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-rw-r--r--arch/ppc64/kernel/iSeries_setup.c22
-rw-r--r--arch/ppc64/kernel/setup.c56
-rw-r--r--arch/ppc64/kernel/smp.c3
3 files changed, 24 insertions, 57 deletions
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)
852 852
853late_initcall(iSeries_src_init); 853late_initcall(iSeries_src_init);
854 854
855static int set_spread_lpevents(char *str)
856{
857 unsigned long i;
858 unsigned long val = simple_strtoul(str, NULL, 0);
859
860 /*
861 * The parameter is the number of processors to share in processing
862 * lp events.
863 */
864 if (( val > 0) && (val <= NR_CPUS)) {
865 for (i = 1; i < val; ++i)
866 paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
867
868 printk("lpevent processing spread over %ld processors\n", val);
869 } else {
870 printk("invalid spread_lpevents %ld\n", val);
871 }
872
873 return 1;
874}
875__setup("spread_lpevents=", set_spread_lpevents);
876
855void __init iSeries_early_setup(void) 877void __init iSeries_early_setup(void)
856{ 878{
857 iSeries_fixup_klimit(); 879 iSeries_fixup_klimit();
diff --git a/arch/ppc64/kernel/setup.c b/arch/ppc64/kernel/setup.c
index 21c57f539c2..dce198d3932 100644
--- a/arch/ppc64/kernel/setup.c
+++ b/arch/ppc64/kernel/setup.c
@@ -103,11 +103,6 @@ extern void unflatten_device_tree(void);
103 103
104extern void smp_release_cpus(void); 104extern void smp_release_cpus(void);
105 105
106unsigned long decr_overclock = 1;
107unsigned long decr_overclock_proc0 = 1;
108unsigned long decr_overclock_set = 0;
109unsigned long decr_overclock_proc0_set = 0;
110
111int have_of = 1; 106int have_of = 1;
112int boot_cpuid = 0; 107int boot_cpuid = 0;
113int boot_cpuid_phys = 0; 108int boot_cpuid_phys = 0;
@@ -1120,64 +1115,15 @@ void ppc64_dump_msg(unsigned int src, const char *msg)
1120 printk("[dump]%04x %s\n", src, msg); 1115 printk("[dump]%04x %s\n", src, msg);
1121} 1116}
1122 1117
1123int set_spread_lpevents( char * str )
1124{
1125 /* The parameter is the number of processors to share in processing lp events */
1126 unsigned long i;
1127 unsigned long val = simple_strtoul( str, NULL, 0 );
1128 if ( ( val > 0 ) && ( val <= NR_CPUS ) ) {
1129 for ( i=1; i<val; ++i )
1130 paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
1131 printk("lpevent processing spread over %ld processors\n", val);
1132 }
1133 else
1134 printk("invalid spreaqd_lpevents %ld\n", val);
1135 return 1;
1136}
1137
1138/* This should only be called on processor 0 during calibrate decr */ 1118/* This should only be called on processor 0 during calibrate decr */
1139void setup_default_decr(void) 1119void setup_default_decr(void)
1140{ 1120{
1141 struct paca_struct *lpaca = get_paca(); 1121 struct paca_struct *lpaca = get_paca();
1142 1122
1143 if ( decr_overclock_set && !decr_overclock_proc0_set ) 1123 lpaca->default_decr = tb_ticks_per_jiffy;
1144 decr_overclock_proc0 = decr_overclock;
1145
1146 lpaca->default_decr = tb_ticks_per_jiffy / decr_overclock_proc0;
1147 lpaca->next_jiffy_update_tb = get_tb() + tb_ticks_per_jiffy; 1124 lpaca->next_jiffy_update_tb = get_tb() + tb_ticks_per_jiffy;
1148} 1125}
1149 1126
1150int set_decr_overclock_proc0( char * str )
1151{
1152 unsigned long val = simple_strtoul( str, NULL, 0 );
1153 if ( ( val >= 1 ) && ( val <= 48 ) ) {
1154 decr_overclock_proc0_set = 1;
1155 decr_overclock_proc0 = val;
1156 printk("proc 0 decrementer overclock factor of %ld\n", val);
1157 }
1158 else
1159 printk("invalid proc 0 decrementer overclock factor of %ld\n", val);
1160 return 1;
1161}
1162
1163int set_decr_overclock( char * str )
1164{
1165 unsigned long val = simple_strtoul( str, NULL, 0 );
1166 if ( ( val >= 1 ) && ( val <= 48 ) ) {
1167 decr_overclock_set = 1;
1168 decr_overclock = val;
1169 printk("decrementer overclock factor of %ld\n", val);
1170 }
1171 else
1172 printk("invalid decrementer overclock factor of %ld\n", val);
1173 return 1;
1174
1175}
1176
1177__setup("spread_lpevents=", set_spread_lpevents );
1178__setup("decr_overclock_proc0=", set_decr_overclock_proc0 );
1179__setup("decr_overclock=", set_decr_overclock );
1180
1181#ifndef CONFIG_PPC_ISERIES 1127#ifndef CONFIG_PPC_ISERIES
1182/* 1128/*
1183 * This function can be used by platforms to "find" legacy serial ports. 1129 * This function can be used by platforms to "find" legacy serial ports.
diff --git a/arch/ppc64/kernel/smp.c b/arch/ppc64/kernel/smp.c
index 3b906cd9403..9ef5d36d6b2 100644
--- a/arch/ppc64/kernel/smp.c
+++ b/arch/ppc64/kernel/smp.c
@@ -334,7 +334,6 @@ void smp_call_function_interrupt(void)
334 } 334 }
335} 335}
336 336
337extern unsigned long decr_overclock;
338extern struct gettimeofday_struct do_gtod; 337extern struct gettimeofday_struct do_gtod;
339 338
340struct thread_info *current_set[NR_CPUS]; 339struct thread_info *current_set[NR_CPUS];
@@ -491,7 +490,7 @@ int __devinit __cpu_up(unsigned int cpu)
491 if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu)) 490 if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
492 return -EINVAL; 491 return -EINVAL;
493 492
494 paca[cpu].default_decr = tb_ticks_per_jiffy / decr_overclock; 493 paca[cpu].default_decr = tb_ticks_per_jiffy;
495 494
496 if (!cpu_has_feature(CPU_FTR_SLB)) { 495 if (!cpu_has_feature(CPU_FTR_SLB)) {
497 void *tmp; 496 void *tmp;