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| author | Idan Horowitz <idan.horowitz@gmail.com> | 2022-01-14 02:43:57 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-02-09 08:55:02 +1100 |
| commit | 25e82fb769eddb83e0b68487b8b08d9426704d54 (patch) | |
| tree | bf541bd2cd78e26e5350a2473d89a152e1b8b7d7 /job.c | |
| parent | cfc2a2d69d59f02b32df3098ce17e10ab86d43c6 (diff) | |
| download | qemu-25e82fb769eddb83e0b68487b8b08d9426704d54.zip qemu-25e82fb769eddb83e0b68487b8b08d9426704d54.tar.gz qemu-25e82fb769eddb83e0b68487b8b08d9426704d54.tar.bz2 | |
softmmu/cpus: Check if the cpu work list is empty atomically
Instead of taking the lock of the cpu work list in order to check if it's
empty, we can just read the head pointer atomically. This decreases
cpu_work_list_empty's share from 5% to 1.3% in a profile of icount-enabled
aarch64-softmmu.
Signed-off-by: Idan Horowitz <idan.horowitz@gmail.com>
Message-Id: <20220114004358.299534-1-idan.horowitz@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'job.c')
0 files changed, 0 insertions, 0 deletions