Hi Robert, On 2026-05-04T10:57:13+0000, Schneider, Robert wrote: > Hi Alex, > > Thanks for your hints and links! And for being kind even though you have everything documented šŸ˜Š > I broke my machine so I had to reconfigure git etc., I hope that I did not forget anything. Thanks! For some reason, the patch didn't apply with git-am(1). However, it applied with git-apply(1), so I was able to handle it. > > Robert > > --------- > > Fixes .TP list for PERF_SAMPLE_BRANCH_CALL_STACK. > > Fixes: bb7e6ff0 (2015-07-23; "perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL_STACK") Heh, nobody has read that documentation in a decade! :) The commit that added the documentation was obviously wrong: $ diffman-git -U5 bb7e6ff0 --- bb7e6ff0^:man2/perf_event_open.2 +++ bb7e6ff0:man2/perf_event_open.2 @@ -773,11 +773,14 @@ DESCRIPTION PERF_SAMPLE_BRANCH_IN_TX (since Linux 3.11) Branch in transactional memory transaction. PERF_SAMPLE_BRANCH_NO_TX (since Linux 3.11) - Branch not in transactional memory transaction. + Branch not in transactional memory transaction. PERF_SAMā€ + PLE_BRANCH_CALL_STACK (since Linux 4.1) Branch is part of a hardware + generated call stack. This requires hardware support, currently + only found on Intel x86 Haswell or newer. sample_regs_user (since Linux 3.7) This bit mask defines the set of user CPU registers to dump on samples. The layout of the register mask is architectureā€specific and described in the kernel header arch/ARCH/include/uapi/asm/perf_regs.h. > Signed-off-by: Robert Schneider Thanks! I've applied the patch. Have a lovely day! Alex > --- > man/man2/perf_event_open.2 | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/man/man2/perf_event_open.2 b/man/man2/perf_event_open.2 > index df0a199e..ae588451 100644 > --- a/man/man2/perf_event_open.2 > +++ b/man/man2/perf_event_open.2 > @@ -1547,6 +1547,7 @@ .SS Arguments > .BR PERF_SAMPLE_BRANCH_NO_TX " (since Linux 3.11)" > .\" commit 135c5612c460f89657c4698fe2ea753f6f667963 > Branch not in transactional memory transaction. > +.TP > .BR PERF_SAMPLE_BRANCH_CALL_STACK " (since Linux 4.1)" > .\" commit 2c44b1936bb3b135a3fac8b3493394d42e51cf70 > Branch is part of a hardware-generated call stack. > -- > 2.43.0 > > Robert Schneider (1): > man/man2/perf_event_open.2: ffix > > man/man2/perf_event_open.2 | 1 + > 1 file changed, 1 insertion(+) > > Range-diff against v1: > 1: bc30096a ! 1: f2c247d1 [PATCH] man/man2/perf_event_open.2: ffix > @@ Metadata > Author: Robert Schneider > > ## Commit message ## > - [PATCH] man/man2/perf_event_open.2: ffix > + [PATCH v1] man/man2/perf_event_open.2: ffix > > Fixes .TP list for PERF_SAMPLE_BRANCH_CALL_STACK. > > + Fixes: bb7e6ff0 (2015-07-23; "perf_event_open.2: 4.1 PERF_SAMPLE_BRANCH_CALL_STACK") > Signed-off-by: Robert Schneider > > ## man/man2/perf_event_open.2 ## > -- > 2.43.0 > > > -----Original Message----- > From: Alejandro Colomar > Sent: Sunday, 3 May 2026 23:01 > To: Schneider, Robert > Cc: linux-man@vger.kernel.org > Subject: Re: [PATCH] man/man2/perf_event_open.2: ffix > > Hi Robert, > > On 2026-04-29T17:35:30+0000, Schneider, Robert wrote: > > Fixes .TP list for PERF_SAMPLE_BRANCH_CALL_STACK. > > > > Signed-off-by: Robert Schneider > > Would you mind adding a 'Fixes:' tag? > > See > and . > > > Have a lovely night! > Alex > > > --- > > man/man2/perf_event_open.2 | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/man/man2/perf_event_open.2 b/man/man2/perf_event_open.2 > > index df0a199e..ae588451 100644 > > --- a/man/man2/perf_event_open.2 > > +++ b/man/man2/perf_event_open.2 > > @@ -1547,6 +1547,7 @@ .SS Arguments > > .BR PERF_SAMPLE_BRANCH_NO_TX " (since Linux 3.11)" > > .\" commit 135c5612c460f89657c4698fe2ea753f6f667963 > > Branch not in transactional memory transaction. > > +.TP > > .BR PERF_SAMPLE_BRANCH_CALL_STACK " (since Linux 4.1)" > > .\" commit 2c44b1936bb3b135a3fac8b3493394d42e51cf70 > > Branch is part of a hardware-generated call stack. > > > > Range-diff against v0: > > -: -------- > 1: d597dc98 man/man2/perf_event_open.2: ffix > > -- > > 2.51.0 > > -- > --