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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 /kernel/mutex.c | |
| parent | x86, UV: Correct BAU discovery of hubs and sockets (diff) | |
| download | linux-dev-90cc7d944981a6d06b49bb26fde1b490e28c90e5.tar.xz linux-dev-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 'kernel/mutex.c')
0 files changed, 0 insertions, 0 deletions