/*
 * procfs-based user access to knfsd statistics
 *
 * /proc/net/rpc/nfsd
 *
 * Format:
 *	rc <hits> <misses> <nocache>
 *			Statistsics for the reply cache
 *	fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
 *			statistics for filehandle lookup
 *	io <bytes-read> <bytes-written>
 *			statistics for IO throughput
 *	th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%> 
 *			time (seconds) when nfsd thread usage above thresholds
 *			and number of times that all threads were in use
 *	ra cache-size  <10%  <20%  <30% ... <100% not-found
 *			number of times that read-ahead entry was found that deep in
 *			the cache.
 *	plus generic RPC stats (see net/sunrpc/stats.c)
 *
 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
 */

#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/sunrpc/stats.h>
#include <net/net_namespace.h>

#include "nfsd.h"

struct nfsd_stats	nfsdstats;
struct svc_stat		nfsd_svcstats = {
	.program	= &nfsd_program,
};

static int nfsd_proc_show(struct seq_file *seq, void *v)
{
	int i;

	seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
		      nfsdstats.rchits,
		      nfsdstats.rcmisses,
		      nfsdstats.rcnocache,
		      nfsdstats.fh_stale,
		      nfsdstats.fh_lookup,
		      nfsdstats.fh_anon,
		      nfsdstats.fh_nocache_dir,
		      nfsdstats.fh_nocache_nondir,
		      nfsdstats.io_read,
		      nfsdstats.io_write);
	/* thread usage: */
	seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
	for (i=0; i<10; i++) {
		unsigned int jifs = nfsdstats.th_usage[i];
		unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
		seq_printf(seq, " %u.%03u", sec, msec);
	}

	/* newline and ra-cache */
	seq_printf(seq, "\nra %u", nfsdstats.ra_size);
	for (i=0; i<11; i++)
		seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
	seq_putc(seq, '\n');
	
	/* show my rpc info */
	svc_seq_show(seq, &nfsd_svcstats);

#ifdef CONFIG_NFSD_V4
	/* Show count for individual nfsv4 operations */
	/* Writing operation numbers 0 1 2 also for maintaining uniformity */
	seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
	for (i = 0; i <= LAST_NFS4_OP; i++)
		seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);

	seq_putc(seq, '\n');
#endif

	return 0;
}

static int nfsd_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, nfsd_proc_show, NULL);
}

static const struct file_operations nfsd_proc_fops = {
	.open = nfsd_proc_open,
	.read  = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

void
nfsd_stat_init(void)
{
	svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_fops);
}

void
nfsd_stat_shutdown(void)
{
	svc_proc_unregister(&init_net, "nfsd");
}
b16b83e8adf5c48c421a4ca76468'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>tipc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='dd86e373e09fb16b83e8adf5c48c421a4ca76468'/><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 23:58:38 +0100</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-02-01 08:37:27 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>dd86e373e09fb16b83e8adf5c48c421a4ca76468</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/tipc/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>55703c2ea8584e303e342090614e0aab3509ab21</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/tipc/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>net/tipc/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=0b3589be9b98994ce3d5aeca52445d1f5627c4ba'>0b3589be9b98994ce3d5aeca52445d1f5627c4ba</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/tipc/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468&amp;id2=0b3589be9b98994ce3d5aeca52445d1f5627c4ba'>diff</a>)</td></tr></table>
<div class='commit-subject'>perf/x86/intel/rapl: Make package handling more robust</div><div class='commit-msg'>The package management code in RAPL relies on package mapping being
available before a CPU is started. This changed with:

  9d85eb9119f4 ("x86/smpboot: Make logical package management more robust")

because the ACPI/BIOS information turned out to be unreliable, but that
left RAPL in broken state. This was not noticed because on a regular boot
all CPUs are online before RAPL is initialized.

A possible fix would be to reintroduce the mess which allocates a package
data structure in CPU prepare and when it turns out to already exist in
starting throw it away later in the CPU online callback. But that's a
horrible hack and not required at all because RAPL becomes functional for
perf only in the CPU online callback. That's correct because user space is
not yet informed about the CPU being onlined, so nothing caan rely on RAPL
being available on that particular CPU.

Move the allocation to the CPU online callback and simplify the hotplug
handling. At this point the package mapping is established and correct.

This also adds a missing check for available package data in the
event_init() function.

Reported-by: Yasuaki Ishimatsu &lt;yasu.isimatu@gmail.com&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Jiri Olsa &lt;jolsa@redhat.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Sebastian Siewior &lt;bigeasy@linutronix.de&gt;
Cc: Stephane Eranian &lt;eranian@google.com&gt;
Cc: Vince Weaver &lt;vincent.weaver@maine.edu&gt;
Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust")
Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>Diffstat</a> (limited to 'net/tipc/Makefile')</div><table summary='diffstat' class='diffstat'>