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authorPeter Zijlstra <peterz@infradead.org>2017-08-10 17:10:26 +0200
committerIngo Molnar <mingo@kernel.org>2017-08-25 11:12:20 +0200
commitbbdacdfed2f5fa50a2cc9f500a36e05990a0837d (patch)
tree0ada5cb03b7133b9a42a456cede81e8e1b7a2ba9 /arch
parent09e0dd8e0f2e197690d34fed8cb4737114d3dd5f (diff)
downloadlinux-bbdacdfed2f5fa50a2cc9f500a36e05990a0837d.tar.gz
sched/debug: Optimize sched_domain sysctl generation
Currently we unconditionally destroy all sysctl bits and regenerate them after we've rebuild the domains (even if that rebuild is a no-op). And since we unconditionally (re)build the sysctl for all possible CPUs, onlining all CPUs gets us O(n^2) time. Instead change this to only rebuild the bits for CPUs we've actually installed new domains on. Reported-by: Ofer Levi(SW) <oferle@mellanox.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions