linux

iv/linux

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Johannes Berg bfb80d8bc9 um: add shared memory optimisation for time-travel=ext

With external time travel, a LOT of message can end up
being exchanged on the socket, taking a significant
amount of time just to do that.

Add a new shared memory optimisation to that, where a
number of changes are made:
 - the controller sends a client ID and a shared memory FD
   (and a logging FD we don't use) in the ACK message to
   the initial START
 - the shared memory holds the current time and the
   free_until value, so that there's no need to exchange
   messages for that
 - if the client that's running has shared memory support,
   any client (the running one included) can request the
   next time it wants to run inside the shared memory,
   rather than sending a message, by also updating the
   free_until value
 - when shared memory is enabled, RUN/WAIT messages no
   longer have an ACK, further cutting down on messages

Together, this can reduce the number of messages very
significantly, and reduce overall test/simulation run time.

Co-developed-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://patch.msgid.link/20240702192118.6ad0a083f574.Ie41206c8ce4507fe26b991937f47e86c24ca7a31@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2024-07-03 12:24:54 +02:00

acpi

ACPI: EC: Evaluate orphan _REG under EC device

2024-06-13 11:28:54 +02:00

asm-generic

syscalls: mmap(): use unsigned offset type consistently

2024-06-25 15:57:38 +02:00

clocksource

…

crypto

This push fixes a bug in the new ecc P521 code as well as a buggy

2024-05-20 08:47:54 -07:00