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* Merge branch 'release' of ↵Linus Torvalds2011-03-161-1/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] tioca: Fix assignment from incompatible pointer warnings [IA64] mca.c: Fix cast from integer to pointer warning [IA64] setup.c Typo fix "Architechtuallly" [IA64] Add CONFIG_MISC_DEVICES=y to configs that need it. [IA64] disable interrupts at end of ia64_mca_cpe_int_handler() [IA64] Add DMA_ERROR_CODE define. pstore: fix build warning for unused return value from sysfs_create_file pstore: X86 platform interface using ACPI/APEI/ERST pstore: new filesystem interface to platform persistent storage
| * Pull misc-2.6.39 into release branchTony Luck2011-03-161-1/+4
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| | * [IA64] mca.c: Fix cast from integer to pointer warningJeff Mahoney2011-03-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64_mca_cpu_init has a void *data local variable that is assigned the value from either __get_free_pages() or mca_bootmem(). The problem is that __get_free_pages returns an unsigned long and mca_bootmem, via alloc_bootmem(), returns a void *. format_mca_init_stack takes the void *, and it's also used with __pa(), but that casts it to long anyway. This results in the following build warning: arch/ia64/kernel/mca.c:1898: warning: assignment makes pointer from integer without a cast Cast the return of __get_free_pages to a void * to avoid the warning. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | * [IA64] disable interrupts at end of ia64_mca_cpe_int_handler()Tony Luck2011-02-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SAL requires that interrupts be enabled when making some calls to it to pick up error records, so we enable interrupts inside this handler. We should disable them again at the end. Found by a new WARN_ONCE that tglx added to handle_irq_event_percpu() Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | Merge branch 'for-2.6.39' of ↵Linus Torvalds2011-03-161-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support percpu: Generic support for this_cpu_cmpxchg_double() alpha: use L1_CACHE_BYTES for cacheline size in the linker script percpu: align percpu readmostly subsection to cacheline Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the percpu alignment having changed ("x86: Reduce back the alignment of the per-CPU data section")
| * | | percpu: align percpu readmostly subsection to cachelineTejun Heo2011-01-251-1/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
* / / ia64: Switch do_timer() to xtime_update()Torben Hohn2011-01-311-14/+5
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | local_cpu_data->itm_next = new_itm; does not need to be protected by xtime_lock. xtime_update() takes the lock itself. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: hch@infradead.org Cc: yong.zhang0@gmail.com LKML-Reference: <20110127145956.23248.49107.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | Merge branch 'idle-release' of ↵Linus Torvalds2011-01-131-5/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: cpuidle/x86/perf: fix power:cpu_idle double end events and throw cpu_idle events from the cpuidle layer intel_idle: open broadcast clock event cpuidle: CPUIDLE_FLAG_CHECK_BM is omap3_idle specific cpuidle: CPUIDLE_FLAG_TLB_FLUSHED is specific to intel_idle cpuidle: delete unused CPUIDLE_FLAG_SHALLOW, BALANCED, DEEP definitions SH, cpuidle: delete use of NOP CPUIDLE_FLAGS_SHALLOW cpuidle: delete NOP CPUIDLE_FLAG_POLL ACPI: processor_idle: delete use of NOP CPUIDLE_FLAGs cpuidle: Rename X86 specific idle poll state[0] from C0 to POLL ACPI, intel_idle: Cleanup idle= internal variables cpuidle: Make cpuidle_enable_device() call poll_idle_init() intel_idle: update Sandy Bridge core C-state residency targets
| * | Merge branch 'linus' into idle-testLen Brown2011-01-125-10/+22
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| * | ACPI, intel_idle: Cleanup idle= internal variablesThomas Renninger2011-01-121-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Having four variables for the same thing: idle_halt, idle_nomwait, force_mwait and boot_option_idle_overrides is rather confusing and unnecessary complex. if idle= boot param is passed, only set up one variable: boot_option_idle_overrides Introduces following functional changes/fixes: - intel_idle driver does not register if any idle=xy boot param is passed. - processor_idle.c will also not register a cpuidle driver and get active if idle=halt is passed. Before a cpuidle driver with one (C1, halt) state got registered Now the default_idle function will be used which finally uses the same idle call to enter sleep state (safe_halt()), but without registering a whole cpuidle driver. That means idle= param will always avoid cpuidle drivers to register with one exception (same behavior as before): idle=nomwait may still register acpi_idle cpuidle driver, but C1 will not use mwait, but hlt. This can be a workaround for IO based deeper sleep states where C1 mwait causes problems. Signed-off-by: Thomas Renninger <trenn@suse.de> cc: x86@kernel.org Signed-off-by: Len Brown <len.brown@intel.com>
* | | [IA64] fix build error - arch/ia64/kernel/perfmon.cTony Luck2011-01-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/ia64/kernel/perfmon.c:621: error: duplicate 'static' Introduced by commit c74a1cbb3cac348f276fabc381758f5b0b4713b2 pass default dentry_operations to mount_pseudo() Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | Merge branch 'release' of ↵Linus Torvalds2011-01-131-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix format warning in arch/ia64/kernel/acpi.c
| * | | [IA64] Fix format warning in arch/ia64/kernel/acpi.cTony Luck2011-01-121-1/+1
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | arch/ia64/kernel/acpi.c:481: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long unsigned int’ Introduced by commit 05f2f274c8a8747bbfb13ac8ee0c27d5f2ad8510 [IA64] Avoid array overflow if there are too many cpus in SRAT table Signed-off-by: Tony Luck <tony.luck@intel.com>
* / | pass default dentry_operations to mount_pseudo()Al Viro2011-01-121-2/+4
|/ / | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'release' of ↵Linus Torvalds2011-01-105-7/+19
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Avoid array overflow if there are too many cpus in SRAT table [IA64] Remove unlikely from cpu_is_offline [IA64] irq_ia64, use set_irq_chip [IA64] perfmon: Change vmalloc to vzalloc and drop memset. [IA64] eliminate race condition in smp_flush_tlb_mm
| * | [IA64] Avoid array overflow if there are too many cpus in SRAT tableTony Luck2011-01-071-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | acpi_numa_init() has to parse the whole SRAT table, even if the kernel wants to limit the number of cpus it will use (because the ones it is going to use may be described by entries at the end of the SRAT table). Avoid overflowing the node_cpuid array. Reported-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Remove unlikely from cpu_is_offlineJoe Perches2010-12-281-1/+1
| | | | | | | | | | | | | | | | | | | | | cpu_is_offline already uses unlikely internally. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] irq_ia64, use set_irq_chipJiri Slaby2010-12-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Don't access desc->chip directly, because them chip member will disappear some time later. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] perfmon: Change vmalloc to vzalloc and drop memset.Jesper Juhl2010-12-281-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | vzalloc() nicely zeroes memory for us, so we don't have to do a vmalloc() and then manually memset() the returned memory when all we want is for it to be zero. Patch changes this for pfm_rvmalloc(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] eliminate race condition in smp_flush_tlb_mmDimitri Sivanich2010-12-281-3/+10
| |/ | | | | | | | | | | | | | | | | | | | | | | A race condition exists within smp_call_function_many() when called from smp_flush_tlb_mm(). On rare occasions the cpu_vm_mask can be cleared while smp_call_function_many is executing, occasionally resulting in a hung process. Make a copy of the mask prior to calling smp_call_function_many(). Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | fs: scale mntget/mntputNick Piggin2011-01-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem that this patch aims to fix is vfsmount refcounting scalability. We need to take a reference on the vfsmount for every successful path lookup, which often go to the same mount point. The fundamental difficulty is that a "simple" reference count can never be made scalable, because any time a reference is dropped, we must check whether that was the last reference. To do that requires communication with all other CPUs that may have taken a reference count. We can make refcounts more scalable in a couple of ways, involving keeping distributed counters, and checking for the global-zero condition less frequently. - check the global sum once every interval (this will delay zero detection for some interval, so it's probably a showstopper for vfsmounts). - keep a local count and only taking the global sum when local reaches 0 (this is difficult for vfsmounts, because we can't hold preempt off for the life of a reference, so a counter would need to be per-thread or tied strongly to a particular CPU which requires more locking). - keep a local difference of increments and decrements, which allows us to sum the total difference and hence find the refcount when summing all CPUs. Then, keep a single integer "long" refcount for slow and long lasting references, and only take the global sum of local counters when the long refcount is 0. This last scheme is what I implemented here. Attached mounts and process root and working directory references are "long" references, and everything else is a short reference. This allows scalable vfsmount references during path walking over mounted subtrees and unattached (lazy umounted) mounts with processes still running in them. This results in one fewer atomic op in the fastpath: mntget is now just a per-CPU inc, rather than an atomic inc; and mntput just requires a spinlock and non-atomic decrement in the common case. However code is otherwise bigger and heavier, so single threaded performance is basically a wash. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
* | fs: dcache reduce branches in lookup pathNick Piggin2011-01-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Reduce some branches and memory accesses in dcache lookup by adding dentry flags to indicate common d_ops are set, rather than having to check them. This saves a pointer memory access (dentry->d_op) in common path lookup situations, and saves another pointer load and branch in cases where we have d_op but not the particular operation. Patched with: git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i Signed-off-by: Nick Piggin <npiggin@kernel.dk>
* | fs: change d_delete semanticsNick Piggin2011-01-071-1/+1
|/ | | | | | | | | | | | Change d_delete from a dentry deletion notification to a dentry caching advise, more like ->drop_inode. Require it to be constant and idempotent, and not take d_lock. This is how all existing filesystems use the callback anyway. This makes fine grained dentry locking of dput and dentry lru scanning much simpler. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
* convert get_sb_pseudo() usersAl Viro2010-10-291-5/+4
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ptrace: change signature of arch_ptrace()Namhyung Kim2010-10-271-1/+2
| | | | | | | | | | | | | | | Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: <linux-arch@vger.kernel.org> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bklLinus Torvalds2010-10-221-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl: vfs: make no_llseek the default vfs: don't use BKL in default_llseek llseek: automatically add .llseek fop libfs: use generic_file_llseek for simple_attr mac80211: disallow seeks in minstrel debug code lirc: make chardev nonseekable viotape: use noop_llseek raw: use explicit llseek file operations ibmasmfs: use generic_file_llseek spufs: use llseek in all file operations arm/omap: use generic_file_llseek in iommu_debug lkdtm: use generic_file_llseek in debugfs net/wireless: use generic_file_llseek in debugfs drm: use noop_llseek
| * llseek: automatically add .llseek fopArnd Bergmann2010-10-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
* | Merge branch 'release' of ↵Linus Torvalds2010-10-2111-87/+101
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Cannot use register_percpu_irq() from ia64_mca_init() [IA64] Initialize interrupts later (from init_IRQ()) [IA64] enable ARCH_DMA_ADDR_T_64BIT [IA64] ioc3_serial: release resources in error return path [IA64] Stop using the deprecated __do_IRQ() code path [IA64] Remove unnecessary casts of private_data in perfmon.c [IA64] Fix missing iounmap in error path in cyclone.c [IA64] salinfo: sema_init instead of init_MUTEX [IA64] xen: use ARRAY_SIZE macro in xen_pv_ops.c [IA64] Use static const char * const in palinfo.c [IA64] remove asm/compat.h [IA64] Add CONFIG_STACKTRACE_SUPPORT [IA64] Move local_softirq_pending() definition [IA64] iommu: Add a dummy iommu_table.h file in IA64. [IA64] unwind - optimise linked-list searches for modules [IA64] unwind: remove preprocesser noise, and correct comment
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| *-------. \ Merge branches 'release', 'drop_do_IRQ', 'fix_early_irq', 'misc-2.6.37', ↵Tony Luck2010-10-1211-83/+92
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | 'next-fixes', 'optimize-unwind', 'remove-compat-h' and 'stack_trace' into release
| | | | | | * | [IA64] Add CONFIG_STACKTRACE_SUPPORTTony Luck2010-09-232-0/+40
| | | | | |/ / | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several Linux features are dependent on stack trace support. Add it so they can be enabled. Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | | | * | [IA64] unwind - optimise linked-list searches for modulesPhil Carmody2010-09-141-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's clear from the comment in the code about keeping the kernel's unwind table at the front of the list that some attention has been paid to access patterns. Tests on other architectures have shown that a move-to-front optimisation improves searches dramatically. Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | | | * | [IA64] unwind: remove preprocesser noise, and correct commentPhil Carmody2010-09-141-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The expression in the comment was mis-bracketted. There was also no need to introduce a coding-style breaking macro for a single use, so just made it a static const. Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | * | | | [IA64] Remove unnecessary casts of private_data in perfmon.cJoe Perches2010-09-231-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | * | | | [IA64] Fix missing iounmap in error path in cyclone.cJulia Lawall2010-09-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By moving the iounmap up above the test, it takes place whether the test succeeds or fails. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | * | | | [IA64] salinfo: sema_init instead of init_MUTEXThomas Gleixner2010-09-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get rid of init_MUTEX[_LOCKED]() and use sema_init() instead. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | | * | | | [IA64] Use static const char * const in palinfo.cJoe Perches2010-09-231-1/+1
| | | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| | * | | | [IA64] Cannot use register_percpu_irq() from ia64_mca_init()Tony Luck2010-10-071-19/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is called before early_irq_init() which will clobber any registrations made too early. Move the calls to ia64_mca_late_init(). Signed-off-by: Tony Luck <tomy.luck@intel.com>
| | * | | | [IA64] Initialize interrupts later (from init_IRQ())Tony Luck2010-10-053-51/+5
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thomas Gleixner is cleaning up the generic irq code, and ia64 ran into problems because it calls register_intr() before early_irq_init() is called. Move the call to acpi_boot_init() from setup_arch() to init_IRQ(). As a bonus - moving the call later means we no longer need the hacks in iosapic.c to switch between the bootmem and regular allocator - we can just used kzalloc() for allocation. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * / / / [IA64] Stop using the deprecated __do_IRQ() code pathTony Luck2010-09-272-4/+9
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thomas Gleixner <tglx@linutronix.de> wrote: >__do_IRQ() has been deprecated after a two years migration phase in >commit 0e57aa1. Since then another 18 months have gone by ... Mostly trivial stuff for this. The only tricky part was realizing that the new handler_*_irq() paths do not use desc->chip->end(irq). Not a problem for the edge case as the ia64 iosapic routine for that was nop(). But the "level" case handled interrupt migration there. Just use a slightly modified version of the "end" routine as "unmask" for the level triggered case. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | dmar: Convert to new irq chip functionsThomas Gleixner2010-10-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: David Woodhouse <dwmw2@infradead.org>
* | | | pci: Convert msi to new irq_chip functionsThomas Gleixner2010-10-121-2/+2
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Tony Luck <tony.luck@intel.com> Cc: Russell King <linux@arm.linux.org.uk>
* / / [IA64] Optimize ticket spinlocks in fsys_rt_sigprocmaskPetr Tesarik2010-09-151-31/+11
|/ / | | | | | | | | | | | | | | | | Tony's fix (f574c843191728d9407b766a027f779dcd27b272) has a small bug, it incorrectly uses "r3" as a scratch register in the first of the two unlock paths ... it is also inefficient. Optimize the fast path again. Signed-off-by: Petr Tesarik <ptesarik@suse.cz> Signed-off-by: Tony Luck <tony.luck@intel.com>
* / [IA64] fix siglockTony Luck2010-09-091-7/+39
|/ | | | | | | | | | | | | | | | | When ia64 converted to using ticket locks, an inline implementation of trylock/unlock in fsys.S was missed. This was not noticed because in most circumstances it simply resulted in using the slow path because the siglock was apparently not available (under old spinlock rules). Problems occur when the ticket spinlock has value 0x0 (when first initialised, or when it wraps around). At this point the fsys.S code acquires the lock (changing the 0x0 to 0x1. If another process attempts to get the lock at this point, it will change the value from 0x1 to 0x2 (using new ticket lock rules). Then the fsys.S code will free the lock using old spinlock rules by writing 0x0 to it. From here a variety of bad things can happen. Signed-off-by: Tony Luck <tony.luck@intel.com>
* Make do_execve() take a const filename pointerDavid Howells2010-08-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'release' of ↵Linus Torvalds2010-08-131-0/+3
|\ | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Add latest crop of syscalls [IA64] Fix 64-bit atomic routines to return "long"
| * [IA64] Add latest crop of syscallsTony Luck2010-08-131-0/+3
| | | | | | | | | | | | | | Three new syscalls for 2.6.36: prlimit64, fanotify_init and fanotify_mark. Wire up the ia64 syscall table for them. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Mark arguments to certain syscalls as being constDavid Howells2010-08-131-1/+1
|/ | | | | | | | | | | | | | | | Mark arguments to certain system calls as being const where they should be but aren't. The list includes: (*) The filename arguments of various stat syscalls, execve(), various utimes syscalls and some mount syscalls. (*) The filename arguments of some syscall helpers relating to the above. (*) The buffer argument of various write syscalls. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-08-111-7/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: isofs: Fix lseek() to position beyond 4 GB vfs: remove unused MNT_STRICTATIME vfs: show unreachable paths in getcwd and proc vfs: only add " (deleted)" where necessary vfs: add prepend_path() helper vfs: __d_path: dont prepend the name of the root dentry ia64: perfmon: add d_dname method vfs: add helpers to get root and pwd cachefiles: use path_get instead of lone dget fs/sysv/super.c: add support for non-PDP11 v7 filesystems V7: Adjust sanity checks for some volumes Add v7 alias v9fs: fixup for inode_setattr being removed Manual merge to take Al's version of the fs/sysv/super.c file: it merged cleanly, but Al had removed an unnecessary header include, so his side was better.
| * ia64: perfmon: add d_dname methodMiklos Szeredi2010-08-111-7/+8
| | | | | | | | | | | | | | | | | | | | Switch ia64/perfmon to using the d_dname() instead of relying on __d_path() to prepend the name of the root dentry to the path. CC: Tony Luck <tony.luck@intel.com> CC: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | dma-mapping: unify dma_get_cache_alignment implementationsFUJITA Tomonori2010-08-111-6/+0
|/ | | | | | | | | | | | | | | | dma_get_cache_alignment returns the minimum DMA alignment. Architectures defines it as ARCH_DMA_MINALIGN (formally ARCH_KMALLOC_MINALIGN). So we can unify dma_get_cache_alignment implementations. Note that some architectures implement dma_get_cache_alignment wrongly. dma_get_cache_alignment() should return the minimum DMA alignment. So fully-coherent architectures should return 1. This patch also fixes this issue. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 11:04:46 +0000