Perf: Make per-process counters configurable

Add feature to enable/disable per-process tracecounters at run-time.

Change-Id: Id6a4c7a0ecd1f5add85464c6ed260860e15c4e3b
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
diff --git a/arch/arm/mach-msm/perf_debug.c b/arch/arm/mach-msm/perf_debug.c
index 8c7f30e..ad3ee40 100644
--- a/arch/arm/mach-msm/perf_debug.c
+++ b/arch/arm/mach-msm/perf_debug.c
@@ -29,6 +29,7 @@
 	"4  Perf: Check perf activity on correct CPU\n"
 	"7  Perf: Add L1 counters to tracepoints\n"
 	"10 Perf: Fix counts across power collapse\n"
+	"12 Perf: Make per-process counters configurable\n"
 ;
 
 static ssize_t desc_read(struct file *fp, char __user *buf,