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scripts/gdb: update documentation for lx_per_cpu

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Commit db08c53fdd ("scripts/gdb: fix parameter handling in
$lx_per_cpu") changed the parameter handling of lx_per_cpu to use GdbValue
instead of parsing the variable name.  Update the documentation to reflect
the new lx_per_cpu usage.  Update the hrtimer_bases example to use rb_tree
instead of the timerqueue_head.next pointer removed in commit
511885d706 ("lib/timerqueue: Rely on rbtree semantics for next
timer").

Link: https://lkml.kernel.org/r/20250503123234.2407184-3-illia@yshyn.com
Signed-off-by: Illia Ostapyshyn <illia@yshyn.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Dongliang Mu <dzm91@hust.edu.cn>
Cc: Florian Rommel <mail@florommel.de>
Cc: Hu Haowen <2023002089@link.tyut.edu.cn>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Yanteng Si <si.yanteng@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Illia Ostapyshyn
2025-05-03 14:32:32 +02:00
committed by Andrew Morton
parent 6be7045c77
commit 09e1d93a42
4 changed files with 47 additions and 59 deletions
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4
scripts/gdb/linux/cpus.py
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@@ -141,7 +141,7 @@ LxCpus()
class PerCpu(gdb.Function):
"""Return per-cpu variable.
$lx_per_cpu("VAR"[, CPU]): Return the per-cpu variable called VAR for the
$lx_per_cpu(VAR[, CPU]): Return the per-cpu variable called VAR for the
given CPU number. If CPU is omitted, the CPU of the current context is used.
Note that VAR has to be quoted as string."""
@@ -158,7 +158,7 @@ PerCpu()
class PerCpuPtr(gdb.Function):
"""Return per-cpu pointer.
$lx_per_cpu_ptr("VAR"[, CPU]): Return the per-cpu pointer called VAR for the
$lx_per_cpu_ptr(VAR[, CPU]): Return the per-cpu pointer called VAR for the
given CPU number. If CPU is omitted, the CPU of the current context is used.
Note that VAR has to be quoted as string."""