trace_seq_puts(s, " : ");
}
-static const char state_to_char[] = TASK_STATE_TO_CHAR_STR;
-
-static int task_state_char(unsigned long state)
-{
- int bit = state ? __ffs(state) + 1 : 0;
-
- return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?';
-}
-
static void test_cpu_buff_start(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
struct trace_seq *s = &iter->seq;
unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK);
struct trace_entry *next_entry;
+ struct trace_event *event;
unsigned long verbose = (trace_flags & TRACE_ITER_VERBOSE);
struct trace_entry *entry = iter->ent;
unsigned long abs_usecs;
unsigned long rel_usecs;
u64 next_ts;
char *comm;
- int S, T;
- int i;
+ int ret;
test_cpu_buff_start(iter);
lat_print_generic(s, entry, cpu);
lat_print_timestamp(s, abs_usecs, rel_usecs);
}
- switch (entry->type) {
- case TRACE_FN: {
- struct ftrace_entry *field;
-
- trace_assign_type(field, entry);
-
- seq_print_ip_sym(s, field->ip, sym_flags);
- trace_seq_puts(s, " (");
- seq_print_ip_sym(s, field->parent_ip, sym_flags);
- trace_seq_puts(s, ")\n");
- break;
- }
- case TRACE_CTX:
- case TRACE_WAKE: {
- struct ctx_switch_entry *field;
-
- trace_assign_type(field, entry);
-
- T = task_state_char(field->next_state);
- S = task_state_char(field->prev_state);
- comm = trace_find_cmdline(field->next_pid);
- trace_seq_printf(s, " %5d:%3d:%c %s [%03d] %5d:%3d:%c %s\n",
- field->prev_pid,
- field->prev_prio,
- S, entry->type == TRACE_CTX ? "==>" : " +",
- field->next_cpu,
- field->next_pid,
- field->next_prio,
- T, comm);
- break;
- }
- case TRACE_SPECIAL: {
- struct special_entry *field;
-
- trace_assign_type(field, entry);
-
- trace_seq_printf(s, "# %ld %ld %ld\n",
- field->arg1,
- field->arg2,
- field->arg3);
- break;
- }
- case TRACE_STACK: {
- struct stack_entry *field;
-
- trace_assign_type(field, entry);
-
- for (i = 0; i < FTRACE_STACK_ENTRIES; i++) {
- if (i)
- trace_seq_puts(s, " <= ");
- seq_print_ip_sym(s, field->caller[i], sym_flags);
- }
- trace_seq_puts(s, "\n");
- break;
- }
- case TRACE_PRINT: {
- struct print_entry *field;
-
- trace_assign_type(field, entry);
- seq_print_ip_sym(s, field->ip, sym_flags);
- trace_seq_printf(s, ": %s", field->buf);
- break;
- }
- case TRACE_BRANCH: {
- struct trace_branch *field;
-
- trace_assign_type(field, entry);
-
- trace_seq_printf(s, "[%s] %s:%s:%d\n",
- field->correct ? " ok " : " MISS ",
- field->func,
- field->file,
- field->line);
- break;
+ event = ftrace_find_event(entry->type);
+ if (event && event->latency_trace) {
+ ret = event->latency_trace(s, entry, sym_flags);
+ if (ret)
+ return ret;
+ return TRACE_TYPE_HANDLED;
}
- case TRACE_USER_STACK: {
- struct userstack_entry *field;
- trace_assign_type(field, entry);
-
- seq_print_userip_objs(field, s, sym_flags);
- trace_seq_putc(s, '\n');
- break;
- }
- default:
- trace_seq_printf(s, "Unknown type %d\n", entry->type);
- }
+ trace_seq_printf(s, "Unknown type %d\n", entry->type);
return TRACE_TYPE_HANDLED;
}
struct trace_seq *s = &iter->seq;
unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK);
struct trace_entry *entry;
+ struct trace_event *event;
unsigned long usec_rem;
unsigned long long t;
unsigned long secs;
char *comm;
int ret;
- int S, T;
- int i;
entry = iter->ent;
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- switch (entry->type) {
- case TRACE_FN: {
- struct ftrace_entry *field;
-
- trace_assign_type(field, entry);
-
- ret = seq_print_ip_sym(s, field->ip, sym_flags);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- if ((sym_flags & TRACE_ITER_PRINT_PARENT) &&
- field->parent_ip) {
- ret = trace_seq_printf(s, " <-");
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- ret = seq_print_ip_sym(s,
- field->parent_ip,
- sym_flags);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- }
- ret = trace_seq_printf(s, "\n");
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_CTX:
- case TRACE_WAKE: {
- struct ctx_switch_entry *field;
-
- trace_assign_type(field, entry);
-
- T = task_state_char(field->next_state);
- S = task_state_char(field->prev_state);
- ret = trace_seq_printf(s, " %5d:%3d:%c %s [%03d] %5d:%3d:%c\n",
- field->prev_pid,
- field->prev_prio,
- S,
- entry->type == TRACE_CTX ? "==>" : " +",
- field->next_cpu,
- field->next_pid,
- field->next_prio,
- T);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_SPECIAL: {
- struct special_entry *field;
-
- trace_assign_type(field, entry);
-
- ret = trace_seq_printf(s, "# %ld %ld %ld\n",
- field->arg1,
- field->arg2,
- field->arg3);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_STACK: {
- struct stack_entry *field;
-
- trace_assign_type(field, entry);
-
- for (i = 0; i < FTRACE_STACK_ENTRIES; i++) {
- if (i) {
- ret = trace_seq_puts(s, " <= ");
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- }
- ret = seq_print_ip_sym(s, field->caller[i],
- sym_flags);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- }
- ret = trace_seq_puts(s, "\n");
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_PRINT: {
- struct print_entry *field;
-
- trace_assign_type(field, entry);
-
- seq_print_ip_sym(s, field->ip, sym_flags);
- trace_seq_printf(s, ": %s", field->buf);
- break;
- }
- case TRACE_GRAPH_RET: {
- return print_graph_function(iter);
- }
- case TRACE_GRAPH_ENT: {
- return print_graph_function(iter);
- }
- case TRACE_BRANCH: {
- struct trace_branch *field;
-
- trace_assign_type(field, entry);
-
- trace_seq_printf(s, "[%s] %s:%s:%d\n",
- field->correct ? " ok " : " MISS ",
- field->func,
- field->file,
- field->line);
- break;
+ event = ftrace_find_event(entry->type);
+ if (event && event->trace) {
+ ret = event->trace(s, entry, sym_flags);
+ if (ret)
+ return ret;
+ return TRACE_TYPE_HANDLED;
}
- case TRACE_USER_STACK: {
- struct userstack_entry *field;
-
- trace_assign_type(field, entry);
+ ret = trace_seq_printf(s, "Unknown type %d\n", entry->type);
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
- ret = seq_print_userip_objs(field, s, sym_flags);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- ret = trace_seq_putc(s, '\n');
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- }
return TRACE_TYPE_HANDLED;
}
{
struct trace_seq *s = &iter->seq;
struct trace_entry *entry;
+ struct trace_event *event;
int ret;
- int S, T;
entry = iter->ent;
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- switch (entry->type) {
- case TRACE_FN: {
- struct ftrace_entry *field;
-
- trace_assign_type(field, entry);
-
- ret = trace_seq_printf(s, "%x %x\n",
- field->ip,
- field->parent_ip);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_CTX:
- case TRACE_WAKE: {
- struct ctx_switch_entry *field;
-
- trace_assign_type(field, entry);
-
- T = task_state_char(field->next_state);
- S = entry->type == TRACE_WAKE ? '+' :
- task_state_char(field->prev_state);
- ret = trace_seq_printf(s, "%d %d %c %d %d %d %c\n",
- field->prev_pid,
- field->prev_prio,
- S,
- field->next_cpu,
- field->next_pid,
- field->next_prio,
- T);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
- }
- case TRACE_SPECIAL:
- case TRACE_USER_STACK:
- case TRACE_STACK: {
- struct special_entry *field;
-
- trace_assign_type(field, entry);
-
- ret = trace_seq_printf(s, "# %ld %ld %ld\n",
- field->arg1,
- field->arg2,
- field->arg3);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
- break;
+ event = ftrace_find_event(entry->type);
+ if (event && event->raw) {
+ ret = event->raw(s, entry, 0);
+ if (ret)
+ return ret;
+ return TRACE_TYPE_HANDLED;
}
- case TRACE_PRINT: {
- struct print_entry *field;
-
- trace_assign_type(field, entry);
+ ret = trace_seq_printf(s, "%d ?\n", entry->type);
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
- trace_seq_printf(s, "# %lx %s", field->ip, field->buf);
- break;
- }
- }
return TRACE_TYPE_HANDLED;
}
-#define SEQ_PUT_FIELD_RET(s, x) \
-do { \
- if (!trace_seq_putmem(s, &(x), sizeof(x))) \
- return 0; \
-} while (0)
-
-#define SEQ_PUT_HEX_FIELD_RET(s, x) \
-do { \
- BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \
- if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \
- return 0; \
-} while (0)
-
static enum print_line_t print_hex_fmt(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
unsigned char newline = '\n';
struct trace_entry *entry;
- int S, T;
+ struct trace_event *event;
entry = iter->ent;
SEQ_PUT_HEX_FIELD_RET(s, iter->cpu);
SEQ_PUT_HEX_FIELD_RET(s, iter->ts);
- switch (entry->type) {
- case TRACE_FN: {
- struct ftrace_entry *field;
-
- trace_assign_type(field, entry);
-
- SEQ_PUT_HEX_FIELD_RET(s, field->ip);
- SEQ_PUT_HEX_FIELD_RET(s, field->parent_ip);
- break;
- }
- case TRACE_CTX:
- case TRACE_WAKE: {
- struct ctx_switch_entry *field;
-
- trace_assign_type(field, entry);
-
- T = task_state_char(field->next_state);
- S = entry->type == TRACE_WAKE ? '+' :
- task_state_char(field->prev_state);
- SEQ_PUT_HEX_FIELD_RET(s, field->prev_pid);
- SEQ_PUT_HEX_FIELD_RET(s, field->prev_prio);
- SEQ_PUT_HEX_FIELD_RET(s, S);
- SEQ_PUT_HEX_FIELD_RET(s, field->next_cpu);
- SEQ_PUT_HEX_FIELD_RET(s, field->next_pid);
- SEQ_PUT_HEX_FIELD_RET(s, field->next_prio);
- SEQ_PUT_HEX_FIELD_RET(s, T);
- break;
- }
- case TRACE_SPECIAL:
- case TRACE_USER_STACK:
- case TRACE_STACK: {
- struct special_entry *field;
-
- trace_assign_type(field, entry);
+ event = ftrace_find_event(entry->type);
+ if (event && event->hex)
+ event->hex(s, entry, 0);
- SEQ_PUT_HEX_FIELD_RET(s, field->arg1);
- SEQ_PUT_HEX_FIELD_RET(s, field->arg2);
- SEQ_PUT_HEX_FIELD_RET(s, field->arg3);
- break;
- }
- }
SEQ_PUT_FIELD_RET(s, newline);
return TRACE_TYPE_HANDLED;
{
struct trace_seq *s = &iter->seq;
struct trace_entry *entry;
+ struct trace_event *event;
entry = iter->ent;
SEQ_PUT_FIELD_RET(s, entry->cpu);
SEQ_PUT_FIELD_RET(s, iter->ts);
- switch (entry->type) {
- case TRACE_FN: {
- struct ftrace_entry *field;
-
- trace_assign_type(field, entry);
+ event = ftrace_find_event(entry->type);
+ if (event && event->binary)
+ event->binary(s, entry, 0);
- SEQ_PUT_FIELD_RET(s, field->ip);
- SEQ_PUT_FIELD_RET(s, field->parent_ip);
- break;
- }
- case TRACE_CTX: {
- struct ctx_switch_entry *field;
-
- trace_assign_type(field, entry);
-
- SEQ_PUT_FIELD_RET(s, field->prev_pid);
- SEQ_PUT_FIELD_RET(s, field->prev_prio);
- SEQ_PUT_FIELD_RET(s, field->prev_state);
- SEQ_PUT_FIELD_RET(s, field->next_pid);
- SEQ_PUT_FIELD_RET(s, field->next_prio);
- SEQ_PUT_FIELD_RET(s, field->next_state);
- break;
- }
- case TRACE_SPECIAL:
- case TRACE_USER_STACK:
- case TRACE_STACK: {
- struct special_entry *field;
-
- trace_assign_type(field, entry);
-
- SEQ_PUT_FIELD_RET(s, field->arg1);
- SEQ_PUT_FIELD_RET(s, field->arg2);
- SEQ_PUT_FIELD_RET(s, field->arg3);
- break;
- }
- }
- return 1;
+ return TRACE_TYPE_HANDLED;
}
static int trace_empty(struct trace_iterator *iter)
#include <linux/hash.h>
#include <linux/fs.h>
#include <asm/local.h>
+
#include "trace.h"
+#include "trace_output.h"
#ifdef CONFIG_BRANCH_TRACER
stop_branch_trace(tr);
}
+static int
+trace_print_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct print_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (seq_print_ip_sym(s, field->ip, flags))
+ goto partial;
+
+ if (trace_seq_printf(s, ": %s", field->buf))
+ goto partial;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static int
+trace_branch_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct trace_branch *field;
+
+ trace_assign_type(field, entry);
+
+ if (trace_seq_printf(s, "[%s] %s:%s:%d\n",
+ field->correct ? " ok " : " MISS ",
+ field->func,
+ field->file,
+ field->line))
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return 0;
+}
+
+static struct trace_event trace_branch_event = {
+ .type = TRACE_BRANCH,
+ .trace = trace_branch_print,
+ .latency_trace = trace_branch_print,
+ .raw = trace_nop_print,
+ .hex = trace_nop_print,
+ .binary = trace_nop_print,
+};
+
struct tracer branch_trace __read_mostly =
{
.name = "branch",
__init static int init_branch_trace(void)
{
+ int ret;
+
+ ret = register_ftrace_event(&trace_branch_event);
+ if (!ret) {
+ printk(KERN_WARNING "Warning: could not register branch events\n");
+ return 1;
+ }
+
return register_tracer(&branch_trace);
}
return ret;
}
+static const char state_to_char[] = TASK_STATE_TO_CHAR_STR;
+
+static int task_state_char(unsigned long state)
+{
+ int bit = state ? __ffs(state) + 1 : 0;
+
+ return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?';
+}
+
/**
* ftrace_find_event - find a registered event
* @type: the type of event to look for
return 0;
}
+
+/*
+ * Standard events
+ */
+
+int
+trace_nop_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return 0;
+}
+
+/* TRACE_FN */
+static int
+trace_fn_latency(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ftrace_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (!seq_print_ip_sym(s, field->ip, flags))
+ goto partial;
+ if (!trace_seq_puts(s, " ("))
+ goto partial;
+ if (!seq_print_ip_sym(s, field->parent_ip, flags))
+ goto partial;
+ if (!trace_seq_puts(s, ")\n"))
+ goto partial;
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static int
+trace_fn_trace(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ftrace_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (!seq_print_ip_sym(s, field->ip, flags))
+ goto partial;
+
+ if ((flags & TRACE_ITER_PRINT_PARENT) && field->parent_ip) {
+ if (!trace_seq_printf(s, " <-"))
+ goto partial;
+ if (!seq_print_ip_sym(s,
+ field->parent_ip,
+ flags))
+ goto partial;
+ }
+ if (!trace_seq_printf(s, "\n"))
+ goto partial;
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static int
+trace_fn_raw(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ftrace_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (trace_seq_printf(s, "%x %x\n",
+ field->ip,
+ field->parent_ip))
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return 0;
+}
+
+static int
+trace_fn_hex(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ftrace_entry *field;
+
+ trace_assign_type(field, entry);
+
+ SEQ_PUT_HEX_FIELD_RET(s, field->ip);
+ SEQ_PUT_HEX_FIELD_RET(s, field->parent_ip);
+
+ return 0;
+}
+
+static int
+trace_fn_bin(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ftrace_entry *field;
+
+ trace_assign_type(field, entry);
+
+ SEQ_PUT_FIELD_RET(s, field->ip);
+ SEQ_PUT_FIELD_RET(s, field->parent_ip);
+
+ return 0;
+}
+
+static struct trace_event trace_fn_event = {
+ .type = TRACE_FN,
+ .trace = trace_fn_trace,
+ .latency_trace = trace_fn_latency,
+ .raw = trace_fn_raw,
+ .hex = trace_fn_hex,
+ .binary = trace_fn_bin,
+};
+
+/* TRACE_CTX an TRACE_WAKE */
+static int
+trace_ctxwake_print(struct trace_seq *s, struct trace_entry *entry, int flags,
+ char *delim)
+{
+ struct ctx_switch_entry *field;
+ char *comm;
+ int S, T;
+
+ trace_assign_type(field, entry);
+
+ T = task_state_char(field->next_state);
+ S = task_state_char(field->prev_state);
+ comm = trace_find_cmdline(field->next_pid);
+ if (trace_seq_printf(s, " %5d:%3d:%c %s [%03d] %5d:%3d:%c %s\n",
+ field->prev_pid,
+ field->prev_prio,
+ S, delim,
+ field->next_cpu,
+ field->next_pid,
+ field->next_prio,
+ T, comm))
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return 0;
+}
+
+static int
+trace_ctx_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_print(s, entry, flags, "==>");
+}
+
+static int
+trace_wake_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_print(s, entry, flags, " +");
+}
+
+static int
+trace_ctxwake_raw(struct trace_seq *s, struct trace_entry *entry, int flags,
+ char S)
+{
+ struct ctx_switch_entry *field;
+ int T;
+
+ trace_assign_type(field, entry);
+
+ if (!S)
+ task_state_char(field->prev_state);
+ T = task_state_char(field->next_state);
+ if (trace_seq_printf(s, "%d %d %c %d %d %d %c\n",
+ field->prev_pid,
+ field->prev_prio,
+ S,
+ field->next_cpu,
+ field->next_pid,
+ field->next_prio,
+ T))
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return 0;
+}
+
+static int
+trace_ctx_raw(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_raw(s, entry, flags, 0);
+}
+
+static int
+trace_wake_raw(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_raw(s, entry, flags, '+');
+}
+
+
+static int
+trace_ctxwake_hex(struct trace_seq *s, struct trace_entry *entry, int flags,
+ char S)
+{
+ struct ctx_switch_entry *field;
+ int T;
+
+ trace_assign_type(field, entry);
+
+ if (!S)
+ task_state_char(field->prev_state);
+ T = task_state_char(field->next_state);
+
+ SEQ_PUT_HEX_FIELD_RET(s, field->prev_pid);
+ SEQ_PUT_HEX_FIELD_RET(s, field->prev_prio);
+ SEQ_PUT_HEX_FIELD_RET(s, S);
+ SEQ_PUT_HEX_FIELD_RET(s, field->next_cpu);
+ SEQ_PUT_HEX_FIELD_RET(s, field->next_pid);
+ SEQ_PUT_HEX_FIELD_RET(s, field->next_prio);
+ SEQ_PUT_HEX_FIELD_RET(s, T);
+
+ return 0;
+}
+
+static int
+trace_ctx_hex(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_hex(s, entry, flags, 0);
+}
+
+static int
+trace_wake_hex(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ return trace_ctxwake_hex(s, entry, flags, '+');
+}
+
+static int
+trace_ctxwake_bin(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct ctx_switch_entry *field;
+
+ trace_assign_type(field, entry);
+
+ SEQ_PUT_FIELD_RET(s, field->prev_pid);
+ SEQ_PUT_FIELD_RET(s, field->prev_prio);
+ SEQ_PUT_FIELD_RET(s, field->prev_state);
+ SEQ_PUT_FIELD_RET(s, field->next_pid);
+ SEQ_PUT_FIELD_RET(s, field->next_prio);
+ SEQ_PUT_FIELD_RET(s, field->next_state);
+
+ return 0;
+}
+
+static struct trace_event trace_ctx_event = {
+ .type = TRACE_CTX,
+ .trace = trace_ctx_print,
+ .latency_trace = trace_ctx_print,
+ .raw = trace_ctx_raw,
+ .hex = trace_ctx_hex,
+ .binary = trace_ctxwake_bin,
+};
+
+static struct trace_event trace_wake_event = {
+ .type = TRACE_WAKE,
+ .trace = trace_wake_print,
+ .latency_trace = trace_wake_print,
+ .raw = trace_wake_raw,
+ .hex = trace_wake_hex,
+ .binary = trace_ctxwake_bin,
+};
+
+/* TRACE_SPECIAL */
+static int
+trace_special_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct special_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (trace_seq_printf(s, "# %ld %ld %ld\n",
+ field->arg1,
+ field->arg2,
+ field->arg3))
+ return TRACE_TYPE_PARTIAL_LINE;
+
+ return 0;
+}
+
+static int
+trace_special_hex(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct special_entry *field;
+
+ trace_assign_type(field, entry);
+
+ SEQ_PUT_HEX_FIELD_RET(s, field->arg1);
+ SEQ_PUT_HEX_FIELD_RET(s, field->arg2);
+ SEQ_PUT_HEX_FIELD_RET(s, field->arg3);
+
+ return 0;
+}
+
+static int
+trace_special_bin(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct special_entry *field;
+
+ trace_assign_type(field, entry);
+
+ SEQ_PUT_FIELD_RET(s, field->arg1);
+ SEQ_PUT_FIELD_RET(s, field->arg2);
+ SEQ_PUT_FIELD_RET(s, field->arg3);
+
+ return 0;
+}
+
+static struct trace_event trace_special_event = {
+ .type = TRACE_SPECIAL,
+ .trace = trace_special_print,
+ .latency_trace = trace_special_print,
+ .raw = trace_special_print,
+ .hex = trace_special_hex,
+ .binary = trace_special_bin,
+};
+
+/* TRACE_STACK */
+
+static int
+trace_stack_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct stack_entry *field;
+ int i;
+
+ trace_assign_type(field, entry);
+
+ for (i = 0; i < FTRACE_STACK_ENTRIES; i++) {
+ if (i) {
+ if (trace_seq_puts(s, " <= "))
+ goto partial;
+
+ if (seq_print_ip_sym(s, field->caller[i], flags))
+ goto partial;
+ }
+ if (trace_seq_puts(s, "\n"))
+ goto partial;
+ }
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static struct trace_event trace_stack_event = {
+ .type = TRACE_STACK,
+ .trace = trace_stack_print,
+ .latency_trace = trace_stack_print,
+ .raw = trace_special_print,
+ .hex = trace_special_hex,
+ .binary = trace_special_bin,
+};
+
+/* TRACE_USER_STACK */
+static int
+trace_user_stack_print(struct trace_seq *s, struct trace_entry *entry,
+ int flags)
+{
+ struct userstack_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (seq_print_userip_objs(field, s, flags))
+ goto partial;
+
+ if (trace_seq_putc(s, '\n'))
+ goto partial;
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static struct trace_event trace_user_stack_event = {
+ .type = TRACE_USER_STACK,
+ .trace = trace_user_stack_print,
+ .latency_trace = trace_user_stack_print,
+ .raw = trace_special_print,
+ .hex = trace_special_hex,
+ .binary = trace_special_bin,
+};
+
+/* TRACE_PRINT */
+static int
+trace_print_print(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct print_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (seq_print_ip_sym(s, field->ip, flags))
+ goto partial;
+
+ if (trace_seq_printf(s, ": %s", field->buf))
+ goto partial;
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static int
+trace_print_raw(struct trace_seq *s, struct trace_entry *entry, int flags)
+{
+ struct print_entry *field;
+
+ trace_assign_type(field, entry);
+
+ if (seq_print_ip_sym(s, field->ip, flags))
+ goto partial;
+
+ if (trace_seq_printf(s, "# %lx %s", field->ip, field->buf))
+ goto partial;
+
+ return 0;
+
+ partial:
+ return TRACE_TYPE_PARTIAL_LINE;
+}
+
+static struct trace_event trace_print_event = {
+ .type = TRACE_PRINT,
+ .trace = trace_print_print,
+ .latency_trace = trace_print_print,
+ .raw = trace_print_raw,
+ .hex = trace_nop_print,
+ .binary = trace_nop_print,
+};
+
+static struct trace_event *events[] __initdata = {
+ &trace_fn_event,
+ &trace_ctx_event,
+ &trace_wake_event,
+ &trace_special_event,
+ &trace_stack_event,
+ &trace_user_stack_event,
+ &trace_print_event,
+ NULL
+};
+
+__init static int init_events(void)
+{
+ struct trace_event *event;
+ int i, ret;
+
+ for (i = 0; events[i]; i++) {
+ event = events[i];
+
+ ret = register_ftrace_event(event);
+ if (!ret) {
+ printk(KERN_WARNING "event %d failed to register\n",
+ event->type);
+ WARN_ON_ONCE(1);
+ }
+ }
+
+ return 0;
+}
+device_initcall(init_events);
int register_ftrace_event(struct trace_event *event);
int unregister_ftrace_event(struct trace_event *event);
+int
+trace_nop_print(struct trace_seq *s, struct trace_entry *entry, int flags);
+
#define MAX_MEMHEX_BYTES 8
#define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1)
+#define SEQ_PUT_FIELD_RET(s, x) \
+do { \
+ if (!trace_seq_putmem(s, &(x), sizeof(x))) \
+ return 0; \
+} while (0)
+
+#define SEQ_PUT_HEX_FIELD_RET(s, x) \
+do { \
+ BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \
+ if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \
+ return 0; \
+} while (0)
+
#endif
projects / karo-tx-linux.git / commitdiff