Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a5eb013b authored by Huang Yiwei's avatar Huang Yiwei
Browse files

pstore: Register pstore reserved memory into Minidump 



Register pstore reserved memory into Minidump to dump
the content in pstore when crash happens.

Change-Id: Ibc86c388715f53887362c9bacea4eb0217e89253
Signed-off-by: default avatarHuang Yiwei <hyiwei@codeaurora.org>
parent 4027c201

fs/pstore/ram.c

+51 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <linux/pstore_ram.h>

#include <linux/of.h>

#include <linux/of_address.h>

#include <soc/qcom/minidump.h>



#define RAMOOPS_KERNMSG_HDR "===="

#define MIN_MEM_SIZE 4096UL
@@ -97,6 +98,54 @@ struct ramoops_context { 


static struct platform_device *dummy;



static void register_minidump(struct ramoops_context *cxt)

{

	int i;

	struct md_region pstore_entry;

	struct persistent_ram_zone *prz;



	for (i = 0; i < cxt->max_dump_cnt; i++) {

		prz = cxt->dprzs[i];

		scnprintf(pstore_entry.name, sizeof(pstore_entry.name),

				"KDMESG%d", i);

		pstore_entry.virt_addr = (u64)(prz->vaddr);

		pstore_entry.phys_addr = prz->paddr;

		pstore_entry.size = prz->size;

		if (msm_minidump_add_region(&pstore_entry) < 0)

			pr_err("failed to add dmesg in minidump\n");

	}

	if (cxt->console_size) {

		prz = cxt->cprz;

		strlcpy(pstore_entry.name, "KCONSOLE",

				sizeof(pstore_entry.name));

		pstore_entry.virt_addr = (u64)(prz->vaddr);

		pstore_entry.phys_addr = prz->paddr;

		pstore_entry.size = prz->size;

		if (msm_minidump_add_region(&pstore_entry) < 0)

			pr_err("failed to add console in minidump\n");

	}

	for (i = 0; i < cxt->max_ftrace_cnt; i++) {

		prz = cxt->fprzs[i];

		scnprintf(pstore_entry.name, sizeof(pstore_entry.name),

				"KFTRACE%d", i);

		pstore_entry.virt_addr = (u64)(prz->vaddr);

		pstore_entry.phys_addr = prz->paddr;

		pstore_entry.size = prz->size;

		if (msm_minidump_add_region(&pstore_entry) < 0)

			pr_err("failed to add ftrace in minidump\n");

	}

	if (cxt->pmsg_size) {

		prz = cxt->mprz;

		strlcpy(pstore_entry.name, "KPMSG",

				sizeof(pstore_entry.name));

		pstore_entry.virt_addr = (u64)(prz->vaddr);

		pstore_entry.phys_addr = prz->paddr;

		pstore_entry.size = prz->size;

		if (msm_minidump_add_region(&pstore_entry) < 0)

			pr_err("failed to add pmsg in minidump\n");

	}

}



static int ramoops_pstore_open(struct pstore_info *psi)

{

	struct ramoops_context *cxt = psi->data;
@@ -874,6 +923,8 @@ static int ramoops_probe(struct platform_device *pdev) 
		cxt->size, (unsigned long long)cxt->phys_addr,

		cxt->ecc_info.ecc_size);



	register_minidump(cxt);



	return 0;



fail_buf: