lttng: cleanup one-bit signed bitfields

[lttng-modules.git] / ltt-debugfs-abi.h

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index e5ddcfa0965ded2110b8c2bfa12aa04c6c763272..a018297f7fb513f12951f29103ebbf078eb62999 100644 (file)
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -13,12 +13,15 @@
 
 #include <linux/fs.h>
 
-#define LTTNG_SYM_NAME_LEN     128
+#define LTTNG_SYM_NAME_LEN     256
 
 enum lttng_kernel_instrumentation {
        LTTNG_KERNEL_TRACEPOINT = 0,
        LTTNG_KERNEL_KPROBE     = 1,
        LTTNG_KERNEL_FUNCTION   = 2,
+       LTTNG_KERNEL_KRETPROBE  = 3,
+       LTTNG_KERNEL_NOOP       = 4,    /* not hooked */
+       LTTNG_KERNEL_SYSCALL    = 5,
 };
 
 /*
@@ -42,6 +45,13 @@ struct lttng_kernel_channel {
        enum lttng_kernel_output output;        /* splice, mmap */
 };
 
+struct lttng_kernel_kretprobe {
+       uint64_t addr;
+
+       uint64_t offset;
+       char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
 /*
  * Either addr is used, or symbol_name and offset.
  */
@@ -56,11 +66,15 @@ struct lttng_kernel_function_tracer {
        char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
+/*
+ * For syscall tracing, name = '\0' means "enable all".
+ */
 struct lttng_kernel_event {
        char name[LTTNG_SYM_NAME_LEN];  /* event name */
        enum lttng_kernel_instrumentation instrumentation;
        /* Per instrumentation type configuration */
        union {
+               struct lttng_kernel_kretprobe kretprobe;
                struct lttng_kernel_kprobe kprobe;
                struct lttng_kernel_function_tracer ftrace;
        } u;
@@ -72,10 +86,18 @@ struct lttng_kernel_tracer_version {
        uint32_t sublevel;
 };
 
+enum lttng_kernel_calibrate_type {
+       LTTNG_KERNEL_CALIBRATE_KRETPROBE,
+};
+
+struct lttng_kernel_calibrate {
+       enum lttng_kernel_calibrate_type type;  /* type (input) */
+};
+
 enum lttng_kernel_context_type {
        LTTNG_KERNEL_CONTEXT_PID                = 0,
        LTTNG_KERNEL_CONTEXT_PERF_COUNTER       = 1,
-       LTTNG_KERNEL_CONTEXT_COMM               = 2,
+       LTTNG_KERNEL_CONTEXT_PROCNAME           = 2,
        LTTNG_KERNEL_CONTEXT_PRIO               = 3,
        LTTNG_KERNEL_CONTEXT_NICE               = 4,
        LTTNG_KERNEL_CONTEXT_VPID               = 5,
@@ -104,6 +126,8 @@ struct lttng_kernel_context {
        _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
 #define LTTNG_KERNEL_TRACEPOINT_LIST           _IO(0xF6, 0x42)
 #define LTTNG_KERNEL_WAIT_QUIESCENT            _IO(0xF6, 0x43)
+#define LTTNG_KERNEL_CALIBRATE                 \
+       _IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
 
 /* Session FD ioctl */
 #define LTTNG_KERNEL_METADATA                  \