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Message-Id: <1352387600-19389-1-git-send-email-nzimmer@sgi.com> Date: Thu, 8 Nov 2012 09:13:18 -0600 From: Nathan Zimmer <nzimmer@....com> To: unlisted-recipients:; (no To-header on input) Cc: Nathan Zimmer <nzimmer@....com>, Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk> Subject: [RFC v2 0/2] /proc/sched_stat and /proc/sched_debug fail at 4096 When running with 4096 cores attemping to read /proc/sched_stat and /proc/sched_debug will fail with an ENOMEM condition. On a sufficantly large systems the total amount of data is more then 4mb, so it won't fit into a single buffer. /proc/timer_list also fails in a similar way. However timer_list has two seperate per online cpu loops which will require a bit more thought. Nathan Zimmer (2): procfs: /proc/sched_stat fails on very very large machines. procfs: /proc/sched_debug fails on very very large machines. kernel/sched/debug.c | 73 +++++++++++++++++++++--- kernel/sched/stats.c | 154 ++++++++++++++++++++++++++++++------------------- 2 files changed, 159 insertions(+), 68 deletions(-) CC: Ingo Molnar <mingo@...hat.com> CC: Peter Zijlstra <peterz@...radead.org> CC: linux-kernel@...r.kernel.org CC: Al Viro <viro@...iv.linux.org.uk> -- 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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