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| author | Torsten Duwe <duwe@lst.de> | 2016-03-03 15:26:57 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-03-07 14:53:54 +1100 |
| commit | c96f83856f56a66a5d7fd730958bec80c9b5a020 (patch) | |
| tree | 6b307fef54e3df30a33e9a21813e7783bb3e3c40 /arch/powerpc/kernel | |
| parent | 336a7b5dd80a2a7b463dc8ede4862425940edeb5 (diff) | |
| download | linux-stable-c96f83856f56a66a5d7fd730958bec80c9b5a020.tar.gz linux-stable-c96f83856f56a66a5d7fd730958bec80c9b5a020.tar.bz2 linux-stable-c96f83856f56a66a5d7fd730958bec80c9b5a020.zip | |
powerpc/ftrace: Use generic ftrace_modify_all_code()
Convert powerpc's arch_ftrace_update_code() from its own version to use
the generic default functionality (without stop_machine -- our
instructions are properly aligned and the replacements atomic).
With this we gain error checking and the much-needed function_trace_op
handling.
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Torsten Duwe <duwe@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/ftrace.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c index 4505cbfd0e13..62899fbae703 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -449,20 +449,13 @@ void ftrace_replace_code(int enable) } } +/* + * Use the default ftrace_modify_all_code, but without + * stop_machine(). + */ void arch_ftrace_update_code(int command) { - if (command & FTRACE_UPDATE_CALLS) - ftrace_replace_code(1); - else if (command & FTRACE_DISABLE_CALLS) - ftrace_replace_code(0); - - if (command & FTRACE_UPDATE_TRACE_FUNC) - ftrace_update_ftrace_func(ftrace_trace_function); - - if (command & FTRACE_START_FUNC_RET) - ftrace_enable_ftrace_graph_caller(); - else if (command & FTRACE_STOP_FUNC_RET) - ftrace_disable_ftrace_graph_caller(); + ftrace_modify_all_code(command); } int __init ftrace_dyn_arch_init(void) |