Backporting mac80211 plugin. Signed-off-by: Jiri Olsa <jo...@redhat.com> Cc: Corey Ashford <cjash...@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Ingo Molnar <mi...@elte.hu> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Cc: Arnaldo Carvalho de Melo <a...@redhat.com> Cc: Steven Rostedt <rost...@goodmis.org> Cc: David Ahern <dsah...@gmail.com> --- tools/lib/traceevent/Makefile | 3 +- tools/lib/traceevent/plugin_mac80211.c | 204 +++++++++++++++++++++++++++++++++ 2 files changed, 206 insertions(+), 1 deletion(-) create mode 100644 tools/lib/traceevent/plugin_mac80211.c
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile index 3ac01c6..690e107 100644 --- a/tools/lib/traceevent/Makefile +++ b/tools/lib/traceevent/Makefile @@ -208,7 +208,8 @@ $(obj)/%.o: $(src)/%.c PEVENT_LIB_OBJS = event-parse.o event-plugin.o trace-seq.o parse-filter.o parse-utils.o event-option.o PEVENT_LIB_OBJS += kbuffer-parse.o -PLUGIN_OBJS = plugin_jbd2.o plugin_blk.o plugin_hrtimer.o plugin_kmem.o plugin_kvm.o +PLUGIN_OBJS = plugin_jbd2.o plugin_blk.o plugin_hrtimer.o plugin_kmem.o plugin_kvm.o \ + plugin_mac80211.o PLUGINS := $(PLUGIN_OBJS:.o=.so) diff --git a/tools/lib/traceevent/plugin_mac80211.c b/tools/lib/traceevent/plugin_mac80211.c new file mode 100644 index 0000000..070c7c9 --- /dev/null +++ b/tools/lib/traceevent/plugin_mac80211.c @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2009 Johannes Berg <johan...@sipsolutions.net> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +#define INDENT 65 + +static void print_string(struct trace_seq *s, struct event_format *event, + const char *name, const void *data) +{ + struct format_field *f = pevent_find_field(event, name); + int offset; + int length; + + if (!f) { + trace_seq_printf(s, "NOTFOUND:%s", name); + return; + } + + offset = f->offset; + length = f->size; + + if (!strncmp(f->type, "__data_loc", 10)) { + unsigned long long v; + if (pevent_read_number_field(f, data, &v)) { + trace_seq_printf(s, "invalid_data_loc"); + return; + } + offset = v & 0xffff; + length = v >> 16; + } + + trace_seq_printf(s, "%.*s", length, (char *)data + offset); +} + +struct value_name { + unsigned long long value; + const char *name; +}; + +static void _print_enum(struct trace_seq *s, struct event_format *event, + const char *name, const void *data, + const struct value_name *names, int n_names) +{ + struct format_field *f = pevent_find_field(event, name); + unsigned long long val; + int i; + + if (!f) { + trace_seq_puts(s, "field-not-found"); + return; + } + + if (pevent_read_number_field(f, data, &val)) { + trace_seq_puts(s, "field-invalid"); + return; + } + + for (i = 0; i < n_names; i++) { + if (names[i].value == val) { + trace_seq_puts(s, names[i].name); + return; + } + } + + trace_seq_printf(s, "%llu", val); +} + +#define print_enum(s, ev, name, data, enums...) \ + ({ static const struct value_name __n[] = { enums }; \ + _print_enum(s, ev, name, data, __n, sizeof(__n)/sizeof(__n[0]));\ + }) + +static void _print_flag(struct trace_seq *s, struct event_format *event, + const char *name, const void *data, + const struct value_name *names, int n_names) +{ + struct format_field *f = pevent_find_field(event, name); + unsigned long long val; + int i, j, found, first = 1; + + if (!f) { + trace_seq_puts(s, "field-not-found"); + return; + } + + if (pevent_read_number_field(f, data, &val)) { + trace_seq_puts(s, "field-invalid"); + return; + } + + for (i = 0; i < 64; i++) { + if (!(val & (1ULL<<i))) + continue; + if (!first) + trace_seq_putc(s, '|'); + first = 0; + + found = 0; + for (j = 0; j < n_names; j++) { + if (i == names[j].value) { + trace_seq_puts(s, names[j].name); + found = 1; + break; + } + } + if (!found) + trace_seq_printf(s, "flag_%d", i); + } +} + +#define print_flag(s, ev, name, data, enums...) \ + ({ static const struct value_name __n[] = { enums }; \ + _print_flag(s, ev, name, data, __n, sizeof(__n)/sizeof(__n[0])); \ + }) + +#define SF(fn) pevent_print_num_field(s, fn ":%d", event, fn, record, 0) +#define SFX(fn) pevent_print_num_field(s, fn ":%#x", event, fn, record, 0) +#define SP() trace_seq_putc(s, ' ') + +static int drv_bss_info_changed(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + void *data = record->data; + + print_string(s, event, "wiphy_name", data); + trace_seq_printf(s, " vif:"); + print_string(s, event, "vif_name", data); + pevent_print_num_field(s, "(%d)", event, "vif_type", record, 1); + + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("assoc"); SP(); + SF("aid"); SP(); + SF("cts"); SP(); + SF("shortpre"); SP(); + SF("shortslot"); SP(); + SF("dtimper"); SP(); + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("bcnint"); SP(); + SFX("assoc_cap"); SP(); + SFX("basic_rates"); SP(); + SF("enable_beacon"); + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("ht_operation_mode"); + + return 0; +} + +static int drv_config(struct trace_seq *s, struct pevent_record *record, + struct event_format *event, void *context) +{ + void *data = record->data; + + print_string(s, event, "wiphy_name", data); + trace_seq_putc(s, ' '); + print_flag(s, event, "flags", data, + { 0, "MONITOR" }, + { 1, "PS" }, + { 2, "IDLE" }, + { 3, "QOS"}, + ); + pevent_print_num_field(s, " chan:%d/", event, "center_freq", record, 1); + print_enum(s, event, "channel_type", data, + { 0, "noht" }, + { 1, "ht20" }, + { 2, "ht40-" }, + { 3, "ht40+" }); + trace_seq_putc(s, ' '); + SF("power_level"); + + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, "mac80211", + "drv_bss_info_changed", + drv_bss_info_changed, NULL); + pevent_register_event_handler(pevent, -1, "mac80211", "drv_config", + drv_config, NULL); + + return 0; +} -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
