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authorDaniel Borkmann <dborkman@redhat.com>2013-06-03 22:49:19 +0200
committerDaniel Borkmann <dborkman@redhat.com>2013-06-03 22:52:33 +0200
commitdc5f7a04f2b446b5224be356c2fc79e88a5d3e8f (patch)
tree1bde4c8eea045e789ea797117e7ab3b84aac7117 /iosched.h
parent0bc86fe938e8f6d12aca41a283491f51729d5c62 (diff)
irq: break out from xutils and save + restore
Break out IRQ functionality from xutils, simplify it, and save + restore IRQ affinity list. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Diffstat (limited to 'iosched.h')
0 files changed, 0 insertions, 0 deletions
ct'>tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/build/Build.include')