#include <linux/ptrace.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"

struct bpf_map_def SEC("maps") my_map = {
	.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
	.key_size = sizeof(int),
	.value_size = sizeof(u32),
	.max_entries = 32,
};

SEC("kprobe/sys_write")
int bpf_prog1(struct pt_regs *ctx)
{
	u64 count;
	u32 key = bpf_get_smp_processor_id();
	char fmt[] = "CPU-%d   %llu\n";

	count = bpf_perf_event_read(&my_map, key);
	bpf_trace_printk(fmt, sizeof(fmt), key, count);

	return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
<table id='header'>
<tr>
<td class='logo' rowspan='2'><a href='/cgit.cgi/'><img src='/cgit.png' alt='cgit logo'/></a></td>
<td class='main'><a href='/cgit.cgi/'>index</a> : <a href='/cgit.cgi/linux/net-next.git/'>net-next.git</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='56e3d92ddb97d9584622b29d4ecb268e30242b1e'/><select name='h' onchange='this.form.submit();'>
<option value='emaclite-cleanup'>emaclite-cleanup</option>
<option value='master'>master</option>
<option value='nds-private-remove' selected='selected'>nds-private-remove</option>
<option value='packet-loop-back'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/chipidea/Makefile?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/chipidea/Makefile?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/chipidea/Makefile?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>commit</a><a class='active' href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/chipidea/Makefile?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/chipidea/Makefile'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='56e3d92ddb97d9584622b29d4ecb268e30242b1e'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/chipidea?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>chipidea</a>/<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/chipidea/Makefile?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='56e3d92ddb97d9584622b29d4ecb268e30242b1e'/><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><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=56e3d92ddb97d9584622b29d4ecb268e30242b1e'>Diffstat</a> (limited to 'drivers/usb/chipidea/Makefile')</div><table summary='diffstat' class='diffstat'>