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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-01-10 21:58:09 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 19:12:56 +0100 |
| commit | 2f8975fbcf07103afab0bbaea5f5b1a9967ffb86 (patch) | |
| tree | 4f8931e89e5a5fae2b778ca0e879e2f66ba07935 | |
| parent | f7df8ed164996cd2c6aca9674388be6ef78d8b37 (diff) | |
| download | blackbird-op-linux-2f8975fbcf07103afab0bbaea5f5b1a9967ffb86.tar.gz blackbird-op-linux-2f8975fbcf07103afab0bbaea5f5b1a9967ffb86.zip | |
cpumask: convert drivers/net/sfc
Impact: reduce stack usage, use new cpumask API.
Remove a cpumask from the stack. Ben Hutchings indicated that printing
a warning and returning 1 was acceptable for the corner case where allocation
fails.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: linux-net-drivers@solarflare.com
| -rw-r--r-- | drivers/net/sfc/efx.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index f2e56ceee0ea..101c00a7bb73 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -854,20 +854,27 @@ static void efx_fini_io(struct efx_nic *efx) * interrupts across them. */ static int efx_wanted_rx_queues(void) { - cpumask_t core_mask; + cpumask_var_t core_mask; int count; int cpu; - cpus_clear(core_mask); + if (!alloc_cpumask_var(&core_mask, GFP_KERNEL)) { + printk(KERN_WARNING + "efx.c: allocation failure, irq balancing hobbled\n"); + return 1; + } + + cpumask_clear(core_mask); count = 0; for_each_online_cpu(cpu) { - if (!cpu_isset(cpu, core_mask)) { + if (!cpumask_test_cpu(cpu, core_mask)) { ++count; - cpumask_or(&core_mask, &core_mask, + cpumask_or(core_mask, core_mask, topology_core_cpumask(cpu)); } } + free_cpumask_var(core_mask); return count; } |
