* [PATCH v5 0/7] resource: introduce union(), intersection() API @ 2020-11-03 20:36 Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 1/7] resource: Simplify region_intersects() by reducing conditionals Andy Shevchenko ` (7 more replies) 0 siblings, 8 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Kuppuswamy Sathyanarayanan, Bjorn Helgaas, linux-pci Some users may want to use resource library to manage their own resources, besides existing users that open code union() and intersection() implementations. Provide a generic API for wider use. Changelog v5: - added test cases (Greg) Changelog v4: - added Rb tag (Rafael) - Cc'ed to LKML and Greg (Rafael) Changelog v3: - rebased on top of v5.10-rc1 - dropped upstreamed dependencies - added Rb tag to the last patch (Mika) Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Andy Shevchenko (7): resource: Simplify region_intersects() by reducing conditionals resource: Group resource_overlaps() with other inline helpers resource: Introduce resource_union() for overlapping resources resource: Introduce resource_intersection() for overlapping resources resource: Add test cases for new resource API PCI/ACPI: Replace open coded variant of resource_union() ACPI: watchdog: Replace open coded variant of resource_union() drivers/acpi/acpi_watchdog.c | 6 +- drivers/acpi/pci_root.c | 4 +- include/linux/ioport.h | 34 ++++++-- kernel/Makefile | 1 + kernel/resource.c | 10 +-- kernel/resource_kunit.c | 150 +++++++++++++++++++++++++++++++++++ lib/Kconfig.debug | 11 +++ 7 files changed, 196 insertions(+), 20 deletions(-) create mode 100644 kernel/resource_kunit.c -- 2.28.0 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v5 1/7] resource: Simplify region_intersects() by reducing conditionals 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 2/7] resource: Group resource_overlaps() with other inline helpers Andy Shevchenko ` (6 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Rafael J . Wysocki Now we have for 'other' and 'type' variables other type return 0 0 REGION_DISJOINT 0 x REGION_INTERSECTS x 0 REGION_DISJOINT x x REGION_MIXED Obviously it's easier to check 'type' for 0 first instead of currently checked 'other'. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- kernel/resource.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/kernel/resource.c b/kernel/resource.c index 3ae2f56cc79d..82df80417489 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -557,13 +557,13 @@ int region_intersects(resource_size_t start, size_t size, unsigned long flags, } read_unlock(&resource_lock); - if (other == 0) - return type ? REGION_INTERSECTS : REGION_DISJOINT; + if (type == 0) + return REGION_DISJOINT; - if (type) - return REGION_MIXED; + if (other == 0) + return REGION_INTERSECTS; - return REGION_DISJOINT; + return REGION_MIXED; } EXPORT_SYMBOL_GPL(region_intersects); -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 2/7] resource: Group resource_overlaps() with other inline helpers 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 1/7] resource: Simplify region_intersects() by reducing conditionals Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 3/7] resource: Introduce resource_union() for overlapping resources Andy Shevchenko ` (5 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Rafael J . Wysocki For better maintenance group resource_overlaps() with other inline helpers. While at it, drop extra parentheses. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- include/linux/ioport.h | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 5135d4b86cd6..df4581107536 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -229,6 +229,11 @@ static inline bool resource_contains(struct resource *r1, struct resource *r2) return r1->start <= r2->start && r1->end >= r2->end; } +/* True if any part of r1 overlaps r2 */ +static inline bool resource_overlaps(struct resource *r1, struct resource *r2) +{ + return r1->start <= r2->end && r1->end >= r2->start; +} /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0) @@ -296,12 +301,6 @@ extern int walk_iomem_res_desc(unsigned long desc, unsigned long flags, u64 start, u64 end, void *arg, int (*func)(struct resource *, void *)); -/* True if any part of r1 overlaps r2 */ -static inline bool resource_overlaps(struct resource *r1, struct resource *r2) -{ - return (r1->start <= r2->end && r1->end >= r2->start); -} - struct resource *devm_request_free_mem_region(struct device *dev, struct resource *base, unsigned long size); struct resource *request_free_mem_region(struct resource *base, -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 3/7] resource: Introduce resource_union() for overlapping resources 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 1/7] resource: Simplify region_intersects() by reducing conditionals Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 2/7] resource: Group resource_overlaps() with other inline helpers Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 4/7] resource: Introduce resource_intersection() " Andy Shevchenko ` (4 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Rafael J . Wysocki, Mika Westerberg, Kuppuswamy Sathyanarayanan, Bjorn Helgaas, linux-pci Some already present users may utilize resource_union() helper. Provide it for them and for wider use in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org --- include/linux/ioport.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index df4581107536..40320eb5bc0e 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -10,9 +10,10 @@ #define _LINUX_IOPORT_H #ifndef __ASSEMBLY__ +#include <linux/bits.h> #include <linux/compiler.h> +#include <linux/minmax.h> #include <linux/types.h> -#include <linux/bits.h> /* * Resources are tree-like, allowing * nesting etc.. @@ -235,6 +236,16 @@ static inline bool resource_overlaps(struct resource *r1, struct resource *r2) return r1->start <= r2->end && r1->end >= r2->start; } +static inline bool +resource_union(struct resource *r1, struct resource *r2, struct resource *r) +{ + if (!resource_overlaps(r1, r2)) + return false; + r->start = min(r1->start, r2->start); + r->end = max(r1->end, r2->end); + return true; +} + /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0) #define request_muxed_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), IORESOURCE_MUXED) -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 4/7] resource: Introduce resource_intersection() for overlapping resources 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko ` (2 preceding siblings ...) 2020-11-03 20:36 ` [PATCH v5 3/7] resource: Introduce resource_union() for overlapping resources Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 5/7] resource: Add test cases for new resource API Andy Shevchenko ` (3 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Rafael J . Wysocki There will be at least one user that can utilize new helper. Provide the helper for future user and for wider use. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- include/linux/ioport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 40320eb5bc0e..ece1a8db309c 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -236,6 +236,16 @@ static inline bool resource_overlaps(struct resource *r1, struct resource *r2) return r1->start <= r2->end && r1->end >= r2->start; } +static inline bool +resource_intersection(struct resource *r1, struct resource *r2, struct resource *r) +{ + if (!resource_overlaps(r1, r2)) + return false; + r->start = max(r1->start, r2->start); + r->end = min(r1->end, r2->end); + return true; +} + static inline bool resource_union(struct resource *r1, struct resource *r2, struct resource *r) { -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 5/7] resource: Add test cases for new resource API 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko ` (3 preceding siblings ...) 2020-11-03 20:36 ` [PATCH v5 4/7] resource: Introduce resource_intersection() " Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 6/7] PCI/ACPI: Replace open coded variant of resource_union() Andy Shevchenko ` (2 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel; +Cc: Andy Shevchenko Add test cases for newly added resource APIs. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- kernel/Makefile | 1 + kernel/resource_kunit.c | 150 ++++++++++++++++++++++++++++++++++++++++ lib/Kconfig.debug | 11 +++ 3 files changed, 162 insertions(+) create mode 100644 kernel/resource_kunit.c diff --git a/kernel/Makefile b/kernel/Makefile index af601b9bda0e..aac15aeb9d69 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -123,6 +123,7 @@ obj-$(CONFIG_HAS_IOMEM) += iomem.o obj-$(CONFIG_RSEQ) += rseq.o obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o +obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_kunit.o obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o CFLAGS_stackleak.o += $(DISABLE_STACKLEAK_PLUGIN) diff --git a/kernel/resource_kunit.c b/kernel/resource_kunit.c new file mode 100644 index 000000000000..9fdbca8426f1 --- /dev/null +++ b/kernel/resource_kunit.c @@ -0,0 +1,150 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Test cases for API provided by resource.c and ioport.h + */ + +#include <kunit/test.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/string.h> + +#define R0_START 0x0000 +#define R0_END 0xffff +#define R1_START 0x1234 +#define R1_END 0x2345 +#define R2_START 0x4567 +#define R2_END 0x5678 +#define R3_START 0x6789 +#define R3_END 0x789a +#define R4_START 0x2000 +#define R4_END 0x7000 + +static struct resource r0 = { .start = R0_START, .end = R0_END }; +static struct resource r1 = { .start = R1_START, .end = R1_END }; +static struct resource r2 = { .start = R2_START, .end = R2_END }; +static struct resource r3 = { .start = R3_START, .end = R3_END }; +static struct resource r4 = { .start = R4_START, .end = R4_END }; + +struct result { + struct resource *r1; + struct resource *r2; + struct resource r; + bool ret; +}; + +static struct result results_for_union[] = { + { + .r1 = &r1, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true, + }, { + .r1 = &r3, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true, + }, { + .r1 = &r4, .r2 = &r0, .r.start = R0_START, .r.end = R0_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r1, .ret = false, + }, { + .r1 = &r3, .r2 = &r1, .ret = false, + }, { + .r1 = &r4, .r2 = &r1, .r.start = R1_START, .r.end = R4_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r3, .ret = false, + }, { + .r1 = &r2, .r2 = &r4, .r.start = R4_START, .r.end = R4_END, .ret = true, + }, { + .r1 = &r3, .r2 = &r4, .r.start = R4_START, .r.end = R3_END, .ret = true, + }, +}; + +static struct result results_for_intersection[] = { + { + .r1 = &r1, .r2 = &r0, .r.start = R1_START, .r.end = R1_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r0, .r.start = R2_START, .r.end = R2_END, .ret = true, + }, { + .r1 = &r3, .r2 = &r0, .r.start = R3_START, .r.end = R3_END, .ret = true, + }, { + .r1 = &r4, .r2 = &r0, .r.start = R4_START, .r.end = R4_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r1, .ret = false, + }, { + .r1 = &r3, .r2 = &r1, .ret = false, + }, { + .r1 = &r4, .r2 = &r1, .r.start = R4_START, .r.end = R1_END, .ret = true, + }, { + .r1 = &r2, .r2 = &r3, .ret = false, + }, { + .r1 = &r2, .r2 = &r4, .r.start = R2_START, .r.end = R2_END, .ret = true, + }, { + .r1 = &r3, .r2 = &r4, .r.start = R3_START, .r.end = R4_END, .ret = true, + }, +}; + +static void resource_do_test(struct kunit *test, bool ret, struct resource *r, + bool exp_ret, struct resource *exp_r, + struct resource *r1, struct resource *r2) +{ + KUNIT_EXPECT_EQ_MSG(test, ret, exp_ret, "Resources %pR %pR", r1, r2); + KUNIT_EXPECT_EQ_MSG(test, r->start, exp_r->start, "Start elements are not equal"); + KUNIT_EXPECT_EQ_MSG(test, r->end, exp_r->end, "End elements are not equal"); +} + +static void resource_do_union_test(struct kunit *test, struct result *r) +{ + struct resource result; + bool ret; + + memset(&result, 0, sizeof(result)); + ret = resource_union(r->r1, r->r2, &result); + resource_do_test(test, ret, &result, r->ret, &r->r, r->r1, r->r2); + + memset(&result, 0, sizeof(result)); + ret = resource_union(r->r2, r->r1, &result); + resource_do_test(test, ret, &result, r->ret, &r->r, r->r2, r->r1); +} + +static void resource_test_union(struct kunit *test) +{ + struct result *r = results_for_union; + unsigned int i = 0; + + do { + resource_do_union_test(test, &r[i]); + } while (++i < ARRAY_SIZE(results_for_union)); +} + +static void resource_do_intersection_test(struct kunit *test, struct result *r) +{ + struct resource result; + bool ret; + + memset(&result, 0, sizeof(result)); + ret = resource_intersection(r->r1, r->r2, &result); + resource_do_test(test, ret, &result, r->ret, &r->r, r->r1, r->r2); + + memset(&result, 0, sizeof(result)); + ret = resource_intersection(r->r2, r->r1, &result); + resource_do_test(test, ret, &result, r->ret, &r->r, r->r2, r->r1); +} + +static void resource_test_intersection(struct kunit *test) +{ + struct result *r = results_for_intersection; + unsigned int i = 0; + + do { + resource_do_intersection_test(test, &r[i]); + } while (++i < ARRAY_SIZE(results_for_intersection)); +} + +static struct kunit_case resource_test_cases[] = { + KUNIT_CASE(resource_test_union), + KUNIT_CASE(resource_test_intersection), + {} +}; + +static struct kunit_suite resource_test_suite = { + .name = "resource", + .test_cases = resource_test_cases, +}; +kunit_test_suite(resource_test_suite); diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 8596989423bf..663e7238a56e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2232,6 +2232,17 @@ config BITFIELD_KUNIT If unsure, say N. +config RESOURCE_KUNIT_TEST + tristate "KUnit test for resource API" + depends on KUNIT + help + This builds the resource API unit test. + Tests the logic of API provided by resource.c and ioport.h. + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + config SYSCTL_KUNIT_TEST tristate "KUnit test for sysctl" if !KUNIT_ALL_TESTS depends on KUNIT -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 6/7] PCI/ACPI: Replace open coded variant of resource_union() 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko ` (4 preceding siblings ...) 2020-11-03 20:36 ` [PATCH v5 5/7] resource: Add test cases for new resource API Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 7/7] ACPI: watchdog: " Andy Shevchenko 2020-11-03 20:47 ` [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Kuppuswamy Sathyanarayanan, Bjorn Helgaas, linux-pci, Rafael J . Wysocki Since we have resource_union() helper, let's utilize it here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/acpi/pci_root.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c12b5fb3e8fb..0bf072cef6cf 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -722,9 +722,7 @@ static void acpi_pci_root_validate_resources(struct device *dev, * our resources no longer match the ACPI _CRS, but * the kernel resource tree doesn't allow overlaps. */ - if (resource_overlaps(res1, res2)) { - res2->start = min(res1->start, res2->start); - res2->end = max(res1->end, res2->end); + if (resource_union(res1, res2, res2)) { dev_info(dev, "host bridge window expanded to %pR; %pR ignored\n", res2, res1); free = true; -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v5 7/7] ACPI: watchdog: Replace open coded variant of resource_union() 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko ` (5 preceding siblings ...) 2020-11-03 20:36 ` [PATCH v5 6/7] PCI/ACPI: Replace open coded variant of resource_union() Andy Shevchenko @ 2020-11-03 20:36 ` Andy Shevchenko 2020-11-03 20:47 ` [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:36 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Andy Shevchenko, Mika Westerberg, Rafael J . Wysocki Since we have resource_union() helper, let's utilize it here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/acpi/acpi_watchdog.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c index 5c1e9ea43123..ca28183f4d13 100644 --- a/drivers/acpi/acpi_watchdog.c +++ b/drivers/acpi/acpi_watchdog.c @@ -151,11 +151,7 @@ void __init acpi_watchdog_init(void) found = false; resource_list_for_each_entry(rentry, &resource_list) { if (rentry->res->flags == res.flags && - resource_overlaps(rentry->res, &res)) { - if (res.start < rentry->res->start) - rentry->res->start = res.start; - if (res.end > rentry->res->end) - rentry->res->end = res.end; + resource_union(rentry->res, &res, rentry->res)) { found = true; break; } -- 2.28.0 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH v5 0/7] resource: introduce union(), intersection() API 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko ` (6 preceding siblings ...) 2020-11-03 20:36 ` [PATCH v5 7/7] ACPI: watchdog: " Andy Shevchenko @ 2020-11-03 20:47 ` Andy Shevchenko 7 siblings, 0 replies; 9+ messages in thread From: Andy Shevchenko @ 2020-11-03 20:47 UTC (permalink / raw) To: linux-acpi, Greg Kroah-Hartman, linux-kernel Cc: Kuppuswamy Sathyanarayanan, Bjorn Helgaas, linux-pci On Tue, Nov 03, 2020 at 10:36:48PM +0200, Andy Shevchenko wrote: > Some users may want to use resource library to manage their own resources, > besides existing users that open code union() and intersection() > implementations. > > Provide a generic API for wider use. > > Changelog v5: > - added test cases (Greg) Sorry, just realized I forgot to add collected tags. Fixed in v6. Sorry for a bit of spam. -- With Best Regards, Andy Shevchenko ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2020-11-03 21:53 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-11-03 20:36 [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 1/7] resource: Simplify region_intersects() by reducing conditionals Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 2/7] resource: Group resource_overlaps() with other inline helpers Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 3/7] resource: Introduce resource_union() for overlapping resources Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 4/7] resource: Introduce resource_intersection() " Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 5/7] resource: Add test cases for new resource API Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 6/7] PCI/ACPI: Replace open coded variant of resource_union() Andy Shevchenko 2020-11-03 20:36 ` [PATCH v5 7/7] ACPI: watchdog: " Andy Shevchenko 2020-11-03 20:47 ` [PATCH v5 0/7] resource: introduce union(), intersection() API Andy Shevchenko
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