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authorMichael Holzheu <holzheu@de.ibm.com>2005-06-25 14:55:33 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:37 -0700
commit66a464dbc8e0345b6f972b92bf1118e043d7c987 (patch)
tree4c8f83ce6b1879556025fe77b97629a8380aa4dd /drivers/s390/cio
parent6b979de395c7e1b7e59f74a870e1d1911853eccb (diff)
[PATCH] s390: debug feature changes
This patch changes the memory allocation method for the s390 debug feature. Trace buffers had been allocated using the get_free_pages() function before. Therefore it was not possible to get big memory areas in a running system due to memory fragmentation. Now the trace buffers are subdivided into several subbuffers with pagesize. Therefore it is now possible to allocate more memory for the trace buffers and more trace records can be written. In addition to that, dynamic specification of the size of the trace buffers is implemented. It is now possible to change the size of a trace buffer using a new debugfs file instance. When writing a number into this file, the trace buffer size is changed to 'number * pagesize'. In the past all the traces could be obtained from userspace by accessing files in the "proc" filesystem. Now with debugfs we have a new filesystem which should be used for debugging purposes. This patch moves the debug feature from procfs to debugfs. Since the interface of debug_register() changed, all device drivers, which use the debug feature had to be adjusted. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/cio.c8
-rw-r--r--drivers/s390/cio/qdio.c14
-rw-r--r--drivers/s390/cio/qdio.h16
3 files changed, 19 insertions, 19 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 1d9b3f18d8d..ea813bdce1d 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -1,7 +1,7 @@
/*
* drivers/s390/cio/cio.c
* S/390 common I/O routines -- low level i/o calls
- * $Revision: 1.133 $
+ * $Revision: 1.134 $
*
* Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH,
* IBM Corporation
@@ -63,17 +63,17 @@ __setup ("cio_msg=", cio_setup);
static int __init
cio_debug_init (void)
{
- cio_debug_msg_id = debug_register ("cio_msg", 4, 4, 16*sizeof (long));
+ cio_debug_msg_id = debug_register ("cio_msg", 16, 4, 16*sizeof (long));
if (!cio_debug_msg_id)
goto out_unregister;
debug_register_view (cio_debug_msg_id, &debug_sprintf_view);
debug_set_level (cio_debug_msg_id, 2);
- cio_debug_trace_id = debug_register ("cio_trace", 4, 4, 8);
+ cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 8);
if (!cio_debug_trace_id)
goto out_unregister;
debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
debug_set_level (cio_debug_trace_id, 2);
- cio_debug_crw_id = debug_register ("cio_crw", 2, 4, 16*sizeof (long));
+ cio_debug_crw_id = debug_register ("cio_crw", 4, 4, 16*sizeof (long));
if (!cio_debug_crw_id)
goto out_unregister;
debug_register_view (cio_debug_crw_id, &debug_sprintf_view);
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index bbe9f45d143..82194c4eadf 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -56,7 +56,7 @@
#include "ioasm.h"
#include "chsc.h"
-#define VERSION_QDIO_C "$Revision: 1.98 $"
+#define VERSION_QDIO_C "$Revision: 1.101 $"
/****************** MODULE PARAMETER VARIABLES ********************/
MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
@@ -3342,7 +3342,7 @@ static int
qdio_register_dbf_views(void)
{
qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
- QDIO_DBF_SETUP_INDEX,
+ QDIO_DBF_SETUP_PAGES,
QDIO_DBF_SETUP_NR_AREAS,
QDIO_DBF_SETUP_LEN);
if (!qdio_dbf_setup)
@@ -3351,7 +3351,7 @@ qdio_register_dbf_views(void)
debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
- QDIO_DBF_SBAL_INDEX,
+ QDIO_DBF_SBAL_PAGES,
QDIO_DBF_SBAL_NR_AREAS,
QDIO_DBF_SBAL_LEN);
if (!qdio_dbf_sbal)
@@ -3361,7 +3361,7 @@ qdio_register_dbf_views(void)
debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
- QDIO_DBF_SENSE_INDEX,
+ QDIO_DBF_SENSE_PAGES,
QDIO_DBF_SENSE_NR_AREAS,
QDIO_DBF_SENSE_LEN);
if (!qdio_dbf_sense)
@@ -3371,7 +3371,7 @@ qdio_register_dbf_views(void)
debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
- QDIO_DBF_TRACE_INDEX,
+ QDIO_DBF_TRACE_PAGES,
QDIO_DBF_TRACE_NR_AREAS,
QDIO_DBF_TRACE_LEN);
if (!qdio_dbf_trace)
@@ -3382,7 +3382,7 @@ qdio_register_dbf_views(void)
#ifdef CONFIG_QDIO_DEBUG
qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
- QDIO_DBF_SLSB_OUT_INDEX,
+ QDIO_DBF_SLSB_OUT_PAGES,
QDIO_DBF_SLSB_OUT_NR_AREAS,
QDIO_DBF_SLSB_OUT_LEN);
if (!qdio_dbf_slsb_out)
@@ -3391,7 +3391,7 @@ qdio_register_dbf_views(void)
debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
- QDIO_DBF_SLSB_IN_INDEX,
+ QDIO_DBF_SLSB_IN_PAGES,
QDIO_DBF_SLSB_IN_NR_AREAS,
QDIO_DBF_SLSB_IN_LEN);
if (!qdio_dbf_slsb_in)
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index b6daadac4e8..6b8aa6a852b 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -3,7 +3,7 @@
#include <asm/page.h>
-#define VERSION_CIO_QDIO_H "$Revision: 1.32 $"
+#define VERSION_CIO_QDIO_H "$Revision: 1.33 $"
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_VERBOSE_LEVEL 9
@@ -132,7 +132,7 @@ enum qdio_irq_states {
#define QDIO_DBF_SETUP_NAME "qdio_setup"
#define QDIO_DBF_SETUP_LEN 8
-#define QDIO_DBF_SETUP_INDEX 2
+#define QDIO_DBF_SETUP_PAGES 4
#define QDIO_DBF_SETUP_NR_AREAS 1
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SETUP_LEVEL 6
@@ -142,7 +142,7 @@ enum qdio_irq_states {
#define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */
#define QDIO_DBF_SBAL_LEN 256
-#define QDIO_DBF_SBAL_INDEX 2
+#define QDIO_DBF_SBAL_PAGES 4
#define QDIO_DBF_SBAL_NR_AREAS 2
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SBAL_LEVEL 6
@@ -154,16 +154,16 @@ enum qdio_irq_states {
#define QDIO_DBF_TRACE_LEN 8
#define QDIO_DBF_TRACE_NR_AREAS 2
#ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_TRACE_INDEX 4
+#define QDIO_DBF_TRACE_PAGES 16
#define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */
#else /* CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_TRACE_INDEX 2
+#define QDIO_DBF_TRACE_PAGES 4
#define QDIO_DBF_TRACE_LEVEL 2
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SENSE_NAME "qdio_sense"
#define QDIO_DBF_SENSE_LEN 64
-#define QDIO_DBF_SENSE_INDEX 1
+#define QDIO_DBF_SENSE_PAGES 2
#define QDIO_DBF_SENSE_NR_AREAS 1
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SENSE_LEVEL 6
@@ -176,13 +176,13 @@ enum qdio_irq_states {
#define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out"
#define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q
-#define QDIO_DBF_SLSB_OUT_INDEX 8
+#define QDIO_DBF_SLSB_OUT_PAGES 256
#define QDIO_DBF_SLSB_OUT_NR_AREAS 1
#define QDIO_DBF_SLSB_OUT_LEVEL 6
#define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in"
#define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q
-#define QDIO_DBF_SLSB_IN_INDEX 8
+#define QDIO_DBF_SLSB_IN_PAGES 256
#define QDIO_DBF_SLSB_IN_NR_AREAS 1
#define QDIO_DBF_SLSB_IN_LEVEL 6
#endif /* CONFIG_QDIO_DEBUG */