iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch
History
Peter Zijlstra 7c9903c9bf x86/perf, static_call: Optimize x86_pmu methods 
Replace many of the indirect calls with static_call().

The average PMI time, as measured by perf_sample_event_took()*:

  PRE:    3283.03 [ns]
  POST:   3145.12 [ns]

Which is a ~138 [ns] win per PMI, or a ~4.2% decrease.

[*] on an IVB-EP, using: 'perf record -a -e cycles -- make O=defconfig-build/ -j80'

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20200818135805.338001015@infradead.org
2020-09-01 09:58:06 +02:00
..
alpha
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
arc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
arm
A set of fixes for lockdep, tracing and RCU:
2020-08-30 11:43:50 -07:00
arm64
A set of fixes for interrupt chip drivers:
2020-08-30 11:56:54 -07:00
c6x
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
csky
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
h8300
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
hexagon
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
ia64
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
m68k
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
microblaze
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
mips
A set of fixes for lockdep, tracing and RCU:
2020-08-30 11:43:50 -07:00
nds32
A set of fixes for lockdep, tracing and RCU:
2020-08-30 11:43:50 -07:00
nios2
mm/nios2: use general page fault accounting
2020-08-12 10:58:03 -07:00
openrisc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
parisc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
powerpc
A set of fixes for lockdep, tracing and RCU:
2020-08-30 11:43:50 -07:00
riscv
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
s390
A set of fixes for lockdep, tracing and RCU:
2020-08-30 11:43:50 -07:00
sh
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
sparc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
um
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
x86
x86/perf, static_call: Optimize x86_pmu methods
2020-09-01 09:58:06 +02:00
xtensa
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
.gitignore
…
Kconfig
static_call: Add simple self-test for static calls
2020-09-01 09:58:05 +02:00