Roland McGrath
88ac2921a7
tracehook: add linux/tracehook.h ...
This patch series introduces the "tracehook" interface layer of inlines in
<linux/tracehook.h>. There are more details in the log entry for patch
01/23 and in the header file comments inside that patch. Most of these
changes move code around with little or no change, and they should not
break anything or change any behavior.
This sets a new standard for uniform arch support to enable clean
arch-independent implementations of new debugging and tracing stuff,
denoted by CONFIG_HAVE_ARCH_TRACEHOOK. Patch 20/23 adds that symbol to
arch/Kconfig, with comments listing everything an arch has to do before
setting "select HAVE_ARCH_TRACEHOOK". These are elaborted a bit at:
http://sourceware.org/systemtap/wiki/utrace/arch/HowTo
The new inlines that arch code must define or call have detailed kerneldoc
comments in the generic header files that say what is required.
No arch is obligated to do any work, and no arch's build should be broken
by these changes. There are several steps that each arch should take so
it can set HAVE_ARCH_TRACEHOOK. Most of these are simple. Providing this
support will let new things people add for doing debugging and tracing of
user-level threads "just work" for your arch in the future. For an arch
that does not provide HAVE_ARCH_TRACEHOOK, some new options for such
features will not be available for config.
I have done some arch work and will submit this to the arch maintainers
after the generic tracehook series settles in. For now, that work is
available in my GIT repositories, and in patch and mbox-of-patches form at
http://people.redhat.com/roland/utrace/2.6-current/
This paves the way for my "utrace" work, to be submitted later. But it is
not innately tied to that. I hope that the tracehook series can go in
soon regardless of what eventually does or doesn't go on top of it. For
anyone implementing any kind of new tracing/debugging plan, or just
understanding all the context of the existing ptrace implementation,
having tracehook.h makes things much easier to find and understand.
This patch:
This adds the new kernel-internal header file <linux/tracehook.h>. This
is not yet used at all. The comments in the header introduce what the
following series of patches is about.
The aim is to formalize and consolidate all the places that the core
kernel code and the arch code now ties into the ptrace implementation.
These patches mostly don't cause any functional change. They just move
the details of ptrace logic out of core code into tracehook.h inlines,
where they are mostly compiled away to the same as before. All that
changes is that everything is thoroughly documented and any future
reworking of ptrace, or addition of something new, would not have to touch
core code all over, just change the tracehook.h inlines.
The new linux/ptrace.h inlines are used by the following patches in the
new tracehook_*() inlines. Using these helpers for the ptrace event stops
makes it simple to change or disable the old ptrace implementation of
these stops conditionally later.
Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:08 -07:00
endian: Always evaluate arguments.
2008-07-25 09:28:09 -07:00
gpio: max732x driver
2008-07-25 10:53:30 -07:00
lockd: Pass "struct sockaddr *" to new failover-by-IP function
2008-07-15 16:11:29 -04:00
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
2008-07-23 18:24:08 -07:00
IB/mlx4: Add support for memory management extensions and local DMA L_Key
2008-07-23 08:12:26 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
2008-07-16 15:17:52 -07:00
UBI: amend commentaries
2008-07-24 13:32:56 +03:00
netfilter: nfnetlink_log: send complete hardware header
2008-07-21 10:11:00 -07:00
remove unused #include <linux/dirent.h>'s
2008-07-25 10:53:34 -07:00
md: Protect access to mddev->disks list using RCU
2008-07-21 17:05:25 +10:00
gpio: mcp23s08 handles multiple chips per chipselect
2008-07-25 10:53:30 -07:00
dma-mapping: add the device argument to dma_mapping_error()
2008-07-26 12:00:03 -07:00
Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux
2008-07-20 21:21:46 -07:00
Rename WARN() to WARNING() to clear the namespace
2008-07-25 10:53:29 -07:00
bsdacct: switch from global bsd_acct_struct instance to per-pidns one
2008-07-25 10:53:47 -07:00
pm: acpi hibernation: utilize hardware signature
2008-07-24 10:47:24 -07:00
include/linux/aio.h: removed duplicated include
2008-07-26 12:00:04 -07:00
flag parameters: anon_inode_getfd extension
2008-07-24 10:47:27 -07:00
async_tx: remove depend_tx from async_tx_sync_epilog
2008-07-17 17:59:55 -07:00
fbdev: LCD backlight driver using Atmel PWM driver
2008-07-24 10:47:41 -07:00
remove the v850 port
2008-07-24 10:47:24 -07:00
autofs4: remove unused ioctls
2008-07-24 10:47:33 -07:00
ELF loader support for auxvec base platform string
2008-07-25 15:44:39 +10:00
rtc: BCD codeshrink
2008-07-24 10:47:33 -07:00
security: protect legacy applications from executing with insufficient privilege
2008-07-24 10:47:22 -07:00
block: Trivial fix for blk_integrity_rq()
2008-07-16 14:51:41 -07:00
bootmem: Move node allocation macros back to !HAVE_ARCH_BOOTMEM_NODE
2008-07-25 11:36:44 -07:00
cgroup_clone: use pid of newly created task for new cgroup
2008-07-25 10:53:37 -07:00
coda: remove CODA_FS_OLD_API
2008-07-25 10:53:33 -07:00
configfs: Allow ->make_item() and ->make_group() to return detailed errors.
2008-07-17 15:21:29 -07:00
workqueues: make get_online_cpus() useable for work->func()
2008-07-25 10:53:40 -07:00
Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-07-23 19:36:53 -07:00
cpu hotplug, sched: Introduce cpu_active_map and redo sched domain managment (take 2)
2008-07-18 13:22:25 +02:00
calgary iommu: use the first kernels TCE tables in kdump
2008-07-25 10:53:41 -07:00
[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC
2008-07-12 08:22:32 -05:00
tty: add more tty_port fields
2008-07-20 17:12:38 -07:00
I/OAT: I/OAT version 3.0 support
2008-07-22 17:30:57 -07:00
Merge branch 'linus' into core/rcu
2008-07-11 10:46:50 +02:00
dccp: Upgrade NDP count from 3 to 6 bytes
2008-07-13 11:51:40 +01:00
debugfs: Implement debugfs_remove_recursive()
2008-07-21 21:54:59 -07:00
per-task-delay-accounting: add memory reclaim delay
2008-07-25 10:53:47 -07:00
dm: introduce merge_bvec_fn
2008-07-21 12:00:37 +01:00
driver core: remove DEVICE_ID_SIZE define
2008-07-21 21:54:53 -07:00
remove the in-kernel struct dirent{,64}
2008-07-25 10:53:34 -07:00
dm: introduce merge_bvec_fn
2008-07-21 12:00:37 +01:00
powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code
2008-07-22 10:39:36 +10:00
async_tx: make async_tx_test_ack a boolean routine
2008-07-17 17:59:56 -07:00
driver core: remove DEVICE_NAME_SIZE define
2008-07-21 21:54:53 -07:00
flag parameters: NONBLOCK in eventfd
2008-07-24 10:47:29 -07:00
flag parameters add-on: remove epoll_create size param
2008-07-24 10:47:29 -07:00
ext2: fix typo in Hurd part of include/linux/ext2_fs.h
2008-07-25 10:53:31 -07:00
ext3: handle corrupted orphan list at mount
2008-07-25 10:53:32 -07:00
video/fb: cleanup FB_MAJOR usage
2008-07-24 10:47:41 -07:00
firmware: allow firmware files to be built into kernel image
2008-07-10 14:30:13 +01:00
Freezer: Introduce PF_FREEZER_NOSIG
2008-07-16 23:27:03 +02:00
mm: spinlock tree_lock
2008-07-26 12:00:06 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
2008-07-22 19:09:51 -07:00
gianfar: Add magic packet and suspend/resume support.
2008-07-16 17:57:47 -05:00
ftrace: add ftrace_kill_atomic
2008-07-11 15:49:21 +02:00
fuse: nfs export special lookups
2008-07-25 10:53:48 -07:00
gs: use tty_port
2008-07-20 17:12:36 -07:00
fs/partition/check.c: fix return value warning
2008-07-25 10:53:44 -07:00
mm: add alloc_pages_exact() and free_pages_exact()
2008-07-24 10:47:20 -07:00
gpio: sysfs interface
2008-07-25 10:53:30 -07:00
esp: use tty_port
2008-07-20 17:12:36 -07:00
HID: add n-trig digitizer usage
2008-07-23 15:25:21 +02:00
hugetlb: allow arch overridden hugepage allocation
2008-07-24 10:47:19 -07:00
i2c-algo-pcf: Drop unused struct members
2008-07-14 22:38:31 +02:00
V4L/DVB (8246): tvaudio: Stop I2C driver ID abuse
2008-07-20 07:18:38 -03:00
i2c: Add detection capability to new-style drivers
2008-07-14 22:38:36 +02:00
dma-mapping: add the device argument to dma_mapping_error()
2008-07-26 12:00:03 -07:00
ide: drop 'name' parameter from ->init_chipset method
2008-07-24 22:53:33 +02:00
idr: make idr_find rcu-safe
2008-07-25 10:53:42 -07:00
packet: add PACKET_RESERVE sockopt
2008-07-18 18:05:19 -07:00
tun: Fix/rewrite packet filtering logic
2008-07-14 22:18:19 -07:00
vlan: Don't store VLAN tag in cb
2008-07-14 22:49:06 -07:00
ihex: request_ihex_firmware() function to load and validate firmware
2008-07-10 14:47:38 +01:00
Better interface for hooking early initcalls
2008-07-26 12:00:04 -07:00
introduce PF_KTHREAD flag
2008-07-25 10:53:39 -07:00
flag parameters: NONBLOCK in inotify_init
2008-07-24 10:47:29 -07:00
Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next
2008-07-21 00:55:14 -04:00
Merge branch 'genirq' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-07-15 10:39:22 -07:00
PNP: support optional IRQ resources
2008-07-16 23:27:07 +02:00
ipc: do not use a negative value to re-enable msgmni automatic recomputing
2008-07-25 10:53:42 -07:00
ipv6: __KERNEL__ ifdef struct ipv6_devconf
2008-07-21 13:41:16 -07:00
locking: add typecheck on irqsave and friends for correct flags
2008-07-25 10:53:26 -07:00
istallion: use tty_port
2008-07-20 17:12:37 -07:00
jbd2: Remove data=ordered mode support using jbd buffer heads
2008-07-11 19:27:31 -04:00
kallsyms: unify 32- and 64-bit code
2008-07-25 10:53:29 -07:00
Merge git://git.infradead.org/~dwmw2/random-2.6
2008-07-25 12:01:37 -07:00
printk ratelimiting rewrite
2008-07-25 10:53:29 -07:00
kexec jump
2008-07-26 12:00:04 -07:00
call_usermodehelper(): increase reliability
2008-07-25 10:53:28 -07:00
mm: create /sys/kernel/mm
2008-07-24 10:47:17 -07:00
kprobes: improve kretprobe scalability with hashed locking
2008-07-25 10:53:30 -07:00
Label kthread_create() with printf attribute tag.
2008-07-24 19:11:15 -07:00
KVM: Support mixed endian machines
2008-07-20 12:42:32 +03:00
KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction
2008-07-20 12:42:40 +03:00
lcd: add lcd_device to check_fb() entry in lcd_ops
2008-07-24 10:47:40 -07:00
leds: Add pca9532 led driver
2008-07-23 09:49:56 +01:00
leds: Add support for Philips PCA955x I2C LED drivers
2008-07-23 09:49:56 +01:00
libata/ahci: enclosure management support
2008-07-14 15:59:33 -04:00
Merge branch 'auto-ftrace-next' into tracing/for-linus
2008-07-14 16:11:52 +02:00
lists: remove a redundant conditional definition of list_add()
2008-07-25 10:53:27 -07:00
video/fb: cleanup FB_MAJOR usage
2008-07-24 10:47:41 -07:00
memcg: helper function for relcaim from shmem.
2008-07-25 10:53:37 -07:00
memory-hotplug: add sysfs removable attribute for hotplug memory remove
2008-07-24 10:47:21 -07:00
mm: make CONFIG_MIGRATION available w/o CONFIG_NUMA
2008-07-24 10:47:21 -07:00
memstick: add "start" and "stop" methods to memstick device
2008-07-26 12:00:04 -07:00
mm: make CONFIG_MIGRATION available w/o CONFIG_NUMA
2008-07-24 10:47:21 -07:00
mm: introduce get_user_pages_fast
2008-07-26 12:00:05 -07:00
coredump: kill mm->core_done
2008-07-25 10:53:40 -07:00
[S390] css: Use css_device_id for bus matching.
2008-07-14 10:02:12 +02:00
remove the v850 port
2008-07-24 10:47:24 -07:00
vfs: add hooks for ext4's delayed allocation support
2008-07-11 19:27:31 -04:00
fatfs: add UTC timestamp option
2008-07-25 10:53:34 -07:00
printk ratelimiting rewrite
2008-07-25 10:53:29 -07:00
net: Fix build failure with 'make mandocs'.
2008-07-22 14:09:06 -07:00
workqueues: make get_online_cpus() useable for work->func()
2008-07-25 10:53:40 -07:00
cgroup_clone: use pid of newly created task for new cgroup
2008-07-25 10:53:37 -07:00
of_gpio: Should use new <linux/gpio.h> header
2008-07-22 10:39:30 +10:00
slob: record page flag overlays explicitly
2008-07-24 10:47:15 -07:00
mm: speculative page references
2008-07-26 12:00:06 -07:00
parport/share.c: proper externs
2008-07-26 12:00:03 -07:00
UFS: add const to parser token table
2008-07-24 11:50:15 -07:00
PCI PM: make more PCI PM core functionality available to drivers
2008-07-22 14:25:38 -07:00
edac: i5100 new intel chipset driver
2008-07-25 10:53:48 -07:00
percpu_counter: new function percpu_counter_sum_and_set
2008-07-11 19:27:31 -04:00
pidns: remove find_task_by_pid, unused for a long time
2008-07-25 10:53:45 -07:00
pidns: add the struct bsd_acct_struct pointer on pid_namespace struct
2008-07-25 10:53:46 -07:00
net-sched: cls_flow: add perturbation support
2008-07-14 20:36:32 -07:00
net_sched: Add size table for qdiscs
2008-07-20 00:08:47 -07:00
pm: add new PM_EVENT codes for runtime power transitions
2008-07-24 10:47:23 -07:00
PCI: include linux/pm_wakeup.h for device_set_wakeup_capable
2008-07-14 14:30:21 -07:00
PNP: convert resource options to single linked list
2008-07-16 23:27:07 +02:00
proc: always do ->release
2008-07-25 10:53:44 -07:00
build-kernel-profileo-only-when-requested-cleanups
2008-07-25 10:53:27 -07:00
tracehook: add linux/tracehook.h
2008-07-26 12:00:08 -07:00
quota: implement sending information via netlink about user below quota
2008-07-25 10:53:35 -07:00
quota: convert macros to inline functions
2008-07-25 10:53:35 -07:00
radix-tree: add gang_lookup_slot, gang_lookup_slot_tag
2008-07-26 12:00:06 -07:00
printk ratelimiting rewrite
2008-07-25 10:53:29 -07:00
printk ratelimiting rewrite
2008-07-25 10:53:29 -07:00
include: use get/put_unaligned_* helpers
2008-07-25 10:53:26 -07:00
reiserfs: convert j_commit_lock to mutex
2008-07-25 10:53:33 -07:00
relay: add buffer-only channels; useful for early logging
2008-07-26 12:00:04 -07:00
res_counter: limit change support ebusy
2008-07-25 10:53:37 -07:00
rtc: remove BKL for ioctl()
2008-07-24 10:47:33 -07:00
net_sched: Add size table for qdiscs
2008-07-20 00:08:47 -07:00
sg: reimplement sg mapping iterator
2008-07-23 14:42:09 +02:00
Full conversion to early_initcall() interface, remove old interface
2008-07-26 12:00:04 -07:00
security: remove unused forwards
2008-07-24 10:47:22 -07:00
ipc/sem.c: rewrite undo list locking
2008-07-25 10:53:42 -07:00
Remove __DECLARE_SEMAPHORE_GENERIC
2008-07-24 08:31:21 -04:00
proc: consolidate per-net single-release callers
2008-07-18 04:07:44 -07:00
remove the v850 port
2008-07-24 10:47:24 -07:00
flag parameters: NONBLOCK in signalfd
2008-07-24 10:47:29 -07:00
vlan: Don't store VLAN tag in cb
2008-07-14 22:49:06 -07:00
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
sm501: gpio I2C support
2008-07-25 10:53:30 -07:00
include: use get/put_unaligned_* helpers
2008-07-25 10:53:26 -07:00
[NET] smc91x: prepare SMC_USE_PXA_DMA to be specified in platform data
2008-07-12 21:52:41 +01:00
Full conversion to early_initcall() interface, remove old interface
2008-07-26 12:00:04 -07:00
net: Use standard structures for generic socket address structures.
2008-07-19 22:35:47 -07:00
locking: add typecheck on irqsave and friends for correct flags
2008-07-25 10:53:26 -07:00
stallion: use tty_port
2008-07-20 17:12:37 -07:00
move memory_read_from_buffer() from fs.h to string.h
2008-07-24 10:47:13 -07:00
kexec jump: save/restore device state
2008-07-26 12:00:04 -07:00
synclink_gt: add serial bit order control
2008-07-22 13:03:29 -07:00
sys_paccept definition missing __user annotation
2008-07-25 17:28:49 -07:00
sysdev: Add utility functions for simple int/ulong variable sysdev attributes
2008-07-21 21:55:02 -07:00
driver core: Suppress sysfs warnings for device_rename().
2008-07-21 21:55:01 -07:00
per-task-delay-accounting: update taskstats for memory reclaim delay
2008-07-25 10:53:47 -07:00
tcp: Remove redundant checks when setting eff_sacks
2008-07-19 00:07:02 -07:00
nohz: prevent tick stop outside of the idle loop
2008-07-18 18:10:28 +02:00
flag parameters: NONBLOCK in timerfd_create
2008-07-24 10:47:29 -07:00
tracehook: add linux/tracehook.h
2008-07-26 12:00:08 -07:00
tty: Split ldisc code into its own file
2008-07-22 13:03:27 -07:00
tty: rework break handling
2008-07-22 13:03:28 -07:00
tty: Ldisc revamp
2008-07-20 17:12:34 -07:00
split the typecheck macros out of include/linux/kernel.h
2008-07-25 10:53:26 -07:00
UIO: minor style and comment fixes
2008-07-21 21:54:55 -07:00
USB: Force unbinding of drivers lacking reset_resume or other methods
2008-07-21 15:16:40 -07:00
USB: remove CVS keywords
2008-07-21 15:15:55 -07:00
V4L/DVB (8197): gspca: pac207 frames no more decoded in the subdriver.
2008-07-20 07:17:02 -03:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
virtio_blk: check for hardsector size from host
2008-07-25 12:06:05 +10:00
virtio: Rename set_features to finalize_features
2008-07-25 12:06:12 +10:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
virtio: Add transport feature handling stub for virtio_ring.
2008-07-25 12:06:14 +10:00
virtio: clarify that ABI is usable by any implementations
2008-07-25 12:06:04 +10:00
mm/vmstat.c: proper externs
2008-07-24 10:47:14 -07:00
workqueues: implement flush_work()
2008-07-25 10:53:40 -07:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2008-07-15 08:36:38 -07:00
xfrm: Add a XFRM_STATE_AF_UNSPEC flag to xfrm_usersa_info
2008-07-10 16:55:37 -07:00
88ac2921a7