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Message-ID: <20171025102543.GA145788@beast>
Date: Wed, 25 Oct 2017 03:25:43 -0700
From: Kees Cook <keescook@...omium.org>
To: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>, Ingo Molnar <mingo@...nel.org>,
Joe Perches <joe@...ches.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Thomas Gleixner <tglx@...utronix.de>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ia64: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.
One less trivial change was removing the repeated casting for callers
of bte_error_handler() by fixing its function declaration and adding a
small wrapper for the timer callback instead.
Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Joe Perches <joe@...ches.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-ia64@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
arch/ia64/include/asm/sn/bte.h | 4 +++-
arch/ia64/kernel/mca.c | 8 ++++----
arch/ia64/kernel/salinfo.c | 5 ++---
arch/ia64/sn/kernel/bte.c | 12 ++++++++----
arch/ia64/sn/kernel/bte_error.c | 17 ++++++-----------
arch/ia64/sn/kernel/huberror.c | 2 +-
arch/ia64/sn/kernel/mca.c | 5 ++---
7 files changed, 26 insertions(+), 27 deletions(-)
diff --git a/arch/ia64/include/asm/sn/bte.h b/arch/ia64/include/asm/sn/bte.h
index cc6c4dbf53af..cd71ab5faf62 100644
--- a/arch/ia64/include/asm/sn/bte.h
+++ b/arch/ia64/include/asm/sn/bte.h
@@ -17,6 +17,8 @@
#include <asm/sn/types.h>
#include <asm/sn/shub_mmr.h>
+struct nodepda_s;
+
#define IBCT_NOTIFY (0x1UL << 4)
#define IBCT_ZFIL_MODE (0x1UL << 0)
@@ -210,7 +212,7 @@ struct bteinfo_s {
*/
extern bte_result_t bte_copy(u64, u64, u64, u64, void *);
extern bte_result_t bte_unaligned_copy(u64, u64, u64, u64);
-extern void bte_error_handler(unsigned long);
+extern void bte_error_handler(struct nodepda_s *);
#define bte_zero(dest, len, mode, notification) \
bte_copy(0, dest, len, ((mode) | BTE_ZERO_FILL), notification)
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 555b11180156..6115464d5f03 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1513,7 +1513,7 @@ ia64_mca_cmc_int_caller(int cmc_irq, void *arg)
*
*/
static void
-ia64_mca_cmc_poll (unsigned long dummy)
+ia64_mca_cmc_poll (struct timer_list *unused)
{
/* Trigger a CMC interrupt cascade */
platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CMCP_VECTOR,
@@ -1590,7 +1590,7 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
*
*/
static void
-ia64_mca_cpe_poll (unsigned long dummy)
+ia64_mca_cpe_poll (struct timer_list *unused)
{
/* Trigger a CPE interrupt cascade */
platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CPEP_VECTOR,
@@ -2098,7 +2098,7 @@ ia64_mca_late_init(void)
return 0;
/* Setup the CMCI/P vector and handler */
- setup_timer(&cmc_poll_timer, ia64_mca_cmc_poll, 0UL);
+ timer_setup(&cmc_poll_timer, ia64_mca_cmc_poll, 0);
/* Unmask/enable the vector */
cmc_polling_enabled = 0;
@@ -2109,7 +2109,7 @@ ia64_mca_late_init(void)
#ifdef CONFIG_ACPI
/* Setup the CPEI/P vector and handler */
cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
- setup_timer(&cpe_poll_timer, ia64_mca_cpe_poll, 0UL);
+ timer_setup(&cpe_poll_timer, ia64_mca_cpe_poll, 0);
{
unsigned int irq;
diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index 63dc9cdc95c5..52c404b08904 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -263,7 +263,7 @@ salinfo_timeout_check(struct salinfo_data *data)
}
static void
-salinfo_timeout (unsigned long arg)
+salinfo_timeout(struct timer_list *unused)
{
ia64_mlogbuf_dump();
salinfo_timeout_check(salinfo_data + SAL_INFO_TYPE_MCA);
@@ -623,9 +623,8 @@ salinfo_init(void)
*sdir++ = salinfo_dir;
- init_timer(&salinfo_timer);
+ timer_setup(&salinfo_timer, salinfo_timeout, 0);
salinfo_timer.expires = jiffies + SALINFO_TIMER_DELAY;
- salinfo_timer.function = &salinfo_timeout;
add_timer(&salinfo_timer);
i = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "ia64/salinfo:online",
diff --git a/arch/ia64/sn/kernel/bte.c b/arch/ia64/sn/kernel/bte.c
index b2eb48490754..9146192b86f5 100644
--- a/arch/ia64/sn/kernel/bte.c
+++ b/arch/ia64/sn/kernel/bte.c
@@ -219,7 +219,7 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
BTE_LNSTAT_LOAD(bte), *bte->most_rcnt_na) );
bte->bte_error_count++;
bte->bh_error = IBLS_ERROR;
- bte_error_handler((unsigned long)NODEPDA(bte->bte_cnode));
+ bte_error_handler(NODEPDA(bte->bte_cnode));
*bte->most_rcnt_na = BTE_WORD_AVAILABLE;
goto retry_bteop;
}
@@ -414,6 +414,12 @@ EXPORT_SYMBOL(bte_unaligned_copy);
* Block Transfer Engine initialization functions.
*
***********************************************************************/
+static void bte_recovery_timeout(struct timer_list *t)
+{
+ struct nodepda_s *nodepda = from_timer(nodepda, t, bte_recovery_timer);
+
+ bte_error_handler(nodepda);
+}
/*
* bte_init_node(nodepda, cnode)
@@ -436,9 +442,7 @@ void bte_init_node(nodepda_t * mynodepda, cnodeid_t cnode)
* will point at this one bte_recover structure to get the lock.
*/
spin_lock_init(&mynodepda->bte_recovery_lock);
- init_timer(&mynodepda->bte_recovery_timer);
- mynodepda->bte_recovery_timer.function = bte_error_handler;
- mynodepda->bte_recovery_timer.data = (unsigned long)mynodepda;
+ timer_setup(&mynodepda->bte_recovery_timer, bte_recovery_timeout, 0);
for (i = 0; i < BTES_PER_NODE; i++) {
u64 *base_addr;
diff --git a/arch/ia64/sn/kernel/bte_error.c b/arch/ia64/sn/kernel/bte_error.c
index 4cb09f3f1efc..d92786c09b34 100644
--- a/arch/ia64/sn/kernel/bte_error.c
+++ b/arch/ia64/sn/kernel/bte_error.c
@@ -27,15 +27,12 @@
* transfers to be queued.
*/
-void bte_error_handler(unsigned long);
-
/*
* Wait until all BTE related CRBs are completed
* and then reset the interfaces.
*/
-int shub1_bte_error_handler(unsigned long _nodepda)
+static int shub1_bte_error_handler(struct nodepda_s *err_nodepda)
{
- struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
nasid_t nasid;
int i;
@@ -131,9 +128,8 @@ int shub1_bte_error_handler(unsigned long _nodepda)
* Wait until all BTE related CRBs are completed
* and then reset the interfaces.
*/
-int shub2_bte_error_handler(unsigned long _nodepda)
+static int shub2_bte_error_handler(struct nodepda_s *err_nodepda)
{
- struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
struct bteinfo_s *bte;
nasid_t nasid;
@@ -170,9 +166,8 @@ int shub2_bte_error_handler(unsigned long _nodepda)
* Wait until all BTE related CRBs are completed
* and then reset the interfaces.
*/
-void bte_error_handler(unsigned long _nodepda)
+void bte_error_handler(struct nodepda_s *err_nodepda)
{
- struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
int i;
unsigned long irq_flags;
@@ -199,12 +194,12 @@ void bte_error_handler(unsigned long _nodepda)
}
if (is_shub1()) {
- if (shub1_bte_error_handler(_nodepda)) {
+ if (shub1_bte_error_handler(err_nodepda)) {
spin_unlock_irqrestore(recovery_lock, irq_flags);
return;
}
} else {
- if (shub2_bte_error_handler(_nodepda)) {
+ if (shub2_bte_error_handler(err_nodepda)) {
spin_unlock_irqrestore(recovery_lock, irq_flags);
return;
}
@@ -255,6 +250,6 @@ bte_crb_error_handler(cnodeid_t cnode, int btenum,
BTE_PRINTK(("Got an error on cnode %d bte %d: HW error type 0x%x\n",
bte->bte_cnode, bte->bte_num, ioe->ie_errortype));
- bte_error_handler((unsigned long) NODEPDA(cnode));
+ bte_error_handler(NODEPDA(cnode));
}
diff --git a/arch/ia64/sn/kernel/huberror.c b/arch/ia64/sn/kernel/huberror.c
index f925dec2da92..97fa56dddf50 100644
--- a/arch/ia64/sn/kernel/huberror.c
+++ b/arch/ia64/sn/kernel/huberror.c
@@ -50,7 +50,7 @@ static irqreturn_t hub_eint_handler(int irq, void *arg)
if ((int)ret_stuff.v0)
panic("%s: Fatal TIO Error", __func__);
} else
- bte_error_handler((unsigned long)NODEPDA(nasid_to_cnodeid(nasid)));
+ bte_error_handler(NODEPDA(nasid_to_cnodeid(nasid)));
return IRQ_HANDLED;
}
diff --git a/arch/ia64/sn/kernel/mca.c b/arch/ia64/sn/kernel/mca.c
index 5b799d4deb74..bc3bd930c74c 100644
--- a/arch/ia64/sn/kernel/mca.c
+++ b/arch/ia64/sn/kernel/mca.c
@@ -72,7 +72,7 @@ static void sn_cpei_handler(int irq, void *devid, struct pt_regs *regs)
ia64_sn_plat_cpei_handler();
}
-static void sn_cpei_timer_handler(unsigned long dummy)
+static void sn_cpei_timer_handler(struct timer_list *unused)
{
sn_cpei_handler(-1, NULL, NULL);
mod_timer(&sn_cpei_timer, jiffies + CPEI_INTERVAL);
@@ -80,9 +80,8 @@ static void sn_cpei_timer_handler(unsigned long dummy)
void sn_init_cpei_timer(void)
{
- init_timer(&sn_cpei_timer);
+ timer_setup(&sn_cpei_timer, sn_cpei_timer_handler, 0);
sn_cpei_timer.expires = jiffies + CPEI_INTERVAL;
- sn_cpei_timer.function = sn_cpei_timer_handler;
add_timer(&sn_cpei_timer);
}
--
2.7.4
--
Kees Cook
Pixel Security
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