xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/cell: Use system_wq in cpufreq_spudemand

Browse Source 
With cmwq, there's no reason to use a separate workqueue in
cpufreq_spudemand.  Use system_wq instead.  The work items are already
sync canceled on stop, so it's already guaranteed that no work is
running when spu_gov_exit() is entered.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Dave Jones <davej@redhat.com>
Cc: cpufreq@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Tejun Heo
2011-01-03 03:49:25 +00:00
committed by Benjamin Herrenschmidt
parent f32be0c540
commit b18ae08dea
2 changed files with 23 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
arch/powerpc/kernel/time.c
View File

@@ -265,11 +265,26 @@ void accumulate_stolen_time(void)
{
u64 sst, ust;
sst = scan_dispatch_log(get_paca()->starttime_user);
ust = scan_dispatch_log(get_paca()->starttime);
get_paca()->system_time -= sst;
get_paca()->user_time -= ust;
get_paca()->stolen_time += ust + sst;
u8 save_soft_enabled = local_paca->soft_enabled;
u8 save_hard_enabled = local_paca->hard_enabled;
/* We are called early in the exception entry, before
* soft/hard_enabled are sync'ed to the expected state
* for the exception. We are hard disabled but the PACA
* needs to reflect that so various debug stuff doesn't
* complain
*/
local_paca->soft_enabled = 0;
local_paca->hard_enabled = 0;
sst = scan_dispatch_log(local_paca->starttime_user);
ust = scan_dispatch_log(local_paca->starttime);
local_paca->system_time -= sst;
local_paca->user_time -= ust;
local_paca->stolen_time += ust + sst;
local_paca->soft_enabled = save_soft_enabled;
local_paca->hard_enabled = save_hard_enabled;
}
static inline u64 calculate_stolen_time(u64 stop_tb)