From 66d51f3e81b1067bdc836b3aba609eec957c693c Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Mon, 22 Jun 2009 12:08:08 +0200 Subject: [S390] s390: remove DEBUG_MALLOC The kernel now has kmemleak and kmemtrace so there's no reason to keep this ugly s390 hack around. I am not sure how it's supposed to work on SMP anyway as it uses a global variable to temporarily store the return value of all kmalloc() calls: void *b; #define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b) Cc: Cc: Heiko Carstens Signed-off-by: Pekka Enberg Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/debug.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h index 9450ce6e32de..31ed5686a968 100644 --- a/arch/s390/include/asm/debug.h +++ b/arch/s390/include/asm/debug.h @@ -248,14 +248,5 @@ int debug_unregister_view(debug_info_t* id, struct debug_view* view); #define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #endif /* DASD_DEBUG */ -#undef DEBUG_MALLOC -#ifdef DEBUG_MALLOC -void *b; -#define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b) -#define kfree(x) PRINT_INFO(" kfree %p\n",x);kfree(x) -#define get_zeroed_page(x...) (PRINT_INFO(" gfp %p\n",b=get_zeroed_page(x)),b) -#define __get_free_pages(x...) (PRINT_INFO(" gfps %p\n",b=__get_free_pages(x)),b) -#endif /* DEBUG_MALLOC */ - #endif /* __KERNEL__ */ #endif /* DEBUG_H */ -- cgit v1.2.3 From 6618241b47cd131503610d8df68dd6f4948e5c1a Mon Sep 17 00:00:00 2001 From: Jan Glauber Date: Mon, 22 Jun 2009 12:08:15 +0200 Subject: [S390] qdio: Sanitize do_QDIO sanity checks Remove unneeded sanity checks from do_QDIO since this is the hot path. Change the type of bufnr and count to unsigned int so the check for the maximum value works. Reported-by: Roel Kluin Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/qdio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index 402d6dcf0d26..79d849f014f0 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -380,7 +380,7 @@ extern int qdio_establish(struct qdio_initialize *); extern int qdio_activate(struct ccw_device *); extern int do_QDIO(struct ccw_device *cdev, unsigned int callflags, - int q_nr, int bufnr, int count); + int q_nr, unsigned int bufnr, unsigned int count); extern int qdio_cleanup(struct ccw_device*, int); extern int qdio_shutdown(struct ccw_device*, int); extern int qdio_free(struct ccw_device *); -- cgit v1.2.3 From e98bbaafcd1c47d30f3245517fb585f1aaaca4db Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 22 Jun 2009 12:08:20 +0200 Subject: [S390] lockless idle time accounting Replace the spinlock used in the idle time accounting with a sequence counter mechanism analog to seqlock. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/cputime.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index ec917d42ee6d..7a3817a656df 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -178,7 +178,7 @@ cputime64_to_clock_t(cputime64_t cputime) } struct s390_idle_data { - spinlock_t lock; + unsigned int sequence; unsigned long long idle_count; unsigned long long idle_enter; unsigned long long idle_time; -- cgit v1.2.3 From 12310e9c1b9a53896e4df0459039dd125f62aa9b Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 22 Jun 2009 12:08:22 +0200 Subject: [S390] Enable tick based perf_counter on s390. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/perf_counter.h | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 arch/s390/include/asm/perf_counter.h (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/perf_counter.h b/arch/s390/include/asm/perf_counter.h new file mode 100644 index 000000000000..a7205a3828cb --- /dev/null +++ b/arch/s390/include/asm/perf_counter.h @@ -0,0 +1,8 @@ +/* + * Performance counter support - s390 specific definitions. + * + * Copyright 2009 Martin Schwidefsky, IBM Corporation. + */ + +static inline void set_perf_counter_pending(void) {} +static inline void clear_perf_counter_pending(void) {} -- cgit v1.2.3 From ef50f7ac7e234f9696555e41eab3de69c3d86166 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Tue, 23 Jun 2009 17:24:07 +0200 Subject: KVM: s390: Allow stfle instruction in the guest 2.6.31-rc introduced an architecture level set checker based on facility bits. e.g. if the kernel is compiled to run only on z9, several facility bits are checked very early and the kernel refuses to boot if a z9 specific facility is missing. Until now kvm on s390 did not implement the store facility extended (STFLE) instruction. A 2.6.31-rc kernel that was compiled for z9 or higher did not boot in kvm. This patch implements stfle. This patch should go in before 2.6.31. Signed-off-by: Christian Borntraeger Signed-off-by: Avi Kivity --- arch/s390/include/asm/kvm_host.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index a27d0d5a6f86..1cd02f6073a0 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -99,7 +99,9 @@ struct kvm_s390_sie_block { __u8 reservedd0[48]; /* 0x00d0 */ __u64 gcr[16]; /* 0x0100 */ __u64 gbea; /* 0x0180 */ - __u8 reserved188[120]; /* 0x0188 */ + __u8 reserved188[24]; /* 0x0188 */ + __u32 fac; /* 0x01a0 */ + __u8 reserved1a4[92]; /* 0x01a4 */ } __attribute__((packed)); struct kvm_vcpu_stat { -- cgit v1.2.3