Merge branch 'svn-trunk'

This commit is contained in:
Bart Van Assche
2020-06-06 17:28:19 -07:00
3 changed files with 0 additions and 42 deletions

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@@ -12,8 +12,6 @@ ccflags-y += -I$(src)/../scst/include
ccflags-y += $(call cc-option,-Wextra) -Wno-unused-parameter\
-Wno-missing-field-initializers
#ccflags-y += -DCONFIG_SCST_LOCAL_DIRECT_PROCESSING
obj-m := scst_local.o
else
######### BEGIN OUT-OF-TREE RULES #########

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@@ -228,24 +228,6 @@ user space:
For other connected initiators steps 3-6 should be repeated.
Compilation options
===================
There are the following compilation options, that could be commented
in/out in Makefile:
- CONFIG_SCST_LOCAL_DIRECT_PROCESSING - by default, when this option
is not defined, scst_local reschedules all commands for processing in
one of the SCST threads. If this option is defined, scst_local tries
to not do it, if possible (sometimes queuecommand() called under
various locks held), but instead process them in the submitter's
context. This is to increase performance, but as on 2.6.37 and below
Linux block layer doesn't work with such kind of reentrance, hence
this option disabled by default. Note! At the moment in
scst_estimate_context*() returning DIRECT contexts disabled, so this
option doesn't have any real effect.
Change log
==========

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@@ -1045,29 +1045,7 @@ static int scst_local_queuecommand_lck(struct scsi_cmnd *scmd,
scst_cmd_set_tgt_priv(scst_cmd, scmd);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)
#ifdef CONFIG_SCST_LOCAL_DIRECT_PROCESSING
/*
* NOTE! At the moment in scst_estimate_context*() returning
* DIRECT contexts disabled, so this option doesn't have any
* real effect.
*/
#ifdef CONFIG_SMP
if (spin_is_locked(scmd->device->host->host_lock))
scst_cmd_init_done(scst_cmd, SCST_CONTEXT_THREAD);
else
#endif
scst_cmd_init_done(scst_cmd, scst_estimate_context());
#else
scst_cmd_init_done(scst_cmd, SCST_CONTEXT_THREAD);
#endif
#else
/*
* We called with IRQs disabled, so have no choice,
* except to pass to the thread context.
*/
scst_cmd_init_done(scst_cmd, SCST_CONTEXT_THREAD);
#endif
TRACE_EXIT();
return 0;