Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756532AbZJ3KEr (ORCPT ); Fri, 30 Oct 2009 06:04:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755037AbZJ3KEq (ORCPT ); Fri, 30 Oct 2009 06:04:46 -0400 Received: from mtagate5.de.ibm.com ([195.212.17.165]:34516 "EHLO mtagate5.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754153AbZJ3KEo (ORCPT ); Fri, 30 Oct 2009 06:04:44 -0400 Date: Fri, 30 Oct 2009 11:04:50 +0100 From: Martin Schwidefsky To: Linus Torvalds Cc: linux-kernel , linux-s390 , Heiko Carstens Subject: [GIT PULL] s390 patches for 2.6.32-rc5 Message-ID: <20091030110450.608a6671@mschwide.boeblingen.de.ibm.com> Organization: IBM Corporation X-Mailer: Claws Mail 3.7.3 (GTK+ 2.18.3; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7826 Lines: 250 Hi Linus, the latest bug fixes for s390, please pull from 'for-linus' branch of git://git390.marist.edu/pub/scm/linux-2.6.git for-linus to receive the following updates: Heiko Carstens (5): [S390] smp: fix prefix handling of offlined cpus [S390] call home: fix error handling in init function [S390] call home: fix string length handling [S390] smp: fix sigp stop handling [S390] smp: fix sigp sense handling Martin Schwidefsky (2): [S390] s/r: cmm resume fix [S390] cputime: fix overflow on 31 bit systems Sebastian Ott (1): [S390] call home: fix local buffer usage in proc handler arch/s390/include/asm/cputime.h | 6 ++-- arch/s390/kernel/ipl.c | 7 ++--- arch/s390/kernel/smp.c | 7 +++-- arch/s390/kernel/swsusp_asm64.S | 2 + drivers/s390/char/sclp_async.c | 47 +++++++++++++++------------------------ drivers/s390/net/smsgiucv.c | 7 +++++- 6 files changed, 36 insertions(+), 40 deletions(-) diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index 24b1244..f23961a 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -78,7 +78,7 @@ cputime64_to_jiffies64(cputime64_t cputime) static inline unsigned int cputime_to_msecs(const cputime_t cputime) { - return __div(cputime, 4096000); + return cputime_div(cputime, 4096000); } static inline cputime_t @@ -160,7 +160,7 @@ cputime_to_timeval(const cputime_t cputime, struct timeval *value) static inline clock_t cputime_to_clock_t(cputime_t cputime) { - return __div(cputime, 4096000000ULL / USER_HZ); + return cputime_div(cputime, 4096000000ULL / USER_HZ); } static inline cputime_t @@ -175,7 +175,7 @@ clock_t_to_cputime(unsigned long x) static inline clock_t cputime64_to_clock_t(cputime64_t cputime) { - return __div(cputime, 4096000000ULL / USER_HZ); + return cputime_div(cputime, 4096000000ULL / USER_HZ); } struct s390_idle_data { diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index ee57a42..4890ac6 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -1595,10 +1595,9 @@ static void stop_run(struct shutdown_trigger *trigger) { if (strcmp(trigger->name, ON_PANIC_STR) == 0) disabled_wait((unsigned long) __builtin_return_address(0)); - else { - signal_processor(smp_processor_id(), sigp_stop); - for (;;); - } + while (signal_processor(smp_processor_id(), sigp_stop) == sigp_busy) + cpu_relax(); + for (;;); } static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index c932caa..93e5203 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -76,7 +76,6 @@ static int cpu_stopped(int cpu) __u32 status; switch (signal_processor_ps(&status, 0, cpu, sigp_sense)) { - case sigp_order_code_accepted: case sigp_status_stored: /* Check for stopped and check stop state */ if (status & 0x50) @@ -638,6 +637,8 @@ void __cpu_die(unsigned int cpu) /* Wait until target cpu is down */ while (!cpu_stopped(cpu)) cpu_relax(); + while (signal_processor_p(0, cpu, sigp_set_prefix) == sigp_busy) + udelay(10); smp_free_lowcore(cpu); pr_info("Processor %d stopped\n", cpu); } @@ -645,8 +646,8 @@ void __cpu_die(unsigned int cpu) void cpu_die(void) { idle_task_exit(); - signal_processor(smp_processor_id(), sigp_stop); - BUG(); + while (signal_processor(smp_processor_id(), sigp_stop) == sigp_busy) + cpu_relax(); for (;;); } diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S index 7c8653e..0c26cc1 100644 --- a/arch/s390/kernel/swsusp_asm64.S +++ b/arch/s390/kernel/swsusp_asm64.S @@ -199,6 +199,7 @@ pgm_check_entry: brc 2,4b /* busy, try again */ 5: sigp %r9,%r2,__SIGP_STOP /* stop resume (current) CPU */ + brc 2,5b /* busy, try again */ 6: j 6b restart_suspend: @@ -206,6 +207,7 @@ restart_suspend: llgh %r2,0(%r1) 7: sigp %r9,%r2,__SIGP_SENSE /* Wait for resume CPU */ + brc 8,7b /* accepted, status 0, still running */ brc 2,7b /* busy, try again */ tmll %r9,0x40 /* Test if resume CPU is stopped */ jz 7b diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c index a4f68e5..b44462a 100644 --- a/drivers/s390/char/sclp_async.c +++ b/drivers/s390/char/sclp_async.c @@ -26,7 +26,6 @@ static struct sclp_async_sccb *sccb; static int sclp_async_send_wait(char *message); static struct ctl_table_header *callhome_sysctl_header; static DEFINE_SPINLOCK(sclp_async_lock); -static char nodename[64]; #define SCLP_NORMAL_WRITE 0x00 struct async_evbuf { @@ -52,9 +51,10 @@ static struct sclp_register sclp_async_register = { static int call_home_on_panic(struct notifier_block *self, unsigned long event, void *data) { - strncat(data, nodename, strlen(nodename)); - sclp_async_send_wait(data); - return NOTIFY_DONE; + strncat(data, init_utsname()->nodename, + sizeof(init_utsname()->nodename)); + sclp_async_send_wait(data); + return NOTIFY_DONE; } static struct notifier_block call_home_panic_nb = { @@ -68,15 +68,14 @@ static int proc_handler_callhome(struct ctl_table *ctl, int write, { unsigned long val; int len, rc; - char buf[2]; + char buf[3]; - if (!*count | (*ppos && !write)) { + if (!*count || (*ppos && !write)) { *count = 0; return 0; } if (!write) { - len = sprintf(buf, "%d\n", callhome_enabled); - buf[len] = '\0'; + len = snprintf(buf, sizeof(buf), "%d\n", callhome_enabled); rc = copy_to_user(buffer, buf, sizeof(buf)); if (rc != 0) return -EFAULT; @@ -171,39 +170,29 @@ static int __init sclp_async_init(void) rc = sclp_register(&sclp_async_register); if (rc) return rc; - callhome_sysctl_header = register_sysctl_table(kern_dir_table); - if (!callhome_sysctl_header) { - rc = -ENOMEM; - goto out_sclp; - } - if (!(sclp_async_register.sclp_receive_mask & EVTYP_ASYNC_MASK)) { - rc = -EOPNOTSUPP; + rc = -EOPNOTSUPP; + if (!(sclp_async_register.sclp_receive_mask & EVTYP_ASYNC_MASK)) goto out_sclp; - } rc = -ENOMEM; + callhome_sysctl_header = register_sysctl_table(kern_dir_table); + if (!callhome_sysctl_header) + goto out_sclp; request = kzalloc(sizeof(struct sclp_req), GFP_KERNEL); - if (!request) - goto out_sys; sccb = (struct sclp_async_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); - if (!sccb) + if (!request || !sccb) goto out_mem; - rc = atomic_notifier_chain_register(&panic_notifier_list, - &call_home_panic_nb); - if (rc) - goto out_mem; - - strncpy(nodename, init_utsname()->nodename, 64); - return 0; - + rc = atomic_notifier_chain_register(&panic_notifier_list, + &call_home_panic_nb); + if (!rc) + goto out; out_mem: kfree(request); free_page((unsigned long) sccb); -out_sys: unregister_sysctl_table(callhome_sysctl_header); out_sclp: sclp_unregister(&sclp_async_register); +out: return rc; - } module_init(sclp_async_init); diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c index 102000d..3012355 100644 --- a/drivers/s390/net/smsgiucv.c +++ b/drivers/s390/net/smsgiucv.c @@ -158,7 +158,12 @@ static int smsg_pm_restore_thaw(struct device *dev) smsg_path->flags = 0; rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG ", NULL, NULL, NULL); - printk(KERN_ERR "iucv_path_connect returned with rc %i\n", rc); +#ifdef CONFIG_PM_DEBUG + if (rc) + printk(KERN_ERR + "iucv_path_connect returned with rc %i\n", rc); +#endif + cpcmd("SET SMSG IUCV", NULL, 0, NULL); } return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/