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-rw-r--r--arch/s390/oprofile/hwsampler_files.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/arch/s390/oprofile/hwsampler_files.c b/arch/s390/oprofile/hwsampler_files.c
deleted file mode 100644
index 2e1da2449ba..00000000000
--- a/arch/s390/oprofile/hwsampler_files.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/**
- * arch/s390/oprofile/hwsampler_files.c
- *
- * Copyright IBM Corp. 2010
- * Author: Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com)
- */
-#include <linux/oprofile.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-
-#include "../../../drivers/oprofile/oprof.h"
-#include "hwsampler.h"
-
-#define DEFAULT_INTERVAL 4096
-
-#define DEFAULT_SDBT_BLOCKS 1
-#define DEFAULT_SDB_BLOCKS 511
-
-static unsigned long oprofile_hw_interval = DEFAULT_INTERVAL;
-static unsigned long oprofile_min_interval;
-static unsigned long oprofile_max_interval;
-
-static unsigned long oprofile_sdbt_blocks = DEFAULT_SDBT_BLOCKS;
-static unsigned long oprofile_sdb_blocks = DEFAULT_SDB_BLOCKS;
-
-static int hwsampler_file;
-static int hwsampler_running; /* start_mutex must be held to change */
-
-static struct oprofile_operations timer_ops;
-
-static int oprofile_hwsampler_start(void)
-{
- int retval;
-
- hwsampler_running = hwsampler_file;
-
- if (!hwsampler_running)
- return timer_ops.start();
-
- retval = hwsampler_allocate(oprofile_sdbt_blocks, oprofile_sdb_blocks);
- if (retval)
- return retval;
-
- retval = hwsampler_start_all(oprofile_hw_interval);
- if (retval)
- hwsampler_deallocate();
-
- return retval;
-}
-
-static void oprofile_hwsampler_stop(void)
-{
- if (!hwsampler_running) {
- timer_ops.stop();
- return;
- }
-
- hwsampler_stop_all();
- hwsampler_deallocate();
- return;
-}
-
-static ssize_t hwsampler_read(struct file *file, char __user *buf,
- size_t count, loff_t *offset)
-{
- return oprofilefs_ulong_to_user(hwsampler_file, buf, count, offset);
-}
-
-static ssize_t hwsampler_write(struct file *file, char const __user *buf,
- size_t count, loff_t *offset)
-{
- unsigned long val;
- int retval;
-
- if (*offset)
- return -EINVAL;
-
- retval = oprofilefs_ulong_from_user(&val, buf, count);
- if (retval)
- return retval;
-
- if (oprofile_started)
- /*
- * save to do without locking as we set
- * hwsampler_running in start() when start_mutex is
- * held
- */
- return -EBUSY;
-
- hwsampler_file = val;
-
- return count;
-}
-
-static const struct file_operations hwsampler_fops = {
- .read = hwsampler_read,
- .write = hwsampler_write,
-};
-
-static int oprofile_create_hwsampling_files(struct super_block *sb,
- struct dentry *root)
-{
- struct dentry *hw_dir;
-
- /* reinitialize default values */
- hwsampler_file = 1;
-
- hw_dir = oprofilefs_mkdir(sb, root, "hwsampling");
- if (!hw_dir)
- return -EINVAL;
-
- oprofilefs_create_file(sb, hw_dir, "hwsampler", &hwsampler_fops);
- oprofilefs_create_ulong(sb, hw_dir, "hw_interval",
- &oprofile_hw_interval);
- oprofilefs_create_ro_ulong(sb, hw_dir, "hw_min_interval",
- &oprofile_min_interval);
- oprofilefs_create_ro_ulong(sb, hw_dir, "hw_max_interval",
- &oprofile_max_interval);
- oprofilefs_create_ulong(sb, hw_dir, "hw_sdbt_blocks",
- &oprofile_sdbt_blocks);
-
- return 0;
-}
-
-int oprofile_hwsampler_init(struct oprofile_operations* ops)
-{
- if (hwsampler_setup())
- return -ENODEV;
-
- /*
- * create hwsampler files only if hwsampler_setup() succeeds.
- */
- oprofile_min_interval = hwsampler_query_min_interval();
- if (oprofile_min_interval < 0) {
- oprofile_min_interval = 0;
- return -ENODEV;
- }
- oprofile_max_interval = hwsampler_query_max_interval();
- if (oprofile_max_interval < 0) {
- oprofile_max_interval = 0;
- return -ENODEV;
- }
-
- if (oprofile_timer_init(ops))
- return -ENODEV;
-
- printk(KERN_INFO "oprofile: using hardware sampling\n");
-
- memcpy(&timer_ops, ops, sizeof(timer_ops));
-
- ops->start = oprofile_hwsampler_start;
- ops->stop = oprofile_hwsampler_stop;
- ops->create_files = oprofile_create_hwsampling_files;
-
- return 0;
-}
-
-void oprofile_hwsampler_exit(void)
-{
- oprofile_timer_exit();
- hwsampler_shutdown();
-}