Messages in this thread Patch in this message | | | Date | Tue, 21 Feb 2012 15:03:12 -0500 | From | Jason Baron <> | Subject | [PATCH 06/10] tracepoints: update to use very_unlikely() |
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Update tracepoins with api change: static_branch() -> very_unlikely().
Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Jason Baron <jbaron@redhat.com> --- include/linux/tracepoint.h | 4 ++-- kernel/tracepoint.c | 12 ++++++------ 2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index df0a779..282cf59 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -143,7 +143,7 @@ static inline void tracepoint_synchronize_unregister(void) extern struct tracepoint __tracepoint_##name; \ static inline void trace_##name(proto) \ { \ - if (static_branch(&__tracepoint_##name.key)) \ + if (very_unlikely(&__tracepoint_##name.key)) \ __DO_TRACE(&__tracepoint_##name, \ TP_PROTO(data_proto), \ TP_ARGS(data_args), \ @@ -176,7 +176,7 @@ static inline void tracepoint_synchronize_unregister(void) __attribute__((section("__tracepoints_strings"))) = #name; \ struct tracepoint __tracepoint_##name \ __attribute__((section("__tracepoints"))) = \ - { __tpstrtab_##name, JUMP_LABEL_INIT, reg, unreg, NULL };\ + { __tpstrtab_##name, JUMP_LABEL_INIT_FALSE, reg, unreg, NULL };\ static struct tracepoint * const __tracepoint_ptr_##name __used \ __attribute__((section("__tracepoints_ptrs"))) = \ &__tracepoint_##name; diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index f1539de..ad32493 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -256,9 +256,9 @@ static void set_tracepoint(struct tracepoint_entry **entry, { WARN_ON(strcmp((*entry)->name, elem->name) != 0); - if (elem->regfunc && !jump_label_enabled(&elem->key) && active) + if (elem->regfunc && !jump_label_true(&elem->key) && active) elem->regfunc(); - else if (elem->unregfunc && jump_label_enabled(&elem->key) && !active) + else if (elem->unregfunc && jump_label_true(&elem->key) && !active) elem->unregfunc(); /* @@ -269,9 +269,9 @@ static void set_tracepoint(struct tracepoint_entry **entry, * is used. */ rcu_assign_pointer(elem->funcs, (*entry)->funcs); - if (active && !jump_label_enabled(&elem->key)) + if (active && !jump_label_true(&elem->key)) jump_label_inc(&elem->key); - else if (!active && jump_label_enabled(&elem->key)) + else if (!active && jump_label_true(&elem->key)) jump_label_dec(&elem->key); } @@ -283,10 +283,10 @@ static void set_tracepoint(struct tracepoint_entry **entry, */ static void disable_tracepoint(struct tracepoint *elem) { - if (elem->unregfunc && jump_label_enabled(&elem->key)) + if (elem->unregfunc && jump_label_true(&elem->key)) elem->unregfunc(); - if (jump_label_enabled(&elem->key)) + if (jump_label_true(&elem->key)) jump_label_dec(&elem->key); rcu_assign_pointer(elem->funcs, NULL); } -- 1.7.7.5
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