[PATCH v3 16/51] cpuidle: Annotate poll_idle()
From: Peter Zijlstra <peterz@infradead.org>
Date: 2023-01-12 20:01:18
Also in:
linux-acpi, linux-alpha, linux-arch, linux-arm-msm, linux-clk, linux-m68k, linux-mips, linux-mm, linux-omap, linux-perf-users, linux-pm, linux-riscv, linux-s390, linux-samsung-soc, linux-sh, linux-tegra, linux-um, linuxppc-dev, lkml, loongarch, sparclinux, virtualization
The __cpuidle functions will become a noinstr class, as such they need explicit annotations. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Rafael J. Wysocki <redacted> Acked-by: Frederic Weisbecker <frederic@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <redacted> --- drivers/cpuidle/poll_state.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/cpuidle/poll_state.c
+++ b/drivers/cpuidle/poll_state.c@@ -13,7 +13,10 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - u64 time_start = local_clock(); + u64 time_start; + + instrumentation_begin(); + time_start = local_clock(); dev->poll_time_limit = false;
@@ -39,6 +42,7 @@ static int __cpuidle poll_idle(struct cp raw_local_irq_disable(); current_clr_polling(); + instrumentation_end(); return index; }