diff options
Diffstat (limited to 'meta/recipes-kernel/lttng/lttng-modules/0008-fix-writeback-Fix-sync-livelock-due-to-b_dirty_time-.patch')
| -rw-r--r-- | meta/recipes-kernel/lttng/lttng-modules/0008-fix-writeback-Fix-sync-livelock-due-to-b_dirty_time-.patch | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/meta/recipes-kernel/lttng/lttng-modules/0008-fix-writeback-Fix-sync-livelock-due-to-b_dirty_time-.patch b/meta/recipes-kernel/lttng/lttng-modules/0008-fix-writeback-Fix-sync-livelock-due-to-b_dirty_time-.patch deleted file mode 100644 index 7a0d9a38b8..0000000000 --- a/meta/recipes-kernel/lttng/lttng-modules/0008-fix-writeback-Fix-sync-livelock-due-to-b_dirty_time-.patch +++ /dev/null @@ -1,117 +0,0 @@ -From 87b2affc3eb06f3fb2d0923f18af37713eb6814b Mon Sep 17 00:00:00 2001 -From: Michael Jeanson <mjeanson@efficios.com> -Date: Mon, 31 Aug 2020 14:16:01 -0400 -Subject: [PATCH 08/10] fix: writeback: Fix sync livelock due to b_dirty_time - processing (v5.9) - -See upstream commit: - - commit f9cae926f35e8230330f28c7b743ad088611a8de - Author: Jan Kara <jack@suse.cz> - Date: Fri May 29 16:08:58 2020 +0200 - - writeback: Fix sync livelock due to b_dirty_time processing - - When we are processing writeback for sync(2), move_expired_inodes() - didn't set any inode expiry value (older_than_this). This can result in - writeback never completing if there's steady stream of inodes added to - b_dirty_time list as writeback rechecks dirty lists after each writeback - round whether there's more work to be done. Fix the problem by using - sync(2) start time is inode expiry value when processing b_dirty_time - list similarly as for ordinarily dirtied inodes. This requires some - refactoring of older_than_this handling which simplifies the code - noticeably as a bonus. - -Upstream-Status: Backport - -Change-Id: I8b894b13ccc14d9b8983ee4c2810a927c319560b -Signed-off-by: Michael Jeanson <mjeanson@efficios.com> -Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> ---- - .../events/lttng-module/writeback.h | 39 ++++++++++++------- - 1 file changed, 26 insertions(+), 13 deletions(-) - -diff --git a/instrumentation/events/lttng-module/writeback.h b/instrumentation/events/lttng-module/writeback.h -index ece67ad..e9018dd 100644 ---- a/instrumentation/events/lttng-module/writeback.h -+++ b/instrumentation/events/lttng-module/writeback.h -@@ -384,34 +384,48 @@ LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_balance_dirty_wait, writeback_wbc_balanc - #endif - LTTNG_TRACEPOINT_EVENT_WBC_INSTANCE(wbc_writepage, writeback_wbc_writepage) - --#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) -+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0)) -+LTTNG_TRACEPOINT_EVENT(writeback_queue_io, -+ TP_PROTO(struct bdi_writeback *wb, -+ struct wb_writeback_work *work, -+ unsigned long dirtied_before, -+ int moved), -+ TP_ARGS(wb, work, dirtied_before, moved), -+ TP_FIELDS( -+ ctf_array_text(char, name, dev_name(wb->bdi->dev), 32) -+ ctf_integer(unsigned long, older, dirtied_before) -+ ctf_integer(int, moved, moved) -+ ) -+) -+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) - LTTNG_TRACEPOINT_EVENT(writeback_queue_io, - TP_PROTO(struct bdi_writeback *wb, --#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) - struct wb_writeback_work *work, --#else -- unsigned long *older_than_this, --#endif - int moved), --#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) - TP_ARGS(wb, work, moved), --#else -+ TP_FIELDS( -+ ctf_array_text(char, name, dev_name(wb->bdi->dev), 32) -+ ctf_integer(int, moved, moved) -+ ) -+) -+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) -+LTTNG_TRACEPOINT_EVENT(writeback_queue_io, -+ TP_PROTO(struct bdi_writeback *wb, -+ unsigned long *older_than_this, -+ int moved), - TP_ARGS(wb, older_than_this, moved), --#endif - TP_FIELDS( - ctf_array_text(char, name, dev_name(wb->bdi->dev), 32) --#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) --#else - ctf_integer(unsigned long, older, - older_than_this ? *older_than_this : 0) - ctf_integer(long, age, - older_than_this ? - (jiffies - *older_than_this) * 1000 / HZ - : -1) --#endif - ctf_integer(int, moved, moved) - ) - ) -+#endif - - #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0)) - LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state, -@@ -460,7 +474,7 @@ LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state, - ctf_integer(unsigned long, dirty_limit, global_dirty_limit) - ) - ) --#else -+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) - LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state, - - writeback_global_dirty_state, -@@ -485,7 +499,6 @@ LTTNG_TRACEPOINT_EVENT_MAP(global_dirty_state, - ) - ) - #endif --#endif - - #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) - --- -2.19.1 - |