aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/compiler.h
diff options
context:
space:
mode:
authorSteven Rostedt <srostedt@redhat.com>2008-11-12 15:24:24 -0500
committerIngo Molnar <mingo@elte.hu>2008-11-12 16:27:58 -0500
commit2ed84eeb8808cf3c9f039213ca137ffd7d753f0e (patch)
tree3aa22269a1fd5ed0b66826120ca9b572400962b5 /include/linux/compiler.h
parent68d119f0a66f7e3663304343b072e56a2693446b (diff)
trace: rename unlikely profiler to branch profiler
Impact: name change of unlikely tracer and profiler Ingo Molnar suggested changing the config from UNLIKELY_PROFILE to BRANCH_PROFILING. I never did like the "unlikely" name so I went one step farther, and renamed all the unlikely configurations to a "BRANCH" variant. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/compiler.h')
-rw-r--r--include/linux/compiler.h19
1 files changed, 10 insertions, 9 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 63b7d9089d6e..c7d804a7a4d6 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -59,26 +59,27 @@ extern void __chk_io_ptr(const volatile void __iomem *);
59 * specific implementations come from the above header files 59 * specific implementations come from the above header files
60 */ 60 */
61 61
62/* 62struct ftrace_branch_data {
63 * Note: DISABLE_UNLIKELY_PROFILE can be used by special lowlevel code
64 * to disable branch tracing on a per file basis.
65 */
66#if defined(CONFIG_TRACE_UNLIKELY_PROFILE) && !defined(DISABLE_UNLIKELY_PROFILE)
67struct ftrace_likely_data {
68 const char *func; 63 const char *func;
69 const char *file; 64 const char *file;
70 unsigned line; 65 unsigned line;
71 unsigned long correct; 66 unsigned long correct;
72 unsigned long incorrect; 67 unsigned long incorrect;
73}; 68};
74void ftrace_likely_update(struct ftrace_likely_data *f, int val, int expect); 69
70/*
71 * Note: DISABLE_BRANCH_PROFILING can be used by special lowlevel code
72 * to disable branch tracing on a per file basis.
73 */
74#if defined(CONFIG_TRACE_BRANCH_PROFILING) && !defined(DISABLE_BRANCH_PROFILING)
75void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
75 76
76#define likely_notrace(x) __builtin_expect(!!(x), 1) 77#define likely_notrace(x) __builtin_expect(!!(x), 1)
77#define unlikely_notrace(x) __builtin_expect(!!(x), 0) 78#define unlikely_notrace(x) __builtin_expect(!!(x), 0)
78 79
79#define likely_check(x) ({ \ 80#define likely_check(x) ({ \
80 int ______r; \ 81 int ______r; \
81 static struct ftrace_likely_data \ 82 static struct ftrace_branch_data \
82 __attribute__((__aligned__(4))) \ 83 __attribute__((__aligned__(4))) \
83 __attribute__((section("_ftrace_likely"))) \ 84 __attribute__((section("_ftrace_likely"))) \
84 ______f = { \ 85 ______f = { \
@@ -93,7 +94,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, int expect);
93 }) 94 })
94#define unlikely_check(x) ({ \ 95#define unlikely_check(x) ({ \
95 int ______r; \ 96 int ______r; \
96 static struct ftrace_likely_data \ 97 static struct ftrace_branch_data \
97 __attribute__((__aligned__(4))) \ 98 __attribute__((__aligned__(4))) \
98 __attribute__((section("_ftrace_unlikely"))) \ 99 __attribute__((section("_ftrace_unlikely"))) \
99 ______f = { \ 100 ______f = { \