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| author | Vikas Shivappa <vikas.shivappa@linux.intel.com> | 2017-07-25 14:14:33 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-01 22:41:24 +0200 |
| commit | 0734ded1abee9439b0c5d7b62af1ead78aab895b (patch) | |
| tree | 9ccc5fb632c419ca1deb1bfd05f2d7ca8b2438d5 /arch/x86/kernel | |
| parent | c7d9aac6131148abe29ed1dc6bd73ad1213d1f56 (diff) | |
| download | linux-0734ded1abee9439b0c5d7b62af1ead78aab895b.tar.gz linux-0734ded1abee9439b0c5d7b62af1ead78aab895b.tar.bz2 linux-0734ded1abee9439b0c5d7b62af1ead78aab895b.zip | |
x86/intel_rdt: Change closid type from int to u32
OS associates a CLOSid(Class of service id) to a task by writing the
high 32 bits of per CPU IA32_PQR_ASSOC MSR when a task is scheduled in.
CPUID.(EAX=10H, ECX=1):EDX[15:0] enumerates the max CLOSID supported and
it is zero indexed. Hence change the type to u32 from int.
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: eranian@google.com
Cc: vikas.shivappa@intel.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Cc: reinette.chatre@intel.com
Link: http://lkml.kernel.org/r/1501017287-28083-15-git-send-email-vikas.shivappa@linux.intel.com
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index e8fb08f9ea89..b2a2de360961 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -72,7 +72,7 @@ struct mongroup { struct rdtgroup { struct kernfs_node *kn; struct list_head rdtgroup_list; - int closid; + u32 closid; struct cpumask cpu_mask; int flags; atomic_t waitcount; diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index bee9f885dd20..840405421841 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -77,7 +77,7 @@ static void closid_init(void) static int closid_alloc(void) { - int closid = ffs(closid_free_map); + u32 closid = ffs(closid_free_map); if (closid == 0) return -ENOSPC; |