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* net: Make setsockopt() optlen be unsigned.David S. Miller2009-09-301-1/+1
| | | | | | | | | | | | This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/atm: Use DIV_ROUND_CLOSESTJulia Lawall2009-08-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d but is perhaps more readable. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ #include <linux/kernel.h> @depends on haskernel@ expression x,__divisor; @@ - (((x) + ((__divisor) / 2)) / (__divisor)) + DIV_ROUND_CLOSEST(x,__divisor) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
* ATM: horizon, fix hrz_probe fail pathJiri Slaby2008-11-291-1/+1
| | | | | | | One fail path in hrz_probe omitted device disable. Fix it. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/atm: Use DIV_ROUND_UPJulia Lawall2008-09-221-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. In the case of the file drivers/atm/eni.c, I am a little bit suspicious of the -1 at the end of the affected expression. Please check that that is what is wanted. An extract of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ #include <linux/kernel.h> @depends on haskernel@ expression n,d; @@ ( - (n + d - 1) / d + DIV_ROUND_UP(n,d) | - (n + (d - 1)) / d + DIV_ROUND_UP(n,d) ) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP((n),d) + DIV_ROUND_UP(n,d) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP(n,(d)) + DIV_ROUND_UP(n,d) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM] drivers/atm/horizon.c: stop inlining largish static functionsDenys Vlasenko2008-04-131-12/+12
| | | | | | | | | | | | | | | | | | | | | drivers/atm/horizon.c has unusually large number of static inline functions - 36. I looked through them. Most of them seems to be small enough, but a few are big, others are using udelay or busy loop, and as such are better not be inlined. This patch removes "inline" from these static functions (regardless of number of callsites - gcc nowadays auto-inlines statics with one callsite). Size difference for 32bit x86: text data bss dec hex filename 8201 180 6 8387 20c3 linux-2.6-ALLYES/drivers/atm/horizon.o 7840 180 6 8026 1f5a linux-2.6.inline-ALLYES/drivers/atm/horizon.o Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Eliminate pointless casts from void* in a few driver irq handlers.Jeff Garzik2007-10-231-2/+3
| | | | Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* [PATCH] horizon.c: missing __devinitAl Viro2007-01-231-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [ATM] horizon: read_bia() needs to be __devinitDavid S. Miller2006-10-241-1/+1
| | | | | | Thanks to Randy Dunlap. Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: No need to return voidTobias Klauser2006-10-211-2/+2
| | | | | | | | | The module_exit function has return-type void and pci_unregister_driver() returns void anyway. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Various drivers' irq handlers: kill dead code, needless castsJeff Garzik2006-10-061-9/+0
| | | | | | | | | | | | | | | | - Eliminate casts to/from void* - Eliminate checks for conditions that never occur. These typically fall into two classes: 1) Checking for 'dev_id == NULL', then it is never called with NULL as an argument. 2) Checking for invalid irq number, when the only caller (the system) guarantees the irq handler is called with the proper 'irq' number argument. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* [ATM]: kmalloc to kzalloc patches for drivers/atmOm Narasimhan2006-10-041-3/+1
| | | | | | Signed-off-by: Om Narasimhan <om.turyx@gmail.com> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] irq-flags: misc drivers: Use the new IRQF_ constantsThomas Gleixner2006-07-021-1/+1
| | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ATM]: [horizon] fix sparse warningsDave Jones2005-11-101-2/+2
| | | | | | Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Chas Williams <cmas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Store skb->timestamp as offset to a base timestampPatrick McHardy2005-08-291-1/+1
| | | | | | | Reduces skb size by 8 bytes on 64-bit. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+2953
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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