Message ID | 20220420065013.222816-2-npiggin@gmail.com |
---|---|
State | New |
Headers | show
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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Pdbg" <pdbg-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
gdbserver multi-threaded debugging and POWER9/10 support
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expand
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diff --git a/libpdbg/p10chip.c b/libpdbg/p10chip.c index e0d9ee21..70481f1f 100644 --- a/libpdbg/p10chip.c +++ b/libpdbg/p10chip.c @@ -154,14 +154,14 @@ static int p10_thread_stop(struct thread *thread) int i = 0; thread_write(thread, P10_DIRECT_CONTROL, PPC_BIT(7 + 8*thread->id)); - while (!(thread->state(thread).quiesced)) { + do { usleep(1000); if (i++ > RAS_STATUS_TIMEOUT) { PR_ERROR("Unable to quiesce thread\n"); - break; + return 1; } - } - thread->status = thread->state(thread); + thread->status = thread->state(thread); + } while (!thread->status.quiesced); return 0; } diff --git a/libpdbg/p9chip.c b/libpdbg/p9chip.c index 9fddaf64..0ac53542 100644 --- a/libpdbg/p9chip.c +++ b/libpdbg/p9chip.c @@ -157,14 +157,14 @@ static int p9_thread_stop(struct thread *thread) int i = 0; thread_write(thread, P9_DIRECT_CONTROL, PPC_BIT(7 + 8*thread->id)); - while (!(thread->state(thread).quiesced)) { + do { usleep(1000); if (i++ > RAS_STATUS_TIMEOUT) { PR_ERROR("Unable to quiesce thread\n"); - break; + return 1; } - } - thread->status = thread->state(thread); + thread->status = thread->state(thread); + } while (!thread->status.quiesced); return 0; }
Have p9 and p10 thread_stop return 1 on failure, and have them set thread->status to the status used when checking for quiesce, rather than sampling it again on the way out. This seems to improve some intermittent condition on POWER9 where a thread was stopped successfuly but the subsequent status read finds it no longer quiesced. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- libpdbg/p10chip.c | 8 ++++---- libpdbg/p9chip.c | 8 ++++---- 2 files changed, 8 insertions(+), 8 deletions(-)