/*
 * call-path.h: Manipulate a tree data structure containing function call paths
 * Copyright (c) 2014, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 */

#ifndef __PERF_CALL_PATH_H
#define __PERF_CALL_PATH_H

#include <sys/types.h>

#include <linux/types.h>
#include <linux/rbtree.h>

/**
 * struct call_path - node in list of calls leading to a function call.
 * @parent: call path to the parent function call
 * @sym: symbol of function called
 * @ip: only if sym is null, the ip of the function
 * @db_id: id used for db-export
 * @in_kernel: whether function is a in the kernel
 * @rb_node: node in parent's tree of called functions
 * @children: tree of call paths of functions called
 *
 * In combination with the call_return structure, the call_path structure
 * defines a context-sensitve call-graph.
 */
struct call_path {
	struct call_path *parent;
	struct symbol *sym;
	u64 ip;
	u64 db_id;
	bool in_kernel;
	struct rb_node rb_node;
	struct rb_root children;
};

#define CALL_PATH_BLOCK_SHIFT 8
#define CALL_PATH_BLOCK_SIZE (1 << CALL_PATH_BLOCK_SHIFT)
#define CALL_PATH_BLOCK_MASK (CALL_PATH_BLOCK_SIZE - 1)

struct call_path_block {
	struct call_path cp[CALL_PATH_BLOCK_SIZE];
	struct list_head node;
};

/**
 * struct call_path_root - root of all call paths.
 * @call_path: root call path
 * @blocks: list of blocks to store call paths
 * @next: next free space
 * @sz: number of spaces
 */
struct call_path_root {
	struct call_path call_path;
	struct list_head blocks;
	size_t next;
	size_t sz;
};

struct call_path_root *call_path_root__new(void);
void call_path_root__free(struct call_path_root *cpr);

struct call_path *call_path__findnew(struct call_path_root *cpr,
				     struct call_path *parent,
				     struct symbol *sym, u64 ip, u64 ks);

#endif
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sched?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>sched</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>sch_choke.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='424414947da3dd5cb0d60e4f299f7c51e472ae77'/><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>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-02-03 22:19:15 +0100</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-02-03 22:19:15 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>424414947da3dd5cb0d60e4f299f7c51e472ae77</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>a4067480c4256c80ae8f8438a3e4bb88e32050bc</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>net/sched/sch_choke.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sched/sch_choke.c?id=a3683e0c1410c5c8136a7a93b0336ce88d3b893a'>a3683e0c1410c5c8136a7a93b0336ce88d3b893a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77&amp;id2=a3683e0c1410c5c8136a7a93b0336ce88d3b893a'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sched/sch_choke.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>d07830db1bdb254e4b50d366010b219286b8c937</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sched/sch_choke.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77&amp;id2=d07830db1bdb254e4b50d366010b219286b8c937'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'usb-serial-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus</div><div class='commit-msg'>Johan writes:

USB-serial fixes for v4.10-rc7

One more device ID for pl2303.

Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>Diffstat</a> (limited to 'net/sched/sch_choke.c')</div><table summary='diffstat' class='diffstat'>