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| author |   Vineet Gupta <vgupta@kernel.org> | 2020-05-14 16:26:45 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@kernel.org> | 2023-08-17 20:31:59 -0700 |
| commit | d1d1569e89e9cc5c07a389ac859bd045b906923c (patch) | |
| tree | 913967459468fc425a555af4286afa29a2a6a65a /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | ARC: entry: use gp to cache task pointer (vs. r25) (diff) | |
| download | wireguard-linux-d1d1569e89e9cc5c07a389ac859bd045b906923c.tar.xz wireguard-linux-d1d1569e89e9cc5c07a389ac859bd045b906923c.zip | |
ARC: kernel stack: INIT_THREAD need not setup @init_stack in @ksp
There are 2 pointers to kernel mode stack of a task
- task_struct.stack: base address of stack page (max possible stack top)
- thread_info.ksp : runtime stack top in __switch_to
INIT_THREAD was setting up ksp to stack base which was not really needed
- it would get overwritten with dynamic value on first call to
__switch_to when init is switched out for the very first time.
- generic code already does
init_task.stack = init_stack
and ARC code uses that to retrieve task's stack base.
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions