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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-03 23:58:10 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-03 23:58:10 +0300 |
commit | 45365a06aa305c9eca1cbf48aef48a7a0cea3b4e (patch) | |
tree | aa3e1cdbe77aab1ac5f16cbaaa8ed9147df82efe /Documentation | |
parent | cdc8fcb49905c0b67e355e027cb462ee168ffaa3 (diff) | |
parent | 9a996c67a65d937b23408e56935ef23404c9418e (diff) | |
download | linux-45365a06aa305c9eca1cbf48aef48a7a0cea3b4e.tar.xz |
Merge tag 's390-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Add support for function error injection.
- Add support for custom exception handlers, as required by
BPF_PROBE_MEM.
- Add support for BPF_PROBE_MEM.
- Add trace events for idle enter / exit for the s390 specific idle
implementation.
- Remove unused zcore memmmap device.
- Remove unused "raw view" from s390 debug feature.
- AP bus + zcrypt device driver code refactoring.
- Provide cex4 cca sysfs attributes for cex3 for zcrypt device driver.
- Expose only minimal interface to walk physmem for mm/memblock. This
is a common code change and it has been agreed on with Mike Rapoport
and Andrew Morton that this can go upstream via the s390 tree.
- Rework of the s390 vmem/vmmemap code to allow for future memory hot
remove.
- Get rid of FORCE_MAX_ZONEORDER to finally allow for order-10
allocations again, instead of only order-8 allocations.
- Various small improvements and fixes.
* tag 's390-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
s390/vmemmap: coding style updates
s390/vmemmap: avoid memset(PAGE_UNUSED) when adding consecutive sections
s390/vmemmap: remember unused sub-pmd ranges
s390/vmemmap: fallback to PTEs if mapping large PMD fails
s390/vmem: cleanup empty page tables
s390/vmemmap: take the vmem_mutex when populating/freeing
s390/vmemmap: cleanup when vmemmap_populate() fails
s390/vmemmap: extend modify_pagetable() to handle vmemmap
s390/vmem: consolidate vmem_add_range() and vmem_remove_range()
s390/vmem: rename vmem_add_mem() to vmem_add_range()
s390: enable HAVE_FUNCTION_ERROR_INJECTION
s390/pci: clarify comment in s390_mmio_read/write
s390/time: improve comparison for tod steering
s390/time: select CLOCKSOURCE_VALIDATE_LAST_CYCLE
s390/time: use CLOCKSOURCE_MASK
s390/bpf: implement BPF_PROBE_MEM
s390/kernel: expand exception table logic to allow new handling options
s390/kernel: unify EX_TABLE* implementations
s390/mm: allow order 10 allocations
s390/mm: avoid trimming to MAX_ORDER
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/s390/s390dbf.rst | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/Documentation/s390/s390dbf.rst b/Documentation/s390/s390dbf.rst index cdb36842b898..af8bdc3629e7 100644 --- a/Documentation/s390/s390dbf.rst +++ b/Documentation/s390/s390dbf.rst @@ -67,7 +67,7 @@ corresponding component. The debugfs normally should be mounted to The content of the directories are files which represent different views to the debug log. Each component can decide which views should be used through registering them with the function :c:func:`debug_register_view()`. -Predefined views for hex/ascii, sprintf and raw binary data are provided. +Predefined views for hex/ascii and sprintf data are provided. It is also possible to define other views. The content of a view can be inspected simply by reading the corresponding debugfs file. @@ -119,8 +119,6 @@ Predefined views: extern struct debug_view debug_hex_ascii_view; - extern struct debug_view debug_raw_view; - extern struct debug_view debug_sprintf_view; Examples @@ -129,7 +127,7 @@ Examples .. code-block:: c /* - * hex_ascii- + raw-view Example + * hex_ascii-view Example */ #include <linux/init.h> @@ -143,7 +141,6 @@ Examples debug_info = debug_register("test", 1, 4, 4 ); debug_register_view(debug_info, &debug_hex_ascii_view); - debug_register_view(debug_info, &debug_raw_view); debug_text_event(debug_info, 4 , "one "); debug_int_exception(debug_info, 4, 4711); @@ -201,7 +198,7 @@ debugfs-files: Example:: > ls /sys/kernel/debug/s390dbf/dasd - flush hex_ascii level pages raw + flush hex_ascii level pages > cat /sys/kernel/debug/s390dbf/dasd/hex_ascii | sort -k2,2 -s 00 00974733272:680099 2 - 02 0006ad7e 07 ea 4a 90 | .... 00 00974733272:682210 2 - 02 0006ade6 46 52 45 45 | FREE @@ -298,10 +295,9 @@ order to see the debug entries well formatted. Predefined Views ---------------- -There are three predefined views: hex_ascii, raw and sprintf. +There are two predefined views: hex_ascii and sprintf. The hex_ascii view shows the data field in hex and ascii representation (e.g. ``45 43 4b 44 | ECKD``). -The raw view returns a bytestream as the debug areas are stored in memory. The sprintf view formats the debug entries in the same way as the sprintf function would do. The sprintf event/exception functions write to the @@ -334,11 +330,6 @@ The format of the hex_ascii and sprintf view is as follows: - Return Address to caller - data field -The format of the raw view is: - -- Header as described in debug.h -- datafield - A typical line of the hex_ascii view will look like the following (first line is only for explanation and will not be displayed when 'cating' the view):: |