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Date: Wed, 9 May 2012 05:58:10 -0700 From: tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org, yinghai@...nel.org, a.p.zijlstra@...llo.nl, tj@...nel.org, tglx@...utronix.de Subject: [tip:sched/core] x86/numa: Allow specifying node_distance() for numa=fake Commit-ID: 94c0dd3278dd3eae52eabf0fb77d472d0dd3e373 Gitweb: http://git.kernel.org/tip/94c0dd3278dd3eae52eabf0fb77d472d0dd3e373 Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> AuthorDate: Wed, 18 Apr 2012 19:04:17 +0200 Committer: Ingo Molnar <mingo@...nel.org> CommitDate: Wed, 9 May 2012 13:28:59 +0200 x86/numa: Allow specifying node_distance() for numa=fake Allows emulating more interesting NUMA configurations like a quad socket AMD Magny-Cour: "numa=fake=8:10,16,16,22,16,22,16,22, 16,10,22,16,22,16,22,16, 16,22,10,16,16,22,16,22, 22,16,16,10,22,16,22,16, 16,22,16,22,10,16,16,22, 22,16,22,16,16,10,22,16, 16,22,16,22,16,22,10,16, 22,16,22,16,22,16,16,10" Which has a non-fully-connected topology. Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: Tejun Heo <tj@...nel.org> Cc: Yinghai Lu <yinghai@...nel.org> Cc: x86@...nel.org Link: http://lkml.kernel.org/n/tip-e1136ef7kdffj7yf9tjhydln@git.kernel.org Signed-off-by: Ingo Molnar <mingo@...nel.org> --- arch/x86/mm/numa_emulation.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c index 53489ff..871dd88 100644 --- a/arch/x86/mm/numa_emulation.c +++ b/arch/x86/mm/numa_emulation.c @@ -339,9 +339,11 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt) } else { unsigned long n; - n = simple_strtoul(emu_cmdline, NULL, 0); + n = simple_strtoul(emu_cmdline, &emu_cmdline, 0); ret = split_nodes_interleave(&ei, &pi, 0, max_addr, n); } + if (*emu_cmdline == ':') + emu_cmdline++; if (ret < 0) goto no_emu; @@ -418,7 +420,9 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt) int physj = emu_nid_to_phys[j]; int dist; - if (physi >= numa_dist_cnt || physj >= numa_dist_cnt) + if (get_option(&emu_cmdline, &dist) == 2) + ; + else if (physi >= numa_dist_cnt || physj >= numa_dist_cnt) dist = physi == physj ? LOCAL_DISTANCE : REMOTE_DISTANCE; else -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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