linux-kernel - [tip:x86/urgent] x86/UV2: Remove stale no-resources test for UV2 BAU

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Message-ID: <tip-478c6e529e7bd7c6ef8994c55bd252c287c35893@git.kernel.org>
Date:	Tue, 17 Jan 2012 09:22:33 -0800
From:	tip-bot for Cliff Wickman <cpw@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	cpw@....com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:x86/urgent] x86/UV2:
  Remove stale no-resources test for UV2 BAU

Commit-ID:  478c6e529e7bd7c6ef8994c55bd252c287c35893
Gitweb:     http://git.kernel.org/tip/478c6e529e7bd7c6ef8994c55bd252c287c35893
Author:     Cliff Wickman <cpw@....com>
AuthorDate: Mon, 16 Jan 2012 15:20:50 -0600
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 17 Jan 2012 09:09:56 +0100

x86/UV2: Remove stale no-resources test for UV2 BAU

This patch removes an unnecessary test for a
no-destination-resources-available condition that looks like a
destination timeout in UV1, but is separately distinguishable in
UV2.

Signed-off-by: Cliff Wickman <cpw@....com>
Link: http://lkml.kernel.org/r/20120116212050.GD5767@sgi.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/platform/uv/tlb_uv.c |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 9010ca7..affea50 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -642,16 +642,6 @@ static int uv2_wait_completion(struct bau_desc *bau_desc,
 		} else if (descriptor_stat == UV2H_DESC_DEST_TIMEOUT) {
 			stat->s_dtimeout++;
 			ttm = get_cycles();
-			/*
-			 * Our retries may be blocked by all destination
-			 * swack resources being consumed, and a timeout
-			 * pending.  In that case hardware returns the
-			 * ERROR that looks like a destination timeout.
-			 */
-			if (cycles_2_us(ttm - bcp->send_message) < timeout_us) {
-				bcp->conseccompletes = 0;
-				return FLUSH_RETRY_PLUGGED;
-			}
 			bcp->conseccompletes = 0;
 			return FLUSH_RETRY_TIMEOUT;
 		} else {
--
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