From c4eb2a93319d61923635c84a5f5e68965b14c754 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Thu, 2 Jun 2005 14:02:03 -0700 Subject: [PATCH] ppc64: remove decr_overclock Now that we have HZ=1000 there is much less of a need for decr_overclock. Remove it. Leave spread_lpevents but move it into iSeries_setup.c. We should look at making event spreading the default some day. Signed-off-by: Anton Blanchard Acked-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc64/kernel/iSeries_setup.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'arch/ppc64/kernel/iSeries_setup.c') diff --git a/arch/ppc64/kernel/iSeries_setup.c b/arch/ppc64/kernel/iSeries_setup.c index da20120f226..6d06eb550a3 100644 --- a/arch/ppc64/kernel/iSeries_setup.c +++ b/arch/ppc64/kernel/iSeries_setup.c @@ -852,6 +852,28 @@ static int __init iSeries_src_init(void) late_initcall(iSeries_src_init); +static int set_spread_lpevents(char *str) +{ + unsigned long i; + unsigned long val = simple_strtoul(str, NULL, 0); + + /* + * The parameter is the number of processors to share in processing + * lp events. + */ + if (( val > 0) && (val <= NR_CPUS)) { + for (i = 1; i < val; ++i) + paca[i].lpqueue_ptr = paca[0].lpqueue_ptr; + + printk("lpevent processing spread over %ld processors\n", val); + } else { + printk("invalid spread_lpevents %ld\n", val); + } + + return 1; +} +__setup("spread_lpevents=", set_spread_lpevents); + void __init iSeries_early_setup(void) { iSeries_fixup_klimit(); -- cgit v1.2.3