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x86/resctrl: Remove unused struct mbm_state::chunks_bw 

Nothing reads struct mbm_states's chunks_bw value, its a copy of
chunks. Remove it.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/20200708163929.2783-2-james.morse@arm.com
zero-sugar-mainline-defconfig
James Morse 2020-07-08 16:39:20 +00:00 committed by Borislav Petkov
parent 9123e3a74e
commit abe8f12b44
2 changed files with 1 additions and 4 deletions
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2
arch/x86/kernel/cpu/resctrl/internal.h
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@ -283,7 +283,6 @@ struct rftype {
* struct mbm_state - status for each MBM counter in each domain
* @chunks: Total data moved (multiply by rdt_group.mon_scale to get bytes)
* @prev_msr Value of IA32_QM_CTR for this RMID last time we read it
* @chunks_bw Total local data moved. Used for bandwidth calculation
* @prev_bw_msr:Value of previous IA32_QM_CTR for bandwidth counting
* @prev_bw The most recent bandwidth in MBps
* @delta_bw Difference between the current and previous bandwidth
@ -292,7 +291,6 @@ struct rftype {
struct mbm_state {
u64 chunks;
u64 prev_msr;
u64 chunks_bw;
u64 prev_bw_msr;
u32 prev_bw;
u32 delta_bw;

3
arch/x86/kernel/cpu/resctrl/monitor.c
View File

@ -279,8 +279,7 @@ static void mbm_bw_count(u32 rmid, struct rmid_read *rr)
return;
chunks = mbm_overflow_count(m->prev_bw_msr, tval, rr->r->mbm_width);
m->chunks_bw += chunks;
m->chunks = m->chunks_bw;
m->chunks += chunks;
cur_bw = (chunks * r->mon_scale) >> 20;
if (m->delta_comp)