From a987884295891f18fddf9c76d7d47c9486701560 Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Fri, 11 Mar 2016 11:52:37 +0100 Subject: s390/cpum_cf: Fix missing cpu hotplug notifier transition The cpumf_pmu_notfier() hotplug callback lacks handling of the CPU_DOWN_FAILED case. That means, if CPU_DOWN_PREPARE failes, the PMC of the CPU is not setup again. Add handling for CPU_DOWN_FAILED transition to setup the PMC of the CPU. Signed-off-by: Anna-Maria Gleixner Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/perf_cpum_cf.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/s390/kernel') diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c index 58bf4572d457..62f066b5259e 100644 --- a/arch/s390/kernel/perf_cpum_cf.c +++ b/arch/s390/kernel/perf_cpum_cf.c @@ -670,6 +670,7 @@ static int cpumf_pmu_notifier(struct notifier_block *self, unsigned long action, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: + case CPU_DOWN_FAILED: flags = PMC_INIT; smp_call_function_single(cpu, setup_pmc_cpu, &flags, 1); break; -- cgit v1.2.3 From 1e3c1dd15dd30232458e35128fd062b788b1c9e4 Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Fri, 11 Mar 2016 11:52:38 +0100 Subject: s390/cpum_sf: Fix cpu hotplug notifier transitions The cpumf_pmu_notfier() hotplug callback lacks handling of the CPU_DOWN_FAILED case. That means, if CPU_DOWN_PREPARE failes, the PMC of the CPU is not setup again. Furthermore the CPU_ONLINE_FROZEN case will never be processed because of masking the switch expression with CPU_TASKS_FROZEN. Add handling for CPU_DOWN_FAILED transition to setup the PMC of the CPU. Remove CPU_ONLINE_FROZEN case. Signed-off-by: Anna-Maria Gleixner Acked-by: Hendrik Brueckner Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/perf_cpum_sf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390/kernel') diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 1a43474df541..eaab9a7cb3be 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -1521,7 +1521,7 @@ static int cpumf_pmu_notifier(struct notifier_block *self, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: - case CPU_ONLINE_FROZEN: + case CPU_DOWN_FAILED: flags = PMC_INIT; smp_call_function_single(cpu, setup_pmc_cpu, &flags, 1); break; -- cgit v1.2.3 From 3358999a8e7ae82912e5908adb7150a6558d6702 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 21 Mar 2016 13:48:43 +0100 Subject: s390: wire up preadv2/pwritev2 syscalls Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/uapi/asm/unistd.h | 4 +++- arch/s390/kernel/syscalls.S | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/s390/kernel') diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h index ab3aa6875a59..4384bc797a54 100644 --- a/arch/s390/include/uapi/asm/unistd.h +++ b/arch/s390/include/uapi/asm/unistd.h @@ -311,7 +311,9 @@ #define __NR_shutdown 373 #define __NR_mlock2 374 #define __NR_copy_file_range 375 -#define NR_syscalls 376 +#define __NR_preadv2 376 +#define __NR_pwritev2 377 +#define NR_syscalls 378 /* * There are some system calls that are not present on 64 bit, some diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 293d8b98fd52..9b59e6212d8f 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -384,3 +384,5 @@ SYSCALL(sys_recvmsg,compat_sys_recvmsg) SYSCALL(sys_shutdown,sys_shutdown) SYSCALL(sys_mlock2,compat_sys_mlock2) SYSCALL(sys_copy_file_range,compat_sys_copy_file_range) /* 375 */ +SYSCALL(sys_preadv2,compat_sys_preadv2) +SYSCALL(sys_pwritev2,compat_sys_pwritev2) -- cgit v1.2.3