3.8.13.16 -stable review patch. If anyone has any objections, please let me know.
------------------ From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <[email protected]> commit 9fadb352ed73edd7801a280b552d33a6040c8721 upstream. Only the render backends of the first shader engine were enabled. The others were erroneously disabled. Enabling the other render backends improves performance a lot. Unigine Sanctuary on Bonaire: Before: 15 fps After: 90 fps Judging from the fan noise, the GPU was also underclocked when the other render backends were disabled, resulting in horrible performance. The fan is a lot noisy under load now. Signed-off-by: Marek Olšák <[email protected]> Signed-off-by: Alex Deucher <[email protected]> [ kamal: backport to 3.8 (SI only; no CIK in 3.8) ] Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/gpu/drm/radeon/si.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index ff9a680..0746272 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -1456,7 +1456,7 @@ static void si_setup_spi(struct radeon_device *rdev, } static u32 si_get_rb_disabled(struct radeon_device *rdev, - u32 max_rb_num, u32 se_num, + u32 max_rb_num_per_se, u32 sh_per_se) { u32 data, mask; @@ -1470,14 +1470,14 @@ static u32 si_get_rb_disabled(struct radeon_device *rdev, data >>= BACKEND_DISABLE_SHIFT; - mask = si_create_bitmask(max_rb_num / se_num / sh_per_se); + mask = si_create_bitmask(max_rb_num_per_se / sh_per_se); return data & mask; } static void si_setup_rb(struct radeon_device *rdev, u32 se_num, u32 sh_per_se, - u32 max_rb_num) + u32 max_rb_num_per_se) { int i, j; u32 data, mask; @@ -1487,14 +1487,14 @@ static void si_setup_rb(struct radeon_device *rdev, for (i = 0; i < se_num; i++) { for (j = 0; j < sh_per_se; j++) { si_select_se_sh(rdev, i, j); - data = si_get_rb_disabled(rdev, max_rb_num, se_num, sh_per_se); + data = si_get_rb_disabled(rdev, max_rb_num_per_se, sh_per_se); disabled_rbs |= data << ((i * sh_per_se + j) * TAHITI_RB_BITMAP_WIDTH_PER_SH); } } si_select_se_sh(rdev, 0xffffffff, 0xffffffff); mask = 1; - for (i = 0; i < max_rb_num; i++) { + for (i = 0; i < max_rb_num_per_se * se_num; i++) { if (!(disabled_rbs & mask)) enabled_rbs |= mask; mask <<= 1; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
