Steven Rostedt
59df055f19
ftrace: trace different functions with a different tracer ...
Impact: new feature
Currently, the function tracer only gives you an ability to hook
a tracer to all functions being traced. The dynamic function trace
allows you to pick and choose which of those functions will be
traced, but all functions being traced will call all tracers that
registered with the function tracer.
This patch adds a new feature that allows a tracer to hook to specific
functions, even when all functions are being traced. It allows for
different functions to call different tracer hooks.
The way this is accomplished is by a special function that will hook
to the function tracer and will set up a hash table knowing which
tracer hook to call with which function. This is the most general
and easiest method to accomplish this. Later, an arch may choose
to supply their own method in changing the mcount call of a function
to call a different tracer. But that will be an exercise for the
future.
To register a function:
struct ftrace_hook_ops {
void (*func)(unsigned long ip,
unsigned long parent_ip,
void **data);
int (*callback)(unsigned long ip, void **data);
void (*free)(void **data);
};
int register_ftrace_function_hook(char *glob, struct ftrace_hook_ops *ops,
void *data);
glob is a simple glob to search for the functions to hook.
ops is a pointer to the operations (listed below)
data is the default data to be passed to the hook functions when traced
ops:
func is the hook function to call when the functions are traced
callback is a callback function that is called when setting up the hash.
That is, if the tracer needs to do something special for each
function, that is being traced, and wants to give each function
its own data. The address of the entry data is passed to this
callback, so that the callback may wish to update the entry to
whatever it would like.
free is a callback for when the entry is freed. In case the tracer
allocated any data, it is give the chance to free it.
To unregister we have three functions:
void
unregister_ftrace_function_hook(char *glob, struct ftrace_hook_ops *ops,
void *data)
This will unregister all hooks that match glob, point to ops, and
have its data matching data. (note, if glob is NULL, blank or '*',
all functions will be tested).
void
unregister_ftrace_function_hook_func(char *glob,
struct ftrace_hook_ops *ops)
This will unregister all functions matching glob that has an entry
pointing to ops.
void unregister_ftrace_function_hook_all(char *glob)
This simply unregisters all funcs.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2009-02-16 22:44:09 -05:00
byteorder: only use linux/swab.h
2009-01-06 18:10:26 -08:00
headers_check fix: can/bcm.h
2009-01-30 19:50:25 +05:30
headers_check fix: dvb/video.h
2009-01-30 19:59:53 +05:30
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2009-01-06 17:14:01 -08:00
NLM: Rewrite IPv4 privileged requester's check
2009-01-06 11:53:56 -05:00
regulator: PCF50633 pmic driver
2009-01-11 01:34:25 +01:00
Merge git://git.infradead.org/mtd-2.6
2009-01-09 12:37:15 -08:00
headers_check fix: netfilter/xt_conntrack.h
2009-01-30 20:00:47 +05:30
headers_check fix: nfsd/syscall.h
2009-01-30 23:30:42 +05:30
headers_check fix: raid/md_p.h
2009-01-30 23:32:45 +05:30
regulator: fix kernel-doc warnings
2009-01-08 20:10:38 +00:00
headers_check fix: spi/spidev.h
2009-01-30 23:33:12 +05:30
headers_check fix: tc_act/tc_pedit.h
2009-01-30 23:34:34 +05:30
headers_check fix: tc_ematch/tc_em_text.h
2009-01-30 23:36:36 +05:30
headers_check fix: usb/gadgetfs.h
2009-01-30 23:37:37 +05:30
wimax: export linux/wimax.h and linux/wimax/i2400m.h with headers_install
2009-01-07 10:00:22 -08:00
Merge branch 'simplify_PRT' into release
2009-01-09 03:41:08 -05:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/aio_abi.h
2009-01-30 23:38:03 +05:30
async: Rename _special -> _domain for clarity.
2009-02-08 09:56:11 -08:00
dmaengine: provide a common 'issue_pending_all' implementation
2009-01-06 11:38:14 -07:00
ide/libata: fix ata_id_is_cfa() (take 4)
2009-02-02 22:45:10 -05:00
headers_check fix: linux/atalk.h
2009-01-30 23:38:37 +05:30
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/atmbr2684.h
2009-01-30 23:39:08 +05:30
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
2009-01-09 11:52:14 -08:00
autofs4: improve parameter usage
2009-01-06 15:59:23 -08:00
headers_check fix: linux/auto_fs4.h
2009-01-30 23:39:42 +05:30
ELF: implement AT_RANDOM for glibc PRNG seeding
2009-01-08 08:31:12 -08:00
backlight: Add suspend/resume support to the backlight core
2009-01-08 15:37:43 +00:00
headers_check fix: linux/bfs_fs.h
2009-01-30 23:40:06 +05:30
fs/exec.c: make do_coredump() void
2009-01-06 15:59:29 -08:00
bio.h: If they MUST be inlined, then use __always_inline
2009-02-02 12:41:07 +01:00
block: fix inconsistent parenthesisation of QUEUE_FLAG_DEFAULT
2009-02-02 08:43:48 +01:00
Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core
2009-02-03 06:25:38 +01:00
filesystem freeze: implement generic freeze feature
2009-01-09 16:54:42 -08:00
headers_check fix: linux/capability.h
2009-01-30 23:41:27 +05:30
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/cdrom.h
2009-01-30 23:44:08 +05:30
cgroups: fix lockdep subclasses overflow
2009-02-11 14:25:36 -08:00
headers_check fix: linux/cgroupstats.h
2009-01-30 23:44:41 +05:30
hrtimers: allow the hot-unplugging of all cpus
2009-01-30 22:35:29 +01:00
[CVE-2009-0029] Move compat system call declarations to compat header file
2009-01-14 14:15:14 +01:00
compiler-gcc.h: add more comments to RELOC_HIDE
2009-01-09 16:54:41 -08:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
cpuset: remove remaining pointers to cpumask_t
2009-01-08 08:31:11 -08:00
crypto: api - Fix zeroing on free
2009-02-05 16:48:53 +11:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
Fix "multiple definition of `debugfs_create_size_t'"
2009-01-26 19:21:26 -08:00
Revert "driver core: create a private portion of struct device"
2009-01-09 15:06:12 -08:00
m68k: dio - Kill warn_unused_result warnings
2009-01-12 20:56:41 +01:00
headers_check fix: linux/dlm_plock.h
2009-01-30 23:45:32 +05:30
net_dma: call dmaengine_get only if NET_DMA enabled
2009-02-06 22:06:43 -08:00
dmi: Fix build breakage
2009-01-28 07:50:14 -08:00
headers_check fix: linux/dn.h
2009-01-30 23:46:03 +05:30
atmel-mci: convert to dma_request_channel and down-level dma_slave
2009-01-06 11:38:16 -07:00
headers_check fix: linux/edd.h
2009-01-30 23:46:40 +05:30
headers_check fix: linux/efs_fs_sb.h
2009-01-30 23:47:07 +05:30
headers_check fix: linux/elf-fdpic.h
2009-01-30 23:47:59 +05:30
headers_check fix: linux/elf.h
2009-01-30 23:48:33 +05:30
headers_check fix: linux/errqueue.h
2009-01-30 23:49:07 +05:30
ext2: tighten restrictions on inode flags
2009-01-08 08:31:00 -08:00
ext2: allocate ->s_blockgroup_lock separately
2009-01-08 08:31:00 -08:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2009-01-08 17:14:59 -08:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2009-01-08 17:14:59 -08:00
fbmem: don't call copy_from/to_user() with mutex held
2009-02-05 12:56:46 -08:00
filesystem freeze: implement generic freeze feature
2009-01-09 16:54:42 -08:00
ftrace: trace different functions with a different tracer
2009-02-16 22:44:09 -05:00
ring-buffer: use generic version of in_nmi
2009-02-07 20:03:33 -05:00
headers_check fix: linux/genetlink.h
2009-01-30 23:49:39 +05:30
mm: remove GFP_HIGHUSER_PAGECACHE
2009-01-06 15:59:01 -08:00
headers_check fix: linux/gfs2_ondisk.h
2009-01-30 23:50:12 +05:30
sched: do not account for NMIs
2009-02-12 14:16:46 -05:00
headers_check fix: linux/hid.h
2009-01-30 23:50:37 +05:30
headers_check fix: linux/hiddev.h
2009-01-30 23:51:17 +05:30
hugetlbfs: fix build failure with !CONFIG_HUGETLBFS
2009-02-10 14:56:59 -08:00
i2c: Delete many unused adapter IDs
2009-01-26 21:19:52 +01:00
i2c: Warn on deprecated binding model use
2009-01-26 21:19:57 +01:00
headers_check fix: linux/icmpv6.h
2009-01-30 23:51:41 +05:30
IDE: fix sparse signed-ness errors with host->host_busy
2009-01-14 19:19:04 +01:00
headers_check fix: linux/if_addr.h
2009-01-30 23:52:16 +05:30
headers_check fix: linux/if_addrlabel.h
2009-01-30 23:52:41 +05:30
headers_check fix: linux/if_fc.h
2009-01-30 23:53:12 +05:30
net: Fix linux/if_frad.h's suitability for userspace.
2009-01-26 12:30:12 -08:00
headers_check fix: linux/if_hippi.h
2009-01-30 23:53:40 +05:30
headers_check fix: linux/if_link.h
2009-01-30 23:54:53 +05:30
headers_check fix: linux/if_ppp.h
2009-01-30 23:55:45 +05:30
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/if_strip.h
2009-01-30 23:56:13 +05:30
headers_check fix: linux/if_tr.h
2009-01-30 23:56:48 +05:30
net: Fix userland breakage wrt. linux/if_tunnel.h
2009-02-02 13:27:44 -08:00
vlan: Add GRO interfaces
2009-01-06 10:50:09 -08:00
headers_check fix: linux/igmp.h
2009-01-30 23:57:16 +05:30
headers_check fix: linux/inet_diag.h
2009-01-30 23:57:43 +05:30
timers: split process wide cpu clocks/timers
2009-02-05 13:04:33 +01:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-06 17:10:53 -08:00
resources: fix parameter name and kernel-doc
2009-01-15 16:39:38 -08:00
headers_check fix: linux/ip6_tunnel.h
2009-01-30 23:58:12 +05:30
headers_check fix: linux/ipv6.h
2009-01-30 23:58:41 +05:30
headers_check fix: linux/ipv6_route.h
2009-01-30 23:59:12 +05:30
headers_check fix: linux/ipx.h
2009-01-30 23:59:44 +05:30
headers_check fix: linux/irda.h
2009-01-31 00:00:06 +05:30
jbd: fix missing kernel-doc
2009-01-15 16:39:37 -08:00
jbd2: On a __journal_expect() assertion failure printk "JBD2", not "EXT3-fs"
2009-01-16 11:57:00 -05:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
2009-02-02 23:55:27 -08:00
generic swap(): don't return a value from swap()
2009-02-05 12:56:46 -08:00
klist.c: bit 0 in pointer can't be used as flag
2009-01-20 20:52:10 -08:00
kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-29 18:04:43 -08:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
leds: leds-pcs9532 - Move i2c work to a workqueque
2009-01-08 12:38:58 +00:00
leds: Add suspend/resume to the core class
2009-01-08 17:55:03 +00:00
libata: implement HORKAGE_1_5_GBPS and apply it to WD My Book
2009-02-02 23:04:31 -05:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>
2009-01-15 16:39:38 -08:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
memcg: fix shmem's swap accounting
2009-01-08 08:31:10 -08:00
mm: show node to memory section relationship with symlinks in sysfs
2009-01-06 15:59:00 -08:00
mm: show node to memory section relationship with symlinks in sysfs
2009-01-06 15:59:00 -08:00
memstick: annotate endianness of attribute structs
2009-01-09 16:54:41 -08:00
mm: cleanup: remove #ifdef CONFIG_MIGRATION
2009-01-06 15:59:00 -08:00
headers_check fix: linux/minix_fs.h
2009-01-31 00:00:35 +05:30
mISDN: Add E-Channel logging features
2009-01-09 22:44:25 +01:00
BUGFIX: used NULL pointer at ioctl(sk,IMGETDEVINFO,&devinfo) when devinfo.id not registered
2009-01-11 17:55:16 +01:00
Do not account for the address space used by hugetlbfs using VM_ACCOUNT
2009-02-10 10:48:42 -08:00
inactive_anon_is_low: move to vmscan
2009-01-08 08:31:07 -08:00
NOMMU: Make mmap allocation page trimming behaviour configurable.
2009-01-08 12:04:47 +00:00
mm: introduce zone_reclaim struct
2009-01-08 08:31:07 -08:00
Fix longstanding "error: storage size of '__mod_dmi_device_table' isn't known"
2009-01-27 16:06:21 -08:00
module: remove over-zealous check in __module_get()
2009-02-07 08:33:01 -08:00
headers_check fix: linux/msdos_fs.h
2009-01-31 00:01:11 +05:30
headers_check fix: linux/neighbour.h
2009-01-31 00:01:42 +05:30
net: Add init_dummy_netdev() and fix EMAC driver using it
2009-01-14 21:05:05 -08:00
nfsd: last_byte_offset
2009-01-07 17:38:31 -05:00
headers_check fix: linux/nfs_idmap.h
2009-01-31 00:02:27 +05:30
mm: show node to memory section relationship with symlinks in sysfs
2009-01-06 15:59:00 -08:00
headers_check fix: linux/nubus.h
2009-01-31 00:15:24 +05:30
serial: Add driver for the Cell Network Processor serial port NWP device
2009-01-08 16:25:18 +11:00
drivers/of: Add the of_find_i2c_device_by_node function.
2009-01-09 15:49:06 -07:00
oprofile: make new cpu buffer functions part of the api
2009-01-07 22:48:15 +01:00
usb host: Oxford OXU210HP HCD driver.
2009-01-07 09:59:50 -08:00
badpage: simplify page_alloc flag check+clear
2009-01-06 15:59:07 -08:00
memcg: synchronized LRU
2009-01-08 08:31:05 -08:00
mm: get rid of pagevec_release_nonlru()
2009-01-06 15:59:00 -08:00
PCI hotplug: introduce functions for ACPI slot detection
2009-01-07 11:13:11 -08:00
PCI: return error on failure to read PCI ROMs
2009-02-04 16:58:41 -08:00
Merge branch 'linus' into release
2009-01-09 03:39:43 -05:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
2009-02-02 19:28:58 -08:00
PCI: pciehp: cleanup register and field definitions
2009-01-07 11:13:22 -08:00
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-06 17:10:04 -08:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/phonet.h
2009-01-31 00:02:54 +05:30
pid: implement ns_of_pid
2009-01-08 08:31:12 -08:00
pid: generalize task_active_pid_ns
2009-01-08 08:31:12 -08:00
headers_check fix: linux/pkt_cls.h
2009-01-31 00:03:40 +05:30
headers_check fix: linux/pkt_sched.h
2009-01-31 00:04:50 +05:30
PM: Simplify the new suspend/hibernation framework for devices
2009-01-06 10:44:29 -08:00
Fix misspellings in pm.h macros
2009-01-06 10:44:30 -08:00
poll: allow f_op->poll to sleep
2009-01-06 15:59:12 -08:00
headers_check fix: linux/ppp_defs.h
2009-01-31 00:05:30 +05:30
qnx: include <linux/types.h> for definitions of __[us]{8,16,32,64} types
2009-01-07 21:44:20 +01:00
qnx: include <linux/types.h> for definitions of __[us]{8,16,32,64} types
2009-01-07 21:44:20 +01:00
quota: Improve locking
2009-01-16 18:02:10 +01:00
include of <linux/types.h> is preferred over <asm/types.h>
2009-01-15 16:39:41 -08:00
headers_check fix: linux/random.h
2009-01-31 00:05:59 +05:30
rbtree: add const qualifier to some functions
2009-01-10 06:04:33 -08:00
cgroups: consolidate cgroup documents
2009-01-15 16:39:37 -08:00
tracing: fix typos in comments
2009-02-10 12:32:35 -05:00
rapidio: remove excess kernel-doc notation
2009-01-06 15:59:28 -08:00
badpage: remove vma from page_remove_rmap
2009-01-06 15:59:07 -08:00
headers_check fix: linux/rtnetlink.h
2009-01-31 00:15:57 +05:30
Merge branches 'tracing/ftrace', 'tracing/ring-buffer', 'tracing/sysprof', 'tracing/urgent' and 'linus' into tracing/core
2009-02-13 10:25:18 +01:00
Merge branch 'next' into for-linus
2009-01-07 09:58:22 +11:00
serial: Add driver for the Cell Network Processor serial port NWP device
2009-01-08 16:25:18 +11:00
headers_check fix: linux/signalfd.h
2009-01-31 00:06:33 +05:30
Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core
2009-02-03 06:25:38 +01:00
smp_call_function_single(): be slightly less stupid
2009-01-11 03:41:58 +01:00
headers_check fix: linux/sound.h
2009-01-31 00:07:00 +05:30
x86: spinlocks: define dummy __raw_spin_is_contended
2009-02-09 08:15:39 -08:00
Hibernation: Introduce system_entering_hibernation
2009-01-27 02:15:45 -05:00
byteorder: make swab.h include asm/swab.h like a regular header
2009-01-14 19:56:50 -08:00
memcg: fix shmem's swap accounting
2009-01-08 08:31:10 -08:00
headers_check fix: linux/synclink.h
2009-01-31 00:07:31 +05:30
syscall define: fix uml compile bug
2009-02-11 14:25:36 -08:00
headers_check fix: linux/taskstats.h
2009-01-31 00:08:18 +05:30
linux/types.h: Don't depend on __GNUC__ for __le64/__be64
2009-01-07 11:27:12 -08:00
uio: make uio_info's name and version const
2009-01-06 10:44:44 -08:00
USB: add kernel-doc for wusb_dev in struct usb_device
2009-01-27 16:15:36 -08:00
USB: storage: add last-sector hacks
2009-01-07 10:00:11 -08:00
headers_check fix: linux/video_decoder.h
2009-01-31 00:09:13 +05:30
headers_check fix: linux/video_encoder.h
2009-01-31 00:10:11 +05:30
headers_check fix: linux/videodev.h
2009-01-31 00:10:59 +05:30
headers_check fix: linux/virtio_blk.h
2009-01-31 00:11:25 +05:30
headers_check fix: linux/virtio_console.h
2009-01-31 00:12:44 +05:30
headers_check fix: linux/virtio_net.h
2009-01-31 00:13:08 +05:30
mm: make vread() and vwrite() declaration
2009-01-06 15:59:05 -08:00
wait: prevent exclusive waiter starvation
2009-02-05 12:56:48 -08:00
wimax: headers for kernel API and user space interaction
2009-01-07 10:00:16 -08:00
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-26 09:47:56 -08:00
fs: remove WB_SYNC_HOLD
2009-01-06 15:59:09 -08:00
59df055f19