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authorRishabh Bhatnagar <rishabhb@codeaurora.org>2020-10-02 21:09:03 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2020-10-14 03:22:04 +0300
commitf75c6043a38b89d01dd9ccb0d9cd81c291e04b18 (patch)
tree95d8484f15630c8d104e9af9a345d546ac21f12b /Documentation/ABI/testing
parentbf41a0910cb2dd06abd4d6a920edcee798460ad7 (diff)
downloadlinux-f75c6043a38b89d01dd9ccb0d9cd81c291e04b18.tar.xz
remoteproc: Add coredump as part of sysfs interface
Add coredump as part of the sysfs interface. This will allow usage of this configuration feature in production devices where access to debugfs might be limited. Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org> Link: https://lore.kernel.org/r/1601662144-5964-3-git-send-email-rishabhb@codeaurora.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'Documentation/ABI/testing')
-rw-r--r--Documentation/ABI/testing/sysfs-class-remoteproc24
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-remoteproc b/Documentation/ABI/testing/sysfs-class-remoteproc
index 36094fbeb974..050bd25aaa15 100644
--- a/Documentation/ABI/testing/sysfs-class-remoteproc
+++ b/Documentation/ABI/testing/sysfs-class-remoteproc
@@ -58,3 +58,27 @@ Description: Remote processor name
Reports the name of the remote processor. This can be used by
userspace in exactly identifying a remote processor and ease
up the usage in modifying the 'firmware' or 'state' files.
+
+What: /sys/class/remoteproc/.../coredump
+Date: July 2020
+Contact: Bjorn Andersson <bjorn.andersson@linaro.org>, Ohad Ben-Cohen <ohad@wizery.com>
+Description: Remote processor coredump configuration
+
+ Reports the coredump configuration of the remote processor,
+ which will be one of:
+
+ "disabled"
+ "enabled"
+ "inline"
+
+ "disabled" means no dump will be collected.
+
+ "enabled" means when the remote processor's coredump is
+ collected it will be copied to a separate buffer and that
+ buffer is exposed to userspace.
+
+ "inline" means when the remote processor's coredump is
+ collected userspace will directly read from the remote
+ processor's device memory. Extra buffer will not be used to
+ copy the dump. Also recovery process will not proceed until
+ all data is read by usersapce.