const char *format; /* Marker format string, describing the
* variable argument list.
*/
- DEFINE_IMV(char, state);/* Immediate value state. */
+ DEFINE_IMV(char, state);/* Immediate value state. */
char ptype; /* probe type : 0 : single, 1 : multi */
/* Probe wrapper */
u16 channel_id; /* Numeric channel identifier, dynamic */
const char *tp_name; /* Optional tracepoint name */
void *tp_cb; /* Optional tracepoint callback */
void *location; /* Address of marker in code */
-} __attribute__((aligned(8)));
-
-#define CONFIG_MARKERS
-#ifdef CONFIG_MARKERS
+} __attribute__((aligned(128)));/*
+ * Aligned on 128 bytes because it is
+ * globally visible and gcc happily
+ * align these on the structure size.
+ */
#define GET_MARKER(channel, name) (__mark_##channel##_##name)
* because it must not require %-sign escaping, as we most certainly \
* have some %-signs in the format string. \
*/ \
- asm volatile ( \
- /* We only define these symbols if they have not yet been defined. Indeed, \
- * if two markers with the same channel/name are on the same line, they \
- * will try to create the same symbols, resulting in a conflict. This \
- * is not unusual as it can be the result of function inlining. \
- */ \
- ".ifndef __mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) "\n\t" \
- /*".section __markers_strings\n\t"*/ \
- ".section __markers_strings,\"aw\",@progbits\n\t" \
- "__mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) ":\n\t" \
- ".string \"" __stringify(channel) "\"\n\t" \
- "__mstrtab_" __stringify(channel) "_" __stringify(name) "_name_" __stringify(unique) ":\n\t" \
- ".string \"" __stringify(name) "\"\n\t" \
- "__mstrtab_" __stringify(channel) "_" __stringify(name) "_format_" __stringify(unique) ":\n\t" \
- ".string " "\"" format "\"" "\n\t" \
- ".previous\n\t" \
- ".endif\n\t" \
+ asm volatile ( \
+ /* We only define these symbols if they have not yet been defined. Indeed, \
+ * if two markers with the same channel/name are on the same line, they \
+ * will try to create the same symbols, resulting in a conflict. This \
+ * is not unusual as it can be the result of function inlining. \
+ */ \
+ ".ifndef __mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) "\n\t" \
+ /*".section __markers_strings\n\t"*/ \
+ ".section __markers_strings,\"aw\",@progbits\n\t" \
+ "__mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) ":\n\t" \
+ ".string \"" __stringify(channel) "\"\n\t" \
+ "__mstrtab_" __stringify(channel) "_" __stringify(name) "_name_" __stringify(unique) ":\n\t" \
+ ".string \"" __stringify(name) "\"\n\t" \
+ "__mstrtab_" __stringify(channel) "_" __stringify(name) "_format_" __stringify(unique) ":\n\t" \
+ ".string " "\"" format "\"" "\n\t" \
+ ".previous\n\t" \
+ ".endif\n\t" \
); \
asm volatile ( \
- /*".section __markers\n\t"*/ \
- ".section __markers,\"aw\",@progbits\n\t" \
- ".balign 8\n\t" \
- "2:\n\t" \
- _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) ")\n\t" /* channel string */ \
- _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_name_" __stringify(unique) ")\n\t" /* name string */ \
- _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_format_" __stringify(unique) ")\n\t" /* format string */ \
- ".byte 0\n\t" /* state imv */ \
- ".byte 0\n\t" /* ptype */ \
- ".word 0\n\t" /* channel_id */ \
- ".word 0\n\t" /* event_id */ \
- ".balign " __stringify(__WORDSIZE) " / 8\n\t" /* alignment */ \
- _ASM_PTR "(marker_probe_cb)\n\t" /* call */ \
- _ASM_PTR "(__mark_empty_function)\n\t" /* marker_probe_closure single.field1 */ \
- _ASM_PTR "0\n\t" /* marker_probe_closure single.field2 */ \
- _ASM_PTR "0\n\t" /* marker_probe_closure *multi */ \
- _ASM_PTR "0\n\t" /* tp_name */ \
- _ASM_PTR "0\n\t" /* tp_cb */ \
- _ASM_PTR "(1f)\n\t" /* location */ \
- ".previous\n\t" \
- "1:\n\t" \
- ARCH_COPY_ADDR("%[outptr]") \
+ /*".section __markers\n\t"*/ \
+ ".section __markers,\"aw\",@progbits\n\t" \
+ ".balign 8\n\t" \
+ "2:\n\t" \
+ _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_channel_" __stringify(unique) ")\n\t" /* channel string */ \
+ _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_name_" __stringify(unique) ")\n\t" /* name string */ \
+ _ASM_PTR "(__mstrtab_" __stringify(channel) "_" __stringify(name) "_format_" __stringify(unique) ")\n\t" /* format string */ \
+ ".byte 0\n\t" /* state imv */ \
+ ".byte 0\n\t" /* ptype */ \
+ ".word 0\n\t" /* channel_id */ \
+ ".word 0\n\t" /* event_id */ \
+ ".balign " __stringify(__WORDSIZE) " / 8\n\t" /* alignment */ \
+ _ASM_PTR "(marker_probe_cb)\n\t" /* call */ \
+ _ASM_PTR "(__mark_empty_function)\n\t" /* marker_probe_closure single.field1 */ \
+ _ASM_PTR "0\n\t" /* marker_probe_closure single.field2 */ \
+ _ASM_PTR "0\n\t" /* marker_probe_closure *multi */ \
+ _ASM_PTR "0\n\t" /* tp_name */ \
+ _ASM_PTR "0\n\t" /* tp_cb */ \
+ _ASM_PTR "(1f)\n\t" /* location */ \
+ ".previous\n\t" \
+ "1:\n\t" \
+ ARCH_COPY_ADDR("%[outptr]") \
: [outptr] "=r" (m) ); \
\
save_registers(®s)
__attribute__((section("__markers_strings"))) \
= #channel "\0" #name "\0" format; \
static struct marker GET_MARKER(channel, name) \
- __attribute__((section("__markers"), aligned(8))) = \
+ __attribute__((section("__markers"), aligned(128))) = \
{ __mstrtab_##channel##_##name, \
- &__mstrtab_##channel##_##name[sizeof(#channel)], \
- &__mstrtab_##channel##_##name[sizeof(#channel) + \
- sizeof(#name)], \
- 0, 0, 0, 0, marker_probe_cb, \
- { __mark_empty_function, NULL}, \
- NULL, tp_name_str, tp_cb }
+ &__mstrtab_##channel##_##name[sizeof(#channel)], \
+ &__mstrtab_##channel##_##name[sizeof(#channel) + sizeof(#name)], \
+ 0, 0, 0, 0, marker_probe_cb, \
+ { __mark_empty_function, NULL}, \
+ NULL, tp_name_str, tp_cb }
/*
* Make sure the alignment of the structure in the __markers section will
extern void marker_update_probe_range(struct marker *begin,
struct marker *end);
-#else /* !CONFIG_MARKERS */
-#define DEFINE_MARKER(channel, name, tp_name, tp_cb, format, m)
-#define __trace_mark(generic, channel, name, call_private, format, args...) \
- __mark_check_format(format, ## args)
-#define __trace_mark_tp(channel, name, call_private, tp_name, tp_cb, \
- format, args...) \
- do { \
- void __check_tp_type(void) \
- { \
- register_trace_##tp_name(tp_cb, call_private); \
- } \
- __mark_check_format(format, ## args); \
- } while (0)
-static inline void marker_update_probe_range(struct marker *begin,
- struct marker *end)
-{ }
-#define GET_MARKER(channel, name)
-#endif /* CONFIG_MARKERS */
-
/**
* trace_mark - Marker using code patching
* @channel: marker channel (where to send the data), not quoted.
struct marker_addr *markers_addr_start;
#endif
int markers_count;
- struct list_head list;
+ struct cds_list_head list;
};
extern int marker_register_lib(struct marker *markers_start, int markers_count);
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