120 lines
3.8 KiB
Diff
120 lines
3.8 KiB
Diff
From efb2d05f214542f105b831807c676dedc74f0e4c Mon Sep 17 00:00:00 2001
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Message-Id: <efb2d05f214542f105b831807c676dedc74f0e4c.1601675152.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Sat, 12 Nov 2011 14:00:48 +0100
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Subject: [PATCH 219/333] scsi/fcoe: Make RT aware.
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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Do not disable preemption while taking sleeping locks. All user look safe
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for migrate_diable() only.
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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drivers/scsi/fcoe/fcoe.c | 16 ++++++++--------
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drivers/scsi/fcoe/fcoe_ctlr.c | 4 ++--
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drivers/scsi/libfc/fc_exch.c | 4 ++--
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3 files changed, 12 insertions(+), 12 deletions(-)
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diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
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index 6768b2e8148a..c20f51af6bdf 100644
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--- a/drivers/scsi/fcoe/fcoe.c
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+++ b/drivers/scsi/fcoe/fcoe.c
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@@ -1459,11 +1459,11 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
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static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen)
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{
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struct fcoe_percpu_s *fps;
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- int rc;
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+ int rc, cpu = get_cpu_light();
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- fps = &get_cpu_var(fcoe_percpu);
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+ fps = &per_cpu(fcoe_percpu, cpu);
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rc = fcoe_get_paged_crc_eof(skb, tlen, fps);
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- put_cpu_var(fcoe_percpu);
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+ put_cpu_light();
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return rc;
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}
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@@ -1650,11 +1650,11 @@ static inline int fcoe_filter_frames(struct fc_lport *lport,
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return 0;
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}
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- stats = per_cpu_ptr(lport->stats, get_cpu());
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+ stats = per_cpu_ptr(lport->stats, get_cpu_light());
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stats->InvalidCRCCount++;
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if (stats->InvalidCRCCount < 5)
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printk(KERN_WARNING "fcoe: dropping frame with CRC error\n");
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- put_cpu();
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+ put_cpu_light();
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return -EINVAL;
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}
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@@ -1697,7 +1697,7 @@ static void fcoe_recv_frame(struct sk_buff *skb)
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*/
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hp = (struct fcoe_hdr *) skb_network_header(skb);
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- stats = per_cpu_ptr(lport->stats, get_cpu());
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+ stats = per_cpu_ptr(lport->stats, get_cpu_light());
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if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) {
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if (stats->ErrorFrames < 5)
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printk(KERN_WARNING "fcoe: FCoE version "
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@@ -1729,13 +1729,13 @@ static void fcoe_recv_frame(struct sk_buff *skb)
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goto drop;
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if (!fcoe_filter_frames(lport, fp)) {
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- put_cpu();
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+ put_cpu_light();
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fc_exch_recv(lport, fp);
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return;
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}
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drop:
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stats->ErrorFrames++;
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- put_cpu();
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+ put_cpu_light();
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kfree_skb(skb);
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}
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diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
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index 658c0726581f..bceab74eecf7 100644
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--- a/drivers/scsi/fcoe/fcoe_ctlr.c
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+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
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@@ -838,7 +838,7 @@ static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
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INIT_LIST_HEAD(&del_list);
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- stats = per_cpu_ptr(fip->lp->stats, get_cpu());
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+ stats = per_cpu_ptr(fip->lp->stats, get_cpu_light());
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list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
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deadline = fcf->time + fcf->fka_period + fcf->fka_period / 2;
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@@ -874,7 +874,7 @@ static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
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sel_time = fcf->time;
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}
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}
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- put_cpu();
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+ put_cpu_light();
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list_for_each_entry_safe(fcf, next, &del_list, list) {
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/* Removes fcf from current list */
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diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
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index 6ba257cbc6d9..d2398a19f84c 100644
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--- a/drivers/scsi/libfc/fc_exch.c
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+++ b/drivers/scsi/libfc/fc_exch.c
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@@ -833,10 +833,10 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
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}
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memset(ep, 0, sizeof(*ep));
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- cpu = get_cpu();
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+ cpu = get_cpu_light();
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pool = per_cpu_ptr(mp->pool, cpu);
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spin_lock_bh(&pool->lock);
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- put_cpu();
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+ put_cpu_light();
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/* peek cache of free slot */
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if (pool->left != FC_XID_UNKNOWN) {
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--
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2.17.1
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