[PATCH 5/14] cpumask: use modern cpumask style in drivers/..

cpumask_t -> struct cpumask, and don't put one on the stack. (Note: this
is actually on the stack unless CONFIG_CPUMASK_OFFSTACK=y).

Signed-off-by: Rusty Russell <rusty.TakeThisOut@rustcorp.com.au>
---
drivers/edac/amd64_edac.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2625,7 +2625,7 @@ static int amd64_init_csrows(struct mem_
static void amd64_enable_ecc_error_reporting(struct mem_ctl_info *mci)
{
struct amd64_pvt *pvt = mci->pvt_info;
- const cpumask_t *cpumask = cpumask_of_node(pvt->mc_node_id);
+ const struct cpumask *cpumask = cpumask_of_node(pvt->mc_node_id);
int cpu, idx = 0, err = 0;
struct msr msrs[cpumask_weight(cpumask)];
u32 value;
@@ -2701,7 +2701,7 @@ static void amd64_enable_ecc_error_repor

static void amd64_restore_ecc_error_reporting(struct amd64_pvt *pvt)
{
- const cpumask_t *cpumask = cpumask_of_node(pvt->mc_node_id);
+ const struct cpumask *cpumask = cpumask_of_node(pvt->mc_node_id);
int cpu, idx = 0, err = 0;
struct msr msrs[cpumask_weight(cpumask)];
u32 value;
@@ -2734,7 +2734,7 @@ static void amd64_restore_ecc_error_repo
}

/* get all cores on this DCT */
-static void get_cpus_on_this_dct_cpumask(cpumask_t *mask, int nid)
+static void get_cpus_on_this_dct_cpumask(struct cpumask *mask, int nid)
{
int cpu;

@@ -2746,25 +2746,30 @@ static void get_cpus_on_this_dct_cpumask
/* check MCG_CTL on all the cpus on this node */
static bool amd64_nb_mce_bank_enabled_on_node(int nid)
{
- cpumask_t mask;
+ cpumask_var_t mask;
struct msr *msrs;
int cpu, nbe, idx = 0;
bool ret = false;

- cpumask_clear(&mask);
+ if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) {
+ amd64_printk(KERN_WARNING, "%s: error allocating mask\n",
+ __func__);
+ return false;
+ }

- get_cpus_on_this_dct_cpumask(&mask, nid);
+ get_cpus_on_this_dct_cpumask(mask, nid);

- msrs = kzalloc(sizeof(struct msr) * cpumask_weight(&mask), GFP_KERNEL);
+ msrs = kzalloc(sizeof(struct msr) * cpumask_weight(mask), GFP_KERNEL);
if (!msrs) {
amd64_printk(KERN_WARNING, "%s: error allocating msrs\n",
__func__);
+ free_cpumask_var(mask);
return false;
}

- rdmsr_on_cpus(&mask, MSR_IA32_MCG_CTL, msrs);
+ rdmsr_on_cpus(mask, MSR_IA32_MCG_CTL, msrs);

- for_each_cpu(cpu, &mask) {
+ for_each_cpu(cpu, mask) {
nbe = msrs[idx].l & K8_MSR_MCGCTL_NBE;

debugf0("core: %u, MCG_CTL: 0x%llx, NB MSR is %s\n",
@@ -2780,6 +2785,7 @@ static bool amd64_nb_mce_bank_enabled_on

out:
kfree(msrs);
+ free_cpumask_var(mask);
return ret;
}


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Hi,

On Tue, Nov 03, 2009 at 02:56:35PM +1030, Rusty Russell wrote:
> cpumask_t -> struct cpumask, and don't put one on the stack. (Note: this
> is actually on the stack unless CONFIG_CPUMASK_OFFSTACK=y).
>
> Signed-off-by: Rusty Russell <rusty RemoveThis @rustcorp.com.au>

I've got a similar patch already queued up but it
depends on the changes to rdmsr_on_cpus/wrmsr_on_cpus in
b8a4754147d61f5359a765a3afd3eb03012aa052 which is in tip/x86/cpu and
which does a bit more than your patch 4 so IMHO you could drop yours.

Concerning the edac change, yours is better and I could pick it up and
add it to my patch queue if nobody else has a problem with that?

--
Regards/Gruss,
Boris.
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