diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/platforms/pseries/hvCall_inst.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/platforms/pseries/hvCall_inst.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/hvCall_inst.c b/ANDROID_3.4.5/arch/powerpc/platforms/pseries/hvCall_inst.c deleted file mode 100644 index c9311cfd..00000000 --- a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/hvCall_inst.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright (C) 2006 Mike Kravetz IBM Corporation - * - * Hypervisor Call Instrumentation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/kernel.h> -#include <linux/percpu.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/cpumask.h> -#include <asm/hvcall.h> -#include <asm/firmware.h> -#include <asm/cputable.h> -#include <asm/trace.h> - -DEFINE_PER_CPU(struct hcall_stats[HCALL_STAT_ARRAY_SIZE], hcall_stats); - -/* - * Routines for displaying the statistics in debugfs - */ -static void *hc_start(struct seq_file *m, loff_t *pos) -{ - if ((int)*pos < (HCALL_STAT_ARRAY_SIZE-1)) - return (void *)(unsigned long)(*pos + 1); - - return NULL; -} - -static void *hc_next(struct seq_file *m, void *p, loff_t * pos) -{ - ++*pos; - - return hc_start(m, pos); -} - -static void hc_stop(struct seq_file *m, void *p) -{ -} - -static int hc_show(struct seq_file *m, void *p) -{ - unsigned long h_num = (unsigned long)p; - struct hcall_stats *hs = m->private; - - if (hs[h_num].num_calls) { - if (cpu_has_feature(CPU_FTR_PURR)) - seq_printf(m, "%lu %lu %lu %lu\n", h_num<<2, - hs[h_num].num_calls, - hs[h_num].tb_total, - hs[h_num].purr_total); - else - seq_printf(m, "%lu %lu %lu\n", h_num<<2, - hs[h_num].num_calls, - hs[h_num].tb_total); - } - - return 0; -} - -static const struct seq_operations hcall_inst_seq_ops = { - .start = hc_start, - .next = hc_next, - .stop = hc_stop, - .show = hc_show -}; - -static int hcall_inst_seq_open(struct inode *inode, struct file *file) -{ - int rc; - struct seq_file *seq; - - rc = seq_open(file, &hcall_inst_seq_ops); - seq = file->private_data; - seq->private = file->f_path.dentry->d_inode->i_private; - - return rc; -} - -static const struct file_operations hcall_inst_seq_fops = { - .open = hcall_inst_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - -#define HCALL_ROOT_DIR "hcall_inst" -#define CPU_NAME_BUF_SIZE 32 - - -static void probe_hcall_entry(void *ignored, unsigned long opcode, unsigned long *args) -{ - struct hcall_stats *h; - - if (opcode > MAX_HCALL_OPCODE) - return; - - h = &__get_cpu_var(hcall_stats)[opcode / 4]; - h->tb_start = mftb(); - h->purr_start = mfspr(SPRN_PURR); -} - -static void probe_hcall_exit(void *ignored, unsigned long opcode, unsigned long retval, - unsigned long *retbuf) -{ - struct hcall_stats *h; - - if (opcode > MAX_HCALL_OPCODE) - return; - - h = &__get_cpu_var(hcall_stats)[opcode / 4]; - h->num_calls++; - h->tb_total += mftb() - h->tb_start; - h->purr_total += mfspr(SPRN_PURR) - h->purr_start; -} - -static int __init hcall_inst_init(void) -{ - struct dentry *hcall_root; - struct dentry *hcall_file; - char cpu_name_buf[CPU_NAME_BUF_SIZE]; - int cpu; - - if (!firmware_has_feature(FW_FEATURE_LPAR)) - return 0; - - if (register_trace_hcall_entry(probe_hcall_entry, NULL)) - return -EINVAL; - - if (register_trace_hcall_exit(probe_hcall_exit, NULL)) { - unregister_trace_hcall_entry(probe_hcall_entry, NULL); - return -EINVAL; - } - - hcall_root = debugfs_create_dir(HCALL_ROOT_DIR, NULL); - if (!hcall_root) - return -ENOMEM; - - for_each_possible_cpu(cpu) { - snprintf(cpu_name_buf, CPU_NAME_BUF_SIZE, "cpu%d", cpu); - hcall_file = debugfs_create_file(cpu_name_buf, S_IRUGO, - hcall_root, - per_cpu(hcall_stats, cpu), - &hcall_inst_seq_fops); - if (!hcall_file) - return -ENOMEM; - } - - return 0; -} -__initcall(hcall_inst_init); |