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authorTobias Klauser <tklauser@distanz.ch>2015-10-26 13:49:40 +0100
committerTobias Klauser <tklauser@distanz.ch>2015-10-26 13:49:40 +0100
commitd91abbd912399a1d29cc77e4be7b7d6f94014180 (patch)
tree9bcf27a0d33af56c71f0ee8790fd0f30dce55016 /cookie.c
parent8cddf0164f310018484b6c518f8ded87724222d7 (diff)
flowtop: Fix short form unit of kilobytes from KB to kB
The SI prefix for 1000 is 'k', not 'K' (which is used for 1024 bytes by some). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'cookie.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-17 05:11:48 +0000
eout, its last_residency will be target_residency of the next deeper state. Commit e93e59ce5b85 "cpuidle: Replace ktime_get() with local_clock()" changed the math around last_residency calculation. Specifically, while converting last_residency value from nano- to microseconds, it carries out right shift by 10. Because of that, in snooze timeout exit scenarios last_residency calculated is roughly 2.3% less than target_residency of the next available state. This pattern is picked up by get_typical_interval() in the menu governor and therefore expected_interval in menu_select() is frequently less than the target_residency of any state other than snooze. Due to this we are entering snooze at a higher rate, thereby affecting the single thread performance. Fix this by using more precise division via ktime_us_delta(). Fixes: e93e59ce5b85 "cpuidle: Replace ktime_get() with local_clock()" Reported-by: Anton Blanchard <anton@samba.org> Bisected-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation')