diff options
Diffstat (limited to 'poky/meta/recipes-kernel/lttng/lttng-modules/0001-fix-mm-page_alloc-fix-tracepoint-mm_page_alloc_zone_.patch')
| -rw-r--r-- | poky/meta/recipes-kernel/lttng/lttng-modules/0001-fix-mm-page_alloc-fix-tracepoint-mm_page_alloc_zone_.patch | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/poky/meta/recipes-kernel/lttng/lttng-modules/0001-fix-mm-page_alloc-fix-tracepoint-mm_page_alloc_zone_.patch b/poky/meta/recipes-kernel/lttng/lttng-modules/0001-fix-mm-page_alloc-fix-tracepoint-mm_page_alloc_zone_.patch new file mode 100644 index 0000000000..62376806c8 --- /dev/null +++ b/poky/meta/recipes-kernel/lttng/lttng-modules/0001-fix-mm-page_alloc-fix-tracepoint-mm_page_alloc_zone_.patch @@ -0,0 +1,106 @@ +From 8d5da4d2a3d7d9173208f4e8dc7a709f0bfc9820 Mon Sep 17 00:00:00 2001 +From: Michael Jeanson <mjeanson@efficios.com> +Date: Wed, 8 Jun 2022 12:56:36 -0400 +Subject: [PATCH 1/3] fix: mm/page_alloc: fix tracepoint + mm_page_alloc_zone_locked() (v5.19) + +See upstream commit : + + commit 10e0f7530205799e7e971aba699a7cb3a47456de + Author: Wonhyuk Yang <vvghjk1234@gmail.com> + Date: Thu May 19 14:08:54 2022 -0700 + + mm/page_alloc: fix tracepoint mm_page_alloc_zone_locked() + + Currently, trace point mm_page_alloc_zone_locked() doesn't show correct + information. + + First, when alloc_flag has ALLOC_HARDER/ALLOC_CMA, page can be allocated + from MIGRATE_HIGHATOMIC/MIGRATE_CMA. Nevertheless, tracepoint use + requested migration type not MIGRATE_HIGHATOMIC and MIGRATE_CMA. + + Second, after commit 44042b4498728 ("mm/page_alloc: allow high-order pages + to be stored on the per-cpu lists") percpu-list can store high order + pages. But trace point determine whether it is a refiil of percpu-list by + comparing requested order and 0. + + To handle these problems, make mm_page_alloc_zone_locked() only be called + by __rmqueue_smallest with correct migration type. With a new argument + called percpu_refill, it can show roughly whether it is a refill of + percpu-list. + +Upstream-Status: Backport + +Change-Id: I2e4a57393757f12b9c5a4566c4d1102ee2474a09 +Signed-off-by: Michael Jeanson <mjeanson@efficios.com> +Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> +--- + include/instrumentation/events/kmem.h | 45 +++++++++++++++++++++++++++ + 1 file changed, 45 insertions(+) + +diff --git a/include/instrumentation/events/kmem.h b/include/instrumentation/events/kmem.h +index 29c0fb7f..8c19e962 100644 +--- a/include/instrumentation/events/kmem.h ++++ b/include/instrumentation/events/kmem.h +@@ -218,6 +218,50 @@ LTTNG_TRACEPOINT_EVENT_MAP(mm_page_alloc, kmem_mm_page_alloc, + ) + ) + ++#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,19,0)) ++LTTNG_TRACEPOINT_EVENT_CLASS(kmem_mm_page, ++ ++ TP_PROTO(struct page *page, unsigned int order, int migratetype, ++ int percpu_refill), ++ ++ TP_ARGS(page, order, migratetype, percpu_refill), ++ ++ TP_FIELDS( ++ ctf_integer_hex(struct page *, page, page) ++ ctf_integer(unsigned long, pfn, ++ page ? page_to_pfn(page) : -1UL) ++ ctf_integer(unsigned int, order, order) ++ ctf_integer(int, migratetype, migratetype) ++ ctf_integer(int, percpu_refill, percpu_refill) ++ ) ++) ++ ++LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(kmem_mm_page, mm_page_alloc_zone_locked, ++ ++ kmem_mm_page_alloc_zone_locked, ++ ++ TP_PROTO(struct page *page, unsigned int order, int migratetype, ++ int percpu_refill), ++ ++ TP_ARGS(page, order, migratetype, percpu_refill) ++) ++ ++LTTNG_TRACEPOINT_EVENT_MAP(mm_page_pcpu_drain, ++ ++ kmem_mm_page_pcpu_drain, ++ ++ TP_PROTO(struct page *page, unsigned int order, int migratetype), ++ ++ TP_ARGS(page, order, migratetype), ++ ++ TP_FIELDS( ++ ctf_integer(unsigned long, pfn, ++ page ? page_to_pfn(page) : -1UL) ++ ctf_integer(unsigned int, order, order) ++ ctf_integer(int, migratetype, migratetype) ++ ) ++) ++#else + LTTNG_TRACEPOINT_EVENT_CLASS(kmem_mm_page, + + TP_PROTO(struct page *page, unsigned int order, int migratetype), +@@ -250,6 +294,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(kmem_mm_page, mm_page_pcpu_drain, + + TP_ARGS(page, order, migratetype) + ) ++#endif + + #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,19,2) \ + || LTTNG_KERNEL_RANGE(3,14,36, 3,15,0) \ +-- +2.19.1 + |