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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott11 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
v2.6.15-rc1commit cd52d1ee9a...Linus Torvalds20 years
v2.6.14commit 741b2252a5...Linus Torvalds20 years
v2.6.14-rc5commit 93918e9afc...Linus Torvalds20 years
v2.6.14-rc4commit 907a426179...Linus Torvalds20 years
v2.6.14-rc3commit 1c9426e8a5...Linus Torvalds20 years
v2.6.14-rc2commit 676d55ae30...Linus Torvalds20 years
v2.6.14-rc1commit 2f4ba45a75...Linus Torvalds20 years
v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
v2.6.13-rc7commit 0572e3da3f...Linus Torvalds20 years
v2.6.13-rc6commit 6fc32179de...Linus Torvalds20 years
v2.6.13-rc5commit 9a351e30d7...Linus Torvalds20 years
v2.6.13-rc4commit 6395352334...Linus Torvalds20 years
v2.6.11tree c39ae07f39...
v2.6.11-treetree c39ae07f39...
v2.6.12commit 9ee1c939d1...
v2.6.12-rc2commit 1da177e4c3...
v2.6.12-rc3commit a2755a80f4...
v2.6.12-rc4commit 88d7bd8cb9...
v2.6.12-rc5commit 2a24ab628a...
v2.6.12-rc6commit 7cef5677ef...
v2.6.13-rc1commit 4c91aedb75...
v2.6.13-rc2commit a18bcb7450...
v2.6.13-rc3commit c32511e271...
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-08 00:59:42 -0400
">struct acpi_table_header)) INVALID_TABLE("Table smaller than ACPI header", cpio_path, file.name); table = file.data; for (sig = 0; table_sigs[sig]; sig++) if (!memcmp(table->signature, table_sigs[sig], 4)) break; if (!table_sigs[sig]) INVALID_TABLE("Unknown signature", cpio_path, file.name); if (file.size != table->length) INVALID_TABLE("File length does not match table length", cpio_path, file.name); if (acpi_table_checksum(file.data, table->length)) INVALID_TABLE("Bad table checksum", cpio_path, file.name); pr_info("%4.4s ACPI table found in initrd [%s%s][0x%x]\n", table->signature, cpio_path, file.name, table->length); all_tables_size += table->length; early_initrd_files[table_nr].data = file.data; early_initrd_files[table_nr].size = file.size; table_nr++; } if (table_nr == 0) return; acpi_tables_addr = memblock_find_in_range(0, max_low_pfn_mapped << PAGE_SHIFT, all_tables_size, PAGE_SIZE); if (!acpi_tables_addr) { WARN_ON(1); return; } /* * Only calling e820_add_reserve does not work and the * tables are invalid (memory got used) later. * memblock_reserve works as expected and the tables won't get modified. * But it's not enough on X86 because ioremap will * complain later (used by acpi_os_map_memory) that the pages * that should get mapped are not marked "reserved". * Both memblock_reserve and e820_add_region (via arch_reserve_mem_area) * works fine. */ memblock_reserve(acpi_tables_addr, acpi_tables_addr + all_tables_size); arch_reserve_mem_area(acpi_tables_addr, all_tables_size); p = early_ioremap(acpi_tables_addr, all_tables_size); for (no = 0; no < table_nr; no++) { memcpy(p + total_offset, early_initrd_files[no].data, early_initrd_files[no].size); total_offset += early_initrd_files[no].size; } early_iounmap(p, all_tables_size); } #endif /* CONFIG_ACPI_INITRD_TABLE_OVERRIDE */ static void acpi_table_taint(struct acpi_table_header *table) { pr_warn(PREFIX "Override [%4.4s-%8.8s], this is unsafe: tainting kernel\n", table->signature, table->oem_table_id); add_taint(TAINT_OVERRIDDEN_ACPI_TABLE, LOCKDEP_NOW_UNRELIABLE); } acpi_status acpi_os_table_override(struct acpi_table_header * existing_table, struct acpi_table_header ** new_table) { if (!existing_table || !new_table) return AE_BAD_PARAMETER; *new_table = NULL; #ifdef CONFIG_ACPI_CUSTOM_DSDT if (strncmp(existing_table->signature, "DSDT", 4) == 0) *new_table = (struct acpi_table_header *)AmlCode; #endif if (*new_table != NULL) acpi_table_taint(existing_table); return AE_OK; } acpi_status acpi_os_physical_table_override(struct acpi_table_header *existing_table, acpi_physical_address *address, u32 *table_length) { #ifndef CONFIG_ACPI_INITRD_TABLE_OVERRIDE *table_length = 0; *address = 0; return AE_OK; #else int table_offset = 0; struct acpi_table_header *table; *table_length = 0; *address = 0; if (!acpi_tables_addr) return AE_OK; do { if (table_offset + ACPI_HEADER_SIZE > all_tables_size) { WARN_ON(1); return AE_OK; } table = acpi_os_map_memory(acpi_tables_addr + table_offset, ACPI_HEADER_SIZE); if (table_offset + table->length > all_tables_size) { acpi_os_unmap_memory(table, ACPI_HEADER_SIZE); WARN_ON(1); return AE_OK; } table_offset += table->length; if (memcmp(existing_table->signature, table->signature, 4)) { acpi_os_unmap_memory(table, ACPI_HEADER_SIZE); continue; } /* Only override tables with matching oem id */ if (memcmp(table->oem_table_id, existing_table->oem_table_id, ACPI_OEM_TABLE_ID_SIZE)) { acpi_os_unmap_memory(table, ACPI_HEADER_SIZE); continue; } table_offset -= table->length; *table_length = table->length; acpi_os_unmap_memory(table, ACPI_HEADER_SIZE); *address = acpi_tables_addr + table_offset; break; } while (table_offset + ACPI_HEADER_SIZE < all_tables_size); if (*address != 0) acpi_table_taint(existing_table); return AE_OK; #endif } static irqreturn_t acpi_irq(int irq, void *dev_id) { u32 handled; handled = (*acpi_irq_handler) (acpi_irq_context); if (handled) { acpi_irq_handled++; return IRQ_HANDLED; } else { acpi_irq_not_handled++; return IRQ_NONE; } } acpi_status acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, void *context) { unsigned int irq; acpi_irq_stats_init(); /* * ACPI interrupts different from the SCI in our copy of the FADT are * not supported. */ if (gsi != acpi_gbl_FADT.sci_interrupt) return AE_BAD_PARAMETER; if (acpi_irq_handler) return AE_ALREADY_ACQUIRED; if (acpi_gsi_to_irq(gsi, &irq) < 0) { printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", gsi); return AE_OK; } acpi_irq_handler = handler; acpi_irq_context = context; if (request_irq(irq, acpi_irq, IRQF_SHARED | IRQF_NO_SUSPEND, "acpi", acpi_irq)) { printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); acpi_irq_handler = NULL; return AE_NOT_ACQUIRED; } return AE_OK; } acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) { if (irq != acpi_gbl_FADT.sci_interrupt) return AE_BAD_PARAMETER; free_irq(irq, acpi_irq); acpi_irq_handler = NULL; return AE_OK; } /* * Running in interpreter thread context, safe to sleep */ void acpi_os_sleep(u64 ms) { schedule_timeout_interruptible(msecs_to_jiffies(ms)); } void acpi_os_stall(u32 us) { while (us) { u32 delay = 1000; if (delay > us) delay = us; udelay(delay); touch_nmi_watchdog(); us -= delay; } } /* * Support ACPI 3.0 AML Timer operand * Returns 64-bit free-running, monotonically increasing timer * with 100ns granularity */ u64 acpi_os_get_timer(void) { static u64 t; #ifdef CONFIG_HPET /* TBD: use HPET if available */ #endif #ifdef CONFIG_X86_PM_TIMER /* TBD: default to PM timer if HPET was not available */ #endif if (!t) printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); return ++t; } acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) { u32 dummy; if (!value) value = &dummy; *value = 0; if (width <= 8) { *(u8 *) value = inb(port); } else if (width <= 16) { *(u16 *) value = inw(port); } else if (width <= 32) { *(u32 *) value = inl(port); } else { BUG(); } return AE_OK; } EXPORT_SYMBOL(acpi_os_read_port); acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) { if (width <= 8) { outb(value, port); } else if (width <= 16) { outw(value, port); } else if (width <= 32) { outl(value, port); } else { BUG(); } return AE_OK; } EXPORT_SYMBOL(acpi_os_write_port); #ifdef readq static inline u64 read64(const volatile void __iomem *addr) { return readq(addr); } #else static inline u64 read64(const volatile void __iomem *addr) { u64 l, h; l = readl(addr); h = readl(addr+4); return l | (h << 32); } #endif acpi_status acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width) { void __iomem *virt_addr; unsigned int size = width / 8; bool unmap = false; u64 dummy; rcu_read_lock(); virt_addr = acpi_map_vaddr_lookup(phys_addr, size); if (!virt_addr) { rcu_read_unlock(); virt_addr = acpi_os_ioremap(phys_addr, size); if (!virt_addr) return AE_BAD_ADDRESS; unmap = true; } if (!value) value = &dummy; switch (width) { case 8: *(u8 *) value = readb(virt_addr); break; case 16: *(u16 *) value = readw(virt_addr); break; case 32: *(u32 *) value = readl(virt_addr); break; case 64: *(u64 *) value = read64(virt_addr); break; default: BUG(); } if (unmap) iounmap(virt_addr); else rcu_read_unlock(); return AE_OK; } #ifdef writeq static inline void write64(u64 val, volatile void __iomem *addr) { writeq(val, addr); } #else static inline void write64(u64 val, volatile void __iomem *addr) { writel(val, addr); writel(val>>32, addr+4); } #endif acpi_status acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width) { void __iomem *virt_addr; unsigned int size = width / 8; bool unmap = false; rcu_read_lock(); virt_addr = acpi_map_vaddr_lookup(phys_addr, size); if (!virt_addr) { rcu_read_unlock(); virt_addr = acpi_os_ioremap(phys_addr, size); if (!virt_addr) return AE_BAD_ADDRESS; unmap = true; } switch (width) { case 8: writeb(value, virt_addr); break; case 16: writew(value, virt_addr); break; case 32: writel(value, virt_addr); break; case 64: write64(value, virt_addr); break; default: BUG(); } if (unmap) iounmap(virt_addr); else rcu_read_unlock(); return AE_OK; } acpi_status acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, u64 *value, u32 width) { int result, size; u32 value32; if (!value) return AE_BAD_PARAMETER; switch (width) { case 8: size = 1; break; case 16: size = 2; break; case 32: size = 4; break; default: return AE_ERROR; } result = raw_pci_read(pci_id->segment, pci_id->bus, PCI_DEVFN(pci_id->device, pci_id->function), reg, size, &value32); *value = value32; return (result ? AE_ERROR : AE_OK); } acpi_status acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, u64 value, u32 width) { int result, size; switch (width) { case 8: size = 1; break; case 16: size = 2; break; case 32: size = 4; break; default: return AE_ERROR; } result = raw_pci_write(pci_id->segment, pci_id->bus, PCI_DEVFN(pci_id->device, pci_id->function), reg, size, value); return (result ? AE_ERROR : AE_OK); } static void acpi_os_execute_deferred(struct work_struct *work) { struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); if (dpc->wait) acpi_os_wait_events_complete(); dpc->function(dpc->context); kfree(dpc); } /******************************************************************************* * * FUNCTION: acpi_os_execute * * PARAMETERS: Type - Type of the callback * Function - Function to be executed * Context - Function parameters * * RETURN: Status * * DESCRIPTION: Depending on type, either queues function for deferred execution or * immediately executes function on a separate thread. * ******************************************************************************/ static acpi_status __acpi_os_execute(acpi_execute_type type, acpi_osd_exec_callback function, void *context, int hp) { acpi_status status = AE_OK; struct acpi_os_dpc *dpc; struct workqueue_struct *queue; int ret; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Scheduling function [%p(%p)] for deferred execution.\n", function, context)); /* * Allocate/initialize DPC structure. Note that this memory will be * freed by the callee. The kernel handles the work_struct list in a * way that allows us to also free its memory inside the callee. * Because we may want to schedule several tasks with different * parameters we can't use the approach some kernel code uses of * having a static work_struct. */ dpc = kzalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); if (!dpc) return AE_NO_MEMORY; dpc->function = function; dpc->context = context; /* * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq * because the hotplug code may call driver .remove() functions, * which invoke flush_scheduled_work/acpi_os_wait_events_complete * to flush these workqueues. * * To prevent lockdep from complaining unnecessarily, make sure that * there is a different static lockdep key for each workqueue by using * INIT_WORK() for each of them separately. */ if (hp) { queue = kacpi_hotplug_wq; dpc->wait = 1; INIT_WORK(&dpc->work, acpi_os_execute_deferred); } else if (type == OSL_NOTIFY_HANDLER) { queue = kacpi_notify_wq; INIT_WORK(&dpc->work, acpi_os_execute_deferred); } else { queue = kacpid_wq; INIT_WORK(&dpc->work, acpi_os_execute_deferred); } /* * On some machines, a software-initiated SMI causes corruption unless * the SMI runs on CPU 0. An SMI can be initiated by any AML, but * typically it's done in GPE-related methods that are run via * workqueues, so we can avoid the known corruption cases by always * queueing on CPU 0. */ ret = queue_work_on(0, queue, &dpc->work); if (!ret) { printk(KERN_ERR PREFIX "Call to queue_work() failed.\n"); status = AE_ERROR; kfree(dpc); } return status; } acpi_status acpi_os_execute(acpi_execute_type type, acpi_osd_exec_callback function, void *context) { return __acpi_os_execute(type, function, context, 0); } EXPORT_SYMBOL(acpi_os_execute); acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context) { return __acpi_os_execute(0, function, context, 1); } EXPORT_SYMBOL(acpi_os_hotplug_execute); void acpi_os_wait_events_complete(void) { flush_workqueue(kacpid_wq); flush_workqueue(kacpi_notify_wq); } EXPORT_SYMBOL(acpi_os_wait_events_complete); acpi_status acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) { struct semaphore *sem = NULL; sem = acpi_os_allocate(sizeof(struct semaphore)); if (!sem) return AE_NO_MEMORY; memset(sem, 0, sizeof(struct semaphore)); sema_init(sem, initial_units); *handle = (acpi_handle *) sem; ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", *handle, initial_units)); return AE_OK; } /* * TODO: A better way to delete semaphores? Linux doesn't have a * 'delete_semaphore()' function -- may result in an invalid * pointer dereference for non-synchronized consumers. Should * we at least check for blocked threads and signal/cancel them? */ acpi_status acpi_os_delete_semaphore(acpi_handle handle) { struct semaphore *sem = (struct semaphore *)handle; if (!sem) return AE_BAD_PARAMETER; ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); BUG_ON(!list_empty(&sem->wait_list)); kfree(sem); sem = NULL; return AE_OK; } /* * TODO: Support for units > 1? */ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) { acpi_status status = AE_OK; struct semaphore *sem = (struct semaphore *)handle; long jiffies; int ret = 0; if (!sem || (units < 1)) return AE_BAD_PARAMETER; if (units > 1) return AE_SUPPORT; ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", handle, units, timeout)); if (timeout == ACPI_WAIT_FOREVER) jiffies = MAX_SCHEDULE_TIMEOUT; else jiffies = msecs_to_jiffies(timeout); ret = down_timeout(sem, jiffies); if (ret) status = AE_TIME; if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Failed to acquire semaphore[%p|%d|%d], %s", handle, units, timeout, acpi_format_exception(status))); } else { ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Acquired semaphore[%p|%d|%d]", handle, units, timeout)); } return status; } /* * TODO: Support for units > 1? */ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) { struct semaphore *sem = (struct semaphore *)handle; if (!sem || (units < 1)) return AE_BAD_PARAMETER; if (units > 1) return AE_SUPPORT; ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, units)); up(sem); return AE_OK; } #ifdef ACPI_FUTURE_USAGE u32 acpi_os_get_line(char *buffer) { #ifdef ENABLE_DEBUGGER if (acpi_in_debugger) { u32 chars; kdb_read(buffer, sizeof(line_buf)); /* remove the CR kdb includes */ chars = strlen(buffer) - 1; buffer[chars] = '\0'; } #endif return 0; } #endif /* ACPI_FUTURE_USAGE */ acpi_status acpi_os_signal(u32 function, void *info) { switch (function) { case ACPI_SIGNAL_FATAL: printk(KERN_ERR PREFIX "Fatal opcode executed\n"); break; case ACPI_SIGNAL_BREAKPOINT: /* * AML Breakpoint * ACPI spec. says to treat it as a NOP unless * you are debugging. So if/when we integrate * AML debugger into the kernel debugger its * hook will go here. But until then it is * not useful to print anything on breakpoints. */ break; default: break; } return AE_OK; } static int __init acpi_os_name_setup(char *str) { char *p = acpi_os_name; int count = ACPI_MAX_OVERRIDE_LEN - 1; if (!str || !*str) return 0; for (; count-- && str && *str; str++) { if (isalnum(*str) || *str == ' ' || *str == ':') *p++ = *str; else if (*str == '\'' || *str == '"') continue; else break; } *p = 0; return 1; } __setup("acpi_os_name=", acpi_os_name_setup); #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ #define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */ struct osi_setup_entry { char string[OSI_STRING_LENGTH_MAX]; bool enable; }; static struct osi_setup_entry __initdata osi_setup_entries[OSI_STRING_ENTRIES_MAX] = { {"Module Device", true}, {"Processor Device", true}, {"3.0 _SCP Extensions", true}, {"Processor Aggregator Device", true}, }; void __init acpi_osi_setup(char *str) { struct osi_setup_entry *osi; bool enable = true; int i; if (!acpi_gbl_create_osi_method) return; if (str == NULL || *str == '\0') { printk(KERN_INFO PREFIX "_OSI method disabled\n"); acpi_gbl_create_osi_method = FALSE; return; } if (*str == '!') { str++; enable = false; } for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { osi = &osi_setup_entries[i]; if (!strcmp(osi->string, str)) { osi->enable = enable; break; } else if (osi->string[0] == '\0') { osi->enable = enable; strncpy(osi->string, str, OSI_STRING_LENGTH_MAX); break; } } } static void __init set_osi_linux(unsigned int enable) { if (osi_linux.enable != enable) osi_linux.enable = enable; if (osi_linux.enable) acpi_osi_setup("Linux"); else acpi_osi_setup("!Linux"); return; } static void __init acpi_cmdline_osi_linux(unsigned int enable) { osi_linux.cmdline = 1; /* cmdline set the default and override DMI */ osi_linux.dmi = 0; set_osi_linux(enable); return; } void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) { printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); if (enable == -1) return; osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ set_osi_linux(enable); return; } /* * Modify the list of "OS Interfaces" reported to BIOS via _OSI * * empty string disables _OSI * string starting with '!' disables that string * otherwise string is added to list, augmenting built-in strings */ static void __init acpi_osi_setup_late(void) { struct osi_setup_entry *osi; char *str; int i; acpi_status status; for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { osi = &osi_setup_entries[i]; str = osi->string; if (*str == '\0') break; if (osi->enable) { status = acpi_install_interface(str); if (ACPI_SUCCESS(status)) printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); } else { status = acpi_remove_interface(str); if (ACPI_SUCCESS(status)) printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); } } } static int __init osi_setup(char *str) { if (str && !strcmp("Linux", str)) acpi_cmdline_osi_linux(1); else if (str && !strcmp("!Linux", str)) acpi_cmdline_osi_linux(0); else acpi_osi_setup(str); return 1; } __setup("acpi_osi=", osi_setup); /* enable serialization to combat AE_ALREADY_EXISTS errors */ static int __init acpi_serialize_setup(char *str) { printk(KERN_INFO PREFIX "serialize enabled\n"); acpi_gbl_all_methods_serialized = TRUE; return 1; } __setup("acpi_serialize", acpi_serialize_setup); /* Check of resource interference between native drivers and ACPI * OperationRegions (SystemIO and System Memory only). * IO ports and memory declared in ACPI might be used by the ACPI subsystem * in arbitrary AML code and can interfere with legacy drivers. * acpi_enforce_resources= can be set to: * * - strict (default) (2) * -> further driver trying to access the resources will not load * - lax (1) * -> further driver trying to access the resources will load, but you * get a system message that something might go wrong... * * - no (0) * -> ACPI Operation Region resources will not be registered * */ #define ENFORCE_RESOURCES_STRICT 2 #define ENFORCE_RESOURCES_LAX 1 #define ENFORCE_RESOURCES_NO 0 static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; static int __init acpi_enforce_resources_setup(char *str) { if (str == NULL || *str == '\0') return 0; if (!strcmp("strict", str)) acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; else if (!strcmp("lax", str)) acpi_enforce_resources = ENFORCE_RESOURCES_LAX; else if (!strcmp("no", str)) acpi_enforce_resources = ENFORCE_RESOURCES_NO; return 1; } __setup("acpi_enforce_resources=", acpi_enforce_resources_setup); /* Check for resource conflicts between ACPI OperationRegions and native * drivers */ int acpi_check_resource_conflict(const struct resource *res) { acpi_adr_space_type space_id; acpi_size length; u8 warn = 0; int clash = 0; if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) return 0; if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM)) return 0; if (res->flags & IORESOURCE_IO) space_id = ACPI_ADR_SPACE_SYSTEM_IO; else space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY; length = res->end - res->start + 1; if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) warn = 1; clash = acpi_check_address_range(space_id, res->start, length, warn); if (clash) { if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) printk(KERN_NOTICE "ACPI: This conflict may" " cause random problems and system" " instability\n"); printk(KERN_INFO "ACPI: If an ACPI driver is available" " for this device, you should use it instead of" " the native driver\n"); } if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) return -EBUSY; } return 0; } EXPORT_SYMBOL(acpi_check_resource_conflict); int acpi_check_region(resource_size_t start, resource_size_t n, const char *name) { struct resource res = { .start = start, .end = start + n - 1, .name = name, .flags = IORESOURCE_IO, }; return acpi_check_resource_conflict(&res); } EXPORT_SYMBOL(acpi_check_region); /* * Let drivers know whether the resource checks are effective */ int acpi_resources_are_enforced(void) { return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT; } EXPORT_SYMBOL(acpi_resources_are_enforced); /* * Deallocate the memory for a spinlock. */ void acpi_os_delete_lock(acpi_spinlock handle) { ACPI_FREE(handle); } /* * Acquire a spinlock. * * handle is a pointer to the spinlock_t. */ acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) { acpi_cpu_flags flags; spin_lock_irqsave(lockp, flags); return flags; } /* * Release a spinlock. See above. */ void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) { spin_unlock_irqrestore(lockp, flags); } #ifndef ACPI_USE_LOCAL_CACHE /******************************************************************************* * * FUNCTION: acpi_os_create_cache * * PARAMETERS: name - Ascii name for the cache * size - Size of each cached object * depth - Maximum depth of the cache (in objects) <ignored> * cache - Where the new cache object is returned * * RETURN: status * * DESCRIPTION: Create a cache object * ******************************************************************************/ acpi_status acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) { *cache = kmem_cache_create(name, size, 0, 0, NULL); if (*cache == NULL) return AE_ERROR; else return AE_OK; } /******************************************************************************* * * FUNCTION: acpi_os_purge_cache * * PARAMETERS: Cache - Handle to cache object * * RETURN: Status * * DESCRIPTION: Free all objects within the requested cache. * ******************************************************************************/ acpi_status acpi_os_purge_cache(acpi_cache_t * cache) { kmem_cache_shrink(cache); return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_os_delete_cache * * PARAMETERS: Cache - Handle to cache object * * RETURN: Status * * DESCRIPTION: Free all objects within the requested cache and delete the * cache object. * ******************************************************************************/ acpi_status acpi_os_delete_cache(acpi_cache_t * cache) { kmem_cache_destroy(cache); return (AE_OK); } /******************************************************************************* * * FUNCTION: acpi_os_release_object * * PARAMETERS: Cache - Handle to cache object * Object - The object to be released * * RETURN: None * * DESCRIPTION: Release an object to the specified cache. If cache is full, * the object is deleted. * ******************************************************************************/ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) { kmem_cache_free(cache, object); return (AE_OK); } #endif acpi_status __init acpi_os_initialize(void) { acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block); acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block); acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block); acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block); return AE_OK; } acpi_status __init acpi_os_initialize1(void) { kacpid_wq = alloc_workqueue("kacpid", 0, 1); kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1); kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1); BUG_ON(!kacpid_wq); BUG_ON(!kacpi_notify_wq); BUG_ON(!kacpi_hotplug_wq); acpi_install_interface_handler(acpi_osi_handler); acpi_osi_setup_late(); return AE_OK; } acpi_status acpi_os_terminate(void) { if (acpi_irq_handler) { acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt, acpi_irq_handler); } acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block); acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block); acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block); acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block); destroy_workqueue(kacpid_wq);