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| author | Cliff Wickman <cpw@sgi.com> | 2010-06-02 16:22:02 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-06-08 21:13:47 +0200 |
| commit | 90cc7d944981a6d06b49bb26fde1b490e28c90e5 (patch) | |
| tree | 21e2d202c168e8b0ff17907954a7106f018a5f26 /arch/x86/include | |
| parent | a8328ee58c15c9d763a67607a35bb987b38950fa (diff) | |
| download | blackbird-op-linux-90cc7d944981a6d06b49bb26fde1b490e28c90e5.tar.gz blackbird-op-linux-90cc7d944981a6d06b49bb26fde1b490e28c90e5.zip | |
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.h | 1 |
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 1c8f1e9bf74f..c19b870ea58a 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 */ |
