From 408fde81c1bff15c875a3618481e93a01dcc79ea Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Thu, 23 Jun 2005 00:07:37 -0700 Subject: [PATCH] remove non-DISCONTIG use of pgdat->node_mem_map This patch effectively eliminates direct use of pgdat->node_mem_map outside of the DISCONTIG code. On a flat memory system, these fields aren't currently used, neither are they on a sparsemem system. There was also a node_mem_map(nid) macro on many architectures. Its use along with the use of ->node_mem_map itself was not consistent. It has been removed in favor of two new, more explicit, arch-independent macros: pgdat_page_nr(pgdat, pagenr) nid_page_nr(nid, pagenr) I called them "pgdat" and "nid" because we overload the term "node" to mean "NUMA node", "DISCONTIG node" or "pg_data_t" in very confusing ways. I believe the newer names are much clearer. These macros can be overridden in the sparsemem case with a theoretically slower operation using node_start_pfn and pfn_to_page(), instead. We could make this the only behavior if people want, but I don't want to change too much at once. One thing at a time. This patch removes more code than it adds. Compile tested on alpha, alpha discontig, arm, arm-discontig, i386, i386 generic, NUMAQ, Summit, ppc64, ppc64 discontig, and x86_64. Full list here: http://sr71.net/patches/2.6.12/2.6.12-rc1-mhp2/configs/ Boot tested on NUMAQ, x86 SMP and ppc64 power4/5 LPARs. Signed-off-by: Dave Hansen Signed-off-by: Martin J. Bligh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-parisc/mmzone.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/mmzone.h b/include/asm-parisc/mmzone.h index 928bf50c4693..595d3dce120a 100644 --- a/include/asm-parisc/mmzone.h +++ b/include/asm-parisc/mmzone.h @@ -19,7 +19,6 @@ extern struct node_map_data node_data[]; */ #define kvaddr_to_nid(kaddr) pfn_to_nid(__pa(kaddr) >> PAGE_SHIFT) -#define node_mem_map(nid) (NODE_DATA(nid)->node_mem_map) #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) #define node_end_pfn(nid) \ ({ \ @@ -38,7 +37,7 @@ extern struct node_map_data node_data[]; ({ \ unsigned long __pfn = (pfn); \ int __node = pfn_to_nid(__pfn); \ - &node_mem_map(__node)[node_localnr(__pfn,__node)]; \ + &NODE_DATA(__node)->node_mem_map[node_localnr(__pfn,__node)]; \ }) #define page_to_pfn(pg) \ -- cgit v1.2.3 From dcd497f99a1ef29a7c5e76142965be77e9dacabd Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Thu, 23 Jun 2005 00:09:07 -0700 Subject: [PATCH] streamline preempt_count type across archs The preempt_count member of struct thread_info is currently either defined as int, unsigned int or __s32 depending on arch. This patch makes the type of preempt_count an int on all archs. Having preempt_count be an unsigned type prevents the catching of preempt_count < 0 bugs, and using int on some archs and __s32 on others is not exactely "neat" - much nicer when it's just int all over. A previous version of this patch was already ACK'ed by Robert Love, and the only change in this version of the patch compared to the one he ACK'ed is that this one also makes sure the preempt_count member is consistently commented. Signed-off-by: Jesper Juhl Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-parisc/thread_info.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/thread_info.h b/include/asm-parisc/thread_info.h index fe9b7f8ae4c6..57bbb76cb6c1 100644 --- a/include/asm-parisc/thread_info.h +++ b/include/asm-parisc/thread_info.h @@ -12,7 +12,7 @@ struct thread_info { unsigned long flags; /* thread_info flags (see TIF_*) */ mm_segment_t addr_limit; /* user-level address space limit */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ + int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ struct restart_block restart_block; }; -- cgit v1.2.3 From 0d77e5a2c23da734f5a7925f64afa1c2ed92e0f9 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 23 Jun 2005 00:10:14 -0700 Subject: [PATCH] compat: introduce compat_time_t This patch is based on work by Carlos O'Donell and Matthew Wilcox. It introduces/updates the compat_time_t type and uses it for compat siginfo structures. I have built this on ppc64 and x86_64. Signed-off-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-parisc/compat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/compat.h b/include/asm-parisc/compat.h index ca0eac647a05..7630d1ad2391 100644 --- a/include/asm-parisc/compat.h +++ b/include/asm-parisc/compat.h @@ -24,7 +24,7 @@ typedef u16 compat_nlink_t; typedef u16 compat_ipc_pid_t; typedef s32 compat_daddr_t; typedef u32 compat_caddr_t; -typedef u32 compat_timer_t; +typedef s32 compat_timer_t; typedef s32 compat_int_t; typedef s32 compat_long_t; -- cgit v1.2.3 From e24c2d963a604d9eaa560c90371fa387d3eec8f1 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 2 Jun 2005 12:55:50 -0700 Subject: [PATCH] PCI: DMA bursting advice After seeing, at best, "guesses" as to the following kind of information in several drivers, I decided that we really need a way for platforms to specifically give advice in this area for what works best with their PCI controller implementation. Basically, this new interface gives DMA bursting advice on PCI. There are three forms of the advice: 1) Burst as much as possible, it is not necessary to end bursts on some particular boundary for best performance. 2) Burst on some byte count multiple. A DMA burst to some multiple of number of bytes may be done, but it is important to end the burst on an exact multiple for best performance. The best example of this I am aware of are the PPC64 PCI controllers, where if you end a burst mid-cacheline then chip has to refetch the data and the IOMMU translations which hurts performance a lot. 3) Burst on a single byte count multiple. Bursts shall end exactly on the next multiple boundary for best performance. Sparc64 and Alpha's PCI controllers operate this way. They disconnect any device which tries to burst across a cacheline boundary. Actually, newer sparc64 PCI controllers do not have this behavior. That is why the "pdev" is passed into the interface, so I can add code later to check which PCI controller the system is using and give advice accordingly. Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- include/asm-parisc/pci.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/pci.h b/include/asm-parisc/pci.h index 0763c2982fb0..f9f5bf90111d 100644 --- a/include/asm-parisc/pci.h +++ b/include/asm-parisc/pci.h @@ -230,6 +230,23 @@ extern inline void pcibios_register_hba(struct pci_hba_data *x) /* export the pci_ DMA API in terms of the dma_ one */ #include +static inline void pci_dma_burst_advice(struct pci_dev *pdev, + enum pci_dma_burst_strategy *strat, + unsigned long *strategy_parameter) +{ + unsigned long cacheline_size; + u8 byte; + + pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); + if (byte == 0) + cacheline_size = 1024; + else + cacheline_size = (int) byte * 4; + + *strat = PCI_DMA_BURST_MULTIPLE; + *strategy_parameter = cacheline_size; +} + extern void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res); -- cgit v1.2.3 From bb4a61b6eaee01707f24deeefc5d7136f25f75c5 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 6 Jun 2005 23:07:46 -0700 Subject: [PATCH] PCI: fix up errors after dma bursting patch and CONFIG_PCI=n With CONFIG_PCI=n: In file included from include/linux/pci.h:917, from lib/iomap.c:6: include/asm/pci.h:104: warning: `enum pci_dma_burst_strategy' declared inside parameter list include/asm/pci.h:104: warning: its scope is only this definition or declaration, which is probably not what you want. include/asm/pci.h: In function `pci_dma_burst_advice': include/asm/pci.h:106: dereferencing pointer to incomplete type include/asm/pci.h:106: `PCI_DMA_BURST_INFINITY' undeclared (first use in this function) include/asm/pci.h:106: (Each undeclared identifier is reported only once include/asm/pci.h:106: for each function it appears in.) make[1]: *** [lib/iomap.o] Error 1 Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/asm-parisc/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/pci.h b/include/asm-parisc/pci.h index f9f5bf90111d..ee741c150176 100644 --- a/include/asm-parisc/pci.h +++ b/include/asm-parisc/pci.h @@ -230,6 +230,7 @@ extern inline void pcibios_register_hba(struct pci_hba_data *x) /* export the pci_ DMA API in terms of the dma_ one */ #include +#ifdef CONFIG_PCI static inline void pci_dma_burst_advice(struct pci_dev *pdev, enum pci_dma_burst_strategy *strat, unsigned long *strategy_parameter) @@ -246,6 +247,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev, *strat = PCI_DMA_BURST_MULTIPLE; *strategy_parameter = cacheline_size; } +#endif extern void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, -- cgit v1.2.3 From 026d02a236f429eb61a1277166bd425f8514c431 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 18:45:19 +0100 Subject: [PATCH] Serial: Split 8250 port table (part 2) Remove legacy ISA serial ports for Accent, Boca, Fourport, Hub6 and MCA from the architecture specific serial.h include. The only ports which remain in asm-*/serial.h are the platform specific entries. These should really be converted by platform maintainers to use a platform device, such as can be found in arch/arm/mach-footbridge/isa.c Signed-off-by: Russell King --- include/asm-parisc/serial.h | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/serial.h b/include/asm-parisc/serial.h index 239c5dcab7e6..82fd820d684f 100644 --- a/include/asm-parisc/serial.h +++ b/include/asm-parisc/serial.h @@ -19,18 +19,4 @@ * A500 w/ PCI serial cards: 5 + 4 * card ~= 17 */ -#define STD_SERIAL_PORT_DEFNS \ - { 0, }, /* ttyS0 */ \ - { 0, }, /* ttyS1 */ \ - { 0, }, /* ttyS2 */ \ - { 0, }, /* ttyS3 */ \ - { 0, }, /* ttyS4 */ \ - { 0, }, /* ttyS5 */ \ - { 0, }, /* ttyS6 */ \ - { 0, }, /* ttyS7 */ \ - { 0, }, /* ttyS8 */ - - -#define SERIAL_PORT_DFNS \ - STD_SERIAL_PORT_DEFNS - +#define SERIAL_PORT_DFNS -- cgit v1.2.3 From 7c9034735eccbf82608a4602c59aaf6053ea9416 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 26 Jul 2005 11:29:55 -0600 Subject: [PATCH] Add emergency_restart() When the kernel is working well and we want to restart cleanly kernel_restart is the function to use. But in many instances the kernel wants to reboot when thing are expected to be working very badly such as from panic or a software watchdog handler. This patch adds the function emergency_restart() so that callers can be clear what semantics they expect when calling restart. emergency_restart() is expected to be callable from interrupt context and possibly reliable in even more trying circumstances. This is an initial generic implementation for all architectures. Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds --- include/asm-parisc/emergency-restart.h | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 include/asm-parisc/emergency-restart.h (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/emergency-restart.h b/include/asm-parisc/emergency-restart.h new file mode 100644 index 000000000000..108d8c48e42e --- /dev/null +++ b/include/asm-parisc/emergency-restart.h @@ -0,0 +1,6 @@ +#ifndef _ASM_EMERGENCY_RESTART_H +#define _ASM_EMERGENCY_RESTART_H + +#include + +#endif /* _ASM_EMERGENCY_RESTART_H */ -- cgit v1.2.3 From 43c34735524d5b1c9b9e5d63b49dd4c1b394bde4 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 4 Aug 2005 18:06:21 -0700 Subject: [PATCH] pci and yenta: pcibios_bus_to_resource In yenta_socket, we default to using the resource setting of the CardBus bridge. However, this is a PCI-bus-centric view of resources and thus needs to be converted to generic resources first. Therefore, add a call to pcibios_bus_to_resource() call in between. This function is a mere wrapper on x86 and friends, however on some others it already exists, is added in this patch (alpha, arm, ppc, ppc64) or still needs to be provided (parisc -- where is its pcibios_resource_to_bus() ?). Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman Signed-off-by: Linus Torvalds --- include/asm-parisc/pci.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/asm-parisc') diff --git a/include/asm-parisc/pci.h b/include/asm-parisc/pci.h index ee741c150176..98d79a3d54fa 100644 --- a/include/asm-parisc/pci.h +++ b/include/asm-parisc/pci.h @@ -253,6 +253,10 @@ extern void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res); +extern void +pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, + struct pci_bus_region *region); + static inline void pcibios_add_platform_entries(struct pci_dev *dev) { } -- cgit v1.2.3