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[RFC PATCH 4/8] seq_buf: Add seq_buf_clear_buf()

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From: Borislav Petkov <bp@suse.de>

This is the version which clears the supplied buffer too. Useful when
we're done with the buffer and want to clean it up and prepare it for
reuse.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
---
 include/linux/seq_buf.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h
index fb7eb9ccb1cd..8705a482e76c 100644
--- a/include/linux/seq_buf.h
+++ b/include/linux/seq_buf.h
@@ -28,6 +28,13 @@ static inline void seq_buf_clear(struct seq_buf *s)
 	s->readpos = 0;
 }
 
+/* Like seq_buf_clear() but zero out the buffer too. */
+static inline void seq_buf_clear_buf(struct seq_buf *s)
+{
+	seq_buf_clear(s);
+	memset(s->buffer, 0, s->size);
+}
+
 static inline void
 seq_buf_init(struct seq_buf *s, unsigned char *buf, unsigned int size)
 {
-- 
2.14.0.rc0

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[RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded error Borislav Petkov <bp@alien8.de> - 2017-07-25 17:50 +0200
  [RFC PATCH 4/8] seq_buf: Add seq_buf_clear_buf() Borislav Petkov <bp@alien8.de> - 2017-07-25 17:50 +0200
    Re: [RFC PATCH 4/8] seq_buf: Add seq_buf_clear_buf() Steven Rostedt <rostedt@goodmis.org> - 2017-07-28 03:50 +0200
  [RFC PATCH 1/8] EDAC, mce_amd: Rename decode_smca_errors() to decode_smca_error() Borislav Petkov <bp@alien8.de> - 2017-07-25 17:50 +0200
  [RFC PATCH 3/8] EDAC, mce_amd: Get rid of local var in amd_filter_mce() Borislav Petkov <bp@alien8.de> - 2017-07-25 17:50 +0200
  [RFC PATCH 8/8] EDAC, mce_amd: Issue the decoded info through the TP or printk Borislav Petkov <bp@alien8.de> - 2017-07-25 18:00 +0200
  [RFC PATCH 5/8] seq_buf: Export seq_buf_printf() to modules Borislav Petkov <bp@alien8.de> - 2017-07-25 18:00 +0200
    Re: [RFC PATCH 5/8] seq_buf: Export seq_buf_printf() to modules Steven Rostedt <rostedt@goodmis.org> - 2017-07-28 03:50 +0200
  [RFC PATCH 7/8] EDAC, mce_amd: Add a simple tracepoint dumping a decoded string Borislav Petkov <bp@alien8.de> - 2017-07-25 18:00 +0200
    Re: [RFC PATCH 7/8] EDAC, mce_amd: Add a simple tracepoint dumping  a decoded string Steven Rostedt <rostedt@goodmis.org> - 2017-07-28 03:50 +0200
      Re: [RFC PATCH 7/8] EDAC, mce_amd: Add a simple tracepoint dumping a  decoded string Borislav Petkov <bp@alien8.de> - 2017-07-28 09:20 +0200
  [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Borislav Petkov <bp@alien8.de> - 2017-07-25 18:00 +0200
    Re: [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Steven Rostedt <rostedt@goodmis.org> - 2017-07-28 03:50 +0200
      Re: [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Borislav Petkov <bp@alien8.de> - 2017-07-28 09:20 +0200
        Re: [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Borislav Petkov <bp@alien8.de> - 2017-07-28 13:00 +0200
          Re: [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Steven Rostedt <rostedt@goodmis.org> - 2017-07-28 15:10 +0200
            Re: [RFC PATCH 6/8] EDAC, mce_amd: Convert to seq_buf Borislav Petkov <bp@alien8.de> - 2017-07-28 16:20 +0200
  Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Ingo Molnar <mingo@kernel.org> - 2017-07-27 09:20 +0200
    Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-27 10:00 +0200
      Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Ingo Molnar <mingo@kernel.org> - 2017-07-27 10:40 +0200
        Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-27 15:10 +0200
          Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Ingo Molnar <mingo@kernel.org> - 2017-07-28 08:40 +0200
            Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-28 09:20 +0200
              Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-28 17:10 +0200
                Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-28 17:40 +0200
      RE: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error "Luck, Tony" <tony.luck@intel.com> - 2017-07-27 18:50 +0200
        Re: [RFC PATCH 0/8] EDAC, mce_amd: Add a tracepoint for the decoded  error Borislav Petkov <bp@alien8.de> - 2017-07-28 09:30 +0200

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