summaryrefslogtreecommitdiff
path: root/patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch
diff options
context:
space:
mode:
authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2020-02-04 17:07:39 +0100
committerSebastian Andrzej Siewior <bigeasy@linutronix.de>2020-02-04 17:07:39 +0100
commit9cf4d2227a896a0aaf753dd8875167e0ab391fbc (patch)
tree9dc0196a476be638e738057ea3cd278e9e02e545 /patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch
parent0d9814c65b67abf558330ed09846d06b797d1840 (diff)
downloadlinux-rt-9cf4d2227a896a0aaf753dd8875167e0ab391fbc.tar.gz
[ANNOUNCE] v5.4.17-rt9v5.4.17-rt9-patches
Dear RT folks! I'm pleased to announce the v5.4.17-rt9 patch set. Changes since v5.4.17-rt8: - A rework of percpu-rwsem locking. The fs core was using a percpu-rwsem and returned with acquired lock to userland during `fsfreeze' which led warnings. On !RT the warnings were disabled but the same lockdep trick did not work on RT. Reported by Juri Lelli, patch(es) by Peter Zijlstra. - Include a header file the `current' macro to not break an allmod build on ARM. - A tweak to migrate_enable() to not having to wait until stop_one_cpu_nowait() finishes in case CPU-mask changed during migrate_disable() and the CPU has to be changed. Patch by Scott Wood. - Drop a lock earlier in mm/memcontrol. Not a bug but there is no need for the additional locked section. Patch by Matt Fleming. Known issues - None The delta patch against v5.4.17-rt8 is appended below and can be found here: https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.4/incr/patch-5.4.17-rt8-rt9.patch.xz You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v5.4.17-rt9 The RT patch against v5.4.17 can be found here: https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patch-5.4.17-rt9.patch.xz The split quilt queue is available at: https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.17-rt9.tar.xz Sebastian Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch')
-rw-r--r--patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch20
1 files changed, 10 insertions, 10 deletions
diff --git a/patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch
index 7da1092ba766..cb3958983d96 100644
--- a/patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch
+++ b/patches/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch
@@ -17,7 +17,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
-@@ -1253,8 +1253,8 @@ static inline void prefetch_buddy(struct
+@@ -1246,8 +1246,8 @@ static inline void prefetch_buddy(struct
* And clear the zone's pages_scanned counter, to hold off the "all pages are
* pinned" detection logic.
*/
@@ -28,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
{
bool isolated_pageblocks;
struct page *page, *tmp;
-@@ -1269,12 +1269,27 @@ static void free_pcppages_bulk(struct zo
+@@ -1262,12 +1262,27 @@ static void free_pcppages_bulk(struct zo
*/
list_for_each_entry_safe(page, tmp, head, lru) {
int mt = get_pcppage_migratetype(page);
@@ -56,7 +56,7 @@ 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);
}
-@@ -2817,7 +2832,7 @@ void drain_zone_pages(struct zone *zone,
+@@ -2806,7 +2821,7 @@ void drain_zone_pages(struct zone *zone,
local_irq_restore(flags);
if (to_drain > 0)
@@ -65,7 +65,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
#endif
-@@ -2847,7 +2862,7 @@ static void drain_pages_zone(unsigned in
+@@ -2836,7 +2851,7 @@ static void drain_pages_zone(unsigned in
local_irq_restore(flags);
if (count)
@@ -74,7 +74,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
/*
-@@ -3046,7 +3061,8 @@ static bool free_unref_page_prepare(stru
+@@ -3035,7 +3050,8 @@ static bool free_unref_page_prepare(stru
return true;
}
@@ -84,7 +84,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
{
struct zone *zone = page_zone(page);
struct per_cpu_pages *pcp;
-@@ -3075,10 +3091,8 @@ static void free_unref_page_commit(struc
+@@ -3064,10 +3080,8 @@ static void free_unref_page_commit(struc
pcp->count++;
if (pcp->count >= pcp->high) {
unsigned long batch = READ_ONCE(pcp->batch);
@@ -96,7 +96,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
}
-@@ -3089,13 +3103,17 @@ void free_unref_page(struct page *page)
+@@ -3078,13 +3092,17 @@ void free_unref_page(struct page *page)
{
unsigned long flags;
unsigned long pfn = page_to_pfn(page);
@@ -115,7 +115,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
}
/*
-@@ -3106,6 +3124,11 @@ void free_unref_page_list(struct list_he
+@@ -3095,6 +3113,11 @@ void free_unref_page_list(struct list_he
struct page *page, *next;
unsigned long flags, pfn;
int batch_count = 0;
@@ -127,7 +127,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/* Prepare pages for freeing */
list_for_each_entry_safe(page, next, list, lru) {
-@@ -3118,10 +3141,12 @@ void free_unref_page_list(struct list_he
+@@ -3107,10 +3130,12 @@ 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);
@@ -141,7 +141,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
/*
* Guard against excessive IRQ disabled times when we get
-@@ -3134,6 +3159,21 @@ void free_unref_page_list(struct list_he
+@@ -3123,6 +3148,21 @@ void free_unref_page_list(struct list_he
}
}
local_irq_restore(flags);