From: Arve Hjønnevåg <arve@android.com>
Date: Sat, 3 May 2014 03:23:21 +0000 (-0700)
Subject: pstore/ram: Add ramoops_console_write_buf api
X-Git-Tag: firefly_0821_release~4090^2~332
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3e966cff406d9b43a16e07291a918cb2a098e32f;p=firefly-linux-kernel-4.4.55.git

pstore/ram: Add ramoops_console_write_buf api

Allow writing into the ramoops console buffer.

Change-Id: Iff0d69b562e4dae33ea7f8d19412227bebb17e47
Signed-off-by: Arve Hjønnevåg <arve@android.com>
---

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 1376e5a8f0d6..058f17f0b466 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -377,6 +377,12 @@ static int ramoops_init_prz(struct device *dev, struct ramoops_context *cxt,
 	return 0;
 }
 
+void notrace ramoops_console_write_buf(const char *buf, size_t size)
+{
+	struct ramoops_context *cxt = &oops_cxt;
+	persistent_ram_write(cxt->cprz, buf, size);
+}
+
 static int ramoops_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h
index 9974975d40db..9e370618352a 100644
--- a/include/linux/pstore_ram.h
+++ b/include/linux/pstore_ram.h
@@ -67,6 +67,8 @@ void persistent_ram_free_old(struct persistent_ram_zone *prz);
 ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
 	char *str, size_t len);
 
+void ramoops_console_write_buf(const char *buf, size_t size);
+
 /*
  * Ramoops platform data
  * @mem_size	memory size for ramoops