From 8d989f4448947c866b47cb6789b88b31d5f79fe3 Mon Sep 17 00:00:00 2001 From: Deepak R Varma Date: Wed, 4 Nov 2020 20:33:39 +0530 Subject: [PATCH] drm/i915/perf: replace idr_init() by idr_init_base() idr_init() uses base 0 which is an invalid identifier. The new function idr_init_base allows IDR to set the ID lookup from base 1. This avoids all lookups that otherwise starts from 0 since 0 is always unused. References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient") Signed-off-by: Deepak R Varma Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20201104150339.GA68663@localhost --- drivers/gpu/drm/i915/i915_perf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index e94976976571f..2d033255b7cf7 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -4367,7 +4367,7 @@ void i915_perf_init(struct drm_i915_private *i915) RUNTIME_INFO(i915)->cs_timestamp_frequency_hz / 2; mutex_init(&perf->metrics_lock); - idr_init(&perf->metrics_idr); + idr_init_base(&perf->metrics_idr, 1); /* We set up some ratelimit state to potentially throttle any * _NOTES about spurious, invalid OA reports which we don't -- 2.39.5