linux-kernel - [PATCH v10 2/6] seq_buf: Export seq_buf

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Date:   Fri,  5 Jun 2020 05:11:32 +0530
From:   Vaibhav Jain <vaibhav@...ux.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org, linux-nvdimm@...ts.01.org,
        linux-kernel@...r.kernel.org
Cc:     Vaibhav Jain <vaibhav@...ux.ibm.com>,
        Dan Williams <dan.j.williams@...el.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Santosh Sivaraj <santosh@...six.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Piotr Maziarz <piotrx.maziarz@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Christoph Hellwig <hch@...radead.org>,
        Borislav Petkov <bp@...en8.de>
Subject: [PATCH v10 2/6] seq_buf: Export seq_buf_printf

'seq_buf' provides a very useful abstraction for writing to a string
buffer without needing to worry about it over-flowing. However even
though the API has been stable for couple of years now its still not
exported to kernel loadable modules limiting its usage.

Hence this patch proposes update to 'seq_buf.c' to mark
seq_buf_printf() which is part of the seq_buf API to be exported to
kernel loadable GPL modules. This symbol will be used in later parts
of this patch-set to simplify content creation for a sysfs attribute.

Cc: Piotr Maziarz <piotrx.maziarz@...ux.intel.com>
Cc: Cezary Rojewski <cezary.rojewski@...el.com>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Borislav Petkov <bp@...en8.de>
Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Vaibhav Jain <vaibhav@...ux.ibm.com>
---
Changelog:

v9..v10:
* None

Resend:
* Added ack from Steven Rostedt

v8..v9:
* None

v7..v8:
* Updated the patch title [ Christoph Hellwig ]
* Updated patch description to replace confusing term 'external kernel
  modules' to 'kernel lodable modules'.

Resend:
* Added ack from Steven Rostedt

v6..v7:
* New patch in the series
---
 lib/seq_buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/seq_buf.c b/lib/seq_buf.c
index 4e865d42ab03..707453f5d58e 100644
--- a/lib/seq_buf.c
+++ b/lib/seq_buf.c
@@ -91,6 +91,7 @@ int seq_buf_printf(struct seq_buf *s, const char *fmt, ...)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(seq_buf_printf);
 
 #ifdef CONFIG_BINARY_PRINTF
 /**
-- 
2.26.2