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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-12 04:23:52 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-12 04:23:52 +0400
commitb7e70ca9c7d7f049bba8047d7ab49966fd5e9e9d (patch)
treef5af8945a6b2f7ee2150420450d980cffd8173d4 /drivers/scsi/scsi.c
parent7f8730781830cd38438b10d44d17ccb8eafa9265 (diff)
parent3c31b52f96f7b559d950b16113c0f68c72a1985e (diff)
downloadlinux-b7e70ca9c7d7f049bba8047d7ab49966fd5e9e9d.tar.xz
Merge branch 'async-scsi-resume' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci
Pull async SCSI resume support from Dan Williams: "Allow disks and other devices to resume in parallel. This provides a tangible speed up for a non-esoteric use case (laptop resume): https://01.org/suspendresume/blogs/tebrandt/2013/hard-disk-resume-optimization-simpler-approach" * 'async-scsi-resume' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci: scsi: async sd resume
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r--drivers/scsi/scsi.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index c4d632c27a3e..88d46fe6bf98 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -91,6 +91,15 @@ EXPORT_SYMBOL(scsi_logging_level);
ASYNC_DOMAIN(scsi_sd_probe_domain);
EXPORT_SYMBOL(scsi_sd_probe_domain);
+/*
+ * Separate domain (from scsi_sd_probe_domain) to maximize the benefit of
+ * asynchronous system resume operations. It is marked 'exclusive' to avoid
+ * being included in the async_synchronize_full() that is invoked by
+ * dpm_resume()
+ */
+ASYNC_DOMAIN_EXCLUSIVE(scsi_sd_pm_domain);
+EXPORT_SYMBOL(scsi_sd_pm_domain);
+
/* NB: These are exposed through /proc/scsi/scsi and form part of the ABI.
* You may not alter any existing entry (although adding new ones is
* encouraged once assigned by ANSI/INCITS T10