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x86/intel_rdt: Making CBM name and type more explicit

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cbm_validate() receives a pointer to the variable that will be initialized
with a validated capacity bitmask. The pointer points to a variable of type
unsigned long that is immediately assigned to a variable of type u32 by the
caller on return from cbm_validate().

Let cbm_validate() initialize a variable of type u32 directly.

At this time also change tha variable name "data" within parse_cbm() to a
name more reflective of the content: "cbm_val". This frees up the generic
"data" to be used later when it is indeed used for a collection of input.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: vikas.shivappa@linux.intel.com
Cc: gavin.hindman@intel.com
Cc: jithu.joseph@intel.com
Cc: dave.hansen@intel.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/5e29cf0209ea2deac9beacd35cbe5239a50959fb.1529706536.git.reinette.chatre@intel.com
This commit is contained in:
Reinette Chatre 2018-06-22 15:42:02 -07:00 committed by Thomas Gleixner
parent 49f7b4efa1
commit 9af4c0a6dc
1 changed files with 5 additions and 4 deletions
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9
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
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@ -87,7 +87,7 @@ int parse_bw(char *buf, struct rdt_resource *r, struct rdt_domain *d)
* are allowed (e.g. FFFFH, 0FF0H, 003CH, etc.).
* Additionally Haswell requires at least two bits set.
*/
static bool cbm_validate(char *buf, unsigned long *data, struct rdt_resource *r)
static bool cbm_validate(char *buf, u32 *data, struct rdt_resource *r)
{
unsigned long first_bit, zero_bit, val;
unsigned int cbm_len = r->cache.cbm_len;
@ -128,16 +128,17 @@ static bool cbm_validate(char *buf, unsigned long *data, struct rdt_resource *r)
*/
int parse_cbm(char *buf, struct rdt_resource *r, struct rdt_domain *d)
{
unsigned long data;
u32 cbm_val;
if (d->have_new_ctrl) {
rdt_last_cmd_printf("duplicate domain %d\n", d->id);
return -EINVAL;
}
if(!cbm_validate(buf, &data, r))
if (!cbm_validate(buf, &cbm_val, r))
return -EINVAL;
d->new_ctrl = data;
d->new_ctrl = cbm_val;
d->have_new_ctrl = true;
return 0;