Commit-ID: 0734ded1abee9439b0c5d7b62af1ead78aab895b Gitweb: http://git.kernel.org/tip/0734ded1abee9439b0c5d7b62af1ead78aab895b Author: Vikas Shivappa <vikas.shiva...@linux.intel.com> AuthorDate: Tue, 25 Jul 2017 14:14:33 -0700 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Tue, 1 Aug 2017 22:41:24 +0200
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.shiva...@linux.intel.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Cc: ravi.v.shan...@intel.com Cc: tony.l...@intel.com Cc: fenghua...@intel.com Cc: pet...@infradead.org Cc: eran...@google.com Cc: vikas.shiva...@intel.com Cc: a...@linux.intel.com Cc: davi...@google.com Cc: reinette.cha...@intel.com Link: http://lkml.kernel.org/r/1501017287-28083-15-git-send-email-vikas.shiva...@linux.intel.com --- arch/x86/include/asm/intel_rdt_sched.h | 2 +- arch/x86/kernel/cpu/intel_rdt.h | 2 +- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +- include/linux/sched.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/intel_rdt_sched.h b/arch/x86/include/asm/intel_rdt_sched.h index 4dee77b..1d8d45a 100644 --- a/arch/x86/include/asm/intel_rdt_sched.h +++ b/arch/x86/include/asm/intel_rdt_sched.h @@ -46,7 +46,7 @@ static inline void intel_rdt_sched_in(void) { if (static_branch_likely(&rdt_alloc_enable_key)) { struct intel_pqr_state *state = this_cpu_ptr(&pqr_state); - int closid; + u32 closid; /* * If this task has a closid assigned, use it. diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index e8fb08f..b2a2de3 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 bee9f88..8404054 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; diff --git a/include/linux/sched.h b/include/linux/sched.h index 20b2ff2..8839fd0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -899,7 +899,7 @@ struct task_struct { struct list_head cg_list; #endif #ifdef CONFIG_INTEL_RDT - int closid; + u32 closid; #endif #ifdef CONFIG_FUTEX struct robust_list_head __user *robust_list;
