#undef TRACE_SYSTEM
#define TRACE_SYSTEM sock

#if !defined(_TRACE_SOCK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SOCK_H

#include <net/sock.h>
#include <linux/tracepoint.h>

TRACE_EVENT(sock_rcvqueue_full,

	TP_PROTO(struct sock *sk, struct sk_buff *skb),

	TP_ARGS(sk, skb),

	TP_STRUCT__entry(
		__field(int, rmem_alloc)
		__field(unsigned int, truesize)
		__field(int, sk_rcvbuf)
	),

	TP_fast_assign(
		__entry->rmem_alloc = atomic_read(&sk->sk_rmem_alloc);
		__entry->truesize   = skb->truesize;
		__entry->sk_rcvbuf  = sk->sk_rcvbuf;
	),

	TP_printk("rmem_alloc=%d truesize=%u sk_rcvbuf=%d",
		__entry->rmem_alloc, __entry->truesize, __entry->sk_rcvbuf)
);

TRACE_EVENT(sock_exceed_buf_limit,

	TP_PROTO(struct sock *sk, struct proto *prot, long allocated),

	TP_ARGS(sk, prot, allocated),

	TP_STRUCT__entry(
		__array(char, name, 32)
		__field(long *, sysctl_mem)
		__field(long, allocated)
		__field(int, sysctl_rmem)
		__field(int, rmem_alloc)
	),

	TP_fast_assign(
		strncpy(__entry->name, prot->name, 32);
		__entry->sysctl_mem = prot->sysctl_mem;
		__entry->allocated = allocated;
		__entry->sysctl_rmem = prot->sysctl_rmem[0];
		__entry->rmem_alloc = atomic_read(&sk->sk_rmem_alloc);
	),

	TP_printk("proto:%s sysctl_mem=%ld,%ld,%ld allocated=%ld "
		"sysctl_rmem=%d rmem_alloc=%d",
		__entry->name,
		__entry->sysctl_mem[0],
		__entry->sysctl_mem[1],
		__entry->sysctl_mem[2],
		__entry->allocated,
		__entry->sysctl_rmem,
		__entry->rmem_alloc)
);

#endif /* _TRACE_SOCK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>Documentation</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='f6d7c1b5598b6407c3f1da795dd54acf99c1990c'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Karl Beldan &lt;kbeldan@baylibre.com&gt;</td><td class='right'>2016-08-29 07:45:49 +0000</td></tr>
<tr><th>committer</th><td>Brian Norris &lt;computersforpeace@gmail.com&gt;</td><td class='right'>2016-09-09 19:39:33 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>f6d7c1b5598b6407c3f1da795dd54acf99c1990c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>ce58b3665a858c93eb36830c65730d91c03c1398</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=a93295a7e118b5c58391906e47183775b1eb7cb1'>a93295a7e118b5c58391906e47183775b1eb7cb1</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c&amp;id2=a93295a7e118b5c58391906e47183775b1eb7cb1'>diff</a>)</td></tr></table>
<div class='commit-subject'>mtd: nand: davinci: Reinitialize the HW ECC engine in 4bit hwctl</div><div class='commit-msg'>This fixes subpage writes when using 4-bit HW ECC.

There has been numerous reports about ECC errors with devices using this
driver for a while.  Also the 4-bit ECC has been reported as broken with
subpages in [1] and with 16 bits NANDs in the driver and in mach* board
files both in mainline and in the vendor BSPs.

What I saw with 4-bit ECC on a 16bits NAND (on an LCDK) which got me to
try reinitializing the ECC engine:
- R/W on whole pages properly generates/checks RS code
- try writing the 1st subpage only of a blank page, the subpage is well
  written and the RS code properly generated, re-reading the same page
  the HW detects some ECC error, reading the same page again no ECC
  error is detected

Note that the ECC engine is already reinitialized in the 1-bit case.

Tested on my LCDK with UBI+UBIFS using subpages.
This could potentially get rid of the issue workarounded in [1].

[1] 28c015a9daab ("mtd: davinci-nand: disable subpage write for keystone-nand")

Fixes: 6a4123e581b3 ("mtd: nand: davinci_nand, 4-bit ECC for smallpage")
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Karl Beldan &lt;kbeldan@baylibre.com&gt;
Acked-by: Boris Brezillon &lt;boris.brezillon@free-electrons.com&gt;
Signed-off-by: Brian Norris &lt;computersforpeace@gmail.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f6d7c1b5598b6407c3f1da795dd54acf99c1990c'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>