/*
 * perf_hooks.c
 *
 * Copyright (C) 2016 Wang Nan <wangnan0@huawei.com>
 * Copyright (C) 2016 Huawei Inc.
 */

#include <errno.h>
#include <stdlib.h>
#include <setjmp.h>
#include <linux/err.h>
#include "util/util.h"
#include "util/debug.h"
#include "util/perf-hooks.h"

static sigjmp_buf jmpbuf;
static const struct perf_hook_desc *current_perf_hook;

void perf_hooks__invoke(const struct perf_hook_desc *desc)
{
	if (!(desc && desc->p_hook_func && *desc->p_hook_func))
		return;

	if (sigsetjmp(jmpbuf, 1)) {
		pr_warning("Fatal error (SEGFAULT) in perf hook '%s'\n",
			   desc->hook_name);
		*(current_perf_hook->p_hook_func) = NULL;
	} else {
		current_perf_hook = desc;
		(**desc->p_hook_func)(desc->hook_ctx);
	}
	current_perf_hook = NULL;
}

void perf_hooks__recover(void)
{
	if (current_perf_hook)
		siglongjmp(jmpbuf, 1);
}

#define PERF_HOOK(name)					\
perf_hook_func_t __perf_hook_func_##name = NULL;	\
struct perf_hook_desc __perf_hook_desc_##name =		\
	{.hook_name = #name,				\
	 .p_hook_func = &__perf_hook_func_##name,	\
	 .hook_ctx = NULL};
#include "perf-hooks-list.h"
#undef PERF_HOOK

#define PERF_HOOK(name)		\
	&__perf_hook_desc_##name,

static struct perf_hook_desc *perf_hooks[] = {
#include "perf-hooks-list.h"
};
#undef PERF_HOOK

int perf_hooks__set_hook(const char *hook_name,
			 perf_hook_func_t hook_func,
			 void *hook_ctx)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) {
		if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0)
			continue;

		if (*(perf_hooks[i]->p_hook_func))
			pr_warning("Overwrite existing hook: %s\n", hook_name);
		*(perf_hooks[i]->p_hook_func) = hook_func;
		perf_hooks[i]->hook_ctx = hook_ctx;
		return 0;
	}
	return -ENOENT;
}

perf_hook_func_t perf_hooks__get_hook(const char *hook_name)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) {
		if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0)
			continue;

		return *(perf_hooks[i]->p_hook_func);
	}
	return ERR_PTR(-ENOENT);
}
fa104f514da6ef61d90f5bf93488e3'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/trace'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/tree/?id=8fe89ef076fa104f514da6ef61d90f5bf93488e3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/tree/include?id=8fe89ef076fa104f514da6ef61d90f5bf93488e3'>include</a>/<a href='/cgit.cgi/linux/net-next.git/tree/include/trace?id=8fe89ef076fa104f514da6ef61d90f5bf93488e3'>trace</a></div><div class='content'><table summary='tree listing' class='list'>
<tr class='nohover'><th class='left'>Mode</th><th class='left'>Name</th><th class='right'>Size</th><th/></tr>
href='/cgit.cgi/linux/net-next.git/diff/net/bluetooth/bnep/core.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>core.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0becc0ae5b42828785b589f686725ff5bc3b9b25'/><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=0becc0ae5b42828785b589f686725ff5bc3b9b25'>Diffstat</a> (limited to 'net/bluetooth/bnep/core.c')</div><table summary='diffstat' class='diffstat'>nchange='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>Nicolae Rosia &lt;Nicolae_Rosia@mentor.com&gt;</td><td class='right'>2016-11-12 14:42:14 +0200</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-11-16 18:03:39 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/Documentation/manpage-bold-literal.xsl?h=nds-private-remove&amp;id=dab780a3b489b038a47d8fbbc49c33aae1e7a682'>dab780a3b489b038a47d8fbbc49c33aae1e7a682</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/Documentation/manpage-bold-literal.xsl?id=dab780a3b489b038a47d8fbbc49c33aae1e7a682'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=dab780a3b489b038a47d8fbbc49c33aae1e7a682'>c9599a6970c187f95f7875d2a3e948f05cef1e45</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/Documentation/manpage-bold-literal.xsl?h=nds-private-remove&amp;id=dab780a3b489b038a47d8fbbc49c33aae1e7a682'>tools/perf/Documentation/manpage-bold-literal.xsl</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/Documentation/manpage-bold-literal.xsl?h=nds-private-remove&amp;id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/Documentation/manpage-bold-literal.xsl?h=nds-private-remove&amp;id=dab780a3b489b038a47d8fbbc49c33aae1e7a682&amp;id2=1001354ca34179f3db924eb66672442a173147dc'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: twl-regulator: rework fixed regulator definition</div><div class='commit-msg'>TWL603X and TWL4030 are different and have different code logic.
Rework the regulator definition method so we can split the file
easily in twl4030 and twl6030.

Signed-off-by: Nicolae Rosia &lt;Nicolae_Rosia@mentor.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=dab780a3b489b038a47d8fbbc49c33aae1e7a682'>Diffstat</a> (limited to 'tools/perf/Documentation/manpage-bold-literal.xsl')</div><table summary='diffstat' class='diffstat'>