#include <stdbool.h>
#include <errno.h>

#include <linux/perf_event.h>

#include "../../perf.h"
#include <linux/types.h>
#include "../../util/debug.h"
#include "../../util/tsc.h"

int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
			     struct perf_tsc_conversion *tc)
{
	bool cap_user_time_zero;
	u32 seq;
	int i = 0;

	while (1) {
		seq = pc->lock;
		rmb();
		tc->time_mult = pc->time_mult;
		tc->time_shift = pc->time_shift;
		tc->time_zero = pc->time_zero;
		cap_user_time_zero = pc->cap_user_time_zero;
		rmb();
		if (pc->lock == seq && !(seq & 1))
			break;
		if (++i > 10000) {
			pr_debug("failed to get perf_event_mmap_page lock\n");
			return -EINVAL;
		}
	}

	if (!cap_user_time_zero)
		return -EOPNOTSUPP;

	return 0;
}

u64 rdtsc(void)
{
	unsigned int low, high;

	asm volatile("rdtsc" : "=a" (low), "=d" (high));

	return low | ((u64)high) << 32;
}

int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc,
				struct perf_tool *tool,
				perf_event__handler_t process,
				struct machine *machine)
{
	union perf_event event = {
		.time_conv = {
			.header = {
				.type = PERF_RECORD_TIME_CONV,
				.size = sizeof(struct time_conv_event),
			},
		},
	};
	struct perf_tsc_conversion tc;
	int err;

	if (!pc)
		return 0;
	err = perf_read_tsc_conversion(pc, &tc);
	if (err == -EOPNOTSUPP)
		return 0;
	if (err)
		return err;

	pr_debug2("Synthesizing TSC conversion information\n");

	event.time_conv.time_mult  = tc.time_mult;
	event.time_conv.time_shift = tc.time_shift;
	event.time_conv.time_zero  = tc.time_zero;

	return process(tool, &event, NULL, machine);
}
d>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>include</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/net?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>net</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/net/protocol.h?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>protocol.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3ebc7033168d43d12e4941f48a6f257d3f1ea1b5'/><input type='hidden' name='id2' value='f83e6862047e1e371bdc5d512dd6cabe8a3965b8'/><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/?id=3ebc7033168d43d12e4941f48a6f257d3f1ea1b5&amp;id2=f83e6862047e1e371bdc5d512dd6cabe8a3965b8'>Diffstat</a> (limited to 'include/net/protocol.h')</div><table summary='diffstat' class='diffstat'>/linux/net-next.git/commit/sound/pci/ac97?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>396bf4cd835e62d70fad4a03a8963e61f19021f2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/ac97?id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>patch</a>)</td></tr>
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<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:

 - use-after-free in algif_aead

 - modular aesni regression when pcbc is modular but absent

 - bug causing IO page faults in ccp

 - double list add in ccp

 - NULL pointer dereference in qat (two patches)

 - panic in chcr

 - NULL pointer dereference in chcr

 - out-of-bound access in chcr

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: chcr - Fix key length for RFC4106
  crypto: algif_aead - Fix kernel panic on list_del
  crypto: aesni - Fix failure when pcbc module is absent
  crypto: ccp - Fix double add when creating new DMA command
  crypto: ccp - Fix DMA operations when IOMMU is enabled
  crypto: chcr - Check device is allocated before use
  crypto: chcr - Fix panic on dma_unmap_sg
  crypto: qat - zero esram only for DH85x devices
  crypto: qat - fix bar discovery for c62x
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>Diffstat</a> (limited to 'sound/pci/ac97')</div><table summary='diffstat' class='diffstat'>