diff options
Diffstat (limited to 'arch/ia64/kernel/perfmon.c')
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 80 |
1 files changed, 60 insertions, 20 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index aa94f60fa8e7..abc7ad035886 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -147,7 +147,7 @@ * in UP: * - we need to protect against PMU overflow interrupts (local_irq_disable) * - * spin_lock_irqsave()/spin_lock_irqrestore(): + * spin_lock_irqsave()/spin_unlock_irqrestore(): * in SMP: local_irq_disable + spin_lock * in UP : local_irq_disable * @@ -521,19 +521,57 @@ pfm_sysctl_t pfm_sysctl; EXPORT_SYMBOL(pfm_sysctl); static ctl_table pfm_ctl_table[]={ - {1, "debug", &pfm_sysctl.debug, sizeof(int), 0666, NULL, &proc_dointvec, NULL,}, - {2, "debug_ovfl", &pfm_sysctl.debug_ovfl, sizeof(int), 0666, NULL, &proc_dointvec, NULL,}, - {3, "fastctxsw", &pfm_sysctl.fastctxsw, sizeof(int), 0600, NULL, &proc_dointvec, NULL,}, - {4, "expert_mode", &pfm_sysctl.expert_mode, sizeof(int), 0600, NULL, &proc_dointvec, NULL,}, - { 0, }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "debug", + .data = &pfm_sysctl.debug, + .maxlen = sizeof(int), + .mode = 0666, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "debug_ovfl", + .data = &pfm_sysctl.debug_ovfl, + .maxlen = sizeof(int), + .mode = 0666, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "fastctxsw", + .data = &pfm_sysctl.fastctxsw, + .maxlen = sizeof(int), + .mode = 0600, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "expert_mode", + .data = &pfm_sysctl.expert_mode, + .maxlen = sizeof(int), + .mode = 0600, + .proc_handler = &proc_dointvec, + }, + {} }; static ctl_table pfm_sysctl_dir[] = { - {1, "perfmon", NULL, 0, 0755, pfm_ctl_table, }, - {0,}, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "perfmon", + .mode = 0755, + .child = pfm_ctl_table, + }, + {} }; static ctl_table pfm_sysctl_root[] = { - {1, "kernel", NULL, 0, 0755, pfm_sysctl_dir, }, - {0,}, + { + .ctl_name = CTL_KERN, + .procname = "kernel", + .mode = 0755, + .child = pfm_sysctl_dir, + }, + {} }; static struct ctl_table_header *pfm_sysctl_header; @@ -621,7 +659,7 @@ EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info); /* forward declaration */ -static struct file_operations pfm_file_ops; +static const struct file_operations pfm_file_ops; /* * forward declarations @@ -2126,7 +2164,7 @@ pfm_no_open(struct inode *irrelevant, struct file *dontcare) -static struct file_operations pfm_file_ops = { +static const struct file_operations pfm_file_ops = { .llseek = no_llseek, .read = pfm_read, .write = pfm_write, @@ -2261,7 +2299,7 @@ pfm_remap_buffer(struct vm_area_struct *vma, unsigned long buf, unsigned long ad * allocate a sampling buffer and remaps it into the user address space of the task */ static int -pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned long rsize, void **user_vaddr) +pfm_smpl_buffer_alloc(struct task_struct *task, struct file *filp, pfm_context_t *ctx, unsigned long rsize, void **user_vaddr) { struct mm_struct *mm = task->mm; struct vm_area_struct *vma = NULL; @@ -2301,17 +2339,17 @@ pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned lon DPRINT(("smpl_buf @%p\n", smpl_buf)); /* allocate vma */ - vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); if (!vma) { DPRINT(("Cannot allocate vma\n")); goto error_kmem; } - memset(vma, 0, sizeof(*vma)); /* * partially initialize the vma for the sampling buffer */ vma->vm_mm = mm; + vma->vm_file = filp; vma->vm_flags = VM_READ| VM_MAYREAD |VM_RESERVED; vma->vm_page_prot = PAGE_READONLY; /* XXX may need to change */ @@ -2350,6 +2388,8 @@ pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned lon goto error; } + get_file(filp); + /* * now insert the vma in the vm list for the process, must be * done with mmap lock held @@ -2427,7 +2467,7 @@ pfarg_is_sane(struct task_struct *task, pfarg_context_t *pfx) } static int -pfm_setup_buffer_fmt(struct task_struct *task, pfm_context_t *ctx, unsigned int ctx_flags, +pfm_setup_buffer_fmt(struct task_struct *task, struct file *filp, pfm_context_t *ctx, unsigned int ctx_flags, unsigned int cpu, pfarg_context_t *arg) { pfm_buffer_fmt_t *fmt = NULL; @@ -2468,7 +2508,7 @@ pfm_setup_buffer_fmt(struct task_struct *task, pfm_context_t *ctx, unsigned int /* * buffer is always remapped into the caller's address space */ - ret = pfm_smpl_buffer_alloc(current, ctx, size, &uaddr); + ret = pfm_smpl_buffer_alloc(current, filp, ctx, size, &uaddr); if (ret) goto error; /* keep track of user address of buffer */ @@ -2679,7 +2719,7 @@ pfm_context_create(pfm_context_t *ctx, void *arg, int count, struct pt_regs *reg * does the user want to sample? */ if (pfm_uuid_cmp(req->ctx_smpl_buf_id, pfm_null_uuid)) { - ret = pfm_setup_buffer_fmt(current, ctx, ctx_flags, 0, req); + ret = pfm_setup_buffer_fmt(current, filp, ctx, ctx_flags, 0, req); if (ret) goto buffer_error; } @@ -6597,7 +6637,7 @@ found: return 0; } -static struct file_operations pfm_proc_fops = { +static const struct file_operations pfm_proc_fops = { .open = pfm_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -6689,7 +6729,7 @@ pfm_init(void) /* * create /proc/sys/kernel/perfmon (for debugging purposes) */ - pfm_sysctl_header = register_sysctl_table(pfm_sysctl_root, 0); + pfm_sysctl_header = register_sysctl_table(pfm_sysctl_root); /* * initialize all our spinlocks |