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authorMasami Hiramatsu <hiramatu@sdl.hitachi.co.jp>2006-03-26 01:38:19 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:57:04 -0800
commitc9becf58d935265919bf1cb348b2c04492c8949d (patch)
tree57ec897e82bdd4c30eb19112be425fe4d64a1029 /arch/x86_64/kernel/process.c
parent311ac88fd2d4194a95e9e38d2fe08917be98723c (diff)
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[PATCH] kretprobe: kretprobe-booster
In normal operation, kretprobe makes a target function return to trampoline code. A kprobe (called trampoline_probe) has been inserted in the trampoline code. When the kernel hits this kprobe, it calls kretprobe's handler and it returns to the original return address. Kretprobe-booster removes the trampoline_probe. It allows the trampoline code to call kretprobe's handler directly instead of invoking kprobe. The trampoline code returns to the original return address. (changelog from Chuck Ebbert <76306.1226@compuserve.com> - thanks ;)) Signed-off-by: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/process.c')
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