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authorRobert Jarzmik <robert.jarzmik@free.fr>2013-04-30 00:06:10 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 00:54:28 +0200
commitfe0bfaaff84429a35e4447d4ccd646aecf5999fb (patch)
treeed27f6c218ab9256d5bf30f6a4a28285c8f2c992 /lib/crc-itu-t.c
parentHWPOISON: check dirty flag to match against clean page (diff)
downloadlinux-fe0bfaaff84429a35e4447d4ccd646aecf5999fb.tar.xz
linux-fe0bfaaff84429a35e4447d4ccd646aecf5999fb.zip
mm: trace filemap add and del
Use the events API to trace filemap loading and unloading of file pieces into the page cache. This patch aims at tracing the eviction reload cycle of executable and shared libraries pages in a memory constrained environment. The typical usage is to spot a specific device and inode (for example /lib/libc.so) to see the eviction cycles, and find out if frequently used code is rather spread across many pages (bad) or coallesced (good). Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Dave Chinner <david@fromorbit.com> Cc: Hugh Dickins <hughd@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/crc-itu-t.c')
0 files changed, 0 insertions, 0 deletions