diff options
Diffstat (limited to 'src/udev/udev-trace.h')
| -rw-r--r-- | src/udev/udev-trace.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/udev/udev-trace.h b/src/udev/udev-trace.h new file mode 100644 index 0000000..5e94390 --- /dev/null +++ b/src/udev/udev-trace.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#if HAVE_SYS_SDT_H +#define SDT_USE_VARIADIC +#include <sys/sdt.h> + +#include "device-private.h" +#include "device-util.h" +#include "errno-util.h" + +/* Each trace point can have different number of additional arguments. Note that when the macro is used only + * additional arguments are listed in the macro invocation! + * + * Default arguments for each trace point are as follows: + * - arg0 - action + * - arg1 - sysname + * - arg2 - syspath + * - arg3 - subsystem + */ +#define DEVICE_TRACE_POINT(name, dev, ...) \ + do { \ + PROTECT_ERRNO; \ + const char *_n = NULL, *_p = NULL, *_s = NULL; \ + sd_device *_d = (dev); \ + sd_device_action_t _a = _SD_DEVICE_ACTION_INVALID; \ + (void) sd_device_get_action(_d, &_a); \ + (void) sd_device_get_sysname(_d, &_n); \ + (void) sd_device_get_syspath(_d, &_p); \ + (void) sd_device_get_subsystem(_d, &_s); \ + STAP_PROBEV(udev, name, device_action_to_string(_a), _n, _p, _s __VA_OPT__(,) __VA_ARGS__);\ + } while (false); +#else +#define DEVICE_TRACE_POINT(name, dev, ...) ((void) 0) +#endif |