diff options
Diffstat (limited to 'debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch')
| -rw-r--r-- | debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch index 85a7315dc..5a8635a7f 100644 --- a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch +++ b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 28 May 2018 15:24:21 +0200 Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP list #2 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.3-rt1.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. @@ -18,7 +18,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/mm/page_alloc.c +++ b/mm/page_alloc.c -@@ -1192,8 +1192,8 @@ static inline void prefetch_buddy(struct +@@ -1253,8 +1253,8 @@ static inline void prefetch_buddy(struct * And clear the zone's pages_scanned counter, to hold off the "all pages are * pinned" detection logic. */ @@ -29,7 +29,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> { bool isolated_pageblocks; struct page *page, *tmp; -@@ -1208,12 +1208,27 @@ static void free_pcppages_bulk(struct zo +@@ -1269,12 +1269,27 @@ static void free_pcppages_bulk(struct zo */ list_for_each_entry_safe(page, tmp, head, lru) { int mt = get_pcppage_migratetype(page); @@ -57,7 +57,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> __free_one_page(page, page_to_pfn(page), zone, 0, mt); trace_mm_page_pcpu_drain(page, 0, mt); } -@@ -2731,7 +2746,7 @@ void drain_zone_pages(struct zone *zone, +@@ -2817,7 +2832,7 @@ void drain_zone_pages(struct zone *zone, local_irq_restore(flags); if (to_drain > 0) @@ -66,7 +66,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } #endif -@@ -2761,7 +2776,7 @@ static void drain_pages_zone(unsigned in +@@ -2847,7 +2862,7 @@ static void drain_pages_zone(unsigned in local_irq_restore(flags); if (count) @@ -75,7 +75,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } /* -@@ -2960,7 +2975,8 @@ static bool free_unref_page_prepare(stru +@@ -3046,7 +3061,8 @@ static bool free_unref_page_prepare(stru return true; } @@ -85,7 +85,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> { struct zone *zone = page_zone(page); struct per_cpu_pages *pcp; -@@ -2989,10 +3005,8 @@ static void free_unref_page_commit(struc +@@ -3075,10 +3091,8 @@ static void free_unref_page_commit(struc pcp->count++; if (pcp->count >= pcp->high) { unsigned long batch = READ_ONCE(pcp->batch); @@ -97,7 +97,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } } -@@ -3003,13 +3017,17 @@ void free_unref_page(struct page *page) +@@ -3089,13 +3103,17 @@ void free_unref_page(struct page *page) { unsigned long flags; unsigned long pfn = page_to_pfn(page); @@ -116,7 +116,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } /* -@@ -3020,6 +3038,11 @@ void free_unref_page_list(struct list_he +@@ -3106,6 +3124,11 @@ void free_unref_page_list(struct list_he struct page *page, *next; unsigned long flags, pfn; int batch_count = 0; @@ -128,7 +128,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* Prepare pages for freeing */ list_for_each_entry_safe(page, next, list, lru) { -@@ -3032,10 +3055,12 @@ void free_unref_page_list(struct list_he +@@ -3118,10 +3141,12 @@ void free_unref_page_list(struct list_he local_irq_save(flags); list_for_each_entry_safe(page, next, list, lru) { unsigned long pfn = page_private(page); @@ -142,7 +142,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * Guard against excessive IRQ disabled times when we get -@@ -3048,6 +3073,21 @@ void free_unref_page_list(struct list_he +@@ -3134,6 +3159,21 @@ void free_unref_page_list(struct list_he } } local_irq_restore(flags); |