perf: add OMAP support for the new power events
The patch adds the new power management trace points for
the OMAP architecture.
The trace points are for:
- default idle handler. Since the cpuidle framework is
instrumented in the generic way there is no need to
add trace points in the OMAP specific cpuidle handler;
- SoC clocks changes (enable, disable, set_rate),
- power domain states: the desired target state and -if different-
the actually hit state.
Because of the generic nature of the changes, OMAP3 and OMAP4 are supported.
Tested on OMAP3 with suspend/resume, cpuidle, basic DVFS.
Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 46d03cc..180299e 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -22,7 +22,9 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/bitops.h>
+#include <trace/events/power.h>
+#include <asm/cpu.h>
#include <plat/clock.h>
#include "clockdomain.h"
#include <plat/cpu.h>
@@ -261,8 +263,10 @@
pr_debug("clock: %s: disabling in hardware\n", clk->name);
- if (clk->ops && clk->ops->disable)
+ if (clk->ops && clk->ops->disable) {
+ trace_clock_disable(clk->name, 0, smp_processor_id());
clk->ops->disable(clk);
+ }
if (clk->clkdm)
clkdm_clk_disable(clk->clkdm, clk);
@@ -314,6 +318,7 @@
}
if (clk->ops && clk->ops->enable) {
+ trace_clock_enable(clk->name, 1, smp_processor_id());
ret = clk->ops->enable(clk);
if (ret) {
WARN(1, "clock: %s: could not enable: %d\n",
@@ -353,8 +358,10 @@
pr_debug("clock: set_rate for clock %s to rate %ld\n", clk->name, rate);
/* dpll_ck, core_ck, virt_prcm_set; plus all clksel clocks */
- if (clk->set_rate)
+ if (clk->set_rate) {
+ trace_clock_set_rate(clk->name, rate, smp_processor_id());
ret = clk->set_rate(clk, rate);
+ }
return ret;
}