OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully" 

This reverts commit 3500ed90b2.

The reverted patch caused a significant performance regression when
booting with the root file system on eMMC.

Before the patch:

[    1.625623] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

After the patch:

[    1.935851] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

That was an addition of 310 ms which is a 19% performance degradation.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter 2013-04-04 16:41:05 +03:00 committed by Chris Ball
parent bdbc5d0c60
commit f9a94e0a3f
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/mmc/core/core.c
View File

@ -2418,7 +2418,6 @@ void mmc_start_host(struct mmc_host *host)
host->rescan_disable = 0;
mmc_power_up(host);
mmc_detect_change(host, 0);
mmc_flush_scheduled_work();
}
void mmc_stop_host(struct mmc_host *host)