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authorMichael Hennerich <michael.hennerich@analog.com>2009-07-09 05:58:52 -0400
committerMike Frysinger <vapier@gentoo.org>2009-07-16 01:52:44 -0400
commitc70c754ff916cedd969a73549799d2167ffefcd6 (patch)
treed37d8d710e0094f0eae084b564458fa1d1bee798 /arch/blackfin/kernel
parentc03c2a87347b849ec927d7d2ea79a6955e19f492 (diff)
Blackfin: drop per-cpu loops_per_jiffy tracking
On Blackfin SMP, a per-cpu loops_per_jiffy is pointless since both cores always run at the same CCLK. In addition, the current implementation has flaws since the main consumer for loops_per_jiffy (asm/delay.h) uses the global kernel loops_per_jiffy and not the per_cpu one. So punt all of the per-cpu handling and go back to the global shared one. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/setup.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 98c2f79afda3..6225edae488e 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -168,7 +168,6 @@ void __cpuinit bfin_setup_cpudata(unsigned int cpu)
168 struct blackfin_cpudata *cpudata = &per_cpu(cpu_data, cpu); 168 struct blackfin_cpudata *cpudata = &per_cpu(cpu_data, cpu);
169 169
170 cpudata->idle = current; 170 cpudata->idle = current;
171 cpudata->loops_per_jiffy = loops_per_jiffy;
172 cpudata->imemctl = bfin_read_IMEM_CONTROL(); 171 cpudata->imemctl = bfin_read_IMEM_CONTROL();
173 cpudata->dmemctl = bfin_read_DMEM_CONTROL(); 172 cpudata->dmemctl = bfin_read_DMEM_CONTROL();
174} 173}
@@ -1159,9 +1158,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
1159 sclk/1000000, sclk%1000000); 1158 sclk/1000000, sclk%1000000);
1160 seq_printf(m, "bogomips\t: %lu.%02lu\n" 1159 seq_printf(m, "bogomips\t: %lu.%02lu\n"
1161 "Calibration\t: %lu loops\n", 1160 "Calibration\t: %lu loops\n",
1162 (cpudata->loops_per_jiffy * HZ) / 500000, 1161 (loops_per_jiffy * HZ) / 500000,
1163 ((cpudata->loops_per_jiffy * HZ) / 5000) % 100, 1162 ((loops_per_jiffy * HZ) / 5000) % 100,
1164 (cpudata->loops_per_jiffy * HZ)); 1163 (loops_per_jiffy * HZ));
1165 1164
1166 /* Check Cache configutation */ 1165 /* Check Cache configutation */
1167 switch (cpudata->dmemctl & (1 << DMC0_P | 1 << DMC1_P)) { 1166 switch (cpudata->dmemctl & (1 << DMC0_P | 1 << DMC1_P)) {