#ifndef BPF_INSNS_H
#define BPF_INSNS_H

#ifndef BPF_MAXINSNS
# define BPF_MAXINSNS	4096
#endif

#define BPF_CLASS(code) ((code) & 0x07)
#define	BPF_LD		0x00
#define	BPF_LDX		0x01
#define	BPF_ST		0x02
#define	BPF_STX		0x03
#define	BPF_ALU		0x04
#define	BPF_JMP		0x05
#define	BPF_RET		0x06
#define	BPF_MISC	0x07

#define BPF_SIZE(code)	((code) & 0x18)
#define	BPF_W		0x00
#define	BPF_H		0x08
#define	BPF_B		0x10

#define BPF_MODE(code)	((code) & 0xe0)
#define	BPF_IMM 	0x00
#define	BPF_ABS		0x20
#define	BPF_IND		0x40
#define	BPF_MEM		0x60
#define	BPF_LEN		0x80
#define	BPF_MSH		0xa0

#define BPF_OP(code)	((code) & 0xf0)
#define	BPF_ADD		0x00
#define	BPF_SUB		0x10
#define	BPF_MUL		0x20
#define	BPF_DIV		0x30
#define	BPF_OR		0x40
#define	BPF_AND		0x50
#define	BPF_LSH		0x60
#define	BPF_RSH		0x70
#define	BPF_NEG		0x80
#define BPF_MOD		0x90
#define	BPF_XOR		0xa0

#define	BPF_JA		0x00
#define	BPF_JEQ		0x10
#define	BPF_JGT		0x20
#define	BPF_JGE		0x30
#define	BPF_JSET	0x40

#define BPF_SRC(code)	((code) & 0x08)
#define	BPF_K		0x00
#define	BPF_X		0x08

/* ret - BPF_K and BPF_X also apply */
#define BPF_RVAL(code)	((code) & 0x18)
#define	BPF_A		0x10

#define BPF_MISCOP(code) ((code) & 0xf8)
#define	BPF_TAX		0x00
#define	BPF_TXA		0x80

#endif /* BPF_INSNS_H */
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<tr><th>author</th><td>Mel Gorman &lt;mgorman@techsingularity.net&gt;</td><td class='right'>2016-05-19 17:14:07 -0700</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-05-19 19:12:14 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=48ee5f3696f62496481a8b6d852bcad9b3ebbe37'>48ee5f3696f62496481a8b6d852bcad9b3ebbe37</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=48ee5f3696f62496481a8b6d852bcad9b3ebbe37'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=48ee5f3696f62496481a8b6d852bcad9b3ebbe37'>eb1e565fc450a9dd33df210bbb37c471b00cb53a</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=305347550becd08fdb576df32fc0767842ed71a6'>305347550becd08fdb576df32fc0767842ed71a6</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=48ee5f3696f62496481a8b6d852bcad9b3ebbe37&amp;id2=305347550becd08fdb576df32fc0767842ed71a6'>diff</a>)</td></tr></table>
<div class='commit-subject'>mm, page_alloc: shortcut watermark checks for order-0 pages</div><div class='commit-msg'>Watermarks have to be checked on every allocation including the number
of pages being allocated and whether reserves can be accessed.  The
reserves only matter if memory is limited and the free_pages adjustment
only applies to high-order pages.  This patch adds a shortcut for
order-0 pages that avoids numerous calculations if there is plenty of
free memory yielding the following performance difference in a page
allocator microbenchmark;

                                             4.6.0-rc2                  4.6.0-rc2
                                         optfair-v1r20             fastmark-v1r20
  Min      alloc-odr0-1               380.00 (  0.00%)           364.00 (  4.21%)
  Min      alloc-odr0-2               273.00 (  0.00%)           262.00 (  4.03%)
  Min      alloc-odr0-4               227.00 (  0.00%)           214.00 (  5.73%)
  Min      alloc-odr0-8               196.00 (  0.00%)           186.00 (  5.10%)
  Min      alloc-odr0-16              183.00 (  0.00%)           173.00 (  5.46%)
  Min      alloc-odr0-32              173.00 (  0.00%)           165.00 (  4.62%)
  Min      alloc-odr0-64              169.00 (  0.00%)           161.00 (  4.73%)
  Min      alloc-odr0-128             169.00 (  0.00%)           159.00 (  5.92%)
  Min      alloc-odr0-256             180.00 (  0.00%)           168.00 (  6.67%)
  Min      alloc-odr0-512             190.00 (  0.00%)           180.00 (  5.26%)
  Min      alloc-odr0-1024            198.00 (  0.00%)           190.00 (  4.04%)
  Min      alloc-odr0-2048            204.00 (  0.00%)           196.00 (  3.92%)
  Min      alloc-odr0-4096            209.00 (  0.00%)           202.00 (  3.35%)
  Min      alloc-odr0-8192            213.00 (  0.00%)           206.00 (  3.29%)
  Min      alloc-odr0-16384           214.00 (  0.00%)           206.00 (  3.74%)

Signed-off-by: Mel Gorman &lt;mgorman@techsingularity.net&gt;
Acked-by: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Cc: Jesper Dangaard Brouer &lt;brouer@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=48ee5f3696f62496481a8b6d852bcad9b3ebbe37'>Diffstat</a></div><table summary='diffstat' class='diffstat'>