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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2008-10-03 15:39:21 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-10-14 10:39:17 +0200 |
| commit | 097d036a2f25eecc42435c57e010aaf4a2eed2d9 (patch) | |
| tree | ee5e40b940475e8a047e02093688072ff3e330d3 /kernel/trace/trace_boot.c | |
| parent | ftrace: move pc counter in irqtrace (diff) | |
| download | linux-dev-097d036a2f25eecc42435c57e010aaf4a2eed2d9.tar.xz linux-dev-097d036a2f25eecc42435c57e010aaf4a2eed2d9.zip | |
tracing/fastboot: only trace non-module initcalls
At this time, only built-in initcalls interest us.
We can't really produce a relevant graph if we include
the modules initcall too.
I had good results after this patch (see svg in attachment).
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_boot.c')
| -rw-r--r-- | kernel/trace/trace_boot.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c index b9dc2c0093ab..a7efe3559654 100644 --- a/kernel/trace/trace_boot.c +++ b/kernel/trace/trace_boot.c @@ -22,11 +22,16 @@ void start_boot_trace(void) trace_boot_enabled = 1; } -void stop_boot_trace(struct trace_array *tr) +void stop_boot_trace(void) { trace_boot_enabled = 0; } +void reset_boot_trace(struct trace_array *tr) +{ + stop_boot_trace(); +} + static void boot_trace_init(struct trace_array *tr) { int cpu; @@ -43,7 +48,7 @@ static void boot_trace_ctrl_update(struct trace_array *tr) if (tr->ctrl) start_boot_trace(); else - stop_boot_trace(tr); + stop_boot_trace(); } static enum print_line_t initcall_print_line(struct trace_iterator *iter) @@ -81,7 +86,7 @@ struct tracer boot_tracer __read_mostly = { .name = "initcall", .init = boot_trace_init, - .reset = stop_boot_trace, + .reset = reset_boot_trace, .ctrl_update = boot_trace_ctrl_update, .print_line = initcall_print_line, }; |