Commit b7b6e670 authored Jul 15, 2015 by Se Wang (Patrick) Oh Committed by Venkata Narendra Kumar Gutta Jul 13, 2018

arm64: mm: Log the process id in the rtb



Store the process id in the register trace buffer.
This gives a general idea about what process was last
running when the RTB stopped.

Change-Id: Idcbd8db9eb451f2d732c935f00b6c50f9af3c592
Signed-off-by: Se Wang (Patrick) Oh <sewango@codeaurora.org>
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>

parent cbfb9620

arch/arm64/include/asm/mmu_context.h

+7 −1

Original line number	Diff line number	Diff line
		@@ -34,14 +34,20 @@
		#include <asm/pgtable.h>
		#include <asm/sysreg.h>
		#include <asm/tlbflush.h>
		#include <linux/msm_rtb.h>

		static inline void contextidr_thread_switch(struct task_struct *next)
		{
		pid_t pid = task_pid_nr(next);

		if (!IS_ENABLED(CONFIG_PID_IN_CONTEXTIDR))
		return;

		write_sysreg(task_pid_nr(next), contextidr_el1);
		write_sysreg(pid, contextidr_el1);
		isb();

		uncached_logk(LOGK_CTXID, (void *)(u64)pid);

		}

		/*