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authorNathan Zimmer <nzimmer@sgi.com>2013-02-22 00:15:09 +0100
committerIngo Molnar <mingo@kernel.org>2013-02-22 10:27:25 +0100
commitbbbfeac92beff40eb86c7f682a7f1395f9f0ae52 (patch)
tree80a9f7d32d7a9a7898349c6e6ca88a1a7c1edf13 /sound/isa
parentsched: Fix /proc/sched_stat failure on very very large systems (diff)
downloadlinux-bbbfeac92beff40eb86c7f682a7f1395f9f0ae52.tar.xz
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sched: Fix /proc/sched_debug failure on very very large systems
On systems with 4096 cores attemping to read /proc/sched_debug fails because we are trying to push all the data into a single kmalloc buffer. The issue is on these very large machines all the data will not fit in 4mb. A better solution is to not us the single_open mechanism but to provide our own seq_operations and treat each cpu as an individual record. The output should be identical to the previous version. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Nathan Zimmer <nzimmer@sgi.com> Cc: Peter Zijlstra <peterz@infradead.org>) [ Whitespace fixlet] [ Fix spello in comment] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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