[LU-4872] add LASSERT and CERROR warnings to checkpatch.pl

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.6.0
• Affects Version/s: Lustre 2.6.0
• Labels: messages
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

Add some scanning for new LASSERT()s, LCONSOLE_*()s, and CERROR()s to checkpatch.pl. So that for a change like:

diff --git a/lustre/llite/file.c b/lustre/llite/file.c
index e92a510..b0177e3 100644
--- a/lustre/llite/file.c
+++ b/lustre/llite/file.c
@@ -55,8 +55,13 @@ struct ll_file_data *ll_file_data_get(void)
        struct ll_file_data *fd;
 
        OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, GFP_NOFS);
+
+       LASSERT(fd != NULL);
+
+       CERROR("fd = %p\n", fd);
+
        if (fd == NULL)
-               return NULL;
+               LCONSOLE_ERROR("NULL fd! Add more memory?\n");
 
        fd->fd_write_failed = false;

We get:

WARNING: try to replace LASSERT() with error handling
#42: FILE: lustre/llite/file.c:59:
+	LASSERT(fd != NULL);

WARNING: think hard before adding new CERROR messages
#44: FILE: lustre/llite/file.c:61:
+	CERROR("fd = %p\n", fd);

WARNING: avoid adding new console messages
#48: FILE: lustre/llite/file.c:64:
+		LCONSOLE_ERROR("NULL fd! Add more memory?\n");

total: 0 errors, 3 warnings, 41 lines checked

Your patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Issue Links

• is related to: LU-1095 Console message cleanup