forked from Minki/linux
3f1934bc1a
Fix the two section mismatch warnings below. This fixes two real bugs since the code which has __exit annotations may already be gone when it is called. WARNING: vmlinux.o(.init.text+0x1cc4a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_setup_exit() The function __init init_QDIO() references a function __exit qdio_setup_exit(). This is often seen when error handling in the init function uses functionality in the exit path. The fix is often to remove the __exit annotation of qdio_setup_exit() so it may be used outside an exit section. WARNING: vmlinux.o(.init.text+0x1cc7a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_remove_perf_stats() The function __init init_QDIO() references a function __exit qdio_remove_perf_stats(). This is often seen when error handling in the init function uses functionality in the exit path. The fix is often to remove the __exit annotation of qdio_remove_perf_stats() so it may be used outside an exit section. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/*
|
|
* drivers/s390/cio/qdio_perf.c
|
|
*
|
|
* Copyright IBM Corp. 2008
|
|
*
|
|
* Author: Jan Glauber (jang@linux.vnet.ibm.com)
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <asm/ccwdev.h>
|
|
|
|
#include "cio.h"
|
|
#include "css.h"
|
|
#include "device.h"
|
|
#include "ioasm.h"
|
|
#include "chsc.h"
|
|
#include "qdio_debug.h"
|
|
#include "qdio_perf.h"
|
|
|
|
int qdio_performance_stats;
|
|
struct qdio_perf_stats perf_stats;
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
static struct proc_dir_entry *qdio_perf_pde;
|
|
#endif
|
|
|
|
inline void qdio_perf_stat_inc(atomic_long_t *count)
|
|
{
|
|
if (qdio_performance_stats)
|
|
atomic_long_inc(count);
|
|
}
|
|
|
|
inline void qdio_perf_stat_dec(atomic_long_t *count)
|
|
{
|
|
if (qdio_performance_stats)
|
|
atomic_long_dec(count);
|
|
}
|
|
|
|
/*
|
|
* procfs functions
|
|
*/
|
|
static int qdio_perf_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
seq_printf(m, "Number of qdio interrupts\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.qdio_int));
|
|
seq_printf(m, "Number of PCI interrupts\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.pci_int));
|
|
seq_printf(m, "Number of adapter interrupts\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.thin_int));
|
|
seq_printf(m, "\n");
|
|
seq_printf(m, "Inbound tasklet runs\t\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.tasklet_inbound));
|
|
seq_printf(m, "Outbound tasklet runs\t\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.tasklet_outbound));
|
|
seq_printf(m, "Adapter interrupt tasklet runs/loops\t\t: %li/%li\n",
|
|
(long)atomic_long_read(&perf_stats.tasklet_thinint),
|
|
(long)atomic_long_read(&perf_stats.tasklet_thinint_loop));
|
|
seq_printf(m, "Adapter interrupt inbound tasklet runs/loops\t: %li/%li\n",
|
|
(long)atomic_long_read(&perf_stats.thinint_inbound),
|
|
(long)atomic_long_read(&perf_stats.thinint_inbound_loop));
|
|
seq_printf(m, "\n");
|
|
seq_printf(m, "Number of SIGA In issued\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.siga_in));
|
|
seq_printf(m, "Number of SIGA Out issued\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.siga_out));
|
|
seq_printf(m, "Number of SIGA Sync issued\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.siga_sync));
|
|
seq_printf(m, "\n");
|
|
seq_printf(m, "Number of inbound transfers\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.inbound_handler));
|
|
seq_printf(m, "Number of outbound transfers\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.outbound_handler));
|
|
seq_printf(m, "\n");
|
|
seq_printf(m, "Number of fast requeues (outg. SBAL w/o SIGA)\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.fast_requeue));
|
|
seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.debug_tl_out_timer));
|
|
seq_printf(m, "Number of stop polling calls\t\t\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.debug_stop_polling));
|
|
seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n",
|
|
(long)atomic_long_read(&perf_stats.thinint_inbound_loop2));
|
|
seq_printf(m, "\n");
|
|
return 0;
|
|
}
|
|
static int qdio_perf_seq_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, qdio_perf_proc_show, NULL);
|
|
}
|
|
|
|
static struct file_operations qdio_perf_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = qdio_perf_seq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
/*
|
|
* sysfs functions
|
|
*/
|
|
static ssize_t qdio_perf_stats_show(struct bus_type *bus, char *buf)
|
|
{
|
|
return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
|
|
}
|
|
|
|
static ssize_t qdio_perf_stats_store(struct bus_type *bus,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned long i;
|
|
|
|
if (strict_strtoul(buf, 16, &i) != 0)
|
|
return -EINVAL;
|
|
if ((i != 0) && (i != 1))
|
|
return -EINVAL;
|
|
if (i == qdio_performance_stats)
|
|
return count;
|
|
|
|
qdio_performance_stats = i;
|
|
/* reset performance statistics */
|
|
if (i == 0)
|
|
memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
|
|
return count;
|
|
}
|
|
|
|
static BUS_ATTR(qdio_performance_stats, 0644, qdio_perf_stats_show,
|
|
qdio_perf_stats_store);
|
|
|
|
int __init qdio_setup_perf_stats(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
|
|
if (rc)
|
|
return rc;
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
|
|
qdio_perf_pde = proc_create("qdio_perf", S_IFREG | S_IRUGO,
|
|
NULL, &qdio_perf_proc_fops);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
void qdio_remove_perf_stats(void)
|
|
{
|
|
#ifdef CONFIG_PROC_FS
|
|
remove_proc_entry("qdio_perf", NULL);
|
|
#endif
|
|
bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
|
|
}
|