Re: [PATCH 2/4] perf timechart: implement IO mode
From: Jiri Olsa
Date: Tue Jun 24 2014 - 04:35:06 EST
On Fri, Jun 20, 2014 at 02:29:49PM +0400, Stanislav Fomichev wrote:
> In IO mode timechart shows any disk/network activity.
way too small changelog for the size of the patch ;-)
I'll need some more info (description, usage..) to push this throught
thanks,
jirka
>
> Signed-off-by: Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx>
> ---
> tools/perf/Documentation/perf-timechart.txt | 25 +-
> tools/perf/builtin-timechart.c | 613 +++++++++++++++++++++++++++-
> tools/perf/util/svghelper.c | 98 ++++-
> tools/perf/util/svghelper.h | 6 +-
> 4 files changed, 718 insertions(+), 24 deletions(-)
>
> diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
> index 5e0f986dff38..ec6b46c7bca0 100644
> --- a/tools/perf/Documentation/perf-timechart.txt
> +++ b/tools/perf/Documentation/perf-timechart.txt
> @@ -15,10 +15,20 @@ DESCRIPTION
> There are two variants of perf timechart:
>
> 'perf timechart record <command>' to record the system level events
> - of an arbitrary workload.
> + of an arbitrary workload. By default timechart records only scheduler
> + and CPU events (task switches, running times, CPU power states, etc),
> + but it's possible to record IO (disk, network) activity using -I argument.
>
> 'perf timechart' to turn a trace into a Scalable Vector Graphics file,
> - that can be viewed with popular SVG viewers such as 'Inkscape'.
> + that can be viewed with popular SVG viewers such as 'Inkscape'. Depending
> + on the events in the perf.data file, timechart will contain scheduler/cpu
> + events or IO events.
> +
> + In IO mode, every bar has two charts: upper and lower.
> + Upper bar shows incoming events (disk reads, ingress network packets).
> + Lower bar shows outgoing events (disk writes, egress network packets).
> + There are also poll bars which show how much time application spent
> + in poll/epoll/select syscalls.
>
> TIMECHART OPTIONS
> -----------------
> @@ -63,6 +73,9 @@ RECORD OPTIONS
> -T::
> --tasks-only::
> Record only tasks-related events
> +-I::
> +--io-only::
> + Record only io-related events
> -g::
> --callchain::
> Do call-graph (stack chain/backtrace) recording
> @@ -87,6 +100,14 @@ Record system-wide timechart:
>
> $ perf timechart --highlight gcc
>
> +Record system-wide IO events:
> +
> + $ perf timechart record -I
> +
> + then generate timechart:
> +
> + $ perf timechart
> +
> SEE ALSO
> --------
> linkperf:perf-record[1]
> diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
> index 74db2568b867..8d454c55bc4e 100644
> --- a/tools/perf/builtin-timechart.c
> +++ b/tools/perf/builtin-timechart.c
> @@ -60,10 +60,14 @@ struct timechart {
> tasks_only,
> with_backtrace,
> topology;
> + /* IO related settings */
> + u64 io_events;
> + bool io_only;
> };
>
> struct per_pidcomm;
> struct cpu_sample;
> +struct io_sample;
>
> /*
> * Datastructure layout:
> @@ -84,6 +88,7 @@ struct per_pid {
> u64 start_time;
> u64 end_time;
> u64 total_time;
> + u64 total_bytes;
> int display;
>
> struct per_pidcomm *all;
> @@ -97,6 +102,8 @@ struct per_pidcomm {
> u64 start_time;
> u64 end_time;
> u64 total_time;
> + u64 max_bytes;
> + u64 total_bytes;
>
> int Y;
> int display;
> @@ -107,6 +114,7 @@ struct per_pidcomm {
> char *comm;
>
> struct cpu_sample *samples;
> + struct io_sample *io_samples;
> };
>
> struct sample_wrapper {
> @@ -131,6 +139,27 @@ struct cpu_sample {
> const char *backtrace;
> };
>
> +enum {
> + IOTYPE_READ,
> + IOTYPE_WRITE,
> + IOTYPE_SYNC,
> + IOTYPE_TX,
> + IOTYPE_RX,
> + IOTYPE_POLL,
> +};
> +
> +struct io_sample {
> + struct io_sample *next;
> +
> + u64 start_time;
> + u64 end_time;
> + u64 bytes;
> + int type;
> + int fd;
> + int err;
> + int merges;
> +};
> +
> #define CSTATE 1
> #define PSTATE 2
>
> @@ -682,6 +711,212 @@ static void end_sample_processing(struct timechart *tchart)
> }
> }
>
> +static int pid_begin_io_sample(struct timechart *tchart, int pid, int type,
> + u64 start, int fd)
> +{
> + struct per_pid *p = find_create_pid(tchart, pid);
> + struct per_pidcomm *c = p->current;
> + struct io_sample *sample;
> + struct io_sample *prev;
> +
> + if (!c) {
> + c = zalloc(sizeof(*c));
> + if (!c)
> + return -ENOMEM;
> + p->current = c;
> + c->next = p->all;
> + p->all = c;
> + }
> +
> + prev = c->io_samples;
> +
> + if (prev && prev->start_time && !prev->end_time) {
> + pr_err("Invalid previous event (duplicate start)!\n");
> + return -1;
> + }
> +
> + sample = zalloc(sizeof(*sample));
> + if (!sample)
> + return -ENOMEM;
> + sample->start_time = start;
> + sample->type = type;
> + sample->fd = fd;
> + sample->next = c->io_samples;
> + c->io_samples = sample;
> +
> + if (c->start_time == 0 || c->start_time > start)
> + c->start_time = start;
> +
> + return 0;
> +}
> +
> +static int pid_end_io_sample(struct timechart *tchart, int pid, int type,
> + u64 end, long ret)
> +{
> + struct per_pid *p = find_create_pid(tchart, pid);
> + struct per_pidcomm *c = p->current;
> + struct io_sample *sample;
> +
> + if (!c) {
> + pr_err("Invalid pidcomm!\n");
> + return -1;
> + }
> +
> + sample = c->io_samples;
> +
> + if (!sample) /* skip partially captured events */
> + return 0;
> +
> + if (c->io_samples->end_time) {
> + pr_err("Invalid previous event (non-zero)!\n");
> + return -1;
> + }
> +
> + if (c->io_samples->type != type) {
> + pr_err("Invalid previous event (type)!\n");
> + return -1;
> + }
> +
> + sample->end_time = end;
> +
> + if (ret < 0) {
> + sample->err = ret;
> + } else if (type == IOTYPE_READ || type == IOTYPE_WRITE ||
> + type == IOTYPE_TX || type == IOTYPE_RX) {
> +
> + if ((u64)ret > c->max_bytes)
> + c->max_bytes = ret;
> +
> + c->total_bytes += ret;
> + p->total_bytes += ret;
> + sample->bytes = ret;
> + }
> +
> + tchart->io_events++;
> +
> + return 0;
> +}
> +
> +static int
> +process_enter_read(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_READ,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_read(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_READ,
> + sample->time, ret);
> +}
> +
> +static int
> +process_enter_write(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_WRITE,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_write(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_WRITE,
> + sample->time, ret);
> +}
> +
> +static int
> +process_enter_sync(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_SYNC,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_sync(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_SYNC,
> + sample->time, ret);
> +}
> +
> +static int
> +process_enter_tx(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_TX,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_tx(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_TX,
> + sample->time, ret);
> +}
> +
> +static int
> +process_enter_rx(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_RX,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_rx(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_RX,
> + sample->time, ret);
> +}
> +
> +static int
> +process_enter_poll(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long fd = perf_evsel__intval(evsel, sample, "fd");
> + return pid_begin_io_sample(tchart, sample->tid, IOTYPE_POLL,
> + sample->time, fd);
> +}
> +
> +static int
> +process_exit_poll(struct timechart *tchart,
> + struct perf_evsel *evsel,
> + struct perf_sample *sample)
> +{
> + long ret = perf_evsel__intval(evsel, sample, "ret");
> + return pid_end_io_sample(tchart, sample->tid, IOTYPE_POLL,
> + sample->time, ret);
> +}
> +
> /*
> * Sort the pid datastructure
> */
> @@ -852,6 +1087,117 @@ static void draw_cpu_usage(struct timechart *tchart)
> }
> }
>
> +static void draw_io_bars(struct timechart *tchart)
> +{
> + const char *suf;
> + double bytes;
> + char comm[256];
> + struct per_pid *p;
> + struct per_pidcomm *c;
> + struct io_sample *sample;
> + int Y = 1;
> +
> + p = tchart->all_data;
> + while (p) {
> + c = p->all;
> + while (c) {
> + if (!c->display) {
> + c->Y = 0;
> + c = c->next;
> + continue;
> + }
> +
> + svg_box(Y, c->start_time, c->end_time, "process3");
> + sample = c->io_samples;
> + for (sample = c->io_samples; sample; sample = sample->next) {
> + double h = (double)sample->bytes / c->max_bytes;
> +
> + if (sample->err)
> + h = 1;
> +
> + if (sample->type == IOTYPE_SYNC)
> + svg_fbox(Y,
> + sample->start_time,
> + sample->end_time,
> + 1,
> + sample->err ? "error" : "sync",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + else if (sample->type == IOTYPE_POLL)
> + svg_fbox(Y,
> + sample->start_time,
> + sample->end_time,
> + 1,
> + sample->err ? "error" : "poll",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + else if (sample->type == IOTYPE_READ)
> + svg_ubox(Y,
> + sample->start_time,
> + sample->end_time,
> + h,
> + sample->err ? "error" : "disk",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + else if (sample->type == IOTYPE_WRITE)
> + svg_lbox(Y,
> + sample->start_time,
> + sample->end_time,
> + h,
> + sample->err ? "error" : "disk",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + else if (sample->type == IOTYPE_RX)
> + svg_ubox(Y,
> + sample->start_time,
> + sample->end_time,
> + h,
> + sample->err ? "error" : "net",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + else if (sample->type == IOTYPE_TX)
> + svg_lbox(Y,
> + sample->start_time,
> + sample->end_time,
> + h,
> + sample->err ? "error" : "net",
> + sample->fd,
> + sample->err,
> + sample->merges);
> + }
> +
> + suf = "";
> + bytes = c->total_bytes;
> + if (bytes > 1024) {
> + bytes = bytes / 1024;
> + suf = "K";
> + }
> + if (bytes > 1024) {
> + bytes = bytes / 1024;
> + suf = "M";
> + }
> + if (bytes > 1024) {
> + bytes = bytes / 1024;
> + suf = "G";
> + }
> +
> +
> + sprintf(comm, "%s:%i (%3.1f %sbytes)", c->comm ?: "", p->pid, bytes, suf);
> + svg_text(Y, c->start_time, comm);
> +
> + c->Y = Y;
> + Y++;
> + c = c->next;
> + }
> + p = p->next;
> + }
> +}
> +
> static void draw_process_bars(struct timechart *tchart)
> {
> struct per_pid *p;
> @@ -987,9 +1333,6 @@ static int determine_display_tasks(struct timechart *tchart, u64 threshold)
> struct per_pidcomm *c;
> int count = 0;
>
> - if (process_filter)
> - return determine_display_tasks_filtered(tchart);
> -
> p = tchart->all_data;
> while (p) {
> p->display = 0;
> @@ -1025,15 +1368,46 @@ static int determine_display_tasks(struct timechart *tchart, u64 threshold)
> return count;
> }
>
> +static int determine_display_io_tasks(struct timechart *timechart, u64 threshold)
> +{
> + struct per_pid *p;
> + struct per_pidcomm *c;
> + int count = 0;
> +
> + p = timechart->all_data;
> + while (p) {
> + /* no exit marker, task kept running to the end */
> + if (p->end_time == 0)
> + p->end_time = timechart->last_time;
> +
> + c = p->all;
> +
> + while (c) {
> + c->display = 0;
>
> + if (c->total_bytes >= threshold) {
> + c->display = 1;
> + count++;
> + }
>
> + if (c->end_time == 0)
> + c->end_time = timechart->last_time;
> +
> + c = c->next;
> + }
> + p = p->next;
> + }
> + return count;
> +}
> +
> +#define BYTES_THRESH (1 * 1024 * 1024)
> #define TIME_THRESH 10000000
>
> static void write_svg_file(struct timechart *tchart, const char *filename)
> {
> u64 i;
> int count;
> - int thresh = TIME_THRESH;
> + int thresh = tchart->io_events ? BYTES_THRESH : TIME_THRESH;
>
> if (tchart->power_only)
> tchart->proc_num = 0;
> @@ -1041,28 +1415,43 @@ static void write_svg_file(struct timechart *tchart, const char *filename)
> /* We'd like to show at least proc_num tasks;
> * be less picky if we have fewer */
> do {
> - count = determine_display_tasks(tchart, thresh);
> + if (process_filter)
> + count = determine_display_tasks_filtered(tchart);
> + else if (tchart->io_events)
> + count = determine_display_io_tasks(tchart, thresh);
> + else
> + count = determine_display_tasks(tchart, thresh);
> thresh /= 10;
> } while (!process_filter && thresh && count < tchart->proc_num);
>
> if (!tchart->proc_num)
> count = 0;
>
> - open_svg(filename, tchart->numcpus, count, tchart->first_time, tchart->last_time);
> + if (tchart->io_events) {
> + open_svg(filename, 0, count, tchart->first_time, tchart->last_time);
>
> - svg_time_grid();
> - svg_legenda();
> + svg_time_grid(0.5);
> + svg_io_legenda();
>
> - for (i = 0; i < tchart->numcpus; i++)
> - svg_cpu_box(i, tchart->max_freq, tchart->turbo_frequency);
> + draw_io_bars(tchart);
> + } else {
> + open_svg(filename, tchart->numcpus, count, tchart->first_time, tchart->last_time);
>
> - draw_cpu_usage(tchart);
> - if (tchart->proc_num)
> - draw_process_bars(tchart);
> - if (!tchart->tasks_only)
> - draw_c_p_states(tchart);
> - if (tchart->proc_num)
> - draw_wakeups(tchart);
> + svg_time_grid(0);
> +
> + svg_legenda();
> +
> + for (i = 0; i < tchart->numcpus; i++)
> + svg_cpu_box(i, tchart->max_freq, tchart->turbo_frequency);
> +
> + draw_cpu_usage(tchart);
> + if (tchart->proc_num)
> + draw_process_bars(tchart);
> + if (!tchart->tasks_only)
> + draw_c_p_states(tchart);
> + if (tchart->proc_num)
> + draw_wakeups(tchart);
> + }
>
> svg_close();
> }
> @@ -1110,6 +1499,56 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name)
> { "power:power_end", process_sample_power_end },
> { "power:power_frequency", process_sample_power_frequency },
> #endif
> +
> + { "syscalls:sys_enter_read", process_enter_read },
> + { "syscalls:sys_enter_pread64", process_enter_read },
> + { "syscalls:sys_enter_readv", process_enter_read },
> + { "syscalls:sys_enter_preadv", process_enter_read },
> + { "syscalls:sys_enter_write", process_enter_write },
> + { "syscalls:sys_enter_pwrite64", process_enter_write },
> + { "syscalls:sys_enter_writev", process_enter_write },
> + { "syscalls:sys_enter_pwritev", process_enter_write },
> + { "syscalls:sys_enter_sync", process_enter_sync },
> + { "syscalls:sys_enter_sync_file_range", process_enter_sync },
> + { "syscalls:sys_enter_fsync", process_enter_sync },
> + { "syscalls:sys_enter_msync", process_enter_sync },
> + { "syscalls:sys_enter_recvfrom", process_enter_rx },
> + { "syscalls:sys_enter_recvmmsg", process_enter_rx },
> + { "syscalls:sys_enter_recvmsg", process_enter_rx },
> + { "syscalls:sys_enter_sendto", process_enter_tx },
> + { "syscalls:sys_enter_sendmsg", process_enter_tx },
> + { "syscalls:sys_enter_sendmmsg", process_enter_tx },
> + { "syscalls:sys_enter_epoll_pwait", process_enter_poll },
> + { "syscalls:sys_enter_epoll_wait", process_enter_poll },
> + { "syscalls:sys_enter_poll", process_enter_poll },
> + { "syscalls:sys_enter_ppoll", process_enter_poll },
> + { "syscalls:sys_enter_pselect6", process_enter_poll },
> + { "syscalls:sys_enter_select", process_enter_poll },
> +
> + { "syscalls:sys_exit_read", process_exit_read },
> + { "syscalls:sys_exit_pread64", process_exit_read },
> + { "syscalls:sys_exit_readv", process_exit_read },
> + { "syscalls:sys_exit_preadv", process_exit_read },
> + { "syscalls:sys_exit_write", process_exit_write },
> + { "syscalls:sys_exit_pwrite64", process_exit_write },
> + { "syscalls:sys_exit_writev", process_exit_write },
> + { "syscalls:sys_exit_pwritev", process_exit_write },
> + { "syscalls:sys_exit_sync", process_exit_sync },
> + { "syscalls:sys_exit_sync_file_range", process_exit_sync },
> + { "syscalls:sys_exit_fsync", process_exit_sync },
> + { "syscalls:sys_exit_msync", process_exit_sync },
> + { "syscalls:sys_exit_recvfrom", process_exit_rx },
> + { "syscalls:sys_exit_recvmmsg", process_exit_rx },
> + { "syscalls:sys_exit_recvmsg", process_exit_rx },
> + { "syscalls:sys_exit_sendto", process_exit_tx },
> + { "syscalls:sys_exit_sendmsg", process_exit_tx },
> + { "syscalls:sys_exit_sendmmsg", process_exit_tx },
> + { "syscalls:sys_exit_epoll_pwait", process_exit_poll },
> + { "syscalls:sys_exit_epoll_wait", process_exit_poll },
> + { "syscalls:sys_exit_poll", process_exit_poll },
> + { "syscalls:sys_exit_ppoll", process_exit_poll },
> + { "syscalls:sys_exit_pselect6", process_exit_poll },
> + { "syscalls:sys_exit_select", process_exit_poll },
> };
> struct perf_data_file file = {
> .path = input_name,
> @@ -1154,6 +1593,139 @@ out_delete:
> return ret;
> }
>
> +static int timechart__io_record(int argc, const char **argv)
> +{
> + unsigned int rec_argc, i;
> + const char **rec_argv;
> + const char **p;
> + char *filter = NULL;
> +
> + const char * const common_args[] = {
> + "record", "-a", "-R", "-c", "1",
> + };
> + unsigned int common_args_nr = ARRAY_SIZE(common_args);
> +
> + const char * const disk_events[] = {
> + "syscalls:sys_enter_read",
> + "syscalls:sys_enter_pread64",
> + "syscalls:sys_enter_readv",
> + "syscalls:sys_enter_preadv",
> + "syscalls:sys_enter_write",
> + "syscalls:sys_enter_pwrite64",
> + "syscalls:sys_enter_writev",
> + "syscalls:sys_enter_pwritev",
> + "syscalls:sys_enter_sync",
> + "syscalls:sys_enter_sync_file_range",
> + "syscalls:sys_enter_fsync",
> + "syscalls:sys_enter_msync",
> +
> + "syscalls:sys_exit_read",
> + "syscalls:sys_exit_pread64",
> + "syscalls:sys_exit_readv",
> + "syscalls:sys_exit_preadv",
> + "syscalls:sys_exit_write",
> + "syscalls:sys_exit_pwrite64",
> + "syscalls:sys_exit_writev",
> + "syscalls:sys_exit_pwritev",
> + "syscalls:sys_exit_sync",
> + "syscalls:sys_exit_sync_file_range",
> + "syscalls:sys_exit_fsync",
> + "syscalls:sys_exit_msync",
> + };
> + unsigned int disk_events_nr = ARRAY_SIZE(disk_events);
> +
> + const char * const net_events[] = {
> + "syscalls:sys_enter_recvfrom",
> + "syscalls:sys_enter_recvmmsg",
> + "syscalls:sys_enter_recvmsg",
> + "syscalls:sys_enter_sendto",
> + "syscalls:sys_enter_sendmsg",
> + "syscalls:sys_enter_sendmmsg",
> +
> + "syscalls:sys_exit_recvfrom",
> + "syscalls:sys_exit_recvmmsg",
> + "syscalls:sys_exit_recvmsg",
> + "syscalls:sys_exit_sendto",
> + "syscalls:sys_exit_sendmsg",
> + "syscalls:sys_exit_sendmmsg",
> + };
> + unsigned int net_events_nr = ARRAY_SIZE(net_events);
> +
> + const char * const poll_events[] = {
> + "syscalls:sys_enter_epoll_pwait",
> + "syscalls:sys_enter_epoll_wait",
> + "syscalls:sys_enter_poll",
> + "syscalls:sys_enter_ppoll",
> + "syscalls:sys_enter_pselect6",
> + "syscalls:sys_enter_select",
> +
> + "syscalls:sys_exit_epoll_pwait",
> + "syscalls:sys_exit_epoll_wait",
> + "syscalls:sys_exit_poll",
> + "syscalls:sys_exit_ppoll",
> + "syscalls:sys_exit_pselect6",
> + "syscalls:sys_exit_select",
> + };
> + unsigned int poll_events_nr = ARRAY_SIZE(poll_events);
> +
> + rec_argc = common_args_nr +
> + disk_events_nr * 4 +
> + net_events_nr * 4 +
> + poll_events_nr * 4 +
> + argc;
> + rec_argv = calloc(rec_argc + 1, sizeof(char *));
> +
> + if (rec_argv == NULL)
> + return -ENOMEM;
> +
> + if (asprintf(&filter, "common_pid != %d", getpid()) < 0)
> + return -ENOMEM;
> +
> + p = rec_argv;
> + for (i = 0; i < common_args_nr; i++)
> + *p++ = strdup(common_args[i]);
> +
> + for (i = 0; i < disk_events_nr; i++) {
> + if (!is_valid_tracepoint(disk_events[i])) {
> + rec_argc -= 4;
> + continue;
> + }
> +
> + *p++ = "-e";
> + *p++ = strdup(disk_events[i]);
> + *p++ = "--filter";
> + *p++ = filter;
> + }
> + for (i = 0; i < net_events_nr; i++) {
> + if (!is_valid_tracepoint(net_events[i])) {
> + rec_argc -= 4;
> + continue;
> + }
> +
> + *p++ = "-e";
> + *p++ = strdup(net_events[i]);
> + *p++ = "--filter";
> + *p++ = filter;
> + }
> + for (i = 0; i < poll_events_nr; i++) {
> + if (!is_valid_tracepoint(poll_events[i])) {
> + rec_argc -= 4;
> + continue;
> + }
> +
> + *p++ = "-e";
> + *p++ = strdup(poll_events[i]);
> + *p++ = "--filter";
> + *p++ = filter;
> + }
> +
> + for (i = 0; i < (unsigned int)argc; i++)
> + *p++ = argv[i];
> +
> + return cmd_record(rec_argc, rec_argv, NULL);
> +}
> +
> +
> static int timechart__record(struct timechart *tchart, int argc, const char **argv)
> {
> unsigned int rec_argc, i, j;
> @@ -1314,6 +1886,8 @@ int cmd_timechart(int argc, const char **argv,
> OPT_BOOLEAN('P', "power-only", &tchart.power_only, "output power data only"),
> OPT_BOOLEAN('T', "tasks-only", &tchart.tasks_only,
> "output processes data only"),
> + OPT_BOOLEAN('I', "io-only", &tchart.io_only,
> + "record only IO data"),
> OPT_BOOLEAN('g', "callchain", &tchart.with_backtrace, "record callchain"),
> OPT_END()
> };
> @@ -1340,7 +1914,10 @@ int cmd_timechart(int argc, const char **argv,
> return -1;
> }
>
> - return timechart__record(&tchart, argc, argv);
> + if (tchart.io_only)
> + return timechart__io_record(argc, argv);
> + else
> + return timechart__record(&tchart, argc, argv);
> } else if (argc)
> usage_with_options(timechart_usage, timechart_options);
>
> diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
> index 27caf0f45469..283d3e73e2f2 100644
> --- a/tools/perf/util/svghelper.c
> +++ b/tools/perf/util/svghelper.c
> @@ -30,6 +30,7 @@ static u64 turbo_frequency, max_freq;
>
> #define SLOT_MULT 30.0
> #define SLOT_HEIGHT 25.0
> +#define SLOT_HALF (SLOT_HEIGHT / 2)
>
> int svg_page_width = 1000;
> u64 svg_highlight;
> @@ -114,8 +115,14 @@ void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
> fprintf(svgfile, " rect { stroke-width: 1; }\n");
> fprintf(svgfile, " rect.process { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.process3 { fill:rgb(180,180,180); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.sample { fill:rgb( 0, 0,255); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.sample_hi{ fill:rgb(255,128, 0); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.error { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.net { fill:rgb( 0,128, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.disk { fill:rgb( 0, 0,255); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.sync { fill:rgb(128,128, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> + fprintf(svgfile, " rect.poll { fill:rgb( 0,128,128); fill-opacity:0.2; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.blocked { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.waiting { fill:rgb(224,214, 0); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> fprintf(svgfile, " rect.WAITING { fill:rgb(255,214, 48); fill-opacity:0.6; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
> @@ -132,6 +139,75 @@ void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
> fprintf(svgfile, " ]]>\n </style>\n</defs>\n");
> }
>
> +static double normalize_height(double height)
> +{
> + if (height < 0.25)
> + return 0.25;
> + else if (height < 0.50)
> + return 0.50;
> + else if (height < 0.75)
> + return 0.75;
> + else
> + return 0.100;
> +}
> +
> +void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
> +{
> + double w = time2pixels(end) - time2pixels(start);
> + height = normalize_height(height);
> +
> + if (!svgfile)
> + return;
> +
> + fprintf(svgfile, "<g>\n");
> + fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
> + fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
> + time2pixels(start),
> + w,
> + Yslot * SLOT_MULT,
> + SLOT_HALF * height,
> + type);
> + fprintf(svgfile, "</g>\n");
> +}
> +
> +void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
> +{
> + double w = time2pixels(end) - time2pixels(start);
> + height = normalize_height(height);
> +
> + if (!svgfile)
> + return;
> +
> + fprintf(svgfile, "<g>\n");
> + fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
> + fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
> + time2pixels(start),
> + w,
> + Yslot * SLOT_MULT + SLOT_HEIGHT - SLOT_HALF * height,
> + SLOT_HALF * height,
> + type);
> + fprintf(svgfile, "</g>\n");
> +}
> +
> +void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges)
> +{
> + double w = time2pixels(end) - time2pixels(start);
> + height = normalize_height(height);
> +
> + if (!svgfile)
> + return;
> +
> + fprintf(svgfile, "<g>\n");
> + fprintf(svgfile, "<title>fd=%d error=%d merges=%d</title>\n", fd, err, merges);
> + fprintf(svgfile, "<rect x=\"%.8f\" width=\"%.8f\" y=\"%.1f\" height=\"%.1f\" class=\"%s\"/>\n",
> + time2pixels(start),
> + w,
> + Yslot * SLOT_MULT + SLOT_HEIGHT - SLOT_HEIGHT * height,
> + SLOT_HEIGHT * height,
> + type);
> + fprintf(svgfile, "</g>\n");
> +}
> +
> void svg_box(int Yslot, u64 start, u64 end, const char *type)
> {
> if (!svgfile)
> @@ -543,6 +619,20 @@ static void svg_legenda_box(int X, const char *text, const char *style)
> X + boxsize + 5, boxsize, 0.8 * boxsize, text);
> }
>
> +void svg_io_legenda(void)
> +{
> + if (!svgfile)
> + return;
> +
> + fprintf(svgfile, "<g>\n");
> + svg_legenda_box(0, "Disk", "disk");
> + svg_legenda_box(100, "Network", "net");
> + svg_legenda_box(200, "Sync", "sync");
> + svg_legenda_box(300, "Poll", "poll");
> + svg_legenda_box(400, "Error", "error");
> + fprintf(svgfile, "</g>\n");
> +}
> +
> void svg_legenda(void)
> {
> if (!svgfile)
> @@ -559,7 +649,7 @@ void svg_legenda(void)
> fprintf(svgfile, "</g>\n");
> }
>
> -void svg_time_grid(void)
> +void svg_time_grid(double min_thickness)
> {
> u64 i;
>
> @@ -579,8 +669,10 @@ void svg_time_grid(void)
> color = 128;
> }
>
> - fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%" PRIu64 "\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%.3f\"/>\n",
> - time2pixels(i), SLOT_MULT/2, time2pixels(i), total_height, color, color, color, thickness);
> + if (thickness >= min_thickness)
> + fprintf(svgfile, "<line x1=\"%.8f\" y1=\"%.2f\" x2=\"%.8f\" y2=\"%" PRIu64 "\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%.3f\"/>\n",
> + time2pixels(i), SLOT_MULT/2, time2pixels(i),
> + total_height, color, color, color, thickness);
>
> i += 10000000;
> }
> diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
> index e3aff5332e30..9292a5291445 100644
> --- a/tools/perf/util/svghelper.h
> +++ b/tools/perf/util/svghelper.h
> @@ -4,6 +4,9 @@
> #include <linux/types.h>
>
> extern void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end);
> +extern void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
> +extern void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
> +extern void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges);
> extern void svg_box(int Yslot, u64 start, u64 end, const char *type);
> extern void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace);
> extern void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace);
> @@ -16,7 +19,8 @@ extern void svg_cstate(int cpu, u64 start, u64 end, int type);
> extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
>
>
> -extern void svg_time_grid(void);
> +extern void svg_time_grid(double min_thickness);
> +extern void svg_io_legenda(void);
> extern void svg_legenda(void);
> extern void svg_wakeline(u64 start, int row1, int row2, const char *backtrace);
> extern void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2, const char *backtrace);
> --
> 1.8.3.2
>
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