hardware multi-threading medium priority */
+	asm volatile("or 2,2,2");
+	rte_compiler_barrier();
 }
 
 #ifdef __cplusplus
-- 
2.19.0

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2018-10-26 12:41 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-07  6:18 [dpdk-dev] [PATCH] eal/ppc64: add support for rte pause Jerin Jacob
2018-10-12  2:24 ` [dpdk-dev] 答复: " Chao Zhu
2018-10-12  4:12   ` Jerin Jacob
2018-10-12  6:50     ` Thomas Monjalon
2018-10-26 12:40       ` Thomas Monjalon
2018-10-26 12:41 ` [dpdk-dev] " Thomas Monjalon

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