Commit 16cc1d6d authored Jan 25, 2012 by Laura Abbott Committed by Matt Wagantall Jun 22, 2015

msm: rtb: Log the context id in the rtb



Store the context id in the register trace buffer.
The process id can be derived from the context id.
This gives a general idea about what process was last
running when the RTB stopped.

Change-Id: I34db8135b78b232190044f771e61639065d73318
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>

parent ecfd4eff

arch/arm/mm/context.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <linux/mm.h>
		#include <linux/smp.h>
		#include <linux/percpu.h>
		#include <linux/msm_rtb.h>

		#include <asm/mmu_context.h>
		#include <asm/smp_plat.h>
		@@ -120,6 +121,7 @@ static int contextidr_notifier(struct notifier_block *unused, unsigned long cmd,
		" mcr p15, 0, %0, c13, c0, 1\n"
		: "=r" (contextidr), "+r" (pid)
		: "I" (~ASID_MASK));
		uncached_logk(LOGK_CTXID, (void *)contextidr);
		isb();

		return NOTIFY_OK;