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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2013-12-21 17:39:40 -0500
committerSteven Rostedt <rostedt@goodmis.org>2014-01-02 16:17:12 -0500
commit098c879e1f2d6ee7afbfe959f6b04070065cec90 (patch)
tree22a2d64f30c82b70619786bc541ddcbe320f5d44 /include/linux/ftrace.h
parentac38fb8582d86ba887b5d07c0912dec135bf6931 (diff)
tracing: Add generic tracing_lseek() function
Trace event triggers added a lseek that uses the ftrace_filter_lseek() function. Unfortunately, when function tracing is not configured in that function is not defined and the kernel fails to build. This is the second time that function was added to a file ops and it broke the build due to requiring special config dependencies. Make a generic tracing_lseek() that all the tracing utilities may use. Also, modify the old ftrace_filter_lseek() to return 0 instead of 1 on WRONLY. Not sure why it was a 1 as that does not make sense. This also changes the old tracing_seek() to modify the file pos pointer on WRONLY as well. Reported-by: kbuild test robot <fengguang.wu@intel.com> Tested-by: Tom Zanussi <tom.zanussi@linux.intel.com> Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/ftrace.h')
-rw-r--r--include/linux/ftrace.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 31ea4b428360..f4233b195dab 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -570,8 +570,6 @@ static inline int
ftrace_regex_release(struct inode *inode, struct file *file) { return -ENODEV; }
#endif /* CONFIG_DYNAMIC_FTRACE */
-loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence);
-
/* totally disable ftrace - can not re-enable after this */
void ftrace_kill(void);