diff options
| author | Rik van Riel <riel@redhat.com> | 2014-09-12 09:12:14 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-09-19 12:35:16 +0200 |
| commit | ef8ac06359ddf95431cf6bb04ad2b36fff562328 (patch) | |
| tree | a7987f9ce983b4e12e26c92c140ef88a4cd7c838 /kernel | |
| parent | 2ed903c5485bad0eafdd3d59ff993598736e4f31 (diff) | |
| download | linux-ef8ac06359ddf95431cf6bb04ad2b36fff562328.tar.bz2 | |
seqlock: Add irqsave variant of read_seqbegin_or_lock()
There are cases where read_seqbegin_or_lock() needs to block irqs,
because the seqlock in question nests inside a lock that is also
be taken from irq context.
Add read_seqbegin_or_lock_irqsave() and done_seqretry_irqrestore(), which
are almost identical to read_seqbegin_or_lock() and done_seqretry().
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: prarit@redhat.com
Cc: oleg@redhat.com
Cc: sgruszka@redhat.com
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Link: http://lkml.kernel.org/r/1410527535-9814-2-git-send-email-riel@redhat.com
[ Improved the readability of the code a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions