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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 12:36:50 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 12:36:50 -0400 |
| commit | 5d434fcb255dec99189f1c58a06e4f56e12bf77d (patch) | |
| tree | 734289dc85074903d9e636a935d43414746e222c /Documentation/trace | |
| parent | 5a5a1bf099d6942399ea0b34a62e5f0bc4c5c36e (diff) | |
| parent | 071361d3473ebb8142907470ff12d59c59f6be72 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina:
"Usual stuff, mostly comment fixes, typo fixes, printk fixes and small
code cleanups"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (45 commits)
mm: Convert print_symbol to %pSR
gfs2: Convert print_symbol to %pSR
m32r: Convert print_symbol to %pSR
iostats.txt: add easy-to-find description for field 6
x86 cmpxchg.h: fix wrong comment
treewide: Fix typo in printk and comments
doc: devicetree: Fix various typos
docbook: fix 8250 naming in device-drivers
pata_pdc2027x: Fix compiler warning
treewide: Fix typo in printks
mei: Fix comments in drivers/misc/mei
treewide: Fix typos in kernel messages
pm44xx: Fix comment for "CONFIG_CPU_IDLE"
doc: Fix typo "CONFIG_CGROUP_CGROUP_MEMCG_SWAP"
mmzone: correct "pags" to "pages" in comment.
kernel-parameters: remove outdated 'noresidual' parameter
Remove spurious _H suffixes from ifdef comments
sound: Remove stray pluses from Kconfig file
radio-shark: Fix printk "CONFIG_LED_CLASS"
doc: put proper reference to CONFIG_MODULE_SIG_ENFORCE
...
Diffstat (limited to 'Documentation/trace')
| -rw-r--r-- | Documentation/trace/tracepoints.txt | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/Documentation/trace/tracepoints.txt b/Documentation/trace/tracepoints.txt index c0e1ceed75a4..da49437d5aeb 100644 --- a/Documentation/trace/tracepoints.txt +++ b/Documentation/trace/tracepoints.txt | |||
| @@ -81,7 +81,6 @@ tracepoint_synchronize_unregister() must be called before the end of | |||
| 81 | the module exit function to make sure there is no caller left using | 81 | the module exit function to make sure there is no caller left using |
| 82 | the probe. This, and the fact that preemption is disabled around the | 82 | the probe. This, and the fact that preemption is disabled around the |
| 83 | probe call, make sure that probe removal and module unload are safe. | 83 | probe call, make sure that probe removal and module unload are safe. |
| 84 | See the "Probe example" section below for a sample probe module. | ||
| 85 | 84 | ||
| 86 | The tracepoint mechanism supports inserting multiple instances of the | 85 | The tracepoint mechanism supports inserting multiple instances of the |
| 87 | same tracepoint, but a single definition must be made of a given | 86 | same tracepoint, but a single definition must be made of a given |
| @@ -100,17 +99,3 @@ core kernel image or in modules. | |||
| 100 | If the tracepoint has to be used in kernel modules, an | 99 | If the tracepoint has to be used in kernel modules, an |
| 101 | EXPORT_TRACEPOINT_SYMBOL_GPL() or EXPORT_TRACEPOINT_SYMBOL() can be | 100 | EXPORT_TRACEPOINT_SYMBOL_GPL() or EXPORT_TRACEPOINT_SYMBOL() can be |
| 102 | used to export the defined tracepoints. | 101 | used to export the defined tracepoints. |
| 103 | |||
| 104 | * Probe / tracepoint example | ||
| 105 | |||
| 106 | See the example provided in samples/tracepoints | ||
| 107 | |||
| 108 | Compile them with your kernel. They are built during 'make' (not | ||
| 109 | 'make modules') when CONFIG_SAMPLE_TRACEPOINTS=m. | ||
| 110 | |||
| 111 | Run, as root : | ||
| 112 | modprobe tracepoint-sample (insmod order is not important) | ||
| 113 | modprobe tracepoint-probe-sample | ||
| 114 | cat /proc/tracepoint-sample (returns an expected error) | ||
| 115 | rmmod tracepoint-sample tracepoint-probe-sample | ||
| 116 | dmesg | ||