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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - tools/perf/util/debug.c
1 /* For general debugging purposes */
10 #include <api/debug.h>
11 #include <linux/time64.h>
12 #ifdef HAVE_BACKTRACE_SUPPORT
19 #include "print_binary.h"
23 #include "sane_ctype.h"
26 bool dump_trace
= false, quiet
= false;
27 int debug_ordered_events
;
28 static int redirect_to_stderr
;
29 int debug_data_convert
;
31 int veprintf(int level
, int var
, const char *fmt
, va_list args
)
36 if (use_browser
>= 1 && !redirect_to_stderr
)
37 ui_helpline__vshow(fmt
, args
);
39 ret
= vfprintf(stderr
, fmt
, args
);
45 int eprintf(int level
, int var
, const char *fmt
, ...)
51 ret
= veprintf(level
, var
, fmt
, args
);
57 static int veprintf_time(u64 t
, const char *fmt
, va_list args
)
60 u64 secs
, usecs
, nsecs
= t
;
62 secs
= nsecs
/ NSEC_PER_SEC
;
63 nsecs
-= secs
* NSEC_PER_SEC
;
64 usecs
= nsecs
/ NSEC_PER_USEC
;
66 ret
= fprintf(stderr
, "[%13" PRIu64
".%06" PRIu64
"] ",
68 ret
+= vfprintf(stderr
, fmt
, args
);
72 int eprintf_time(int level
, int var
, u64 t
, const char *fmt
, ...)
79 ret
= veprintf_time(t
, fmt
, args
);
87 * Overloading libtraceevent standard info print
88 * function, display with -v in perf.
90 void pr_stat(const char *fmt
, ...)
95 veprintf(1, verbose
, fmt
, args
);
97 eprintf(1, verbose
, "\n");
100 int dump_printf(const char *fmt
, ...)
107 ret
= vprintf(fmt
, args
);
114 static void trace_event_printer(enum binary_printer_ops op
,
115 unsigned int val
, void *extra
)
117 const char *color
= PERF_COLOR_BLUE
;
118 union perf_event
*event
= (union perf_event
*)extra
;
119 unsigned char ch
= (unsigned char)val
;
122 case BINARY_PRINT_DATA_BEGIN
:
124 color_fprintf(stdout
, color
, "\n. ... raw event: size %d bytes\n",
127 case BINARY_PRINT_LINE_BEGIN
:
130 case BINARY_PRINT_ADDR
:
131 color_fprintf(stdout
, color
, " %04x: ", val
);
133 case BINARY_PRINT_NUM_DATA
:
134 color_fprintf(stdout
, color
, " %02x", val
);
136 case BINARY_PRINT_NUM_PAD
:
137 color_fprintf(stdout
, color
, " ");
139 case BINARY_PRINT_SEP
:
140 color_fprintf(stdout
, color
, " ");
142 case BINARY_PRINT_CHAR_DATA
:
143 color_fprintf(stdout
, color
, "%c",
144 isprint(ch
) ? ch
: '.');
146 case BINARY_PRINT_CHAR_PAD
:
147 color_fprintf(stdout
, color
, " ");
149 case BINARY_PRINT_LINE_END
:
150 color_fprintf(stdout
, color
, "\n");
152 case BINARY_PRINT_DATA_END
:
160 void trace_event(union perf_event
*event
)
162 unsigned char *raw_event
= (void *)event
;
167 print_binary(raw_event
, event
->header
.size
, 16,
168 trace_event_printer
, event
);
171 static struct debug_variable
{
174 } debug_variables
[] = {
175 { .name
= "verbose", .ptr
= &verbose
},
176 { .name
= "ordered-events", .ptr
= &debug_ordered_events
},
177 { .name
= "stderr", .ptr
= &redirect_to_stderr
},
178 { .name
= "data-convert", .ptr
= &debug_data_convert
},
182 int perf_debug_option(const char *str
)
184 struct debug_variable
*var
= &debug_variables
[0];
185 char *vstr
, *s
= strdup(str
);
188 vstr
= strchr(s
, '=');
193 if (!strcmp(s
, var
->name
))
199 pr_err("Unknown debug variable name '%s'\n", s
);
207 * Allow only values in range (0, 10),
210 v
= (v
< 0) || (v
> 10) ? 0 : v
;
221 int perf_quiet_option(void)
223 struct debug_variable
*var
= &debug_variables
[0];
225 /* disable all debug messages */
235 #define DEBUG_WRAPPER(__n, __l) \
236 static int pr_ ## __n ## _wrapper(const char *fmt, ...) \
241 va_start(args, fmt); \
242 ret = veprintf(__l, verbose, fmt, args); \
247 DEBUG_WRAPPER(warning
, 0);
248 DEBUG_WRAPPER(debug
, 1);
250 void perf_debug_setup(void)
252 libapi_set_print(pr_warning_wrapper
, pr_warning_wrapper
, pr_debug_wrapper
);
255 /* Obtain a backtrace and print it to stdout. */
256 #ifdef HAVE_BACKTRACE_SUPPORT
257 void dump_stack(void)
260 size_t size
= backtrace(array
, ARRAY_SIZE(array
));
261 char **strings
= backtrace_symbols(array
, size
);
264 printf("Obtained %zd stack frames.\n", size
);
266 for (i
= 0; i
< size
; i
++)
267 printf("%s\n", strings
[i
]);
272 void dump_stack(void) {}
275 void sighandler_dump_stack(int sig
)
277 psignal(sig
, "perf");
279 signal(sig
, SIG_DFL
);