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authorCliff Wickman <cpw@sgi.com>2010-06-02 16:22:02 -0500
committerIngo Molnar <mingo@elte.hu>2010-06-08 21:13:47 +0200
commit90cc7d944981a6d06b49bb26fde1b490e28c90e5 (patch)
tree21e2d202c168e8b0ff17907954a7106f018a5f26 /arch/x86/include
parenta8328ee58c15c9d763a67607a35bb987b38950fa (diff)
downloadop-kernel-dev-90cc7d944981a6d06b49bb26fde1b490e28c90e5.zip
op-kernel-dev-90cc7d944981a6d06b49bb26fde1b490e28c90e5.tar.gz
x86, UV: Remove BAU check for stay-busy
Remove a faulty assumption that a long running BAU request has encountered a hardware problem and will never finish. Numalink congestion can make a request appear to have encountered such a problem, but it is not safe to cancel the request. If such a cancel is done but a reply is later received we can miss a TLB shootdown. We depend upon the max_bau_concurrent 'throttle' to prevent the stay-busy case from happening. Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: gregkh@suse.de LKML-Reference: <E1OJvNy-0004ad-BV@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/uv/uv_bau.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h
index 1c8f1e9..c19b870 100644
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -402,7 +402,6 @@ struct bau_control {
unsigned short uvhub_quiesce;
short socket_acknowledge_count[DEST_Q_SIZE];
cycles_t send_message;
- spinlock_t masks_lock;
spinlock_t uvhub_lock;
spinlock_t queue_lock;
/* tunables */
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