[PATCH v2] ARC: Adjust cpuinfo for non-continuous cpu ids
Noam Camus
noamca at mellanox.com
Wed Oct 19 04:25:03 PDT 2016
From: Noam Camus <noamc at ezchip.com>
num_possible_cpus() returns how many CPUs may be present on system.
However we want the highest possible CPU number.
This may be differ in a sparsed possible CPUs map.
Such map achived by OF for plat-eznps.
For example if we have:
possible cpus mask 0,3
Then:
num_possible_cpus() is equal 2
while
nr_cpu_ids is equal 4.
Only for value 4 c_start() will provide correct cpuinfo at procfs.
Signed-off-by: Noam Camus <noamc at ezchip.com>
---
arch/arc/kernel/setup.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 64907de..bd2e3a4 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -512,7 +512,7 @@ static void *c_start(struct seq_file *m, loff_t *pos)
* way to pass it w/o having to kmalloc/free a 2 byte string.
* Encode cpu-id as 0xFFcccc, which is decoded by show routine.
*/
- return *pos < num_possible_cpus() ? cpu_to_ptr(*pos) : NULL;
+ return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
--
1.7.1
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