From ce1a9db4e5d39db02e1421576884a5322fba4ed8 Mon Sep 17 00:00:00 2001 From: Bernd Petrovitsch Date: Tue, 17 Aug 2010 12:22:08 -0300 Subject: [PATCH] --- yaml --- r: 209621 b: refs/heads/master c: 033a273f9836b592dd568abd0f655be469d66704 h: refs/heads/master i: 209619: 3120120df3ac81be676f7ed5b1be13ddcaf191a5 v: v3 --- [refs] | 2 +- trunk/kernel/trace/ring_buffer.c | 3 - trunk/kernel/trace/trace.c | 11 +- trunk/kernel/trace/trace_events.c | 207 +++++++-------------- trunk/kernel/trace/trace_functions_graph.c | 10 +- trunk/lib/Kconfig.debug | 5 +- trunk/scripts/recordmcount.pl | 7 +- trunk/tools/perf/Makefile | 16 +- 8 files changed, 81 insertions(+), 180 deletions(-) diff --git a/[refs] b/[refs] index ea6fcd92fd95..4008e0eb32a2 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 625fdcaa6d2a3db6a922bbd833450424e906111c +refs/heads/master: 033a273f9836b592dd568abd0f655be469d66704 diff --git a/trunk/kernel/trace/ring_buffer.c b/trunk/kernel/trace/ring_buffer.c index 19cccc3c3028..3632ce87674f 100644 --- a/trunk/kernel/trace/ring_buffer.c +++ b/trunk/kernel/trace/ring_buffer.c @@ -3846,9 +3846,6 @@ int ring_buffer_read_page(struct ring_buffer *buffer, rpos = reader->read; pos += size; - if (rpos >= commit) - break; - event = rb_reader_event(cpu_buffer); size = rb_event_length(event); } while (len > size); diff --git a/trunk/kernel/trace/trace.c b/trunk/kernel/trace/trace.c index 9ec59f541156..ba14a22be4cc 100644 --- a/trunk/kernel/trace/trace.c +++ b/trunk/kernel/trace/trace.c @@ -3463,7 +3463,6 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *fpos) { char *buf; - size_t written; if (tracing_disabled) return -EINVAL; @@ -3485,15 +3484,11 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, } else buf[cnt] = '\0'; - written = mark_printk("%s", buf); + cnt = mark_printk("%s", buf); kfree(buf); - *fpos += written; - - /* don't tell userspace we wrote more - it might confuse them */ - if (written > cnt) - written = cnt; + *fpos += cnt; - return written; + return cnt; } static int tracing_clock_show(struct seq_file *m, void *v) diff --git a/trunk/kernel/trace/trace_events.c b/trunk/kernel/trace/trace_events.c index 4c758f146328..09b4fa6e4d3b 100644 --- a/trunk/kernel/trace/trace_events.c +++ b/trunk/kernel/trace/trace_events.c @@ -598,165 +598,88 @@ system_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, return ret; } -enum { - FORMAT_HEADER = 1, - FORMAT_PRINTFMT = 2, -}; - -static void *f_next(struct seq_file *m, void *v, loff_t *pos) +static void print_event_fields(struct trace_seq *s, struct list_head *head) { - struct ftrace_event_call *call = m->private; struct ftrace_event_field *field; - struct list_head *head; - - (*pos)++; - - switch ((unsigned long)v) { - case FORMAT_HEADER: - head = &ftrace_common_fields; - - if (unlikely(list_empty(head))) - return NULL; - - field = list_entry(head->prev, struct ftrace_event_field, link); - return field; - - case FORMAT_PRINTFMT: - /* all done */ - return NULL; - } - head = trace_get_fields(call); + list_for_each_entry_reverse(field, head, link) { + /* + * Smartly shows the array type(except dynamic array). + * Normal: + * field:TYPE VAR + * If TYPE := TYPE[LEN], it is shown: + * field:TYPE VAR[LEN] + */ + const char *array_descriptor = strchr(field->type, '['); - /* - * To separate common fields from event fields, the - * LSB is set on the first event field. Clear it in case. - */ - v = (void *)((unsigned long)v & ~1L); + if (!strncmp(field->type, "__data_loc", 10)) + array_descriptor = NULL; - field = v; - /* - * If this is a common field, and at the end of the list, then - * continue with main list. - */ - if (field->link.prev == &ftrace_common_fields) { - if (unlikely(list_empty(head))) - return NULL; - field = list_entry(head->prev, struct ftrace_event_field, link); - /* Set the LSB to notify f_show to print an extra newline */ - field = (struct ftrace_event_field *) - ((unsigned long)field | 1); - return field; + if (!array_descriptor) { + trace_seq_printf(s, "\tfield:%s %s;\toffset:%u;" + "\tsize:%u;\tsigned:%d;\n", + field->type, field->name, field->offset, + field->size, !!field->is_signed); + } else { + trace_seq_printf(s, "\tfield:%.*s %s%s;\toffset:%u;" + "\tsize:%u;\tsigned:%d;\n", + (int)(array_descriptor - field->type), + field->type, field->name, + array_descriptor, field->offset, + field->size, !!field->is_signed); + } } - - /* If we are done tell f_show to print the format */ - if (field->link.prev == head) - return (void *)FORMAT_PRINTFMT; - - field = list_entry(field->link.prev, struct ftrace_event_field, link); - - return field; -} - -static void *f_start(struct seq_file *m, loff_t *pos) -{ - loff_t l = 0; - void *p; - - /* Start by showing the header */ - if (!*pos) - return (void *)FORMAT_HEADER; - - p = (void *)FORMAT_HEADER; - do { - p = f_next(m, p, &l); - } while (p && l < *pos); - - return p; } -static int f_show(struct seq_file *m, void *v) +static ssize_t +event_format_read(struct file *filp, char __user *ubuf, size_t cnt, + loff_t *ppos) { - struct ftrace_event_call *call = m->private; - struct ftrace_event_field *field; - const char *array_descriptor; - - switch ((unsigned long)v) { - case FORMAT_HEADER: - seq_printf(m, "name: %s\n", call->name); - seq_printf(m, "ID: %d\n", call->event.type); - seq_printf(m, "format:\n"); - return 0; + struct ftrace_event_call *call = filp->private_data; + struct list_head *head; + struct trace_seq *s; + char *buf; + int r; - case FORMAT_PRINTFMT: - seq_printf(m, "\nprint fmt: %s\n", - call->print_fmt); + if (*ppos) return 0; - } - - /* - * To separate common fields from event fields, the - * LSB is set on the first event field. Clear it and - * print a newline if it is set. - */ - if ((unsigned long)v & 1) { - seq_putc(m, '\n'); - v = (void *)((unsigned long)v & ~1L); - } - - field = v; - - /* - * Smartly shows the array type(except dynamic array). - * Normal: - * field:TYPE VAR - * If TYPE := TYPE[LEN], it is shown: - * field:TYPE VAR[LEN] - */ - array_descriptor = strchr(field->type, '['); - if (!strncmp(field->type, "__data_loc", 10)) - array_descriptor = NULL; + s = kmalloc(sizeof(*s), GFP_KERNEL); + if (!s) + return -ENOMEM; - if (!array_descriptor) - seq_printf(m, "\tfield:%s %s;\toffset:%u;\tsize:%u;\tsigned:%d;\n", - field->type, field->name, field->offset, - field->size, !!field->is_signed); - else - seq_printf(m, "\tfield:%.*s %s%s;\toffset:%u;\tsize:%u;\tsigned:%d;\n", - (int)(array_descriptor - field->type), - field->type, field->name, - array_descriptor, field->offset, - field->size, !!field->is_signed); + trace_seq_init(s); - return 0; -} + trace_seq_printf(s, "name: %s\n", call->name); + trace_seq_printf(s, "ID: %d\n", call->event.type); + trace_seq_printf(s, "format:\n"); -static void f_stop(struct seq_file *m, void *p) -{ -} + /* print common fields */ + print_event_fields(s, &ftrace_common_fields); -static const struct seq_operations trace_format_seq_ops = { - .start = f_start, - .next = f_next, - .stop = f_stop, - .show = f_show, -}; + trace_seq_putc(s, '\n'); -static int trace_format_open(struct inode *inode, struct file *file) -{ - struct ftrace_event_call *call = inode->i_private; - struct seq_file *m; - int ret; + /* print event specific fields */ + head = trace_get_fields(call); + print_event_fields(s, head); - ret = seq_open(file, &trace_format_seq_ops); - if (ret < 0) - return ret; + r = trace_seq_printf(s, "\nprint fmt: %s\n", call->print_fmt); - m = file->private_data; - m->private = call; + if (!r) { + /* + * ug! The format output is bigger than a PAGE!! + */ + buf = "FORMAT TOO BIG\n"; + r = simple_read_from_buffer(ubuf, cnt, ppos, + buf, strlen(buf)); + goto out; + } - return 0; + r = simple_read_from_buffer(ubuf, cnt, ppos, + s->buffer, s->len); + out: + kfree(s); + return r; } static ssize_t @@ -954,10 +877,8 @@ static const struct file_operations ftrace_enable_fops = { }; static const struct file_operations ftrace_event_format_fops = { - .open = trace_format_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, + .open = tracing_open_generic, + .read = event_format_read, }; static const struct file_operations ftrace_event_id_fops = { diff --git a/trunk/kernel/trace/trace_functions_graph.c b/trunk/kernel/trace/trace_functions_graph.c index 6f233698518e..6bff23625781 100644 --- a/trunk/kernel/trace/trace_functions_graph.c +++ b/trunk/kernel/trace/trace_functions_graph.c @@ -507,15 +507,7 @@ get_return_for_leaf(struct trace_iterator *iter, * if the output fails. */ data->ent = *curr; - /* - * If the next event is not a return type, then - * we only care about what type it is. Otherwise we can - * safely copy the entire event. - */ - if (next->ent.type == TRACE_GRAPH_RET) - data->ret = *next; - else - data->ret.ent.type = next->ent.type; + data->ret = *next; } } diff --git a/trunk/lib/Kconfig.debug b/trunk/lib/Kconfig.debug index 1b4afd2e6ca0..9e06b7f5ecf1 100644 --- a/trunk/lib/Kconfig.debug +++ b/trunk/lib/Kconfig.debug @@ -994,16 +994,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER config LATENCYTOP bool "Latency measuring infrastructure" - depends on HAVE_LATENCYTOP_SUPPORT - depends on DEBUG_KERNEL - depends on STACKTRACE_SUPPORT - depends on PROC_FS select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE select KALLSYMS select KALLSYMS_ALL select STACKTRACE select SCHEDSTATS select SCHED_DEBUG + depends on HAVE_LATENCYTOP_SUPPORT help Enable this option if you want to use the LatencyTOP tool to find out which userspace is blocking on what kernel operations. diff --git a/trunk/scripts/recordmcount.pl b/trunk/scripts/recordmcount.pl index e67f05486087..0171060b5fd6 100755 --- a/trunk/scripts/recordmcount.pl +++ b/trunk/scripts/recordmcount.pl @@ -159,7 +159,6 @@ my $function_regex; # Find the name of a function # (return offset and func name) my $mcount_regex; # Find the call site to mcount (return offset) -my $mcount_adjust; # Address adjustment to mcount offset my $alignment; # The .align value to use for $mcount_section my $section_type; # Section header plus possible alignment command my $can_use_local = 0; # If we can use local function references @@ -214,7 +213,6 @@ sub check_objcopy $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; $section_type = '@progbits'; -$mcount_adjust = 0; $type = ".long"; if ($arch eq "x86_64") { @@ -353,9 +351,6 @@ sub check_objcopy } elsif ($arch eq "microblaze") { # Microblaze calls '_mcount' instead of plain 'mcount'. $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$"; -} elsif ($arch eq "blackfin") { - $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s__mcount\$"; - $mcount_adjust = -4; } else { die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD"; } @@ -516,7 +511,7 @@ sub update_funcs } # is this a call site to mcount? If so, record it to print later if ($text_found && /$mcount_regex/) { - push(@offsets, (hex $1) + $mcount_adjust); + push(@offsets, hex $1); } } diff --git a/trunk/tools/perf/Makefile b/trunk/tools/perf/Makefile index 41abb90df50d..dcb9700b88d2 100644 --- a/trunk/tools/perf/Makefile +++ b/trunk/tools/perf/Makefile @@ -157,10 +157,6 @@ all:: # # Define NO_DWARF if you do not want debug-info analysis feature at all. -$(shell sh -c 'mkdir -p $(OUTPUT)scripts/{perl,python}/Perf-Trace-Util/' 2> /dev/null) -$(shell sh -c 'mkdir -p $(OUTPUT)util/{ui/browsers,scripting-engines}/' 2> /dev/null) -$(shell sh -c 'mkdir $(OUTPUT)bench' 2> /dev/null) - $(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE @$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT) -include $(OUTPUT)PERF-VERSION-FILE @@ -186,8 +182,6 @@ ifeq ($(ARCH),x86_64) ARCH := x86 endif -$(shell sh -c 'mkdir -p $(OUTPUT)arch/$(ARCH)/util/' 2> /dev/null) - # CFLAGS and LDFLAGS are for the users to override from the command line. # @@ -268,6 +262,7 @@ export prefix bindir sharedir sysconfdir CC = $(CROSS_COMPILE)gcc AR = $(CROSS_COMPILE)ar RM = rm -f +MKDIR = mkdir TAR = tar FIND = find INSTALL = install @@ -838,6 +833,7 @@ ifndef V QUIET_CC = @echo ' ' CC $@; QUIET_AR = @echo ' ' AR $@; QUIET_LINK = @echo ' ' LINK $@; + QUIET_MKDIR = @echo ' ' MKDIR $@; QUIET_BUILT_IN = @echo ' ' BUILTIN $@; QUIET_GEN = @echo ' ' GEN $@; QUIET_SUBDIR0 = +@subdir= @@ -1012,6 +1008,14 @@ $(LIB_OBJS) $(BUILTIN_OBJS): $(LIB_H) $(patsubst perf-%$X,%.o,$(PROGRAMS)): $(LIB_H) $(wildcard */*.h) builtin-revert.o wt-status.o: wt-status.h +# we compile into subdirectories. if the target directory is not the source directory, they might not exists. So +# we depend the various files onto their directories. +DIRECTORY_DEPS = $(LIB_OBJS) $(BUILTIN_OBJS) $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h +$(DIRECTORY_DEPS): $(sort $(dir $(DIRECTORY_DEPS))) +# In the second step, we make a rule to actually create these directories +$(sort $(dir $(DIRECTORY_DEPS))): + $(QUIET_MKDIR)$(MKDIR) -p $@ 2>/dev/null + $(LIB_FILE): $(LIB_OBJS) $(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIB_OBJS)