]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
microblaze: ftrace: Pass the first calling instruction for dynamic ftrace
authorMichal Simek <monstr@monstr.eu>
Mon, 7 May 2012 12:21:02 +0000 (14:21 +0200)
committerMichal Simek <monstr@monstr.eu>
Fri, 25 May 2012 04:34:35 +0000 (06:34 +0200)
commitd65987a88dc8b182ef933edf93c23cf4233dd8d5
treebf89bd10520302bc2de01f4fce13068f8a80daae
parentf397c077e114df07bd2b94a16681a04be8d59dff
microblaze: ftrace: Pass the first calling instruction for dynamic ftrace

Selftest for dynamic ftrace requres to pass address of the first
calling instruction because hash function is calculated from it.

ftrace_update_ftrace_func setups pointer to function which is called
in _mcount function. trace_selftest is not aware about instruction
size (for microblaze 8 - imm and addik) and that's why we have
to pass in r5 address of imm not addik which is in r15.12

For more info look at ftrace_ops_list_func/ftrace.c.

Signed-off-by: Michal Simek <monstr@monstr.eu>
arch/microblaze/kernel/mcount.S