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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2016-02-10 15:01:08 -0500 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-02-18 20:11:11 -0500 |
| commit | ac21d5ebe38d8e1872a7159af8503ed55019c690 (patch) | |
| tree | 93c090b82fb0b9b87a6a2fe81fdd6f31fad6e9fb | |
| parent | ee0c607e5582ae4768c0b0fe93fa207974f26a34 (diff) | |
| download | trace-cmd-ac21d5ebe38d8e1872a7159af8503ed55019c690.tar.gz | |
trace-cmd-report: Add -S option to remove softirqs from trace
The -S option in trace-cmd report will not print events if the SOFTIRQ flag
is set. It does not affect hard interrupts.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | Documentation/trace-cmd-report.1.txt | 4 | ||||
| -rw-r--r-- | trace-read.c | 12 | ||||
| -rw-r--r-- | trace-usage.c | 1 |
3 files changed, 14 insertions, 3 deletions
diff --git a/Documentation/trace-cmd-report.1.txt b/Documentation/trace-cmd-report.1.txt index e3737f77..949cad82 100644 --- a/Documentation/trace-cmd-report.1.txt +++ b/Documentation/trace-cmd-report.1.txt @@ -138,6 +138,10 @@ OPTIONS in interrupt context but were called before the kernel "in interrupt" flag was set. +*-S*:: + Do not print events where the SOFTIRQ latency flag is set. + This will filter out most events that are from soft interrupt context. + *-v*:: This causes the following filters of *-F* to filter out the matching events. diff --git a/trace-read.c b/trace-read.c index cc0e9962..ccac1816 100644 --- a/trace-read.c +++ b/trace-read.c @@ -107,6 +107,7 @@ static int buffer_breaks = 0; static int debug = 0; static int no_irqs; +static int no_softirqs; static struct format_field *wakeup_task; static struct format_field *wakeup_success; @@ -860,9 +861,11 @@ test_filters(struct pevent *pevent, struct filter *event_filters, int ret = FILTER_NONE; int flags; - if (no_irqs) { + if (no_irqs || no_softirqs) { flags = pevent_data_flags(pevent, record); - if (flags & TRACE_FLAG_HARDIRQ) + if (no_irqs && (flags & TRACE_FLAG_HARDIRQ)) + return FILTER_MISS; + if (no_softirqs && (flags & TRACE_FLAG_SOFTIRQ)) return FILTER_MISS; } @@ -1439,7 +1442,7 @@ void trace_report (int argc, char **argv) {NULL, 0, NULL, 0} }; - c = getopt_long (argc-1, argv+1, "+hIi:H:feGpRr:tPNn:LlEwF:VvTqO:", + c = getopt_long (argc-1, argv+1, "+hSIi:H:feGpRr:tPNn:LlEwF:VvTqO:", long_options, &option_index); if (c == -1) break; @@ -1471,6 +1474,9 @@ void trace_report (int argc, char **argv) case 'I': no_irqs = 1; break; + case 'S': + no_softirqs = 1; + break; case 'P': show_printk = 1; break; diff --git a/trace-usage.c b/trace-usage.c index 743e260f..4a0d110e 100644 --- a/trace-usage.c +++ b/trace-usage.c @@ -140,6 +140,7 @@ static struct usage_help usage_help[] = { " -E show event files stored\n" " -F filter to filter output on\n" " -I filter out events with the HARDIRQ flag set\n" + " -S filter out events with the SOFTIRQ flag set\n" " -t print out full timestamp. Do not truncate to 6 places.\n" " -R raw format: ignore print format and only show field data\n" " -r raw format the events that match the option\n" |