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authorJean Pihet <jean.pihet@newoldbits.com>2011-03-03 11:25:43 +0100
committerKevin Hilman <khilman@ti.com>2011-03-11 07:21:44 -0800
commit5e7c58dc8d9b7f31d418cf98c6a8cad84b86f510 (patch)
tree76556b2447f39104ac9a56e9d94182d0f6fce6fb /arch/arm/mach-omap2/clock.c
parenta271e58cfbe345f71d39ebbae063ad2d68892470 (diff)
downloadblackbird-op-linux-5e7c58dc8d9b7f31d418cf98c6a8cad84b86f510.tar.gz
blackbird-op-linux-5e7c58dc8d9b7f31d418cf98c6a8cad84b86f510.zip
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>
Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
-rw-r--r--arch/arm/mach-omap2/clock.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 46d03ccc2806..180299e4a838 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 @@ void omap2_clk_disable(struct clk *clk)
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 @@ int omap2_clk_enable(struct clk *clk)
}
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 @@ int omap2_clk_set_rate(struct clk *clk, unsigned long rate)
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;
}
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