Re: [PATCH v9] pgo: add clang's Profile Guided Optimization infrastructure

2021-04-07 Thread Bill Wendling
On Wed, Apr 7, 2021 at 2:47 PM Nathan Chancellor wrote: > > Hi Bill, > > On Wed, Apr 07, 2021 at 02:17:04PM -0700, Bill Wendling wrote: > > From: Sami Tolvanen > > > > Enable the use of clang's Profile-Guided Optimization[1]. To generate a > > profile, the kernel is instrumented with PGO counters

Re: [PATCH v9] pgo: add clang's Profile Guided Optimization infrastructure

2021-04-07 Thread Nathan Chancellor
Hi Bill, On Wed, Apr 07, 2021 at 02:17:04PM -0700, Bill Wendling wrote: > From: Sami Tolvanen > > Enable the use of clang's Profile-Guided Optimization[1]. To generate a > profile, the kernel is instrumented with PGO counters, a representative > workload is run, and the raw profile data is colle

Re: [PATCH v9] pgo: add clang's Profile Guided Optimization infrastructure

2021-04-07 Thread Fāng-ruì Sòng
On Wed, Apr 7, 2021 at 2:22 PM Kees Cook wrote: > > On Wed, Apr 07, 2021 at 02:17:04PM -0700, 'Bill Wendling' via Clang Built > Linux wrote: > > From: Sami Tolvanen > > > > Enable the use of clang's Profile-Guided Optimization[1]. To generate a > > profile, the kernel is instrumented with PGO co

Re: [PATCH v9] pgo: add clang's Profile Guided Optimization infrastructure

2021-04-07 Thread Kees Cook
On Wed, Apr 07, 2021 at 02:17:04PM -0700, 'Bill Wendling' via Clang Built Linux wrote: > From: Sami Tolvanen > > Enable the use of clang's Profile-Guided Optimization[1]. To generate a > profile, the kernel is instrumented with PGO counters, a representative > workload is run, and the raw profil

[PATCH v9] pgo: add clang's Profile Guided Optimization infrastructure

2021-04-07 Thread Bill Wendling
From: Sami Tolvanen Enable the use of clang's Profile-Guided Optimization[1]. To generate a profile, the kernel is instrumented with PGO counters, a representative workload is run, and the raw profile data is collected from /sys/kernel/debug/pgo/profraw. The raw profile data must be processed by