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| author | Steven Rostedt <srostedt@redhat.com> | 2012-04-27 09:13:18 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-05-16 20:00:27 -0400 |
| commit | e4f5d5440bb860a3e8942ca8f7277a7f31798965 (patch) | |
| tree | 324091109c5bbaae5a06e52a77369cf2731ebb54 | |
| parent | 8ed3e2cfe40ffe43630fd8efa34fc97c95b4c298 (diff) | |
| download | op-kernel-dev-e4f5d5440bb860a3e8942ca8f7277a7f31798965.zip op-kernel-dev-e4f5d5440bb860a3e8942ca8f7277a7f31798965.tar.gz | |
ftrace/x86: Have x86 ftrace use the ftrace_modify_all_code()
To remove duplicate code, have the ftrace arch_ftrace_update_code()
use the generic ftrace_modify_all_code(). This requires that the
default ftrace_replace_code() becomes a weak function so that an
arch may override it.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 15 | ||||
| -rw-r--r-- | include/linux/ftrace.h | 1 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 4 |
3 files changed, 5 insertions, 15 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 4243e8b..32ff365 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -435,7 +435,7 @@ static void run_sync(void) local_irq_disable(); } -static void ftrace_replace_code(int enable) +void ftrace_replace_code(int enable) { struct ftrace_rec_iter *iter; struct dyn_ftrace *rec; @@ -493,18 +493,7 @@ void arch_ftrace_update_code(int command) { modifying_ftrace_code++; - 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); modifying_ftrace_code--; } diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index cd72ace..55e6d63 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -314,6 +314,7 @@ ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable); /* defined in arch */ extern int ftrace_ip_converted(unsigned long ip); extern int ftrace_dyn_arch_init(void *data); +extern void ftrace_replace_code(int enable); extern int ftrace_update_ftrace_func(ftrace_func_t func); extern void ftrace_caller(void); extern void ftrace_call(void); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 3c345825cc..a008663 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1683,7 +1683,7 @@ __ftrace_replace_code(struct dyn_ftrace *rec, int enable) return -1; /* unknow ftrace bug */ } -static void ftrace_replace_code(int update) +void __weak ftrace_replace_code(int enable) { struct dyn_ftrace *rec; struct ftrace_page *pg; @@ -1693,7 +1693,7 @@ static void ftrace_replace_code(int update) return; do_for_each_ftrace_rec(pg, rec) { - failed = __ftrace_replace_code(rec, update); + failed = __ftrace_replace_code(rec, enable); if (failed) { ftrace_bug(failed, rec->ip); /* Stop processing */ |
